FORESTER 20MY PubNo: G8270BE Version: 006

POWER ASSISTED SYSTEM (POWER STEERING) > General Description　

SPECIFICATION

Whole system	Minimum turning radius:	m (ft)	5.4 (17.72)
	Steering angle	Inner wheel	38.4°±1.5°
	Steering angle	Outer wheel	33.5°±1.5°
	Steering wheel diameter:	mm (in)	370 (14.57)
	Lock-to-lock revolution number		2.66
Gearbox	Type		Rack & pinion type
Gearbox	Backlash		0 (automatic adjusting)
Motor (Temperature 20°C (68°F))	Rated voltage:	V	12
	Rated torque:	N·m (kgf-m, ft-lb)	5.07 (0.52, 3.74)
	Rated revolution speed:	r/min	790
	Rated current:	A	85
	Rated output:	W	419

Steering wheel

Free play:

mm (in)

17 (0.67) or less

Column assembly & steering

Clearance:

Between steering wheel and cover assembly ‐ column

mm (in)

4 — 6 (0.16 — 0.24) or less

Steering gearbox

Sliding resistance:	N (kgf, lbf)	360 (37, 81) or less Difference between right and left sliding resistance: 20% or less
Rack shaft play in radial direction: mm (in)	Right-turn steering	Both amplitudes: 0.6 (0.024) or less
Rack shaft play in radial direction: mm (in)	Left-turn steering	Both amplitudes: 0.6 (0.024) or less
Input shaft play: mm (in)	In radial direction	Both amplitudes: 0.6 (0.024) or less
Input shaft play: mm (in)	In axial direction	0.27 (0.0106) or less
Rotational resistance:	N (kgf, lbf)	Maximum allowable value: 20 (2, 4.5) or less Difference between right and left sliding resistance: 20% or less

Steering effort (with power steering assist)

At standstill on paved road with engine idling:	N (kgf, lbf)	31 (3.2, 7) or less
At standstill on paved road with engine stalled:	N (kgf, lbf)	294.2 (30, 66.2) or less

POWER ASSISTED SYSTEM (POWER STEERING) > General Description　

COMPONENT

1. STEERING WHEEL AND COLUMN

(1)	Bushing	(9)	Switch ASSY steering (MID)	Tightening torque: N·m (kgf-m, ft-lb)
(2)	Column assembly steering	(10)	Steering heater unit (model with steering heater)	T1:	20 (2.0, 14.8)
(3)	Switch ASSY combination	(11)	Steering heater switch (model with steering heater)	T2:	39 (4.0, 28.8)
(4)	Column cover UPR	(12)	Steering wheel
(5)	Column cover LWR	(13)	Cover spoke
(6)	Cap key cylinder (model with keyless access with push button start)	(14)	Satellite switch
(7)	Cover steering wheel LWR	(15)	AIRBAG MODULE
(8)	Paddle shift

2. STEERING GEARBOX

(1)	Dust boots	(10)	Stiffener	Tightening torque: N·m (kgf-m, ft-lb)
(2)	Clip boot tie-rod end	(11)	Pad pressure	T1:	24 (2.4, 17.7)
(3)	Tie-rod end	(12)	Spring gearbox	T2:	27 (2.8, 19.9)
(4)	Clip boot tie-rod	(13)	Adjusting screw	T3:	60 (6.1, 44.3)
(5)	Boot steering gearbox	(14)	Lock nut	T4:	85 (8.7, 62.7)
(6)	Band boot	(15)	Cotter pin	T5:	110 (11.2, 81.1)
(7)	Tie-rod	(16)	Castle nut
(8)	Universal joint assembly steering	(17)	Bolt
(9)	Steering gearbox assembly

POWER ASSISTED SYSTEM (POWER STEERING) > General Description　

CAUTION

When performing service operation, refer to “Repair Contents” in “General Description”. REPAIR CONTENTS>Repair Contents
When performing a repair, identify the cause of trouble and avoid unnecessary removal, disassembly and replacement.
Some vehicle components are extremely hot immediately after driving. Be wary of receiving burns from heated parts.
Use SUBARU genuine grease, the recommended or equivalent. Do not mix grease etc. of different grades or manufacturers.
Be sure to tighten fasteners including bolts and nuts to the specified torque.
Always use the jack-up point when the shop jacks or rigid racks are used to support the vehicle.
Do not secure a part in a vise directly. Place cushioning materials such as wood blocks, aluminum plates, or waste cloth between the part and the vise.
When removing, installing or replacing the VDCCM&H/U, VDCCM&H/U bracket, steering wheel or steering angle sensor (steering roll connector), perform “VSC(VDC) Centering Mode” of the VDC. VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)>ADJUSTMENT > VDC SENSOR MIDPOINT SETTING MODE
When the wheel alignment has been adjusted, perform the following adjustment.
- Lane keep assist learning value clear (model with EyeSight): EyeSight (DIAGNOSTICS)>Clear Active Lane Keep System Learning Value>OPERATION
- VDC sensor midpoint setting mode: VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)>ADJUSTMENT

POWER ASSISTED SYSTEM (POWER STEERING) > General Description　

PREPARATION TOOL

1. SPECIAL TOOL

ILLUSTRATION	TOOL NUMBER	DESCRIPTION	REMARKS
	34099PA100	SPANNER	Used for measuring the rotational resistance of steering gearbox assembly.
	—	SUBARU SELECT MONITOR 4	Used for setting of each function and troubleshooting for electrical system. For detailed operation procedures, refer to “Help” of application.

2. GENERAL TOOL

TOOL NAME	REMARKS
Steering wheel puller	Used for removing the steering wheel.
Ball joint puller	Used for disconnecting tie-rod end.
Dial gauge	Used for measuring the runout of steering gearbox assembly.
Magnet stand	Used for measuring the runout of steering gearbox assembly.
Circuit tester	Used for measuring resistance, voltage and current.
DST-i	Used together with Subaru Select Monitor 4.
C-clamp	Used when inspecting steering gearbox assembly.

POWER ASSISTED SYSTEM (POWER STEERING) > Relay and Fuse　

LOCATION

Main fuse box (M/B)	SBF 80 A (power steering CM)	(A)
Fuse & relay box (F/B)	Fuse 7.5 A (power steering CM)	(B)
Fuse & relay box (F/B)	Fuse 25 A (steering heater relay)	(C)
Connector holder (C/H)	Steering heater relay	(D)

For other related fuses, refer to the wiring diagram. WIRING SYSTEM>Power Supply Circuit>WIRING DIAGRAM

POWER ASSISTED SYSTEM (POWER STEERING) > Relay and Fuse　

REMOVAL

Before handling the airbag system components, refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. AIRBAG SYSTEM>General Description>CAUTION

1. STEERING HEATER RELAY

1.

Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. REPAIR CONTENTS>NOTE > BATTERY

2.

Remove the cover LWR driver. EXTERIOR/INTERIOR TRIM>Instrument Panel Lower Cover>REMOVAL

3.

