ENGINE (DIAGNOSTICS)(H4DO) > Engine Control Module (ECM) I/O Signal
Description |
Connector No. |
Terminal No. |
Signal (V) |
Reference | ||
Ignition SW ON (engine OFF) |
Engine ON (idling) | |||||
Crankshaft position sensor |
Signal (+) |
B137 |
29 |
0 |
−7 — +7 |
Waveform |
Signal (−) |
B137 |
30 |
0 |
0 |
— | |
Shield |
B137 |
21 |
0 |
0 |
— | |
Rear oxygen sensor |
Signal |
B136 |
21 |
0 |
0 — 0.9 |
— |
Shield |
B136 |
22 |
0 |
0 |
— | |
GND (sensor) |
B137 |
31 |
0 |
0 |
— | |
Front oxygen (A/F) sensor heater |
Signal 1 |
B134 |
2 |
0 — 1.0 |
— |
Waveform |
Signal 2 |
B134 |
1 | ||||
Signal 3 |
B134 |
9 | ||||
Signal 4 |
B134 |
10 | ||||
Rear oxygen sensor heater signal |
B135 |
7 |
0 — 1.0 |
— |
Waveform | |
Engine coolant temperature sensor |
Signal |
B137 |
11 |
1.0 — 1.4 |
1.0 — 1.4 |
After engine is warmed-up. |
GND (sensor) |
B137 |
31 |
0 |
0 |
After engine is warmed-up. | |
Vehicle speed signal |
B136 |
10 |
0 or 5 |
0 or 5 |
“5” and “0” are repeatedly displayed when vehicle is driven. | |
Air flow sensor |
Signal |
B136 |
31 |
— |
0.3 — 4.5 |
— |
Shield |
B136 |
24 |
0 |
0 |
— | |
GND |
B136 |
32 |
0 |
0 |
— | |
Intake air temperature sensor signal |
B136 |
9 |
0.3 — 4.6 |
0.3 — 4.6 |
— | |
Starter switch |
B135 |
21 |
0 |
0 |
Cranking: 8 — 14 | |
Starter relay |
B135 |
32 |
ON: 0 OFF: 10 — 13 |
ON: 0 OFF: 12 — 14 |
— | |
A/C switch |
B136 |
26 |
ON: 10 — 13 OFF: 0 |
ON: 12 — 14 OFF: 0 |
— | |
Ignition switch |
B135 |
10 |
10 — 13 |
12 — 14 |
— | |
Neutral position switch |
B135 |
9 |
ON: 0 OFF: 10 — 13 |
ON: 0 OFF: 12 — 14 |
— | |
Test mode connector |
B135 |
22 |
10 — 13 |
12 — 14 |
When connected: 0 | |
Knock sensor |
Signal |
B137 |
17 |
2.8 |
2.8 |
— |
Shield |
B137 |
16 |
0 |
0 |
— | |
Back-up power supply |
B136 |
5 |
10 — 13 |
12 — 14 |
Ignition switch “OFF”: 10 — 13 | |
Control module power supply |
B136 |
3 |
10 — 13 |
12 — 14 |
— | |
B136 |
4 |
10 — 13 |
12 — 14 |
— | ||
Sensor power supply |
B137 |
25 |
5.12 |
5.12 |
— | |
Ignition control |
#1 |
B134 |
25 |
0 |
12 — 14 |
Waveform |
#2 |
B134 |
24 |
0 |
12 — 14 |
Waveform | |
#3 |
B134 |
23 |
0 |
12 — 14 |
Waveform | |
#4 |
B134 |
22 |
0 |
12 — 14 |
Waveform | |
Fuel Injector |
#1 |
B134 |
17 |
10 — 13 |
1 — 14 |
Waveform |
#2 |
B134 |
16 |
10 — 13 |
1 — 14 |
Waveform | |
#3 |
B134 |
27 |
10 — 13 |
1 — 14 |
Waveform | |
#4 |
B134 |
26 |
10 — 13 |
1 — 14 |
Waveform | |
Fuel pump relay control |
B136 |
11 |
ON: 0.5 or less OFF: 10 — 13 |
0.5 or less |
— | |
A/C relay control |
B135 |
24 |
ON: 0.5 or less OFF: 10 — 13 |
ON: 0.5 or less OFF: 12 — 14 |
— | |
Radiator fan relay 1 control |
B135 |
19 |
ON: 0.5 or less OFF: 10 — 13 |
ON: 0.5 or less OFF: 12 — 14 |
— | |
Radiator fan relay 2 control |
B135 |
27 |
ON: 0.5 or less OFF: 10 — 13 |
ON: 0.5 or less OFF: 12 — 14 |
Model with A/C only | |
Wiper switch signal |
B136 |
35 |
ON: 0 OFF: 10 — 13 |
ON: 0 OFF: 12 — 14 |
— | |
AT/MT identification signal |
B135 |
28 |
0 |
0 |
MT model only | |
