TRANSMISSION (DIAGNOSTICS) > Check List for Interview
CHECK
Check the following items when a problem has occurred.
Use copies of this page for interviewing customers.
Customer’s name
Date of purchase
Date of repair
Transmission model
Transmission
Chassis number
Odometer reading
km (miles)
Frequency
Continuous Intermittent ( times/day)
Weather
Fine Cloudy Rainy Snowy
Others
( )
Place
Highland Suburbs Inner city Uphill Downhill Rough road
Others
( )
Ambient air temperature
Hot Warm Cool Cold
Vehicle speed
km/h (MPH)
AT OIL TEMP light
Blinks continuously
Does not blink
Select lever position
P R N D Manual mode L
Driving condition
Not affected
At racing
While decelerating
At starting
While accelerating
While turning ( RH / LH)
While idling
When cruising
(Vehicle speed km/h)
Immediately after starting the engine
Manual mode
ON OFF
Symptoms
Vehicle does not move ( Any position Particular position)
Vehicle does not move (no load racing condition as in N range)
Vehicle does not move (engine speed does not increase, felt as stall condition)
Noise or vibration
(Specifically: )
Shock felt at N → D selection ( seconds after shifting, when engine cold or after warm-up)
Shock felt at N → R selection ( seconds after shifting, when engine cold or after warm-up)
Shifting is wrong
(Specifically: )
Shock or judder during driving
Fails to accelerate
Engine speed increases abruptly during driving
Shock or judder during standing start
Select lever does not move
Others
( )
TRANSMISSION (DIAGNOSTICS) > General Description
CAUTION
1. AIRBAG SYSTEM
Do not use the electrical test equipment on the airbag system wiring harnesses and connector circuits.
Be careful not to damage the airbag system wiring harness.
2. CONTROL MODULE
1.
The TCM connector is waterproof. When measuring
the TCM connector terminal voltage, or the resistance between the
terminals, use the check board.
2.
When measuring the voltage or resistance of individual sensors, use a tapered pin with a diameter of 0.6 mm (0.024in)
or less and touch it to the tip of terminal. Never insert the tapered
pin into the terminal because it deforms inside which may lead to
malfunction.
If a taper pin or the like has been inserted into the connector terminal, replace the connector.
When approx. 3 seconds pass since ignition switch was turned to OFF
Battery voltage
—
23 ←→ 26 or 42
Start command circuit
Except during restarting (from Auto Start Stop release to engine ON)
Battery voltage
—
During restarting (from Auto Start Stop release to engine ON)
0 V
—
24 ←→ 26 or 42
Main power supply
Ignition switch ON
Battery voltage
—
26 ←→ Chassis ground
GND
Always
0 V
—
29 ←→ 26 or 42
Stop light switch
Stop light switch ON
Battery voltage
—
Stop light switch OFF
0 V
30 ←→ 26 or 42
Primary DOWN solenoid
Engine ON, while DOWN shifting
Refer to the waveform (solenoid (4))
Resistance: Approx. 10 — 14.2 Ω
Resistance value at 20°C (68°F). Value is higher as the temperature increase.
32 ←→ 26 or 42
Secondary solenoid
Engine ON
Refer to the waveform (solenoid (2))
Resistance: Approx. 4.8 — 8.4 Ω
Resistance value at 20°C (68°F). Value is higher as the temperature increase.
33 ←→ 2
Secondary pressure sensor power supply output
Ignition switch ON
5 V
—
34 ←→ 26 or 42
Backup power supply
Always
Battery voltage
—
35 ←→ 26 or 42
D range switch
Ignition switch ON, D range
0 V
—
Ignition switch ON, other than D range
Battery voltage
36 ←→ 26 or 42
N range switch
Ignition switch ON, N range
0 V
—
Ignition switch ON, other than N range
Battery voltage
37 ←→ 26 or 42
R range switch
Ignition switch ON, R range
0 V
—
Ignition switch ON, other than R range
Battery voltage
38 ←→ 26 or 42
P range switch
Ignition switch ON, P range
0 V
—
Ignition switch ON, other than P range
Battery voltage
40 ←→ 26 or 42
Main power supply
Ignition switch ON
Battery voltage
—
41 ←→ 26 or 42
Ignition switch
Ignition switch ON
Battery voltage
—
42 ←→ Chassis ground
GND
Always
0 V
—
43
CAN communication line (+)
—
—
—
44
CAN communication line (−)
—
—
—
45 ←→ 26 or 42
Starter SW
At cranking
Battery voltage
—
Except at cranking
0 V
—
47 ←→ 26 or 42
Primary UP solenoid
Engine ON, while UP shifting
Refer to the waveform (solenoid (3))
Resistance: Approx. 10 — 14.2 Ω
Resistance value at 20°C (68°F). Value is higher as the temperature increase.
48 ←→ 26 or 42
AWD solenoid
Engine ON, “P” or “N” range
Refer to the waveform (solenoid (6))
Resistance: Approx. 1.5 — 4.9 Ω
Resistance value at 20°C (68°F). Value is higher as the temperature increase.
Engine ON, “D” range, brake ON
Refer to the waveform (solenoid (7))
∗1: With paddle shift switch
TRANSMISSION (DIAGNOSTICS) > Transmission Control Module (TCM) I/O Signal
WAVEFORM
1. SENSOR
2. SOLENOID
TRANSMISSION (DIAGNOSTICS) > Inspection Mode
PROCEDURE
It is possible to diagnose the DTC by performing
the indicated inspection mode. After correcting the DTC, perform a
necessary inspection mode and make sure that the function is resumed
correctly and the DTC is recorded.
1. PREPARATION FOR THE INSPECTION MODE
1.
Check that the battery voltage is 12 V or more and fuel remains approx. half [20 — 40 L (5.3 — 10.6 US gal, 4.4 — 8.8 Imp gal)].
2.
After performing the diagnostics and clearing memory, check that no DTC remains.