Remove the knee airbag module. AIRBAG SYSTEM>Knee Airbag Module>REMOVAL

4.

Remove the body integrated unit. SECURITY AND LOCKS>Body Integrated Unit>REMOVAL

5.

Remove the steering heater relay.

POWER ASSISTED SYSTEM (POWER STEERING) > Relay and Fuse　

INSTALLATION

Before handling the airbag system components, refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. AIRBAG SYSTEM>General Description>CAUTION

1. STEERING HEATER RELAY

1.

Install the steering heater relay.

2.

Install the body integrated unit (fuse & relay box).

Tightening torque:

7.5N·m (0.8kgf-m, 5.5ft-lb)

3.

Install the knee airbag module. AIRBAG SYSTEM>Knee Airbag Module>INSTALLATION

4.

Install the cover LWR driver.

5.

Connect the ground terminal to battery sensor. REPAIR CONTENTS>NOTE > BATTERY

POWER ASSISTED SYSTEM (POWER STEERING) > Relay and Fuse　

INSPECTION

1. CHECK FUSE

1.

Remove the fuse and inspect visually.

2.

If the fuse is blown out, replace the fuse.

If the fuse is blown again, check the system wiring harness.

2. CHECK RELAY

1.

Check the resistance between relay terminals.

Terminal No.	Inspection conditions	Standard	Circuit
1 — 2	Always	1 MΩ or more
1 — 2	Apply battery voltage between terminals 4 and 3.	Less than 1 Ω

2.

Replace the relay if the inspection result is not within the standard value.

POWER ASSISTED SYSTEM (POWER STEERING) > Power Steering System　

WIRING DIAGRAM

Refer to “Electric Power Steering System” in the wiring diagram. WIRING SYSTEM>Electric Power Steering System>WIRING DIAGRAM

POWER ASSISTED SYSTEM (POWER STEERING) > Power Steering System　

INSPECTION

1. BASIC INSPECTION

For inspection, refer to “Basic Diagnostic Procedure” of “POWER STEERING (DIAGNOSTICS)” section. POWER STEERING (DIAGNOSTICS)>Basic Diagnostic Procedure

2. SYSTEM BLOCK DIAGRAM

For system block diagram, refer to “System Block Diagram” in “POWER STEERING (DIAGNOSTICS)”. POWER STEERING (DIAGNOSTICS)>General Description>SYSTEM BLOCK DIAGRAM

3. MODULE I/O SIGNAL

For the specification (electrical component), refer to “Control Module I/O Signal” of “POWER STEERING (DIAGNOSTICS)” section. POWER STEERING (DIAGNOSTICS)>Control Module I/O Signal>ELECTRICAL SPECIFICATION

POWER ASSISTED SYSTEM (POWER STEERING) > Power Steering System　

NOTE

For procedure of each component in the power steering system, refer to the respective section.

Steering wheel: POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel
Universal joint assembly: POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint
Steering column: POWER ASSISTED SYSTEM (POWER STEERING)>Steering Column
Electric power steering gearbox: POWER ASSISTED SYSTEM (POWER STEERING)>Electric Power Steering Gearbox
Power steering control module (with built-in gearbox): POWER ASSISTED SYSTEM (POWER STEERING)>Power Steering Control Module

POWER ASSISTED SYSTEM (POWER STEERING) > Steering Wheel　

REMOVAL

Before handling the airbag system components, always refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. AIRBAG SYSTEM>General Description>CAUTION

1.

Set the tire to the straight-ahead position.

2.

Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. REPAIR CONTENTS>NOTE > BATTERY

3.

Remove the driver’s airbag module. AIRBAG SYSTEM>Driver’s Airbag Module>REMOVAL

4.

Remove the steering wheel.

Always use the steering wheel puller for removal to avoid deforming the steering wheel.
If the steering wheel has been removed, make sure that the steering roll connector is not turned from the original position.

Preparation tool:

Steering wheel puller

(1)

Disconnect the connector and remove the nut.

(2)

Put an alignment mark (a) using a ruler as shown in the figure, and remove the steering wheel.

(A)	Model with steering heater

POWER ASSISTED SYSTEM (POWER STEERING) > Steering Wheel　

INSTALLATION

Before handling the airbag system components, refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. AIRBAG SYSTEM>General Description>CAUTION
If the steering wheel has been removed, make sure that the steering roll connector is not turned from the original position.
If the steering wheel and steering angle sensor are removed, perform “VSC(VDC) Centering Mode” of the VDC. VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)>ADJUSTMENT > VDC SENSOR MIDPOINT SETTING MODE

1.

Align the center position of the steering roll connector. AIRBAG SYSTEM>Roll Connector>ADJUSTMENT

2.

Install the steering wheel.

Tightening torque:

Steering wheel: 39 N·m (4.0kgf-m, 28.8ft-lb)

Clearance:

Between column cover assembly and steering wheel: 4 — 6 mm (0.16 — 0.24in)

3.

Install the driver’s airbag module. AIRBAG SYSTEM>Driver’s Airbag Module>INSTALLATION

4.

Connect the ground terminal to battery sensor. REPAIR CONTENTS>NOTE > BATTERY

POWER ASSISTED SYSTEM (POWER STEERING) > Steering Wheel　

DISASSEMBLY

1.

Remove the screws on the back of the steering wheel.

Model without paddle shift: upper side two locations
Model with paddle shift: four locations

2.

Disconnect the connector and remove the paddle shift switch. (Model with paddle shift)

3.

Release the claws and remove the screws, then detach the cover spoke.

4.

Remove the cover steering wheel LWR.

Carefully remove the cover steering wheel LWR and the steering wheel. Do not pull with excessive force. Otherwise, heat wire between cover steering wheel LWR and steering wheel may be damaged. (Model with steering heater)

(1)

Remove the connectors and screws. (Model with MID switch and model with steering heater switch)

(2)

Release the claws and harness clips, and detach the cover steering wheel LWR.

For model with steering heater, disconnect the connector with the cover steering wheel LWR removed from steering wheel, and remove the steering heater unit. Also, remove the heater elements RH and LH secured with double-sided tape from the cover steering wheel LWR.

5.

Release the claws and remove the screws, then detach the satellite switch.

6.

Release the claws, and then remove the switch assembly steering (MID) switch. (Model with MID switch)

7.

Release the connector, screws and claws, and remove the steering heater switch and steering heater unit. (Model with steering heater)

POWER ASSISTED SYSTEM (POWER STEERING) > Steering Wheel　

ASSEMBLY

Securely install the switch and the cover steering wheel LWR. Improper insertion of the pins or claws of the switch and the cover steering wheel LWR may cause improper installation.
When installing the heater steering wheel and the cover steering wheel LWR for models with steering heater, be careful of the following:
- Attach the heater element to the cover steering wheel LWR so that it is not twisted or does not interfere with switches.
- Be careful not to allow the heater element to be caught in steering frame, unit and the cover steering wheel LWR.

