CHECK AT ECU TERMINAL



ETACS-ECU




note B-234 (terminal numbers 1 to 20) cannot be measured as the ETACS-ECU is mounted on the junction block directly. The values are for reference only.

CONNECTOR: B-234
Terminal No.
Check item
Check condition
Normal condition
1
Power supply to the central door locking system (battery positive voltage)
Always
System voltage
2
Earth (for ECU)
Always
1 V or less
3
Output to left turn-signal lamps
When the left turn-signal lamps are on
System voltage
4
Output to right turn-signal lamps
When right turn-signal lamps are on
System voltage
5
Power supply to hazard warning lamp (battery positive voltage)
Always
System voltage
6
Input of windshield wiper automatic stop signal
When windshield wipers are operating
System voltage
7
Output to windshield wiper (high-speed operation)
When windshield wipers are operating at high speed
System voltage
8
Output to windshield wiper (low speed operation)
When windshield wipers are operating at low speed
System voltage
9
Output to windshield washer
When windshield washer is operating
System voltage
10
Power supply to windshield wiper/washer (ignition switch: ACC)
Ignition switch: ACC
System voltage
11
Power supply to rear wiper/washer (ignition switch: ACC)
Ignition switch: ACC
System voltage
12
Output to rear washer
When rear washer is operating
System voltage
13
Output to rear wiper
When rear wiper is operating
System voltage
14
-
-
-
15
Output to tail lamps
When the tail lamps are on
System voltage
16
Battery power supply (for tail lamps)
Always
System voltage
17
Output to low-beam headlamps
When low-beam headlamps are on
1 V or less
18
Output to room lamp
When the room lamp is on
Pulse signal
19
Output to high-beam headlamps
When high-beam headlamps are on
1 V or less
20
Battery power supply (for ECU)
Always
System voltage

CONNECTOR: B-232
Terminal No.
Check item
Check condition
Normal condition
21
-
-
-
22
Output to central door locking (for unlocking the doors)
When the door lock actuators unlock the doors
System voltage
23
Output to central door locking (for locking the doors)
When the door lock actuators lock the doors
System voltage
24
Input from blower motor switch
Blower motor switch: ON
System voltage
25, 26
-
-
-
27
Input to driver’s door lock actuator (lock switch)
Driver’s door lock: Locked
1 V or less
28 - 30
-
-
-
31
Output to the dead lock relay
When the dead lock system is operative
System voltage
32
Output to the power window relay
When the power windows are operative
System voltage
33
Output to rear fog lamps
When front fog lamps are on
1 V or less
34 - 36
-
-
-
37
Power window-ECU communication line
Always
0 to 12 V (pulse signal)
38 - 40
-
-
-
41
Input to driver’s door lock actuator (unlock switch)
Driver’s door lock: Unlocked
1 V or less
42 - 44
-
-
-

CONNECTOR: B-233
Terminal No.
Check item
Check condition
Normal condition
51
Input from driver’s door switch
Driver’s door switch: ON (door open)
1 V or less
52
Power supply from ignition switch (IG1)
Ignition switch: ON
System voltage
53
Input to key reminder switch
Key reminder switch: ON (ignition key removed)
1 V or less
54
LIN communication line
Always
0 to 12 V (pulse signal)
55 - 57
-
-
-
58
Input from front fog lamp switch
Front fog lamp switch: ON
1 V or less
59
Ignition switch (ACC)
Ignition switch: ACC
System voltage
60
-
-
-
61
Input from all the door switches (excluding driver’s door)
One of the door switches (excluding driver’s door): ON (door open)
1 V or less
62, 63
-
-
-
64
Back-up input from windshield wiper switch
Windshield low-speed wiper switch or windshield high-speed wiper switch: ON
1 V or less
65
-
-
-
66
Output to fan motor relay (HI)
When fan motor (HI) are on
1 V or less
67
Output to front fog lamps
When rear fog lamps are on
1 V or less
68
-
-
-
69
Input from rear fog lamp switch
Rear fog lamp switch: ON
1 V or less
70
Earth (for sensor)
Always
1 V or less
71
Input from hazard warning lamp switch
Hazard warning lamp switch: ON
1 V or less
72
Output to fan motor relay (LO)
When fan motor (LO) are on
1 V or less
73, 74
-
-
-

COLUMN SWITCH





CONNECTOR: B-238
Terminal No.
Check item
Check condition
Normal condition
1
System voltage
Always
System voltage
2
-
-
-
3
LIN communication line
Always
0 to 12 V (pulse signal)
4
Earth
Always
1 V or less
5 - 7
-
-
-
8
Back-up output to windshield wiper switch
Windshield low-speed wiper switch or windshield high-speed wiper switch: ON
1 V or less
9
Power supply from ignition switch (IG1)
Ignition switch: ON
System voltage
10
Back-up output to headlamp switch
Headlamp switch: ON
1 V or less

RAIN LIGHT SENSOR





CONNECTOR: C-39
Terminal No.
Check item
Check condition
Normal condition
1
System voltage
Always
System voltage
2
LIN communication line
Always
0 to 12 V (pulse signal)
3
Earth
Always
1 V or less