Perform the inspection mode after warming up the engine except when the ATF temperature at engine start is specified.
2. INSPECTION MODE A
DTC
Item
Condition
P0604
INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR
—
P0605
INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR
—
P0613
TCM PROCESSOR
—
P062F
INTERNAL CONTROL MODULE EEPROM ERROR
Perform inspection mode A twice
P0705
TRANSMISSION RANGE SENSOR "A" CIRCUIT (PRNDL INPUT)
—
P0712
TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW
—
P0842
TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT LOW
—
P0843
TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT HIGH
—
P0890
TCM POWER RELAY SENSE CIRCUIT LOW
—
P0962
PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT LOW
—
P0963
PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT HIGH
—
P0966
PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT LOW
—
P0967
PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT HIGH
—
P2530
IGNITION SWITCH RUN POSITION CIRCUIT
—
P2763
TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT HIGH
After inspection mode A is done, perform inspection mode C
Shift the select lever to “D” range and set the vehicle to the Auto Start Stop status by Auto Start Stop function.
At this time, check that the engine is stopped, securely make sure that the electric oil pump is rotating with operating sound.
8.
After stopping the engine, leave it for five seconds or more, read [secondary pressure sensor voltage.] using the Subaru Select Monitor during Auto Start Stop and record it when the hydraulic pressure stabilizes. TRANSMISSION (DIAGNOSTICS)>Data Monitor
This voltage is “B”.
9.
Calculate the voltage difference between the A/D
value measured when the electric pump is in operation and the one
measured when in halt condition.
AT OIL TEMP light repeats “Blinking at 4 Hz →
Turning OFF” when the AT learning is not completed with the ignition
switch ON. In this case, perform the “Learning”. TRANSMISSION (DIAGNOSTICS)>Learning Control
(A)
Ignition switch condition
(1)
At normal condition
(3)
When malfunction is detected
(4)
When AT learning is not finished
(2)
When ATF temperature is high
If the AT OIL TEMP light does not illuminate, or illumination patterns are not as above, check the AT OIL TEMP light circuit.
2. DIAGNOSIS
Detecting condition:
CAN communication is lost with the combination meter.
Combination meter malfunction
TCM is in special control mode.
AT learning is not finished.
Trouble symptom:
When the ignition switch is turned to ON, the AT OIL TEMP light does not illuminate.
Engine speed signal transmitted from the ECM. Calculated from crankshaft position sensor signal. TCM input value.
rpm
Turbine Revolution Speed
Turbine rotation speed calculated by the TCM using signals from the turbine speed sensor.
rpm
Accel. Opening Angle
Accelerator pedal opening angle transmitted from
the ECM. Value calculated from the accelerator pedal position sensor
output. TCM input value.
%
Front Wheel Speed
Front wheel speed calculated from the secondary axis rotation speed.
km/h or MPH
ATF Temp.
Value calculated from the ATF temperature sensor output value. ATF temperature of the control valve section.
°C or °F
Lock Up Duty Ratio
Lock-up duty solenoid control duty ratio. TCM output value.
%
Transfer Duty Ratio
Transfer duty solenoid control duty ratio. TCM output value.
%
Actual Gear Ratio
Current gear ratio (rotation ratio of the
pulley) calculated from the primary pulley axis rotation speed and the
secondary pulley axis rotation speed.
—
Primary Rev Speed
Primary pulley rotation speed calculated by the TCM using signals from the primary speed sensor.
rpm
Secondary Rev Speed
Secondary pulley rotation speed calculated by the TCM using signals from the secondary speed sensor.
rpm
Stop Light Switch
Stop light SW signal. Set to ON when the brake pedal is depressed. TCM input value.
ON or OFF
Secondary Set Current
Value of the indicator current for controlling the secondary solenoid calculated by the TCM.
mA
Secondary Actual Current
Actual current value of the secondary solenoid. TCM output value.
mA
Commanded Forward & Reverse Linear Solenoid Current
Value of the indicator current for controlling the F&R linear solenoid calculated by the TCM.
mA
Actual Forward & Reverse Linear Solenoid Current
Actual current value of the F&R linear solenoid. TCM output value.
mA
Control module voltage
Battery voltage. TCM input value.
V
Primary UP Duty
Primary UP solenoid control duty ratio. TCM output value.
%
Primary DOWN Duty
Primary DOWN solenoid control duty ratio. TCM output value.
%
P Range
Inhibitor SW signal. Set to ON when the select lever is in P range. TCM input value.
ON or OFF
R Range Signal
Inhibitor SW signal. Set to ON when the select lever is in R range. TCM input value.
ON or OFF
N Range
Inhibitor SW signal. Set to ON when the select lever is in N range. TCM input value.
ON or OFF
D Range Signal
Inhibitor SW signal. Set to ON when the select lever is in D range. TCM input value.
ON or OFF
L-range
L range signal. Set to ON when the select lever is in the L range gate. TCM input value.
ON or OFF
X mode
ON/OFF status of the X mode received from the engine. TCM input value. (Model with X mode)
ON or OFF
Shift Step in Manual Mode
Gear shift position in manual mode or in multi-stage shifting mode. TCM output value.
—
Tiptronic Mode Switch
Manual mode SW signal. Set to ON when the select lever is in the manual shift gate. TCM input value.
ON or OFF
Up Switch
Status of the paddle shift up SW. Set to ON when
the plus (+) side of the steering wheel paddle shift is pulled. TCM
input value.
ON or OFF
Down Switch
Status of the paddle shift down SW. Set to ON
when the minus (−) side of the steering wheel paddle shift is pulled.
TCM input value.
ON or OFF
Electric Fluid Pump System status
Electric oil pump condition. TCM input value.
Normal or Abnormal
Electric fluid pump indication duty
Set duty ratio to electric oil pump. TCM input value.
%
Emphasized idle stop request
Auto Start Stop prohibited condition by the TCM.