1.

Install the switch assembly steering (MID).

2.

Install the steering heater switch and steering heater unit to the cover steering wheel LWR. (Model with steering heater)

3.

Install the satellite switch.

4.

Install the cover steering wheel LWR.

Secure the heater element on the cover steering wheel LWR using double-sided tape. Refer to the figure below to attach the heater element and double-sided tape symmetrically.

(a)

Heater element and double-sided tape

(b)

Cover steering wheel LWR

5.

Install the cover spoke.

6.

Install the paddle shift switch. (Model with paddle shift)

7.

Install the screws at two locations on upper back side of the steering wheel. (Model without paddle shift)

POWER ASSISTED SYSTEM (POWER STEERING) > Steering Wheel　

INSPECTION

1. PADDLE SHIFT SWITCH

1.

Measure the resistance between connector terminals.

Preparation tool:

Circuit tester

Terminal No.	Inspection conditions	Standard
3 — 4	Operate the + side of paddle shift assembly and hold it.	Less than 10 Ω
1 — 4	Operate the − side of paddle shift assembly and hold it.	Less than 10 Ω
1 — 4 3 — 4	Do not operate the paddle shift assembly.	1 MΩ or more

2.

Replace the paddle shift switch if the inspection result is not within the standard value.

2. SATELLITE SWITCH ASSEMBLY

Audio (navigation) switch: ENTERTAINMENT & MONITORING>Switches and Harness>INSPECTION > SATELLITE SWITCH ASSY
EyeSight steering switch: EyeSight>Switches and Harness>INSPECTION > EyeSight STEERING SWITCH
Cruise control command switch: CRUISE CONTROL SYSTEM>Cruise Control Command Switch>INSPECTION

3. MULTI INFORMATION DISPLAY SWITCH

Refer to “Multi information display switch” of “INSTRUMENTATION/DRIVER INFO” section. INSTRUMENTATION/DRIVER INFO>Switches and Harness>INSPECTION > MULTI INFORMATION DISPLAY SWITCH

4. STEERING HEATER SWITCH

1.

Measure the resistance between connector terminals.

Preparation tool:

Circuit tester

Terminal No.	Inspection conditions	Standard
4 — 5	Operate the switch and hold it.	Less than 1 Ω
4 — 5	Do not operate the switch.	1 MΩ or more
2 — 6	Always	Less than 1 Ω

2.

Apply battery voltage between the connector terminals to check lighting condition of illumination and indicator inside the switch.

When applying battery voltage, do not mix up the positive (+) side and the negative (−) side.

Incorrect polarity connection may cause LED damage inside the switch.

Terminal No.	Inspection conditions	Specification
3 (+) — 1 (−)	Apply battery voltage.	Illumination (mark) turns on.
4 (+) — 7 (−)	Apply battery voltage.	Indicator turns on.
3 (+) — 1 (−) 4 (+) — 7 (−)	Apply battery voltage simultaneously.	Illumination (mark) and indicator turn on in dimmed condition at one level.

3.

Replace the steering heater switch if it is found defective.

5. STEERING WHEEL HEATER

1.

Measure the resistance between connector terminals.

Preparation tool:

Circuit tester

Terminal No.	Inspection conditions	Standard
Thermistor: 2 — 3	Ambient temperature: 10 — 30°C (50 — 86°F)	8.13 — 18.43 kΩ
Thermostat: 5 — 1	Ambient temperature: 10 — 30°C (50 — 86°F)	1.8 — 2.4 Ω

2.

Replace the steering wheel if the inspection result is not within the standard value.

POWER ASSISTED SYSTEM (POWER STEERING)　

WIRING DIAGRAM

Refer to “STEERING HEATER SYSTEM” in the wiring diagram. WIRING SYSTEM>Steering Heater System>WIRING DIAGRAM

POWER ASSISTED SYSTEM (POWER STEERING)　

ELECTRICAL SPECIFICATION

1. STEERING HEATER UNIT

Terminal No.	Contents	Measuring condition	Standard
A No. 2	Not used	—	—
A No. 3 ←→ Chassis ground	Heater unit GND	Always	Less than 1 Ω
A No. 4 ←→ Chassis ground	Heater unit power supply input	Ignition switch ON	10 — 14 V
B No. 1 ←→ Chassis ground	Heater switch power supply input	Ignition switch ON	10 — 14 V
B No. 2 ←→ Chassis ground	Heater switch input	Turn the ignition switch to ON, and press and hold the heater switch.	9 — 14 V
B No. 4	Indicator light output	—	∗
D No. 1 ←→ Chassis ground	Heater GND	Ignition switch ON, heater switch ON	Less than 1 V
D No. 2 ←→ Chassis ground	Thermistor GND	Ignition switch ON, heater switch ON	Less than 1 V
D No. 3 ←→ Chassis ground	Thermistor input	Ignition switch ON, heater switch ON	1.5 — 4.5 V
D No. 5 ←→ Chassis ground	Heater input	Ignition switch ON, heater switch ON	9 — 14 V

∗: Illuminates when the ignition switch and heater switch are turned to ON.

Connect the each connector of the unit before checking.

POWER ASSISTED SYSTEM (POWER STEERING)　

INSPECTION

1. CHECK STEERING HEATER SYSTEM

Symptoms	Reference
The steering heater does not operate.	POWER ASSISTED SYSTEM (POWER STEERING)>INSPECTION > THE STEERING HEATER DOES NOT OPERATE
The temperature of steering heater increases excessively.	POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>INSPECTION > STEERING WHEEL HEATER
The steering heater does not stop.	POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>INSPECTION > STEERING HEATER SWITCH

2. THE STEERING HEATER DOES NOT OPERATE

1. CHECK POWER SUPPLY INPUT.

1.

Disconnect the ground terminal from battery sensor and wait for 60 seconds or more. REPAIR CONTENTS>NOTE > BATTERY

2.

Disconnect the connector between steering roll connector and steering heater unit.

3.

Connect the ground terminal to the battery sensor and turn the ignition switch to ON.

4.

Measure the steering roll connector voltage.

Connector & terminal

(ST12) No. 4 (+) — No. 3 (−)

Is the voltage 10 — 14 V?

2

8

2. CHECK STEERING HEATER SWITCH.

Check the steering heater switch. POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>INSPECTION > STEERING HEATER SWITCH

Is the steering heater switch OK?

3

Replace the steering heater switch. POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>DISASSEMBLY

3. CHECK STEERING HEATER UNIT.

Check the steering heater unit. POWER ASSISTED SYSTEM (POWER STEERING)>ELECTRICAL SPECIFICATION > STEERING HEATER UNIT

Is the steering heater unit OK?

4

Replace the steering heater unit. POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>DISASSEMBLY

4. CHECK STEERING WHEEL.

Check the steering wheel. POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>INSPECTION > STEERING WHEEL HEATER

Is the steering wheel OK?