Steering wheel switch signal |
B136 |
33 |
0 |
0 |
RHD model only | |
Malfunction indicator light |
B135 |
16 |
— |
— |
Light “ON”: 1 or less Light “OFF”: 10 — 14 | |
Engine speed output |
B135 |
25 |
— |
0 — 13 or more |
Waveform | |
Purge control solenoid valve |
B134 |
8 |
ON: 1 or less OFF: 10 — 13 |
ON: 1 or less OFF: 12 — 14 |
Waveform | |
EGR solenoid valve |
Signal A+ |
B134 |
15 |
0 or 10 — 13 |
0 or 12 — 14 |
— |
Signal A− |
B134 |
14 |
0 or 10 — 13 |
0 or 12 — 14 |
— | |
Signal B+ |
B134 |
13 |
0 or 10 — 13 |
0 or 12 — 14 |
— | |
Signal B− |
B134 |
12 |
0 or 10 — 13 |
0 or 12 — 14 |
— | |
Manifold absolute pressure sensor |
Signal |
B137 |
15 |
3.8 — 4.4 |
1.2 — 2.5 |
— |
Power supply |
B137 |
25 |
5.12 |
5.12 | ||
GND (sensor) |
B137 |
31 |
0 |
0 | ||
Small light switch |
B136 |
16 |
ON: 0 OFF: 10 — 13 |
ON: 0 OFF: 12 — 14 |
— | |
Blower fan switch |
B135 |
8 |
ON: 0 OFF: 10 — 13 |
ON: 0 OFF: 12 — 14 |
— | |
A/C middle pressure switch |
B136 |
15 |
ON: 0 OFF: 4.5 — 5.5 |
ON: 0 OFF: 4.5 — 5.5 |
— | |
Rear defogger switch |
B136 |
27 |
ON: 0 OFF: 10 — 13 |
ON: 0 OFF: 12 — 14 |
— | |
Power steering oil pressure switch |
B134 |
30 |
10 — 13 |
ON: 0 OFF: 12 — 14 |
— | |
Front oxygen (A/F) sensor signal (+) |
B134 |
18 |
1.2 — 3.2 |
1.2 — 3.2 |
— | |
Front oxygen (A/F) sensor signal (−) |
B134 |
28 |
1.2 — 2.7 |
1.2 — 2.7 |
— | |
Front oxygen (A/F) sensor shield |
B134 |
29 |
0 |
0 |
— | |
SSM/GST communication line |
B135 |
30 |
1 ← → 4 |
1 ← → 4 |
— | |
GND (injector) |
B134 |
7 |
0 |
0 |
— | |
GND (power supply) |
B134 |
6 |
0 |
0 |
— | |
B137 |
1 |
0 |
0 |
— | ||
GND (control system) |
B135 |
3 |
0 |
0 |
— | |
B135 |
4 |
0 |
0 |
— | ||
GND (front oxygen (A/F) sensor heater 1) |
B134 |
3 |
0 |
0 |
— | |
GND (front oxygen (A/F) sensor heater 2) |
B134 |
4 |
0 |
0 |
— | |
GND (front oxygen (A/F) sensor heater 3) |
B134 |
5 |
0 |
0 |
— | |
Camshaft position sensor (LH) |
B137 |
13 |
0 — 0.9 |
ON: 0 OFF: 4.7 — 5.3 |
Waveform | |
Camshaft position sensor (RH) |
B137 |
12 |
0 — 0.9 |
ON: 0 OFF: 4.7 — 5.3 |
Waveform | |
Fuel level sensor |
B136 |
19 |
0.12 — 4.75 |
0.12 — 4.75 |
— | |
Electronic throttle control |
Main |
B137 |
23 |
0.4 — 0.7 Fully open: 4.0 — 4.7 |
0.4 — 0.7 (After engine is warmed-up.) |
— |
Sub |
B137 |
24 |
4.2 — 4.8 Fully open: 0.1 — 0.3 |
4.2 — 4.8 (After engine is warmed-up.) |
— | |
Power supply |
B137 |
25 |
5.12 |
5.12 |
— | |
GND (sensor) |
B137 |
31 |
0 |
0 |
— | |
Electronic throttle control motor 1 (+) |
B137 |
2 |
Duty waveform |
Duty waveform |
Drive frequency: 500 Hz | |
Electronic throttle control motor 2 (+) |
B137 |
3 |
Duty waveform |
Duty waveform |
Drive frequency: 500 Hz | |
Electronic throttle control motor 1 (−) |
B137 |
4 |
Duty waveform |
Duty waveform |
Drive frequency: 500 Hz | |
Electronic throttle control motor 2 (−) |
B137 |
5 |
Duty waveform |
Duty waveform |
Drive frequency: 500 Hz | |
Electronic throttle control motor power supply 1 |
B136 |