Prohibited when the Auto Start Stop is not possible under a specific
condition. TCM output value.
Not Permit or Permit
Electric Fluid Pump Relay
Electric oil pump relay ON/ OFF condition. Set
to ON when the electric oil pump is activated during Auto Start Stop
operation. TCM input value.
ON or OFF
secondary pressure sensor voltage.
Voltage value after an analog/digital conversion
is done inside the TCM using the signal input from the secondary
pressure sensor. TCM input value.
V
ATF Temp sensor voltage.
Sensor voltage value input from the ATF temperature sensor to the TCM. TCM input value.
V
Diagnosis Lamp
Transmission failure detection status. Set to ON
when a failure is detected. AT oil temperature warning light blinks at 2
Hz. TCM output value.
ON or OFF
ATF Temperature Lamp
ATF high temperature detection status. Set to ON
when high temperature is detected. ATF temperature warning light
illuminates. TCM output value.
ON or OFF
AT learning
AT initial learning completion status. AT oil
temperature warning light blinks at 4 Hz when the learning is not
completed. TCM output value.
Completed or not completed
Trip Count
Number of times the ignition is turned ON since the vehicle was manufactured.
time
Count
Shows whether the elapsed time counter after
turning ON the ignition switch is synchronized with the integrated unit
(master unit) or an original counter. “Common” means the integrated
unit, and “Originally” means that the original counter is used.
—
Time Count
Shows the elapsed time after turning ON the ignition.
ms
Actual Secondary Pressure
Pressure value applied to the secondary pulley cylinder (line pressure) detected by the secondary pressure sensor.
MPa
System Voltage
Power supply voltage supplied to the backup power supply (≈ battery voltage).
Engine speed signal transmitted from the ECM. Calculated from crankshaft position sensor signal. TCM input value.
rpm
Turbine Revolution Speed
Turbine rotation speed calculated by the TCM using signals from the turbine speed sensor.
rpm
Accel. Opening Angle
Accelerator pedal opening angle transmitted from
the ECM. Value calculated from the accelerator pedal position sensor
output. TCM input value.
%
Front Wheel Speed
Front wheel speed calculated from the secondary axis rotation speed.
km/h or MPH
ATF Temp.
Value calculated from the ATF temperature sensor output value. ATF temperature of the control valve section.
°C or °F
Lock Up Duty Ratio
Lock-up duty solenoid control duty ratio. TCM output value.
%
Transfer Duty Ratio
Transfer duty solenoid control duty ratio. TCM output value.
%
Actual Gear Ratio
Current gear ratio (rotation ratio of the
pulley) calculated from the primary pulley axis rotation speed and the
secondary pulley axis rotation speed.
—
Primary Rev Speed
Primary pulley rotation speed calculated by the TCM using signals from the primary speed sensor.
rpm
Secondary Rev Speed
Secondary pulley rotation speed calculated by the TCM using signals from the secondary speed sensor.
rpm
Stop Light Switch
Stop light SW signal. Set to ON when the brake pedal is depressed. TCM input value.
ON or OFF
Secondary Set Current
Value of the indicator current for controlling the secondary solenoid calculated by the TCM.
mA
Secondary Actual Current
Actual current value of the secondary solenoid. TCM output value.
mA
Commanded Forward & Reverse Linear Solenoid Current
Value of the indicator current for controlling the F&R linear solenoid calculated by the TCM.
mA
Actual Forward & Reverse Linear Solenoid Current
Actual current value of the F&R linear solenoid. TCM output value.
mA
Control module voltage
Battery voltage. TCM input value.
V
Primary UP Duty
Primary UP solenoid control duty ratio. TCM output value.
%
Primary DOWN Duty
Primary DOWN solenoid control duty ratio. TCM output value.
%
P Range
Inhibitor SW signal. Set to ON when the select lever is in P range. TCM input value.
ON or OFF
R Range Signal
Inhibitor SW signal. Set to ON when the select lever is in R range. TCM input value.
ON or OFF
N Range
Inhibitor SW signal. Set to ON when the select lever is in N range. TCM input value.
ON or OFF
D Range Signal
Inhibitor SW signal. Set to ON when the select lever is in D range. TCM input value.
ON or OFF
L-range
L range signal. Set to ON when the select lever is in the L range gate. TCM input value.
ON or OFF
X mode
ON/OFF status of the X mode received from the engine. TCM input value. (Model with X mode)
ON or OFF
Shift Step in Manual Mode
Gear shift position in manual mode or in multi-stage shifting mode. TCM output value.
—
Tiptronic Mode Switch
Manual mode SW signal. Set to ON when the select lever is in the manual shift gate. TCM input value.
ON or OFF
Up Switch
Status of the paddle shift up SW. Set to ON when
the plus (+) side of the steering wheel paddle shift is pulled. TCM
input value.
ON or OFF
Down Switch
Status of the paddle shift down SW. Set to ON
when the minus (−) side of the steering wheel paddle shift is pulled.
TCM input value.
ON or OFF
Electric Fluid Pump System status
Electric oil pump condition. TCM input value.
Normal or Abnormal
Electric fluid pump indication duty
Set duty ratio to electric oil pump. TCM input value.
%
Emphasized idle stop request
Auto Start Stop prohibited condition by the TCM.
Prohibited when the Auto Start Stop is not possible under a specific
condition. TCM output value.
Not Permit or Permit
Electric Fluid Pump Relay
Electric oil pump relay ON/ OFF condition. Set
to ON when the electric oil pump is activated during Auto Start Stop
operation. TCM input value.
ON or OFF
secondary pressure sensor voltage.
Voltage value after an analog/digital conversion
is done inside the TCM using the signal input from the secondary
pressure sensor.
V
ATF Temp sensor voltage.
Sensor voltage value input from the ATF temperature sensor to the TCM. TCM input value.
V
Diagnosis Lamp
Transmission failure detection status. Set to ON
when a failure is detected. AT oil temperature warning light blinks at 2
Hz. TCM output value.