5

Replace the steering wheel. POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel

5. CHECK HARNESS.

Check the harness between steering roll connector and steering heater unit.

Connector & terminal

(ST11) No. 3 — (ST14) No. 1:

(ST11) No. 4 — (ST14) No. 4:

Is harness normal?

6

Repair or replace the harness.

6. CHECK HARNESS.

Check the harness between steering heater switch and steering roll connector.

Connector & terminal

(ST8) No. 1 — (ST11) No. 4:

Is harness normal?

7

Repair or replace the harness.

7. CHECK HARNESS.

Check the harness between steering heater switch and steering heater unit.

Connector & terminal

(ST8) No. 4 — (ST14) No. 2:

(ST8) No. 2 — (ST14) No. 3:

Is harness normal?

8

Repair or replace the harness.

8. CHECK ROLL CONNECTOR (HEATER).

1.

Turn the ignition switch to OFF.

2.

Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. REPAIR CONTENTS>NOTE > BATTERY

3.

Remove the steering roll connector. AIRBAG SYSTEM>Roll Connector>REMOVAL

4.

Measure the resistance between connectors.

Preparation tool:

Circuit tester

Terminal No.	Inspection conditions	Standard
G3 — H2	Always	Less than 1 Ω
G4 — H4	Always	Less than 1 Ω

Is the measured value within the standard value?

9

Replace the steering roll connector. AIRBAG SYSTEM>Roll Connector

9. CHECK HARNESS.

Measure the resistance between connector of steering roll connector and body ground and between relay holder and body ground.

Connector & terminal

(i289) No. 2 — Chassis ground:

(i280) No. 3 — Chassis ground:

Is the resistance less than 10 Ω?

10

Repair or replace the harness.

10. CHECK HARNESS.

Check the harness between relay holder and steering roll connector.

Connector & terminal

(i280) No. 5 — (i289) No. 4:

Is harness normal?

11

Repair or replace the harness.

11. CHECK FUSE.

1.

Turn the ignition switch to OFF.

2.

Check the fuse No. 22 in the fuse & relay box.

Is the fuse OK?

12

Replace the fuse.

12. CHECK RELAY.

Check the steering heater relay. POWER ASSISTED SYSTEM (POWER STEERING)>Relay and Fuse

Is the steering heater relay OK?

13

Replace the steering heater relay.

13. CHECK BATTERY VOLTAGE.

Measure the battery voltage.

Is the battery OK?

It is possible that temporary poor contact occurs. Restore the parts and check it again.

Check the battery. STARTING/CHARGING SYSTEMS(H4DO)>Battery>INSPECTION

POWER ASSISTED SYSTEM (POWER STEERING)　

NOTE

For procedure of each component in the steering heater system, refer to the respective section.

Steering wheel
- Removal: POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>REMOVAL
- Installation: POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>INSTALLATION
Steering heater switch
- Disassembly: POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>DISASSEMBLY
- Assembly: POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>ASSEMBLY

POWER ASSISTED SYSTEM (POWER STEERING) > Universal Joint　

REMOVAL

1.

Set the steering wheel to the straight-ahead position.

2.

Adjust the tilt position of the steering column to the neutral position.

Always place the tilt lever to the lock position after the steering column is adjusted.

3.

Prevent the steering wheel from turning using the seat belt.

4.

Remove the under cover front. EXTERIOR/INTERIOR TRIM>Front Under Cover>REMOVAL

5.

Remove the universal joint assembly steering.

(1)

Place alignment marks on the universal joint assembly steering.

Place alignment marks on the following positions.

Between the column assembly steering and the universal joint assembly steering
Between the steering gearbox assembly and the universal joint assembly steering (only when the guide is not installed)

(2)

Remove the bolt, and remove the universal joint assembly steering.

Do not remove the guide camera.

POWER ASSISTED SYSTEM (POWER STEERING) > Universal Joint　

INSTALLATION

1.

Before installation, check the universal joint assembly steering. POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint>INSPECTION

2.

Adjust the tilt position of the steering column to the neutral position.

Always place the tilt lever to the lock position after the steering column is adjusted.

3.

Install the universal joint assembly steering.

Be sure to align the protrusion section (a) of the column shaft side with the cutout (a) of the serration. If another cutout portions (d) are used for alignment, the bolt of the universal joint assembly steering cannot be assembled.
Be sure to follow the tightening order and tightening torque of the universal joint assembly steering to avoid the steering effort from becoming heavy. After confirming that the steering column position is in the neutral position, tighten the universal joint assembly steering.
When tightening the mounting bolts of the universal joint assembly steering, always tighten the gearbox side bolts first.
Always place the tilt lever to the lock position after the steering column is adjusted.

(1)

Match the alignment marks that have been marked when removing with the column shaft (c) and the cutout portion (a) at the serrations of the yoke (b).

(2)

Connect the universal joint assembly steering with the column shaft.

(A)

Column shaft side

(B)

Gearbox side

(3)

Install the universal joint assembly steering to the serrations of the gearbox assembly by matching the alignment marks that have been marked when removing and the cutout portion of the guide (a). (Use the alignment mark only when the guide is not installed.)

(4)

Tighten the bolts on the gearbox side first, and then the column shaft side.

Tightening torque:

24 N·m (2.4kgf-m, 17.7ft-lb)

Clearance:

Universal joint assembly steering coupling to adjacent parts: 15 mm (0.59in) or more

4.

Unfasten the seat belt and make the steering wheel turn freely.

5.

Install the under cover front.

Tightening torque:

18 N·m (1.8kgf-m, 13.3ft-lb)

POWER ASSISTED SYSTEM (POWER STEERING) > Universal Joint　

INSPECTION

Check for wear, damage or any other faults.

1.

Check the universal joint assembly steering for excessive looseness.

Service limit:

Play of the universal joint assembly steering: 0 mm (0 in)

2.

Measure the swing load of the universal joint assembly steering.

(1)

Place the universal joint assembly steering between wooden blocks and fix it on a vise.

(2)

With the yoke (a) of gearbox side facing up, measure the swing load in two directions.

Service limit:

Maximum load: 4.5 N (0.46 kgf, 1.01 lbf) or less

(3)

With the yoke (b) of the column assembly steering side facing up, measure the swing load in two directions.

Service limit:

Maximum load: 5.4 N (0.55 kgf, 1.21 lbf) or less

(4)

Replace as necessary, if it is found defective.

POWER ASSISTED SYSTEM (POWER STEERING) > Steering Column　

REMOVAL

Before handling the airbag system components, always refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. AIRBAG SYSTEM>General Description>CAUTION

1.

Adjust the tilt position of the steering column to the neutral position and the telescopic position to the longest position.

Always place the tilt lever to the lock position after the steering column is adjusted.

2.

Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. REPAIR CONTENTS>NOTE > BATTERY

3.

