Electrical Specification
WARNING: This page is about a different car, the 2005 Subaru Outback and 2005 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE CONTROL MODULE (ECM) CONNECTOR TERMINALS SIGNAL
| DESCRIPTION | Connector No. | Terminal No. | Signal (V) | NOTE | ||
|---|---|---|---|---|---|---|
| Ignition SW ON (engine OFF) | Engine ON (idling) | |||||
| Crankshaft position sensor | Signal (+) | B135 | 10 | 0 | -7 - +7 | Waveform |
| Signal (-) | B135 | 22 | 0 | 0 | - | |
| Shield | B135 | 31 | 0 | 0 | - | |
| Camshaft position sensor | Signal (+) | B135 | 11 | 0 | -7 - +7 | Waveform |
| Signal (-) | B135 | 23 | 0 | 0 | - | |
| Shield | B135 | 31 | 0 | 0 | - | |
| Electronic throttle control | Main | B136 | 18 | 0.64 - 0.72 Fully opens: 3.96 | 0.64 - 0.72 (After engine is warmed-up.) | Fully closed: 0.6 Fully open: 3.96 |
| Sub | B136 | 29 | 1.51 -1.58 Fully opens: 4.17 | 1.51 -1.58 (After engine is warmed-up.) | Fully closed: 1.48 Fully open: 4.17 |
|
| Electronic throttle control motor (+) | B137 | 5 | Duty waveform | Duty waveform | Drive frequency: 500 Hz | |
| Electronic throttle control motor (-) | B137 | 4 | Duty waveform | Duty waveform | Drive frequency: 500 Hz | |
| Electronic throttle control motor power supply | B137 | 6 | 10 - 13 | 13 - 14 | - | |
| Electronic throttle control motor relay | B135 | 35 | ON:0 OFF: 10 - 13 |
ON:0 OFF: 13-14 | When ignition switch is turned to ON: ON | |
| Accelerator position sensor | Main | B136 | 17 | Fully closed: 1 Fully opens: 3.3 |
Fully closed: 1 Fully opens: 3.3 |
- |
| Power supply | B136 | 15 | 5 | 5 | - | |
| Ground | B136 | 34 | 0 | 0 | - | |
| Sub | B136 | 28 | Fully closed: 1 Fully opens: 3.3 |
Fully closed: 1 Fully opens: 3.3 |
- | |
| Rear oxygen sensor | Signal | B137 | 24 | 0 | 0 - 0.9 | - |
| Shield | B137 | 31 | 0 | 0 | - | |
| Front oxygen (A/F) sensor heater | Signal 1 | B134 | 3 | 0 - 1.0 | 0 or 13 - 14 | Duty waveform |
| Signal 2 | B134 | 2 | 0-1.0 | 0 or 13-14 | Duty waveform | |
| Rear oxygen sensor heater signal | B135 | 2 | 0-1.0 | 0 or 13-14 | Duty waveform | |
| Engine coolant temperature sensor | B136 | 14 | 1.0-1.4 | 1.0 - 1.4 | After engine is warmed-up. | |
| Starter switch | B137 | 8 | 0 | 0 | Cranking: 8 - 14 | |
| Starter relay | B135 | 32 | ON:0 OFF: 10-13 |
ON:0 OFF: 13-14 |
- | |
| A/C switch | B137 | 16 | ON: 10-13 OFF:0 | ON: 13 - 14 OFF:0 | - | |
| Ignition switch | B137 | 15 | 10-13 | 13-14 | - | |
| Neutral position switch | AT | B137 | 9 | ON:0 OFF: 12+/-0.5 |
Switch is ON when select or shift lever is shifted into "P" or "N" range. (AT model) | |
| MT | ON: 12+/-0.5 OFF:0 |
Switch is ON when shift lever is shifted into "N" range. (MT model) | ||||
| Test mode connector | B137 | 14 | 5 | 5 | When connected: 0 | |
| Knock sensor | Signal | B136 | 25 | 2.8 | 2.8 | - |
| Shield | B136 | 33 | 0 | 0 | - | |
| Back-up power supply | B135 | 19 | 10-13 | 13-14 | Ignition switch "OFF": 10 - 13 | |
| Control module power supply | B135 | 6 | 10 - 13 | 13 - 14 | - | |
| B135 | 5 | 10 - 13 | 13 - 14 | - | ||
| Sensor power supply | B136 | 16 | 5 | 5 | - | |
| Ignition control | 1 | B135 | 18 | 0 | 1-3.4 | Waveform |
| 2 | B135 | 17 | 0 | 1-3.4 | Waveform | |
| Fuel injector | #1 | B136 | 6 | 10-13 | 1 -14 | Waveform |
| #2 | B136 | 5 | 10 - 13 | 1 -14 | Waveform | |
| #3 | B136 | 4 | 10-13 | 1 -14 | Waveform | |
| #4 | B136 | 3 | 10-13 | 1 -14 | Waveform | |
| Fuel pump relay control | B135 | 26 | ON: 0.5 or less OFF: 10-13 | 0.5 or less | - | |
| A/C relay control | B135 | 33 | ON: 0.5 or less OFF: 10-13 | ON: 0.5 or less OFF: 13-14 | - | |
| Radiator fan relay 1 control | B134 | 31 | ON: 0.5 or less OFF: 10-13 | ON: 0.5 or less OFF: 13-14 | - | |