1 |
10 — 13 |
12 — 14 |
— | |
Electronic throttle control motor power supply 2 |
B136 |
2 |
10 — 13 |
12 — 14 |
— | |
GND (electric throttle control motor 1) |
B137 |
6 |
0 |
0 |
— | |
GND (electric throttle control motor 2) |
B137 |
7 |
0 |
0 |
— | |
Electronic throttle control motor relay |
B135 |
6 |
0 |
0 |
Ignition switch “ON”: ON | |
Oil flow control solenoid (LH) |
Signal |
B134 |
34 |
Duty waveform |
Duty waveform |
— |
Oil flow control solenoid (RH) |
Signal |
B134 |
33 |
Duty waveform |
Duty waveform |
— |
Acceleration pedal position sensor |
Main sensor signal |
B136 |
28 |
Fully closed: 0.4 — 1.0 Fully open: 2.4 — 3.7 |
Fully closed: 0.4 — 1.0 Fully open: 2.4 — 3.7 |
— |
Main power supply |
B136 |
17 |
5 |
5 |
— | |
GND (main sensor) |
B136 |
18 |
0 |
0 |
— | |
Shield |
B136 |
30 |
0 |
0 |
— | |
Sub sensor signal |
B136 |
29 |
Fully closed: 0.3 — 1.1 Fully open: 2.3 — 3.8 |
Fully closed: 0.3 — 1.1 Fully open: 2.3 — 3.8 |
— | |
Sub power supply |
B137 |
25 |
5 |
5 |
— | |
GND (sub sensor) |
B137 |
31 |
0 |
0 |
— | |
Cruise control main light |
B135 |
13 |
ON: 0 OFF: 10 — 13 |
ON: 0 OFF: 12 — 14 |
— | |
Cruise control set light |
B135 |
14 |
ON: 0 OFF: 10 — 13 |
ON: 0 OFF: 12 — 14 |
— | |
Clutch switch |
B136 |
34 |
When clutch pedal is depressed: 0 When clutch pedal is released: 10 — 13 |
When clutch pedal is depressed: 0 When clutch pedal is released: 12 — 14 |
— | |
Brake switch 1 |
B136 |
12 |
When brake pedal is depressed: 0 When brake pedal is released: 10 — 13 |
When brake pedal is depressed: 0 When brake pedal is released: 12 — 14 |
— | |
Brake switch 2 |
B136 |
13 |
When brake pedal is depressed: 10 — 13 When brake pedal is released: 0 |
When brake pedal is depressed: 12 — 14 When brake pedal is released: 0 |
— | |
Main switch |
B136 |
14 |
ON: 0 OFF: 5.12 |
ON: 0 OFF: 5.12 |
— | |
CAN communication |
Signal (+) |
B135 |
1 |
Pulse signal |
— | |
Signal (−) |
B135 |
2 |
Pulse signal |
— | ||
immobilizer input/output 1 |
B135 |
23 |
1 or less ←→ 4 or more |
1 or less ←→ 4 or more |
— | |
immobilizer input/output 2 |
B135 |
31 |
1 or less ←→ 4 or more |
1 or less ←→ 4 or more |
— | |
generator control |
B135 |
17 |
0 — 6.5 |
0 — 6.5 |
— | |
Cruise control command switch |
B136 |
23 |
When operating nothing: 3.5 — 4.5 When operating RES/ACC: 2.5 — 3.5 When operating SET/COAST: 0.5 — 1.5 When operating CANCEL: 0 — 0.5 |
When operating nothing: 3.5 — 4.5 When operating RES/ACC: 2.5 — 3.5 When operating SET/COAST: 0.5 — 1.5 When operating CANCEL: 0 — 0.5 |
— | |
Secondary air pipe pressure sensor |
Signal |
B136 |
7 |
2.2 — 2.7 |
2.2 — 2.7 |
When secondary air is inducted: 3.4 — 4.1 |
Power supply |
B137 |
25 |
5.12 |
5.12 |
— | |
GND (sensor) |
B137 |
31 |
0 |
0 | ||
Secondary air combination valve relay |
B135 |
34 |
ON: 0 OFF: 10 — 13 |
ON: 0 OFF: 10 — 14 |
— | |
Secondary air pump relay |
B135 |
5 |
ON: 0 OFF: 10 — 13 |
ON: 0 OFF: 12 — 14 |
— | |
Self shut-off relay |
B135 |
15 |
0 |
0 |
— |