CHECK AT ECU TERMINAL


ETACS-ECU




note Terminal numbers 1 to 20 can not be measured as the ETACS-ECU is mounted on the junction block directly. The values are for reference only.
Terminal No.
 Check item
 Check condition
 Normal condition
1
 Output to the power window relay
 When the power windows are operative
 System voltage
2
 Power supply to the central door locking system (battery positive voltage)
 Always
 System voltage
3
 Earth (for ECU)
 Always
 0 V
4
 Ignition switch (ACC)
 Ignition switch: ACC
 System voltage
5
 Output to room lamp
 When the room lamp is on
 2 V or less
6
 Power supply to interior lamp (battery positive voltage)
 Always (when the interior lamp off function is off)
 System voltage
7
 Input from all the door switches
 One of the door switches: ON (door open)
 0 V
8
 Power supply from ignition switch (IG1)
 Ignition switch: ON
 System voltage
9
 Output to right turn-signal lamps
 When right turn-signal lamps are on
 System voltage
10
 Input from driver’s door switch
 Driver’s door switch: ON (door open)
 0 V
11
 Power supply to hazard warning lamp (battery positive voltage)
 Always
 System voltage
12
 Output to central door locking (for locking the doors)
 When the door lock actuators lock the doors
 System voltage
13
 Output to central door locking (for unlocking the doors other than the driver’s door)
 When the door lock actuators unlock the doors
 System voltage
14
 Output to left turn-signal lamps
 When the left turn-signal lamps are on
 System voltage
15
 -
 -
 -
16
 Output to rear wiper
 When rear wiper is operating
 System voltage
17
 Input of rear wiper automatic stop signal
 When rear wiper is operating
 System voltage
18
 Power supply from ignition switch (ACC)
 Ignition switch: ACC
 System voltage
19
 -
 -
 -
20
 Battery power supply (for ECU)
 Always
 System voltage
21
 Input from hood switch
 Hood switch ON (hood open)
 0 V
22
 Output to central door locking (for unlocking the driver’s door)
 When the door lock actuators unlock the doors
 System voltage
23
 Rear washer output
 When rear washer is operating
 System voltage
24
 Input from remote controlled mirror switch (fold switch)
 Remote controlled mirror switch (fold switch): ON
 0 V
25
 -
 -
 -
26
 Photo sensor (auto lamp) power supply
 Ignition switch: ON
 5 V
27
 Photo sensor (auto lamp) input
 Ignition switch: ON
Sensor probe illumination intensity: Dark to Bright
 0 to approximately 4 V
28
 Photo sensor (auto lamp) earth
 Always
 0 V
29
 -
 -
 -
30
 Input to key reminder switch
 Key reminder switch: ON (ignition key removed)
 0 V
31
 Output to electric retractable remote controlled mirror (unfold)
 When the door mirrors are folding

 System voltage
32
 -
 -
 -
33
 Central door lock switch input
 Central door lock switch: Locked
 0 V
34
 Input from central door unlock switch
 Central door unlock switch: Unlocked
 0 V
35
 Input to driver’s door lock actuator (lock switch)
 Driver’s door lock: Locked
 0 V
36
 Input to driver’s door lock actuator (unlock switch)
 Driver’s door lock: Unlocked
 0 V
37~39
 -
 -
 -
40
 Output to electric retractable remote controlled mirror (unfold)
 When the door mirrors are unfolding

 System voltage
41~43
 -
 -
 -
44
 Output to horn
 When alarm is triggered (horn is sounding)
 0 V
51
 Setting diagnosis code or sending input check signal
 When diagnosis code is set (the M.U.T.-III is connected or the diagnosis connector No.1 is earthed)
 0 to 12 V (pulse signal)
When input check signal is sent
 0 V, 12 V (input signal is fluctuating)
52
 Input from luggage room lamp switch
 Luggage room lamp switch: ON
 0 V
53
 Input from interior lamp off switch
 Interior lamp switch: OFF
 0 V
54
 Input from front fog lamp switch
 Front fog lamp switch: ON
 0 V
55
 Input from hazard warning lamp switch
 Hazard warning lamp switch: ON
 0 V
56
 Earth (for sensor)
 Always
 0 V
57, 58
 -
 -
 -
59
 SWS communication line
 Always
 0 to 12 V (pulse signal)
60, 61
 -
 -
 -
62
 Input to tailgate lock release handle
 Tailgate lock release handle: ON
 0 V
63
 Input from interior lamp on switch
 Interior lamp switch: ON
 0 V
64, 65
 -
 -
 -
66
 Input from windshield intermittent wiper volume
 Turn the ignition switch to the ACC position, and move the wiper volume from "Fast" to "Slow."
 0 to 2.5 V
67
 Input from diagnosis control
 When M.U.T.-III is connected
 0 V
68
 Input of SWS request signal
 Always
 0 to 12 V (pulse signal)
69
 Output to ignition key cylinder illumination lamp
 When ignition key cylinder illumination is on
 2 V or less
70
 -
 -
 -
71
 Power supply to interior lamp
 Always (when the interior lamp off function is off)
 System voltage
72, 73
 -
 -
 -
74
 Output to security indicator lamp
 When security indicator lamp is on
 2 V or less

