CHECK AT ECU TERMINAL


ETACS-ECU




note 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.
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 position
 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 rear door switch (LH)
 Rear door switch (LH): ON [rear door (LH): open]
 0 V
8
 Power supply from ignition switch (IG1)
 Ignition switch: ON position
 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 (driver’s 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)
 When the door lock actuators unlock the doors
 System voltage
14
 Output to left turn-signal lamps
 When 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 position
 System voltage
19
 -
 -
 -
20
 Battery power supply (for ECU)
 Always
 System voltage
21
 Input from rear fog lamp switch
 Rear fog lamp switch: ON (rear fog lamp switch: push)
 0 V
22
 -
 -
 -
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, 27, 28, 29
 -
 -
 -
30
 Input from key reminder switch
 Key reminder switch: ON (ignition key: removed)
 0 V
31
 Output to electric retractable remote controlled mirror (fold)
 When the door mirrors are folding

 System voltage
32
 -
 -
 -
33
 Input from door lock key cylinder switch or central door lock switch (lock switch)
 All doors and tailgate: Locked
 0 V
34
 Input from door lock key cylinder switch or central door lock switch (unlock switch)
 All doors and tailgate: Unlocked
 0 V
35
 -
 -
 -
36
 Input from driver’s door lock actuator (unlock switch)
 Driver’s door lock: Unlocked
 0 V
37
 Input from back door switch
 Back door switch: ON (back door: open)
 0 V
38
 -
 -
 -
39
 Input from back-up lamp switch <M/T> or inhibitor switch <A/T>
 Sift lever <M/T> or selector lever <A/T>: R position
Ignition switch: ON position
 System voltage
40
 Output to electric retractable remote controlled mirror (unfold)
 When the door mirrors are unfolding

 System voltage
41, 42, 43, 44
 -
 -
 -
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
 -
 -
 -
53
 Input from interior lamp off switch
 Interior lamp switch: OFF position
 0 V
54
 Input from front fog lamp switch
 Front fog lamp switch: ON (front fog lamp switch: push)
 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
 Earth (for ECU)
 Always
 0 V
59
 SWS communication line
 Always
 0 to 12 V (pulse signal)
60
 Power supply to automatic air conditioner control (A/C-ECU) illumination and radio illumination (battery positive voltage)
 Always
 System voltage
61, 62
 -
 -
 -
63
 Input from interior lamp on switch
 Interior lamp switch: ON position
 0 V
64
 Earth (for daytime running lamp function)
 Always
 0 V
65
 Input from front passenger’s door switch
 Front passenger’s door switch: ON (front passenger’s door: open)
 0 V
66
 Input from windshield intermittent wiper volume
 Turn the ignition switch to the ACC or ON 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
 Output of SWS request signal
 Always
 0 to 12 V (pulse signal)
69
 -
 -
 -
70
 Input from rear door switch (RH)
 Rear door switch (RH): ON [rear door (RH): open]
 0 V
71
 Power supply to interior lamp
 Always (when the interior lamp off function is off)
 System voltage
72, 73
 -
 -
 -
74
 Output to rear fog lamp
 When rear fog lamp is on
 System voltage

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
 Turn the ignition switch to the ACC or ON position, and 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 position
 System voltage
10
 Back-up output to headlamp switch
 Headlamp switch: ON position
 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, 5
 Battery power supply (for headlamps and tail lamps)
 Always
 System voltage
6
 Output to low-beam headlamps
 When low-beam headlamps are on
 System voltage
7
 Battery power supply (for ECU)
 Always
 System voltage
8
 Output to tail lamps
 When the tail lamps are on
 System voltage
9
 Battery power supply (for headlamp washer)
 Always
 System voltage
10
 -
 -
 -
11
 Output to headlamp washer
 When headlamp washer is operating
 System voltage
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 position
 System voltage
25
 Back-up input from headlamp switch
 Headlamp switch: ON position
 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 position
 System voltage
31
 Earth
 Always
 0 V