ON or OFF
ATF Temperature Lamp
ATF high temperature detection status. Set to ON
when high temperature is detected. ATF temperature warning light
illuminates. TCM output value.
ON or OFF
Trip Count
Number of times the ignition is turned ON since the vehicle was manufactured.
time
Count
Shows whether the elapsed time counter after
turning ON the ignition switch is synchronized with the integrated unit
(master unit) or an original counter. “Common” means the integrated
unit, and “Originally” means that the original counter is used.
—
Time Count
Shows the elapsed time after turning ON the ignition.
ms
Actual Secondary Pressure
Pressure value applied to the secondary pulley cylinder (line pressure) detected by the secondary pressure sensor.
MPa
System Voltage
Power supply voltage supplied to the backup power supply (≈ battery voltage).
V
TRANSMISSION (DIAGNOSTICS) > Active Test
OPERATION
Be sure to perform the active test while the engine is not running.
On [Vehicle selection] screen, enter vehicle information and select [OK].
3.
On [Main Menu] screen, select [Each System].
4.
On [Select System] screen, select [Transmission].
5.
On [Select Function] screen, select [Active Test].
TRANSMISSION (DIAGNOSTICS) > Active Test
LIST
Item
Contents
Unit used in operation
Execution condition
F&R Clutch Solenoid
Forcibly operate the F&R clutch solenoid
that controls engagement/disengagement states of the forward/reverse
clutches. Check if it operates normally by listening to the operating
sound.
100 mA
When all of the following conditions are met:
P range
Ignition switch is ON (engine stops)
Battery voltage 10.9 V or more
Auto Start Stop is not operating.
Secondary Solenoid
Forcibly operate the secondary solenoid that
controls the pressure (line pressure) applied to the secondary pulley
cylinder. Check if it operates normally by listening to the clicking
sound.
100 mA
Primary Down Solenoid
Forcibly operate the primary DOWN solenoid that
controls the pressure applied to the primary pulley cylinder to the
decrease side. Check if it operates normally by listening to the
clicking sound.
10%
Primary Up Solenoid
Forcibly operate the primary UP solenoid that
controls the pressure applied to the primary pulley cylinder to the
increase side. Check if it operates normally by listening to the
clicking sound.
10%
AWD Solenoid
Forcibly operate the AWD solenoid that controls
engagement/disengagement states of the transfer clutch. Check if it
operates normally by listening to the operating sound.
10%
Lock-Up Duty Solenoid
Forcibly operate the lockup duty solenoid that
controls engagement/disengagement states of the lockup clutch. Check if
it operates normally by listening to the clicking sound.
10%
TRANSMISSION (DIAGNOSTICS) > Learning Control
GENERAL DESCRIPTION
Follow the messages displayed on the Subaru Select Monitor when working.
When the following work is performed, perform learning work for the transmission.
Replacement of TCM/Replacement or disassembly of
transmission assembly/Replacement of control valve body/Clearing AT
leaning value is executed.
TRANSMISSION (DIAGNOSTICS) > All Readiness Diagnostic Code(s)
OPERATION
The readiness code shows self-diagnosis status
of each DTC. The DTCs displayed here are either not yet self-diagnosed
or self-diagnosed but not completed. After the self-diagnosis is
complete, DTC will no longer be displayed regardless of the diagnostic
result.
Self-diagnosis is executed every time when the
ignition switch is turned to ON. Therefore, even after the
self-diagnosis is complete and nothing is displayed on the readiness
code display, if you turn the ignition switch to ON again after turning
it OFF, some DTCs may be displayed on the readiness code display.
After you repair a DTC and perform the
inspection mode, use the readiness code to check if the self-diagnosis
of the DTC is completed. If the concerned DTC is displayed, the
self-diagnosis of the DTC is not complete. Perform the inspection mode
again.
For detailed operation procedures, refer to “Help” of application.
1.
On [Start] screen, select [Diagnosis].
2.
On [Vehicle selection] screen, enter vehicle information and select [OK].
3.
On [Main Menu] screen, select [Each System].
4.
On [Select System] screen, select [Transmission], and then select [Next].
5.
On [Select Function] screen, select [DTC].
6.
On [DTC] screen, select [All Readiness Diagnostic Code(s)].
Move the select lever to each range, read the data of [P Range], [R Range Signal], [N Range] and [D Range Signal] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor
Is display “OFF” for the range other than corresponding range?
Move the select lever to each range, read the data of [P Range], [R Range Signal], [N Range] and [D Range Signal] using the Subaru Select Monitor. TRANSMISSION (DIAGNOSTICS)>Data Monitor
Judge the malfunction of oil temperature sensor characteristics (stuck to low temperature side).
Judge as NG if the amount of oil temperature change since ignition ON is equal to or below the predetermined value.
Diagnosis 2
Judge the malfunction of oil temperature sensor characteristics (stuck to high temperature side).
Judge as malfunction when the difference between
engine coolant temperature and CVT oil temperature is equal to or more
than specified value at starting.
2. EXECUTION CONDITION
Secondary parameters
Execution condition
Diagnosis 1
12 V battery system voltage (The timer is held when the following conditions are not satisfied)
Transmission range
Vehicle speed (calculated from measured secondary pulley shaft speed sensor)
10 V or more
Drive
21.7 MPH or more
Diagnosis 2
12 V battery system voltage
Soak time (received from ECM)
(Engine speed
for time)
10 V or more
21600 s or more
400 rpm or more
300 s or more
3. DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Diagnosis 1
Absolute change of measured Transmission fluid temperature sensor input voltage
Transmission fluid temperature
Less than 0.049 V
Less than 20 degC
Diagnosis 2
Transmission fluid temperature at engine start − Engine coolant temperature at engine start
Exceeds 18 degC
Time needed for diagnosis:
Diagnosis 1: 600 s
Diagnosis 2: Immediately
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0712 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW
Detect the no input signal from the turbine speed sensor.