Column switch




Terminal No.
 Check item
 Check condition
 Normal condition
1
 System voltage
 Always
 System voltage
2
 Input of SWS request signal
 Always
 0 to 12 V (pulse signal)
3
 SWS communication line
 Always
 0 to 12 V (pulse signal)
4
 Earth
 Always
 0 V
5
 -
 -
 -
6
 Output to windshield intermittent wiper volume
 Ignition switch: ACC
Move the wiper volume from "Fast" to "Slow."
 0 to 2.5 V
7
 -
 -
 -
8
 Back-up output to windshield wiper switch
 Windshield low-speed wiper switch or windshield high-speed wiper switch: ON
 0 V
9
 Power supply from ignition switch (IG1)
 Ignition switch: ON
 System voltage
10
 Back-up output to headlamp switch
 Headlamp switch: ON
 0 V

Front-ECU




note Measurement is not possible as the front-ECU is mounted on the relay box directly. The values are for reference only.
Terminal No.
 Check item
 Check condition
 Normal condition
1
 Output to front fog lamps
 When front fog lamps are on
 System voltage
2
 Output to high-beam headlamps
 When high-beam headlamps are on
 System voltage
3, 4
 Battery power supply (for headlamps)
 Always
 System voltage
5
 Battery power supply (for tail lights)
 Always
 Battery voltage
6
 Output to low-beam headlamps
 When low-beam headlamps are on
 Battery voltage
7
 Battery power supply (for ECU)
 Always
 System voltage
8
 Output to tail lamps
 When the tail lamps are on
 System voltage
9~11
 -
 -
 -
21
 Output to windshield washer
 When windshield washer is operating
 System voltage
22
 SWS communication line
 Always
 0 to 12 V (pulse signal)
23
 Input of windshield wiper automatic stop signal
 When windshield wipers are operating
 System voltage
24
 Power supply from ignition switch (ACC)
 Ignition switch: ACC
 System voltage
25
 Back-up input from headlamp switch
 Headlamp switch: ON
 0 V
26
 Back-up input from windshield wiper switch
 Windshield low-speed wiper switch or windshield high-speed wiper switch: ON
 0 V
27
 Output to windshield wiper (low speed operation)
 When windshield wipers are operating at low speed
 System voltage
28
 Output to windshield wiper (high speed operation)
 When windshield wipers are operating at high speed
 System voltage
29
 -
 -
 -
30
 Power supply to the ignition switch (IG2)
 Ignition switch: ON
 System voltage
31
 Earth
 Always
 0 V

Power window main switch




Terminal No.
 Check item
 Check condition
 Normal condition
1
 Output to power window motor
 -
 -
2
 Earth
 Always
 0 V
3
 -
 -
 -
4
 SWS communication line (to ETACS-ECU)
 Always
 0 to 12 V (pulse signal)
5
 -
 -
 -
6
 Power supply
 Power window relay: ON
 System voltage
7
 Output to power window motor
 -
 -
8
 Input from power window motor (pulse sensor earth)
 -
 0 V
9
 Input from power window motor (pulse sensor signal)
 When the power windows are operating
 0 to 5 V (pulse signal)
10
 Input from power window motor (pulse sensor signal)
 When the power windows are operating
 0 to 5 V (pulse signal)
11
 SWS communication line (power window sub switch)
 Power window relay: ON
 0 to 12 V (pulse signal)
12
 Input from power window motor (power supply to pulse sensor)
 When the power windows are operating
 5 V
13, 14
 -
 -
 -

Power window sub switch




Terminal No.
 Check item
 Check condition
 Normal condition
1
 Earth
 Always
 0 V
2
 Input from power window motor
 -
 -
3
 Input from power window motor
 -
 -
4
 Power supply
 Power window relay: ON
 System voltage
5
 Output to power window motor
 -
 -
6
 SWS communication line
 Power window relay: ON
 0 to 12 V (pulse signal)
7
 Output to power window motor
 -
 -
8
 Input from power window motor
 -
 -

Sunroof motor assembly




Terminal No.
 Check item
 Check condition
 Normal condition
1
 System voltage (for motor)
 Always
 System voltage
2
 Power supply from ignition switch (IG2)
 Ignition switch: ON
 System voltage
3, 4
 -
 -
 -
5
 Earth
 Always
 0 V
6
 Input from sunroof switch (close)
 Sunroof switch: Close
 0 V
7
 -
 -
 -
8
 Input from sunroof switch (open)
 Sunroof switch: Open
 0 V
9
 -
 -
 -
10
 SWS communication line (to ETACS-ECU)
 Always
 0 to 12 V (pulse signal)