Remove the cover LWR driver. EXTERIOR/INTERIOR TRIM>Instrument Panel Lower Cover>REMOVAL

4.

Remove the knee airbag module. AIRBAG SYSTEM>Knee Airbag Module>REMOVAL

5.

Remove the driver’s airbag module. AIRBAG SYSTEM>Driver’s Airbag Module>REMOVAL

6.

Remove the steering wheel. POWER ASSISTED SYSTEM (POWER STEERING)>Steering Wheel>REMOVAL

7.

Remove the column cover assembly.

(1)

Release the clips and claws, and remove the cover steering UPR.

(2)

Remove the screws.

(3)

Release the claw, and remove the column cover LWR as shown in the figure.

Release the claws on RH side in the same procedure as on the LH side.
For models with keyless access with push button start, remove the cap key cylinder.

(4)

Release the claw, and remove the column cover UPR as shown in the figure.

8.

Remove the switch assembly combination.

(1)

Disconnect the connector.

(2)

Using pliers, loosen the clamp.

(3)

With the clamp loosened, release the claw using a flat tip screwdriver wrapped with protective tape, and remove the switch assembly combination.

Do not pry off forcibly. Otherwise, the claws may be damaged.

9.

Remove all connectors from the column assembly steering.

10.

Remove the universal joint assembly steering. POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint>REMOVAL

To prevent damage to the universal joint assembly steering and improper steering effort, make sure to remove the universal joint assembly steering.

11.

Remove the nut under the beam COMPL steering which secures the column assembly steering.

12.

Pull out the column assembly steering from the hole on toe board.

Do not loosen the tilt lever when the column assembly steering is not secured to the vehicle.

13.

Remove the ignition key lock. SECURITY AND LOCKS>Ignition Key Lock>REPLACEMENT

POWER ASSISTED SYSTEM (POWER STEERING) > Steering Column　

INSTALLATION

When removing, installing or replacing the VDCCM&H/U, VDCCM&H/U bracket, steering wheel or steering angle sensor (steering roll connector), perform “VSC(VDC) Centering Mode” of the VDC. VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)>ADJUSTMENT > VDC SENSOR MIDPOINT SETTING MODE
Before handling the airbag system components, always refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. AIRBAG SYSTEM>General Description>CAUTION

1.

Install the bushing (a) to the toe board from the passenger compartment side.

2.

Insert the end of the column assembly steering into the toe board bushing.

3.

Tighten the column assembly steering installation nut located under the beam steering COMPL with the tilt lever fixed.

Tightening torque:

20 N·m (2 kgf-m, 14.8ft-lb)

4.

Install the ignition key lock. SECURITY AND LOCKS>Ignition Key Lock>REPLACEMENT

5.

Install the switch assembly combination.

6.

Connect all the connectors under the instrument panel.

7.

Install the universal joint assembly steering. POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint>INSTALLATION

Always install the universal joint assembly steering after installing the steering column to avoid damage to the universal joint assembly steering.
Be sure to follow the tightening order and tightening torque of the universal joint assembly steering to avoid the steering effort from becoming heavy. After confirming that the steering column position is in the neutral position, tighten the universal joint assembly steering.
Always place the tilt lever to the lock position after the steering column is adjusted.

8.

Install the knee airbag module. AIRBAG SYSTEM>Knee Airbag Module>INSTALLATION

9.

Install the cover LWR driver.

10.

Install the column cover assembly.

11.

Align the center position of the steering roll connector. AIRBAG SYSTEM>Roll Connector>ADJUSTMENT

12.

Install the steering wheel.

Tightening torque:

Steering wheel: 39 N·m (4 kgf-m, 28.8ft-lb)

Clearance:

Between column cover assembly and steering wheel: 4 — 6 mm (0.16 — 0.24in)

13.

Install the driver’s airbag module. AIRBAG SYSTEM>Driver’s Airbag Module>INSTALLATION

14.

Connect the ground terminal to battery sensor. REPAIR CONTENTS>NOTE > BATTERY

POWER ASSISTED SYSTEM (POWER STEERING) > Steering Column　

INSPECTION

1. UNIT INSPECTION

Check the following items, and if there is anything out of standard value, it is considered to be damaged. If so, replace it with a new part.

Measure the whole length of the column assembly steering.

Standard: Overall length L

Tilt and telescopic column (measure while minimized)

806.5^+1.5_−1.5 mm (31.75^+0.059_−0.059in)
Check the steering wheel deflection in axial and vertical directions.

Specification:

Axial deflection A (deflection of steering wheel)

Less than 6 mm (0.24in)

Vertical deflection L (runout of steering wheel)

Less than 17 mm (0.68in)

2. INSPECTION OF AIRBAG SYSTEM

Refer to “AIRBAG SYSTEM” section for airbag inspection procedure. AIRBAG SYSTEM>Driver’s Airbag Module>INSTALLATION

POWER ASSISTED SYSTEM (POWER STEERING) > Electric Power Steering Gearbox　

REMOVAL

The power steering control module continues to operate after the engine stops and calculates the temperature in the control module. Therefore, before starting service of the power steering system which requires disconnection of the connector, stop the engine and allow approx. 30 minutes until the control module becomes cold.
Be careful not to let any foreign matter (dust, water, oil, etc.) enter into the power steering control module connector when removing or installing. If a foreign matter enters, completely remove it.

1.

Remove the ground terminal from battery sensor. REPAIR CONTENTS>NOTE > BATTERY

2.

Lift up the vehicle, and then remove the front wheels.

3.

Remove the under cover front. EXTERIOR/INTERIOR TRIM>Front Under Cover>REMOVAL

4.

Remove the crossmember support rear and the crossmember support front. FRONT SUSPENSION>Crossmember Support>REMOVAL

5.

Remove the front exhaust pipe. EXHAUST(H4DO)>Front Exhaust Pipe>REMOVAL

6.

Remove the stabilizers. FRONT SUSPENSION>Stabilizer>REMOVAL > STABILIZER

7.

Disconnect the tie-rod end.

Be careful not to damage the boot of the ball joint.

(1)

Remove the cotter pin (a).

(2)

Remove the castle nut (b).

(3)

Using a ball joint puller (d), remove the tie-rod end (c).

Preparation tool:

Ball joint puller

8.

Remove the universal joint assembly steering. POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint>REMOVAL

9.

Disconnect the power steering harness connector and remove the harness clamp.

10.

Remove the steering gearbox assembly from the crossmember COMPL front.

When lowering the transmission jack, make sure that the tie-rod end and the drive shaft boot do not interfere. The drive shaft boot may be damaged.

(1)

Support the steering gearbox assembly from the bottom side using a transmission jack.

(2)

Remove the bolts securing the steering gearbox assembly and stiffener to the crossmember COMPL front.

(3)

Lower the transmission jack slowly, and lower the steering gearbox assembly.

