2. ECM Terminal Function
ECM TERMINAL REFERENCE CHART
| Pin No. | Description | Connected to | Remark |
|---|---|---|---|
| 1 | ECM ground | Chassis ground | |
| 2 | Power stage ground | Chassis ground | |
| 3 | Direct battery voltage supply | Battery | |
| 4 | Ignition coil output 1, 4 | Ignition Coil #1, 4 | |
| 5 | Ignition coil output 2, 3 | Ignition Coil #2, 3 | |
| 6 | CAN LOW | Other control modules (TCM, ABS, etc.) | |
| 7 | CAN HIGH | Other control modules (TCM, ABS, etc.) | |
| 8 | HO2S Heater (B1/S1) | HO2S (B1/S1) | |
| 9 | HO2S Heater (B1/S2) | HO2S (B1/S2) | |
| 10 | Knock Sensor Input | Knock Sensor | |
| 11 | CVVT Oil Control Valve output | CVVT Oil Control Valve | |
| 12 | Not connected | - | |
| 13 | Not connected | - | |
| 14 | Battery Voltage Supply after Main Relay | Main Relay | |
| 15 | Not connected | - | |
| 16 | Not connected | - | |
| 17 | Wheel Speed Sensor (-) | Wheel Speed Sensor | |
| 18 | Wheel Speed Sensor (+) | Wheel Speed Sensor | |
| 19 | Linear Lambda VG | HO2S (B1/S1) | |
| 20 | Not connected | - | |
| 21 | Battery Voltage Supply after Main Relay | Main Relay | |
| 22 | Battery Voltage Supply after Ignition Key | Ignition Key | |
| 23 | Injector output (cyl. 4) | Injector (cyl. 4) | |
| 24 | Injector output (cyl. 1) | Injector (cyl. 1) | |
| 25 | Spare Sensor supply | Sensors | |
| 26 | Purge Control Solenoid Valve (PCSV) PWM output | Purge Control Solenoid Valve (PCSV) | |
| 27 | Crankshaft Position Sensor ground | Crankshaft Position Sensor | |
| 28 | Not connected | - | |
| 29 | Crankshaft Position Sensor input | Crankshaft Position Sensor | |
| 30 | Camshaft Position Sensor ground | Camshaft Position Sensor | |
| 31 | Engine Coolant Temperature Sensor input | Engine Coolant Temperature Sensor | |
| 32 | Throttle Position Sensor input | Throttle Position Sensor | |
| 33 | Fuel Tank Pressure Sensor Input | Fuel Tank Pressure Sensor | |
| 34 | Fuel Tank Pressure Sensor Ground | Fuel Tank Pressure Sensor | |
| 35 | Not connected | - | |
| 36 | Not connected | - | |
| 37 | HO2S (B1/S2) ground | HO2S (B1/S2) | |
| 38 | Throttle Position Sensor ground | Throttle Position Sensor | |
| 39 | Vehicle Speed Sensor input | Vehicle Speed Sensor | Without ABS |
| Wheel Speed Sensor input | Wheel Speed Sensor | With ABS | |
| 40 | Linear Lambda VIP | HO2S (B1/S1) | |
| 41 | Linear Lambda VN | HO2S (B1/S1) | |
| 42 | HO2S (B1/S2) input | HO2S (B1/S2) | |
| 43 | Not Connected | - | |
| 44 | MAFS, IATS supply | MAFS, IATS | |
| 45 | Throttle Position Sensor supply | Throttle Position Sensor | |
| 46 | Spare Sensor supply 2 | Sensors | |
| 47 | Immobilizer Data Line | Immobilizer | |
| 48 | MAFS, IATS ground | MAFS, IATS | |
| 49 | Not connected | - | |
| 50 | Air Conditioner Compressor Switch input | Triple Switch | |
| 51 | Air Conditioner Pressure switch input | Triple Switch | |
| 52 | Oil Temperature Sensor input | Oil Temperature Sensor | |
| 53 | Linear Lambda VRC | HO2S (B1/S1) | |
| 54 | Knock Sensor ground | Knock Sensor | |
| 55 | Ignition shield ground | Ignition Coil | |
| 56 | Intake Air Temperature Sensor input | MAFS, IATS | |
| 57 | Not connected | - | |
| 58 | Air Conditioner Request Switch input | Air Conditioner Request Switch | |
| 59 | Sensor Ground | Sensors | |
| 60 | Mass Air Flow Sensor signal input | MAFS | |
| 61 | Injector output (cyl.3) | Injector (cyl.3) | |
| 62 | Injector output (cyl.2) | Injector (cyl.2) | |
| 63 | Not connected | - | |
| 64 | Cooling Fan Relay - High control output | Cooling Fan Relay | |
| 65 | Cooling Fan Relay - Low control output | Cooling Fan Relay | |
| 66 | Engine Speed signal output | Tachometer | |
| 67 | Main Relay control output | Main Relay | |
| 68 | Air Conditioner Compressor Relay control output | Air Conditioner Compressor Relay | |
| 69 | Electric Fuel Pump Relay control output | Electric Fuel Pump Relay | |
| 70 | Malfunction Indicating Lamp (MIL) output | Malfunction Indicating Lamp (MIL) | |
| 71 | Immobilizer ground | Immobilizer | With Immobilizer |
| 72 | Camshaft Position Sensor input | Camshaft Position Sensor | |
| 73 | Engine Coolant Temperature Sensor ground | Engine Coolant Temperature Sensor | |
| 74 | Throttle Position PWM output | ||
| 75 | Fuel Consumption signal output | Trip Computer | |
| 76 | Oil Temperature Sensor ground | Oil Temperature Sensor | |
| 77 | Diagnostic Data Line (k-Line) | Data Link Connector (DLC) | |
| 78 | Idle Speed Control Actuator PWM output 2 (CLOSE) | Idle Speed Control Actuator | |
| 79 | Canister Close Valve Output | Canister Close Valve | |
| 80 | Idle Speed Control Actuator PWM output 1 (OPEN) | Idle Speed Control Actuator | |
| 81 | Immobilizer Lamp output | Immobilizer | With Immobilizer |