Judge as NG if there is no input signal from the
turbine speed sensor, while the primary speed sensor on the same shaft
has the input signal with the forward/reverse clutch engaged.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
10 V or more
Engine speed
400 rpm or more
Transmission range
Drive
or
Reverse
Measured primary pulley shaft speed
500 rpm or more
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Measured turbine shaft speed
0 rpm
Time needed for diagnosis: 0.6 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0719 BRAKE SWITCH "B" CIRCUIT LOW
1. —
DTC detecting condition:
Immediately at fault recognition
Trouble symptom:
Gear is not shifted down when climbing a hill or driving down a hill.
Replace the fuse (No. 37). If the new fuse (No. 37) has blown out easily, repair the short circuit of harness between the fuse (No. 37) and stop light switch.
2. CHECK HARNESS.
1.
Turn the ignition switch to OFF.
2.
Disconnect the TCM connector.
3.
Disconnect the stop light switch connector.
4.
Measure the resistance between TCM connector and stop light switch connector.
Current condition is normal. It is possible that temporary poor contact occurs.
General description
OUTLINE OF DIAGNOSIS
Detect the abnormality in transmission gear ratio control function.
Judge as NG if a discrepancy between the
transmission target gear ratio (as internal data) and the actual gear
ratio becomes the specified value or more. (Compare the value of “Gear
Ratio Target × Secondary pulley speed ≈ Target primary speed equivalent
value” with the value of primary pulley speed sensor.)
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
10 V or more
Engine speed
400 rpm or more
Transmission range
Drive
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Apply the values of [Actual Secondary Pressure] and [Secondary Actual Current]
recorded in the freeze frame data onto the graph shown in the following
figure, and judge if either low-voltage malfunction or high-voltage
malfunction occurs.
(A) Actual secondary pressure (MPa)
(B) Secondary actual current (mA)
(C) Low-voltage malfunction
(D) High-voltage malfunction
Symptom that the DTC P0867 illuminates can be classified into 2 patterns.
Low-voltage malfunction: detected due to insufficient oil pressure
High-voltage malfunction: detected due to excessive oil pressure
Detect the malfunction of transmission secondary solenoid and hydraulic circuit (stuck to high pressure side).
Judge as NG, when the secondary pressure sensor
value at P0867 detection is the predetermined value or more, and the
secondary pressure sensor voltage value after the predetermined period
of time has elapsed since IG OFF is within the predetermined range.
EXECUTION CONDITION
Secondary parameters
Execution condition
Phase 1
12 V battery system voltage
Engine speed
10 V or more
At or more than rpm values in Table 1
Phase 2
Fail detected (P0867)
12 V battery system voltage
Ignition state
Measured turbine shaft speed
Transmission fluid temperature
TRUE
10 V or more
OFF
400 rpm or less
−20 degC or more
Table 1
Target line pressure (kPa)
0
500
1000
1500
2000
3000
4000
5000
6000
Engine speed (rpm)
1049
1189
1328
1467
1610
1916
2535
8000
8000
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Phase 1
ABS∗ (Target line pressure − Measured line pressure)
Measured line pressure
More than 500 kPa
3000 kPa or more
Phase 2
Measured line pressure sensor input voltage
(Line pressure)
Measured line pressure sensor input voltage
(Line pressure)
Both Phase 1 and Phase 2 must be met to fail the diagnostics.
0.8 V or less
(570 kPa or less)
0.195 V or more
(0 kPa or more)
∗ ABS: Absolute value
Time needed for diagnosis:
Phase 1: 5 s
Phase 2: 3 s
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0747 PRESSURE CONTROL SOLENOID "A" STUCK ON
1. —
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
Apply the values of [Actual Secondary Pressure] and [Secondary Actual Current]
recorded in the freeze frame data onto the graph shown in the following
figure, and judge if either low-voltage malfunction or high-voltage
malfunction occurs.
(A) Actual secondary pressure (MPa)
(B) Secondary actual current (mA)
(C) Low-voltage malfunction
(D) High-voltage malfunction
Symptom that the DTC P0867 illuminates can be classified into 2 patterns.
Low-voltage malfunction: detected due to insufficient oil pressure
High-voltage malfunction: detected due to excessive oil pressure
Detect the malfunction of transmission secondary solenoid and hydraulic circuit (stuck to low pressure side).
Judge as NG, when the secondary pressure sensor
value at P0867 detection is less than the predetermined value, and the
secondary pressure sensor voltage value after the predetermined period
of time has elapsed since IG OFF is within the predetermined range.
EXECUTION CONDITION
Secondary parameters
Execution condition
Phase 1
12 V battery system voltage
Engine speed
10 V or more
At or more than rpm values in Table 1
Phase 2
Fail detected (P0867)
12 V battery system voltage
Ignition state
Measured turbine shaft speed
Transmission fluid temperature
TRUE
10 V or more
OFF
400 rpm or less
−20 degC or more
Table 1
Target line pressure (kPa)
0
500
1000
1500
2000
3000
4000
5000
6000
Engine speed (rpm)
1049
1189
1328
1467
1610
1916
2535
8000
8000
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Phase 1
ABS∗ (Target line pressure − Measured line pressure)
Measured line pressure
More than 500 kPa
Less than 3000 kPa
Phase 2
Measured line pressure sensor input voltage
(Line pressure)
Measured line pressure sensor input voltage
(Line pressure)
Both Phase 1 and Phase 2 must be met to fail the diagnostics.
0.8 V or less
(570 kPa or less)
0.195 V or more
(0 kPa or more)
∗ ABS: Absolute value
Time needed for diagnosis:
Phase 1: 5 s
Phase 2: 3 s
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0751 SHIFT SOLENOID "A" PERFORMANCE/STUCK OFF
1. —
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
Current condition is normal. It is possible that temporary poor contact occurs.