POWER ASSISTED SYSTEM (POWER STEERING) > Electric Power Steering Gearbox　

INSTALLATION

When raising the transmission jack, make sure that the tie-rod end and the drive shaft boot do not interfere. The drive shaft boot may be damaged.
For parts which are not reusable, always use new parts.

1.

Install the steering gearbox assembly and stiffener to the crossmember COMPL.

Always use new bolts, since the mounting bolts of the steering gearbox assembly are lubricated.

Tightening torque:

Refer to “COMPONENT” of “General Description” for the tightening torque. POWER ASSISTED SYSTEM (POWER STEERING)>General Description>COMPONENT > STEERING GEARBOX

2.

Connect the power steering harness connector and install the harness clamp.

3.

Install the universal joint assembly steering. POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint>INSTALLATION

4.

Connect the tie-rod ends.

Do not apply grease, etc. to the tapered portion of ball stud.

(1)

Tighten the castle nut.

If the ball stud hole and the cutout portion of the castle nut are not aligned after tightening, tighten the castle nut within the range of 60° to align with each other.

Tightening torque:

27 N·m (2.8kgf-m, 19.9ft-lb)

(2)

Install a new cotter pin.

5.

Install the stabilizer. FRONT SUSPENSION>Stabilizer>INSTALLATION > STABILIZER

6.

Install the front exhaust pipe. EXHAUST(H4DO)>Front Exhaust Pipe>INSTALLATION

7.

Install the crossmember support front and the crossmember support rear. FRONT SUSPENSION>Crossmember Support>INSTALLATION

8.

Install the under cover front.

Tightening torque:

18 N·m (1.8kgf-m, 13.3ft-lb)

9.

Install the front wheels and lower the vehicle.

Tightening torque:

120 N·m (12.2kgf-m, 88.5ft-lb)

10.

Connect the ground terminal to battery sensor. REPAIR CONTENTS>NOTE > BATTERY

11.

After adjusting toe-in and steering angle, tighten the lock nut on tie-rod end.

When the wheel alignment has been adjusted, perform the following adjustment.

Lane keep assist learning value clear (model with EyeSight): EyeSight (DIAGNOSTICS)>Clear Active Lane Keep System Learning Value>OPERATION
VDC sensor midpoint setting mode: VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)>ADJUSTMENT

Tightening torque:

85 N·m (8.7kgf-m, 62.7ft-lb)

When adjusting toe-in, hold the boot steering gearbox as shown to prevent it from being rotated or twisted. If it becomes twisted, straighten it.

POWER ASSISTED SYSTEM (POWER STEERING) > Electric Power Steering Gearbox　

DISASSEMBLY

Nut for fixing the rack is on the driver’s side only. When removing the tie-rod on the passenger’s side, turn over the boot ‐ steering gearbox on the driver’s side, and fix the rack during operation.
When fixing the steering gearbox assembly in a vise, apply a wooden piece on the flange portion.

1.

Remove the tie-rod end (a) and lock nut (b) from the steering gearbox assembly.

2.

Remove the clip boot tie-rod (c) located outside the boot steering gearbox using the pliers, and then slide the boot steering gearbox to the tie-rod end side.

3.

Remove the tie-rod (b) from the gearbox assembly.

(1)

Using a flat tip screwdriver, remove the band boot (a) from the boot steering gearbox.

Replace the boot steering gearbox or the band boot (a) if there is damage, cracks or deterioration.

(2)

Remove the tie-rod (b).

POWER ASSISTED SYSTEM (POWER STEERING) > Electric Power Steering Gearbox　

ASSEMBLY

1.

Install the tie-rod into rack.

Tightening torque:

110 N·m (11.2kgf-m, 81.1ft-lb)

Check the mating face of rack and tie-rod for foreign matter such as dust etc.

2.

Apply a coat of grease to the tie-rod groove, and then install the boot steering gearbox to the housing.

Assemble the small end of the boot steering gearbox in the tie-rod groove first, and then assemble the large end of the boot steering gearbox in the housing.

Make sure that the boot steering gearbox is installed without unusual inflation or deflation.

3.

Using the boot clamp pliers, crimp the boot so that the clearance (b) of the band boot (a) crimp portion becomes 2 mm (0.08in) or less.

Use a new band boot.

4.

Fix the end of the boot steering gearbox with clip boot tie-rod (a).

5.

After installation, check that the end of the boot steering gearbox is installed to the groove (b) of the tie-rod.

6.

If the tie-rod end has been removed, screw in lock nut and tie-rod end to the threaded portion of tie-rod, and tighten the lock nut temporarily in a position as shown in the figure.

Installed tie-rod length L:

23 mm (0.91in)

7.

Inspect the steering gearbox assembly as follows:

“A” Holding the tie-rod end, repeat lock to lock several times as quickly as possible.
“B” Holding the tie-rod end, turn it slowly at a radius several times as large as possible.
Finally, make sure that the boot steering gearbox is installed in the specified position without inflating.

8.

Remove the steering gearbox assembly from ST.

POWER ASSISTED SYSTEM (POWER STEERING) > Electric Power Steering Gearbox　

INSPECTION

1. UNIT INSPECTION

Check components for wear, damage or other faults. Adjust or replace if necessary.

2. LIMIT

Make a measurements as follows. If it exceeds the specified service limits, adjust or replace.

When fixing the steering gearbox assembly in a vise, apply a wooden piece on the flange portion.

Rack shaft sliding resistance:

Limit: 360 N (37 kgf, 81 lbf) or less

Difference between right and left sliding resistance: 20% or less

3. RACK SHAFT PLAY IN THE RADIAL DIRECTION

When fixing the steering gearbox assembly in a vise, apply a wooden piece on the flange portion.
When fixing the magnet stand in the steering gearbox assembly, perform the following procedure.
- Fix the iron plate on the flange portion using a c-clamp, and place the magnet stand on the iron plate.
- Use bolts and nuts to fix directly on the flange portion of the steering gearbox assembly. (Secure the gauge firmly on the gearbox body. (Avoid the input shaft and the rack shaft.))

Preparation tool:

Dial gauge

Magnet stand

Right-turn steering:

Service limit:

Both amplitudes: 0.6 mm (0.024in) or less

Left-turn steering:

Service limit:

Both amplitudes: 0.6 mm (0.024in) or less

Condition:

L: 5 mm (0.2in)

Rack shaft end P: 98 N (10 kgf, 22 lbf)

The location where the magnet stand is installed varies to stabilize the magnet stand.

4. INPUT SHAFT PLAY

When fixing the steering gearbox assembly in a vise, apply a wooden piece on the flange portion.
When fixing the magnet stand in the steering gearbox assembly, perform the following procedure.
- Fix the iron plate on the flange portion using a c-clamp, and place the magnet stand on the iron plate.
- Use bolts and nuts to fix directly on the flange portion of the steering gearbox assembly. (Secure the gauge firmly on the gearbox body. (Avoid the input shaft and the rack shaft.))