| Radiator fan relay 2 control | B135 | 34 | ON: 0.5 or less OFF: 10-13 | ON: 0.5 or less OFF: 13-14 | - | |
| Self-shutoff control | B137 | 17 | 0.5 or less | 0.5 or less | - | |
| Malfunction indicator light | B134 | 17 | - | - | Light "ON": 1 or less Light "OFF": 10 - 14 |
|
| Engine speed output | B134 | 23 | - | 0 - 13 or more | Waveform | |
| Purge control solenoid valve | B134 | 14 | ON: 1 or less OFF: 10-13 |
ON: 1 or less OFF: 13-14 |
Duty waveform | |
| EGR solenoid valve | Signal A+ | B134 | 11 | 0 or 10 -13 | 0 or 10-13 | Waveform |
| Signal A- | B134 | 10 | 0 or 10-13 | 0 or 10-13 | Waveform | |
| Signal B+ | B134 | 9 | 0 or 10-13 | 0 or 10 -13 | Waveform | |
| Signal B- | B134 | 8 | 0 or 10-13 | 0 or 10 -13 | Waveform | |
| Power steering switch | B137 | 10 | ON: 1 or less OFF: 10-13 |
ON: 1 or less OFF: 13-14 |
- | |
| Blower fan switch | B137 | 13 | ON:0 OFF: 10-13 |
ON:0 OFF: 13 - 14 |
- | |
| A/C middle pressure switch | B136 | 30 | ON:0 OFF: 10-13 |
ON:0 OFF: 13-14 |
- | |
| Front oxygen (A/F) sensor signal 1 | B134 | 33 | - | 2.6 - 3.0 | - | |
| Front oxygen (A/F) sensor signal 2 | B134 | 26 | - | 2.2 - 2.6 | - | |
| Front oxygen (A/F) sensor shield | B134 | 25 | 0 | 0 | - | |
| Manifold absolute pressure sensor | B136 | 22 | 4.0 - 4.8 | 1.1 -1.9 | - | |
| Air flow sensor | Signal | B136 | 23 | - | 0.3 - 4.5 | - |
| Shield | B136 | 32 | 0 | 0 | - | |
| Ground | B136 | 31 | 0 | 0 | - | |
| Intake air temperature sensor | B136 | 13 | 3.15 - 3.33 | 3.15 - 3.33 | intake air temperature: 25°C (75°F) | |
| SSM communication line | B137 | 20 | Less than 1 <-- --> More than 4 | Less than 1 <-- --> More than 4 | - | |
| GND (sensor) | B136 | 35 | 0 | 0 | - | |
| GND (injector) | B137 | 7 | 0 | 0 | - | |
| GND (ignition system) | B135 | 12 | 0 | 0 | - | |
| GND (power supply) | B135 | 4 | 0 | 0 | - | |
| B135 | 1 | 0 | 0 | - | ||
| GND (control system) | B137 | 2 | 0 | 0 | - | |
| B137 | 1 | 0 | 0 | - | ||
| GND (Front oxygen (A/F) sensor heater 1) | B134 | 7 | 0 | 0 | - | |
| GND (Front oxygen (A/F) sensor heater 2) | B134 | 6 | 0 | 0 | - | |
| GND (Electronic throttle control) | B137 | 3 | 0 | 0 | - | |
| Main switch | B136 | 7 | ON:0 OFF: 5 |
ON:0 OFF: 5 |
- | |
| Clutch switch | B136 | 10 | When clutch pedal is depressed: 0 When clutch pedal is released: 10 -13 |
When clutch pedal is depressed: 0 When clutch pedal is released: 13 -14 |
- | |
| Brake switch 1 | B136 | 9 | When brake pedal is depressed: 0 When brake pedal is released: 10 - 13 |
When brake pedal is depressed: 0 When brake pedal is released: 13 -14 |
- | |
| Brake switch 2 | B136 | 8 | When brake pedal is depressed: 10 -13 When brake pedal is released: 0 |
When brake pedal is depressed: 13 -14 When brake pedal is released: 0 |
- | |
| Cruise control command switch | B136 | 11 | When operating nothing: 3.5 - 4.5 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 |
- | |
| Fuel temperature sensor | B136 | 12 | 2.5 - 3.8 | 2.5 - 3.8 | Ambient temperature: 25°C (75°F) | |
| Fuel tank pressure sensor | B136 | 21 | 2.3 - 2.7 | 2.3 - 2.7 | Value after removing fuel filler cap and installing again | |
| Fuel tank sensor control valve | B134 | 24 | ON: 1 or less OFF: 10-13 | ON: 1 or less OFF: 13-14 | - | |
| Pressure control solenoid valve | B134 | 12 | ON: 1 or less OFF: 10-13 | ON: 1 or less OFF: 13-14 | -- | |
| Drain valve | B134 | 13 | ON: 1 or less OFF: 10-13 | ON: 1 or less OFF: 13-14 | - | |
| CAN communication line (+) | B137 | 18 | 2.5 - 3.5 | 2.5 - 3.5 | Waveform | |
| CAN communication line (-) | B137 | 26 | 1.5 - 2.5 | 1.5 - 2.5 | Waveform | |
| AT/MT identification switch | B137 | 22 | 0 | 0 | MT model | |