General description
OUTLINE OF DIAGNOSIS
Detect the malfunction of shift-up fluid
pressure control solenoid and hydraulic circuit characteristics (stuck
to low pressure side).
Judge as NG if the amount of gear rate change
per second is equal to or larger than the predetermined value, even
though the up-shift command is issued.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
10 V or more
Engine speed
1000 rpm or more
Commanded duty of shift down pressure control solenoid
Current condition is normal. It is possible that temporary poor contact occurs.
General description
OUTLINE OF DIAGNOSIS
Detect the malfunction of shift-down fluid
pressure control solenoid and hydraulic circuit characteristics (stuck
to high pressure side).
Judge as NG if the amount of gear rate change
per second is equal to or larger than the predetermined value, even
though the up-shift command is issued.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
10 V or more
Engine speed
1000 rpm or more
Commanded duty of shift down pressure control solenoid
Current condition is normal. It is possible that temporary poor contact occurs.
General description
OUTLINE OF DIAGNOSIS
Diagnosis 1
Detect the malfunction of transmission
forward/reverse clutch pressure solenoid and hydraulic circuit
characteristics (stuck to low pressure side).
Judge as NG if the value calculated by “turbine
speed − primary pulley speed” becomes the predetermined value or more,
even though the forward/reverse clutch is engaged.
Diagnosis 2
Judge as NG when the turbine speed becomes the predetermined value or larger at starting.
EXECUTION CONDITION
Secondary parameters
Execution condition
Diagnosis 1
12 V battery system voltage
Transmission range
Measured turbine shaft speed
Measured primary pulley shaft speed
Commanded forward & reverse clutch pressure control solenoid current
Engine speed
10 V or more
Drive
100 rpm or more
100 rpm or more
Less than 0.9 A
400 rpm or more
Diagnosis 2
12 V battery system voltage
Transmission range
Measured primary pulley shaft speed
Accelerator pedal position (from ECM)
Commanded forward & reverse clutch pressure control solenoid current
Engine speed
10 V or more
Drive
Less than 100 rpm
Exceeds 6%
Less than 0.9 A
400 rpm or more
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Detect the malfunction of shift lock solenoid or circuit.
Judge as NG if abnormal signal from the
integrated unit is received, when bus off is not detected and there is
no trouble in CAN between the integrated unit.
2. EXECUTION CONDITION
Secondary parameters
Execution condition
None
3. DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Shift lock solenoid system circuit abnormal (received from BIU)
ON
Time needed for diagnosis: 1 s
Malfunction indicator light illumination: Does not illuminate.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0841 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE
1. —
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
Read the data of [secondary pressure sensor voltage.] using Subaru Select Monitor. (While shaking the secondary pressure sensor harness) TRANSMISSION (DIAGNOSTICS)>Data Monitor
Is the value of [secondary pressure sensor voltage.]0.39 — 0.61 V?
Apply the values of [Actual Secondary Pressure] and [Secondary Actual Current]
recorded in the freeze frame data onto the graph shown in the following
figure, and judge if either low-voltage malfunction or high-voltage
malfunction occurs.
(A) Actual secondary pressure (MPa)
(B) Secondary actual current (mA)
(C) Low-voltage malfunction
(D) High-voltage malfunction
Symptom that the DTC P0867 illuminates can be classified into 2 patterns.
Low-voltage malfunction: detected due to insufficient oil pressure
High-voltage malfunction: detected due to excessive oil pressure
Detect the malfunction of transmission secondary pressure sensor function.
Judge as NG if the voltage of the secondary
pressure sensor after the predetermined period of time has elapsed since
IG OFF exceeded the predetermined value.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
10 V or more
Ignition state
OFF
Measured turbine shaft speed
400 rpm or less
Transmission fluid temperature
−20 degC or more
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Measured line pressure sensor input voltage
(Line pressure)
More than 0.8 V
(Exceeds 570 kPa)
Time needed for diagnosis: 3 s
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0842 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT LOW
Perform the diagnosis according to DTCs other than P0867 and P0841. TRANSMISSION (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST
After the diagnosis, start the engine, and drive for 20 minutes in any
driving pattern. (Include driving at a constant legal speed (for 20
seconds) at least once.) After driving, repeat the step 1.
Read the data of [secondary pressure sensor voltage.] using Subaru Select Monitor. (While shaking the secondary pressure sensor harness) TRANSMISSION (DIAGNOSTICS)>Data Monitor
Is the value of [secondary pressure sensor voltage.]0.39 — 0.61 V?
Apply the values of [Actual Secondary Pressure] and [Secondary Actual Current]
recorded in the freeze frame data onto the graph shown in the following
figure, and judge if either low-voltage malfunction or high-voltage
malfunction occurs.
(A) Actual secondary pressure (MPa)
(B) Secondary actual current (mA)
(C) Low-voltage malfunction
(D) High-voltage malfunction
Symptom that the DTC P0867 illuminates can be classified into 2 patterns.
Low-voltage malfunction: detected due to insufficient oil pressure
High-voltage malfunction: detected due to excessive oil pressure
Detect the malfunction of transmission line pressure control function.
Judge as NG if a discrepancy between the target
secondary oil pressure (as internal data) and the detected value of the
secondary pressure sensor becomes the specified value or more.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
10 V or more
Engine speed
At or more than rpm values in Table 1
Table 1
Target line pressure (kPa)
0
500
1000
1500
2000
3000
4000
5000
6000
Engine speed (rpm)
1049
1189
1328
1467
1610
1916
2535
8000
8000
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
ABS∗ (Target line pressure − Measured line pressure)
More than 500 kPa
∗ABS ∗ Absolute value
Time needed for diagnosis: 5 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Detect the malfunction of the transmission secondary solenoid drive circuit.