Preparation tool:

Dial gauge

Magnet stand

In radial direction:

Limit of both amplitudes: 0.6 mm (0.024in) or less

Condition: Input shaft tip P = 98 N (10 kgf, 22 lbf)

L: 5 mm (0.2in) from dust cover

In axial direction:

Service limit: 0.27 mm (0.0106in) or less

Condition: Input shaft tip P = 20 — 49 N (2 — 5 kgf, 4 — 11 lbf)

The location where the magnet stand is installed varies to stabilize the magnet stand.

(a)	Vise	(c)	C-clamp	(e)	Dust cover
(b)	Wooden block	(d)	Iron plate

5. ROTATIONAL RESISTANCE OF GEARBOX

Using the ST, measure the rotational resistance of the steering gearbox assembly.

Preparation tool:

ST: SPANNER (34099PA100)

Service limit:

Maximum allowable resistance: 20 N (2 kgf, 4.5 lbf) or less

Difference between right and left rotational resistance: 20% or less

6. BUSHING INSPECTION

Check the bushing for cracks. If there is any cracks, replace the steering gearbox assembly.

POWER ASSISTED SYSTEM (POWER STEERING) > Electric Power Steering Gearbox　

ADJUSTMENT

1. GEARBOX BACKLASH ADJUSTMENT

1.

Remove the steering gearbox assembly. POWER ASSISTED SYSTEM (POWER STEERING)>Electric Power Steering Gearbox>REMOVAL

2.

Loosen the lock nut and adjusting screw.

Preparation tool:

Lock nut: width across flat 38 mm (1.5in) available monkey wrench

Adjusting screw: 12.7 mm sq (0.5in sq) (drain plug socket, etc.)

3.

Apply a coat of grease to the sliding surface (B) of the pad pressure (a) and seating surface (C) of spring gearbox (b), and then insert the pad pressure (a) into steering body.

4.

Charge the adjusting screw (c) with grease (D), and then insert the spring gearbox (b) into adjusting screw. Then install on the steering body.

Preparation items:

Grease: Multemp AC-P

5.

Apply liquid gasket to 1/3 or more (A) of entire perimeter of adjusting screw thread (c).

Preparation items:

Liquid gasket: THREE BOND 1111B

6.

Tighten the adjusting screw to 35 N·m (3.6kgf-m, 25.8ft-lb), then loosen it.

7.

Tighten the adjusting screw to 6 N·m (0.6kgf-m, 4.4ft-lb).

8.

Loosen the adjusting screw by 20°.

9.

While fixing the adjusting screw, tighten the lock nuts.

Tightening torque:

45 N·m (4.6kgf-m, 33.2ft-lb)

2. FRONT WHEEL ALIGNMENT ADJUSTMENT

1.

Adjust the front toe-in. FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT > FRONT TOE-IN

2.

Check the steering angle of the wheels.

Standard of steering angle:

Inner wheel	38.4°±1.5°
Outer wheel	33.5°±1.5°

3.

When the steering wheel is in the following condition, perform the steering wheel installation over again.

When wheels are set in the straight ahead position, the steering wheel spokes are not horizontal.
Error is more than 5° on the periphery of the steering wheel.

(1)

Within 5°

4.

If the steering wheel spokes are not horizontal with vehicle set in the straight ahead position after this adjustment, correct it by turning the right and left tie-rods in the opposite direction from each other by the same angle. Also check that there are no abnormal steering effort, failure of the steering wheel to return or other faults.

5.

Perform the VDC sensor midpoint setting mode. VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)>ADJUSTMENT > VDC SENSOR MIDPOINT SETTING MODE

POWER ASSISTED SYSTEM (POWER STEERING) > Power Steering Control Module　

NOTE

Power steering control module is integrated with the electric power steering gearbox.

Since the power steering control module is a non-disassemble part, it cannot be removed.

POWER ASSISTED SYSTEM (POWER STEERING) > Power Steering Control Module　

INSPECTION

Power steering control module is integrated with the electric power steering gearbox.

Refer to “POWER STEERING (DIAGNOSTICS)” for inspection. POWER STEERING (DIAGNOSTICS)>Basic Diagnostic Procedure

POWER ASSISTED SYSTEM (POWER STEERING) > General Diagnostic Table　

INSPECTION

Trouble	Possible cause	Corrective action
Steering effort is heavy in all ranges. Steering effort is heavy at stand still. Steering wheel vibrates when turning.	1. Tire and wheel Improper tire out of specifications Improper wheel out of specification Tires not properly inflated	Replace the tire and wheel, or reinflate the tire.
	2. Measure the steering wheel effort. POWER ASSISTED SYSTEM (POWER STEERING)>General Diagnostic Table>INSPECTION > MEASUREMENT OF STEERING EFFORT	Adjust or replace the faulty parts.
Vehicle leads to one side or the other. Returning force of steering wheel to center is poor. Steering wheel vibrates when turning.	1. Tire and wheel Flat tire Mixed use of different tires Mixed use of different wheels Abnormal wear of tire Unequal tread remaining Unequal pressure of tire	Adjust, repair or replace the tire and wheel.
	2. Front wheel alignment Improper or unequal caster Improper or unequal toe-in Loose suspension connections	Adjust or retighten.
	3. Measure the steering wheel effort. POWER ASSISTED SYSTEM (POWER STEERING)>General Diagnostic Table>INSPECTION > MEASUREMENT OF STEERING EFFORT	Adjust or replace the faulty parts.

When performing repeated steering operation with the vehicle at standstill, the steering effort may be temporarily heavy because the heat generated in the system activates the power steering protection control. This is not a malfunction caused by the steering system. After a while, it will return to normal steering effort. (In this case, the steering warning light will not come on and there will be no DTC.)

1. NOISE AND VIBRATION

When turning the steering wheel with the brake applied when the vehicle is parked, a screeching noise may be generated by the brake disc and pads. This is not a fault in the steering system.
There may be a small vibration around the steering devices when turning the steering wheel at standstill, even though the component parts are operating properly.

Trouble	Possible cause	Corrective action
Rattling noise (intermittent) While engine is running.	Interference with adjacent parts	Check the clearance. Correct if necessary.
	Looseness of linkage, play of steering, improper tightening (looseness) of suspension joint or steering column	Retighten or replace.
	Noise emitted from inside of the gearbox	Replace the gearbox assembly.
Knocking When turning steering wheel in both directions with small angle repeatedly at engine ON or OFF.	Excessive backlash Loosened lock nut for adjusting backlash	Adjust the backlash. When the noise remains after adjustment, replace the gearbox assembly.
	Insufficient tightening or play in the tie-rod or tie-rod end	Retighten or replace.
Grinding noise (intermittent) While engine is running. (While operating the steering.)	Fault inside of gearbox	Replace the gearbox assembly.
	Faulty bearing of the column assembly steering	Apply grease or replace.
	Occurs when turning the steering wheel with brakes (service or parking) applied.	If the noise goes off when brake is released, it is normal.
Vibration While engine is running. (With/without steering turned)	Excessive play in steering, looseness of suspension parts	Retighten.