Judge as NG when the deviation between target
current and actual current of the transmission secondary solenoid
becomes equal to or larger than the predetermined value.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
9 V or more
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Diagnosis 1
ABS∗ (Target line pressure control solenoid valve current − Measured line pressure control solenoid valve current)
Exceeds 0.2 A
Diagnosis 2
Measured line pressure control solenoid valve current
Exceeds 1.05 A
and
1.6 A or less
∗ ABS: Absolute value
Time needed for diagnosis: 1.2 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0962 PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT LOW
1. —
DTC detecting condition:
Immediately at fault recognition
Trouble symptom:
Engine speed increases abruptly, and cannot start.
Is 300 → 500 → 700 mA indicated at the active test, and does [Actual Forward & Reverse Linear Solenoid Current] follow [Commanded Forward & Reverse Linear Solenoid Current]?
Detect the malfunction of transmission forward/reverse clutch pressure solenoid drive circuit characteristics.
Judge as NG when the deviation between set
current and actual current of the transmission forward/reverse clutch
pressure solenoid drive circuit becomes equal to or larger than the
predetermined value.
Diagnosis 2
Detect the malfunction of transmission forward/reverse clutch pressure solenoid drive circuit characteristics.
Judge as NG when the transmission forward/reverse clutch pressure solenoid drive current is within the predetermined value.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
9 V or more
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Diagnosis 1
ABS∗ (Target forward & reverse clutch
pressure control solenoid current − Measured forward & reverse
clutch pressure control solenoid current)
Exceeds 0.2 A
Diagnosis 2
Measured forward & reverse clutch pressure control solenoid current
Exceeds 1.08 A
and
1.6 A or less
∗ ABS: Absolute value
Time needed for diagnosis: 1.2 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0966 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT LOW
After driving with warm up condition, park the vehicle while depressing the brake pedal at “D” range.
2.
Using Subaru Select Monitor, read the data of [Commanded Forward & Reverse Linear Solenoid Current] and [Actual Forward & Reverse Linear Solenoid Current]. TRANSMISSION (DIAGNOSTICS)>Data Monitor
Do [Commanded Forward & Reverse Linear Solenoid Current] and [Actual Forward & Reverse Linear Solenoid Current] almost match?
Detect the short circuit to ground in transmission forward/reverse clutch pressure solenoid circuit.
Judge as NG when an abnormal signal is received
from the solenoid driver IC of the transmission forward/reverse clutch
pressure solenoid drive circuit.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
9 V or more
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Signal of malfunction from solenoid driver IC∗
ON
As defined by:
Measured forward & reverse clutch pressure control solenoid current, more than 1.6 A
∗IC: Integrated circuit
Time needed for diagnosis: 1 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0967 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT HIGH
1. —
DTC detecting condition:
Immediately at fault recognition
Trouble symptom:
Engine speed increases abruptly, and cannot start.
After driving with warm up condition, park the vehicle while depressing the brake pedal at “D” range.
2.
Using Subaru Select Monitor, read the data of [Commanded Forward & Reverse Linear Solenoid Current] and [Actual Forward & Reverse Linear Solenoid Current]. TRANSMISSION (DIAGNOSTICS)>Data Monitor
Do [Commanded Forward & Reverse Linear Solenoid Current] and [Actual Forward & Reverse Linear Solenoid Current] almost match?
Detect open circuit or short circuit to power supply in the transfer solenoid circuit.
Judge as NG if an open circuit or a short
circuit to ground is detected more than 10 times via the detection
circuit in the transfer solenoid drive circuit.
EXECUTION CONDITION
Secondary parameters
Execution condition
Target duty cycle
100%
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Malfunction signal from solenoid driver IC∗
10 counts or more
∗IC: Integrated circuit
Time needed for diagnosis: Immediately
Malfunction indicator light illumination: Does not illuminate.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Measure the voltage between TCM connector and chassis ground. (While wiggling the harness)
Connector & terminal
(T10) No. 41 (+) — Chassis ground (−):
Is the voltage 8 V or more?
Even if DTC is detected, the circuit has
returned to a normal condition at this time. Reproduce the failure, and
then perform the diagnosis again.
In this case, the following items may be the cause of fault.
Open circuit or short circuit to ground of
harness between TCM connector and ignition switch connector (IG relay 1
connector for model with push button start)
Poor contact of ignition switch connector (IG relay 1 connector for model with push button start)
Poor contact of ignition switch (IG relay 1 for model with push button start)
Repair the harness and connector.
In this case, repair the following item:
Open circuit or short circuit to ground of
harness between TCM connector and ignition switch connector (IG relay 1
connector for model with push button start)
Poor contact of ignition switch connector (IG relay 1 connector for model with push button start)
Poor contact of ignition switch (IG relay 1 for model with push button start)
General description
OUTLINE OF DIAGNOSIS
Detect the malfunction of ignition SW circuit.
Judge as NG if the ignition SW signals are lost 5 times or more even though the engine is ON.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
10.9 V or more
Engine speed
400 rpm or more
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Count of temporarily discontinuous input of ignition switch
5 counts or more
Time needed for diagnosis: 5 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Detect no input signal from the primary speed sensor.
Judge as NG if there is no input signal from the
primary pulley speed sensor, while the secondary pulley speed sensor
has the input signal although the primary and secondary pulleys are
interlocked via the chain.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
9 V or more
Measured secondary pulley shaft speed
500 rpm or more
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Measured primary pulley shaft speed
0 rpm
Time needed for diagnosis: 0.5 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Detect the no input signal from the secondary speed sensor.
Judge as NG if there is no input signal from the
secondary pulley speed sensor, while the primary pulley speed sensor
has the input signal although the primary and secondary pulleys are
interlocked via the chain.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
9 V or more
Transmission range
Drive
or
Reverse
Measured primary pulley shaft speed
1000 rpm or more
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Measured secondary pulley shaft speed
0 rpm
Time needed for diagnosis: 0.5 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P2757 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT PERFORMANCE/STUCK OFF
1. —
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
Drive the vehicle for one minute or more while keeping such constant speed that [Lock Up Duty Ratio] is 70% or more, and [Front Wheel Speed] is 40 km/h (25 MPH) or more.
Current condition is normal. It is possible that temporary poor contact occurs.
General description
OUTLINE OF DIAGNOSIS
Detect the malfunction of lock-up fluid pressure
control solenoid, and hydraulic circuit, or drive circuit
characteristics (stuck to low pressure side).
Judge as NG if the deviation between engine
speed and turbine speed becomes equal to or larger than the
predetermined value, even though the lock-up command is issued.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
10 V or more
Engine speed
1000 rpm or more
Transmission range
Drive
Commanded duty of torque converter clutch pressure control solenoid
95% or more
Measured turbine shaft speed
Exceeds rpm values in Table 1
Table 1
Engine speed (rpm)
3700
3727
3755
3782
3856
4019
4213
4456
Measured turbine shaft speed (rpm)
0
500
1000
1500
2000
2500
3000
3500
Engine speed (rpm)
4786
5213
5651
6101
6569
7044
7520
Measured turbine shaft speed (rpm)
4000
4500
5000
5500
6000
6500
7000
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Drive the vehicle for one minute or more while keeping such constant speed that [Lock Up Duty Ratio] is 0%, and [Front Wheel Speed] is 5 km/h (3 MPH) or less.
Current condition is normal. It is possible that temporary poor contact occurs.
General description
OUTLINE OF DIAGNOSIS
Detect the malfunction of lock-up fluid pressure
control solenoid and hydraulic circuit, or drive circuit
characteristics (stuck to high pressure side).
Judge as NG if the deviation between engine
speed and turbine speed becomes equal to or smaller than the
predetermined value, even though the lock-up release command is issued.
EXECUTION CONDITION
Secondary parameters
Execution condition
12 V battery system voltage
10 V or more
Engine speed
1000 rpm or more
Transmission range
Drive
Engine torque
Exceeds N·m values in Table 1
Commanded duty of torque converter clutch pressure control solenoid
Current condition is normal. It is possible that temporary poor contact occurs.
General description
OUTLINE OF DIAGNOSIS
Detect the malfunction of the electric oil pump.
Judge as NG when clutch slips are detected while
the clutch slip rotation speed is monitored at ordinary starting of
Auto Start Stop.
The secondary pressures are stored at ordinary
Auto Start Stop and at IG OFF respectively. Judge as NG when the
secondary pressure during Auto Start Stop is lower than the value stored
at ordinary Auto Start Stop and is near the value at IG OFF.
EXECUTION CONDITION
Secondary parameters
Execution condition
Diagnosis 1
Auto Start Stop control status
At starting
Diagnosis 2
Auto Start Stop control status
During Auto Start Stop
DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
Malfunction Criteria
Threshold Value
Diagnosis 1
Change amount of (Turbine speed − Primary rotation speed)
Less than − 4000 rpm/s
Diagnosis 2
Secondary oil pressure learning value voltage during Auto Start Stop − Current secondary pressure voltage
0.044 V or more
Time needed for diagnosis: 3 consecutive times
Malfunction indicator light illumination: Does not illuminate.
TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
TRANSMISSION (DIAGNOSTICS) > Diagnostics with Phenomenon
INSPECTION
Symptoms
Faulty parts
Engine stalls when driving in “D” or “R” range, or selecting “N” → “D”, “N” → “R”.
Control valve
Engine control system
While driving in “D” range, vibration occurs immediately before the stop or engine stalls.
Control valve
Torque converter
Vehicle cannot shift while driving in “D” range.
Control valve
TCM
Shift mechanism
Power supply system
Excessive shock when selecting “N” → “D”, and “N” → “R”.
Control valve
TCM
F&R clutch pack
ATF deterioration or lack
Excessive shock at standing start in “D” range.
Control valve
TCM
F&R clutch pack
ATF deterioration or lack
Engine speed increases abruptly during driving in “D” or “R” range.
Control valve
Secondary pressure sensor
F&R clutch pack
ATF deterioration or lack
Vehicle can not start when depressing the
accelerator pedal in “D” or “R” range, or acceleration is very poor.
(Without abrupt engine increase)
Control valve
F&R clutch pack
Shift mechanism
Parking mechanism
Engine control system
Power supply system
Shift indicator in combination meter displays the position which differs from select lever position.
Inhibitor switch
Select cable related
Combination meter
Manual mode enters even though the select lever and paddle shift switch is not operated.
Manual mode switch
Paddle shift switch
Select lever
TCM
Engine speed increases abruptly in “D” or “R” range, vehicle can not start.
F&R clutch pack
Select cable related
Manual mode can not be set
Select lever
TCM
TRANSMISSION (DIAGNOSTICS) > General Scan Tool
OPERATION
1. HOW TO USE GENERAL SCAN TOOL
1.
Prepare a scan tool (general scan tool) required by SAE J1978.
2.
Connect the general scan tool to data link
connector located in the lower portion of the instrument panel (on the
driver’s side). COMMON(diag)>Data Link Connector
3.
Using the general scan tool, call up each data. General scan tool functions consist of:
(1)
MODE $01: Current powertrain diagnostic data
(2)
MODE $02: Powertrain freeze frame data
(3)
MODE $03: Emission-related powertrain DTC
(4)
MODE $04: Clear/Reset emission-related diagnostic information
(5)
MODE $07: Initial emission-related powertrain DTC
(6)
MODE $09: Request vehicle information
(7)
MODE $0A: Emission-related DTC
4.
Read out the data according to repair
procedures. (For detailed operation procedures, refer to the general
scan tool operation manual.)
Refer to the mode used to clear or reset emission-related diagnostic information.
Refer to the manufacturer’s operation manual for
the general scan tool to clear the emission-related diagnostic
information (MODE $04).
Initial diagnosis of electronic throttle control
is performed after memory clearance. Wait for 10 seconds or more after
turning the ignition switch to ON, and then start the engine.
TRANSMISSION (DIAGNOSTICS)>Check List for Interview
Continuous