2. MEASUREMENT OF STEERING EFFORT

1. CHECK STEERING WARNING LIGHT.

Does the steering warning light illuminate?

Using Subaru Select Monitor, read the DTC and inspect according to it. POWER STEERING (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)

2

2. CHECK STEERING WARNING LIGHT.

1.

Using Subaru Select Monitor, display the data of [EPS operating condition]. POWER STEERING (DIAGNOSTICS)>Data Monitor

2.

Connect the Subaru Select Monitor, and turn the steering wheel. (One lock to lock)

Is the [EPS operating condition] normal without displaying any DTC code?

3

If the [EPS operating condition] is “Assist limitation”, stop the engine for approx. 30 minutes and perform the procedures from step 1 again.

3. CHECK STEERING EFFORT.

1.

Stop the vehicle on paved road.

2.

Set the tire air pressure to the specification.

3.

Start the engine.

4.

Run the engine at idle.

5.

Install a spring scale on the steering wheel.

6.

Pull the spring scale at a right angle to the steering wheel, and measure both right and left steering wheel efforts.

Is the steering effort less than 31 N (3.2 kgf, 7 lbf)?

4

8

4. CHECK STEERING EFFORT.

1.

Stop the engine.

2.

Pull the spring scale at a right angle to the steering wheel, and measure both right and left steering wheel efforts.

Is the steering effort less than 294.2 N (30 kgf, 66.2 lbf)?

5

Perform the inspection or adjustment around the suspension part.

5. CHECK TORQUE SENSOR OUTPUT VALUE.

1.

Display the data of [Torque sensor main output] and [Torque sensor sub output] using Subaru Select Monitor. POWER STEERING (DIAGNOSTICS)>Data Monitor

2.

Read the value of torque sensor.

When measuring, place the steering wheel at the center position.

Is the torque value ±0.75N·m (0.08kgf-m, 0.55ft-lb)?

6

Replace the gearbox assembly. POWER ASSISTED SYSTEM (POWER STEERING)>Electric Power Steering Gearbox

6. CHECK TORQUE SENSOR OUTPUT VALUE.

1.

Remove the universal joint assembly steering.

2.

Display the data of [Torque sensor main output] and [Torque sensor sub output] using Subaru Select Monitor. POWER STEERING (DIAGNOSTICS)>Data Monitor

3.

Read the value of torque sensor.

Is the torque value ±0.75N·m (0.08kgf-m, 0.55ft-lb)?

7

Replace the gearbox assembly. POWER ASSISTED SYSTEM (POWER STEERING)>Electric Power Steering Gearbox

7. CHECK TORQUE SENSOR OUTPUT VALUE.

1.

Remove the universal joint assembly steering.

Check that the universal joint assembly steering moves up and down smoothly without installing the bolt. Then tighten the bolts first on the gearbox side and then on the column shaft side.

2.

Display the data of [Torque sensor main output] and [Torque sensor sub output] using Subaru Select Monitor. POWER STEERING (DIAGNOSTICS)>Data Monitor

3.

Read the value of torque sensor.

Is the torque value ±0.75N·m (0.08kgf-m, 0.55ft-lb)?

8

Check the universal joint assembly steering. POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint>INSPECTION

8. CHECK STEERING WHEEL EFFORT.

1.

Remove the universal joint assembly steering.

2.

Measure the steering wheel effort.

Is the steering effort less than 2.26 N (0.23 kgf, 0.51 lbf)?

9

Replace the column assembly steering. POWER ASSISTED SYSTEM (POWER STEERING)>Steering Column

9. CHECK STEERING WHEEL EFFORT.

Measure the steering wheel effort.

Is the difference of steering effort between right and left less than 20%?

10

Replace the steering column. POWER ASSISTED SYSTEM (POWER STEERING)>Steering Column

10. CHECK UNIVERSAL JOINT ASSEMBLY STEERING.

Measure the swing torque of joint. (Yoke of steering column side) POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint>INSPECTION

Is the swing torque of the universal joint assembly steering 5.4 N (0.55 kgf, 1.21 lbf) or less?

11

Replace the universal joint assembly steering with a new part. POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint

11. CHECK UNIVERSAL JOINT ASSEMBLY STEERING.

Measure the swing torque of joint. (Yoke of gearbox side) POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint>INSPECTION

Is the swing torque of the universal joint assembly steering 4.5 N (0.46 kgf, 1.01 lbf) or less?

12

Replace the universal joint assembly steering with a new part. POWER ASSISTED SYSTEM (POWER STEERING)>Universal Joint

12. CHECK FRONT WHEEL.

Check the front wheels.

Does the front wheels have unsteady revolution or rattling, or does the brake drag?

Inspect, readjust and replace if necessary.

13

13. CHECK TIE-ROD AND TIE-ROD ENDS.

Remove the tie-rod and tie-rod ends.

Does the tie-rod and tie-rod end have unsteady revolution, swing or rattling?

Inspect and replace if necessary.

14

14. CHECK BALL JOINT.

Remove the ball joint.

Does the ball joints of suspension have unsteady revolution or rattling?

Inspect and replace if necessary.

15

15. CHECK GEARBOX.

Measure the rotating of gearbox. POWER ASSISTED SYSTEM (POWER STEERING)>Electric Power Steering Gearbox>INSPECTION > ROTATIONAL RESISTANCE OF GEARBOX

Is the rotational resistance of the steering gearbox 20 N (2 kgf, 4.5 lbf) or less? Is the difference between the right and left rotational resistances equal to or less than 20%?

16

Replace the gearbox assembly. POWER ASSISTED SYSTEM (POWER STEERING)>Electric Power Steering Gearbox

16. CHECK GEARBOX.

Measure the sliding of gearbox. POWER ASSISTED SYSTEM (POWER STEERING)>Electric Power Steering Gearbox>INSPECTION > LIMIT

Is the sliding resistance of the steering gearbox equal to or less than 360 N (36.7 kgf, 80.9 lbf)? Is the difference between right and left sliding resistances equal to or less than 20%?

Steering effort is normal.

Replace the gearbox assembly. POWER ASSISTED SYSTEM (POWER STEERING)>Electric Power Steering Gearbox

3. INSPECTION OF CLEARANCE

This table lists various clearances that must be correctly adjusted to ensure the normal vehicle driving without interfering noise, or any other faults.

Location	Minimum allowance mm (in)
(1) Torque sensor to Crossmember	5 (0.20)
(2) Worm wheel housing to Crossmember	There must be no contact
(3) Stub housing to Engine mount	10 (0.39)
(4) Universal joint column side yoke to Master cylinder (closest point of approach when the universal joint turns by 360°)	5 (0.20)
(5) Wheel housing to Exhaust pipe	13 (0.51)
(6) Motor ECM to Crossmember	There must be no contact