Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
ECM Terminal And Input/Output signal
ECM Harness Connector (A/T)
ECM Terminal Function (A/T)
Connector [C01-1]
| Pin No. | Description | Connected to |
|---|---|---|
| 1 | Power Ground | Chassis Ground |
| 2 | Power Ground | Chassis Ground |
| 3 | Power Ground | Chassis Ground |
| 4 | For Autotransaxle Control | |
| 5 | For Autotransaxle Control | |
| 6 | Battery voltage supply after main relay | Main Relay |
| 7 | - | |
| 8 | Sensor ground | Manifold Absolute Pressure Sensor (MAPS) |
| 9 | Sensor ground | Heated Oxygen Sensor (Sensor 2) |
| 10 | Manifold Absolute Pressure Sensor signal input | Manifold Absolute Pressure Sensor (MAPS) |
| 11 | - | |
| 12 | - | |
| 13 | Heated Oxygen Sensor (Sensor 2) signal input | Heated Oxygen Sensor (Sensor 2) |
| 14 | - | |
| 15 | - | |
| 16 | - | |
| 17 | Electric Load (Defrost) signal input | |
| 18 | - | |
| 19 | - | |
| 20 | Vehicle speed signal input | ABS Control Module [With ABS] |
| 21 | - | |
| 22 | Electric Load (Head Lamp) signal input | |
| 23 | A/C Switch "ON" signal input | A/C Switch |
| 24 | Power Ground | Chassis Ground |
| 25 | Power Ground | Chassis Ground |
| 26 | For Autotransaxle Control | |
| 27 | For Autotransaxle Control | |
| 28 | - | |
| 29 | Sensor ground | Fuel Tank Pressure Sensor (FTPS) |
| 30 | Sensor ground | A/C Pressure Transducer (APT) |
| 31 | Sensor ground | Heated Oxygen Sensor (Sensor 1) |
| 32 | Intake Air Temperature Sensor signal input | Intake Air Temperature Sensor (IATS) |
| 33 | - | |
| 34 | - | |
| 35 | Heated Oxygen Sensor (Sensor 1) signal input | Heated Oxygen Sensor (Sensor 1) |
| 36 | - | |
| 37 | - | |
| 38 | Sensor ground | Camshaft Position Sensor (CMPS) |
| 39 | - | |
| 40 | - | |
| 41 | Camshaft Position Sensor signal input | Camshaft Position Sensor (CMPS) |
| 42 | - | |
| 43 | - | |
| 44 | Power Steering Switch signal input | Power Steering Switch |
| 45 | - | |
| 46 | A/C thermal switch signal input | A/C Thermal Switch |
| 47 | Power (+5 V) | Auto Cruise Unit |
| 48 | For Autotransaxle Control | |
| 49 | - | |
| 50 | For Autotransaxle Control | |
| 51 | Sensor ground | Throttle Position Sensor (TPS) |
| 52 | - | |
| 53 | Fuel Level Sensor signal input | Fuel Level Sensor (FLS) |
| 54 | - | |
| 55 | - | |
| 56 | - | |
| 57 | For Autotransaxle Control | |
| 58 | - | |
| 59 | - | |
| 60 | For Autotransaxle Control | |
| 61 | For Autotransaxle Control | |
| 62 | For Autotransaxle Control | |
| 63 | For Autotransaxle Control | |
| 64 | Cruise "SET" Lamp control output | Cluster (Cruise "SET" Lamp) |
| 65 | Cruise Control signal output | Auto Cruise Unit |
| 66 | For Autotransaxle Control | |
| 67 | For Autotransaxle Control | |
| 68 | For Autotransaxle Control | |
| 69 | - | |
| 70 | For Autotransaxle Control | |
| 71 | For Autotransaxle Control | |
| 72 | For Autotransaxle Control | |
| 73 | Sensor ground | Engine Coolant Temperature Sensor (ECTS) |
| 74 | - | |
| 75 | Throttle Position Sensor signal input | Throttle Position Sensor (TPS) |
| 76 | - | |
| 77 | Engine Coolant Temperature Sensor signal input | Engine Coolant Temperature Sensor (ECTS) |
| 78 | - | |
| 79 | A/C Pressure Transducer signal input | A/C Pressure Transducer (APT) |
| 80 | For Autotransaxle Control | |
| 81 | For Autotransaxle Control | |
| 82 | For Autotransaxle Control | |
| 83 | For Autotransaxle Control | |
| 84 | For Autotransaxle Control | |
| 85 | - | |
| 86 | - | |
| 87 | For Autotransaxle Control | |
| 88 | For Autotransaxle Control | |
| 89 | For Autotransaxle Control | |
| 90 | For Autotransaxle Control | |
| 91 | For Autotransaxle Control | |
| 92 | For Autotransaxle Control | |
| 93 | - | |
| 94 | For Autotransaxle Control |
Connector [C01-2]
| Pin No. | Description | Connected to |
|---|---|---|
| 1 | Ignition Coil (Cylinder #2) control output | Ignition Coil (Cylinder #2) |
| 2 | Ignition Coil (Cylinder #4) control output | Ignition Coil (Cylinder #4) |
| 3 | Fuel Tank Pressure Sensor signal input | Fuel Tank Pressure Sensor (FTPS) |
| 4 | - | |
| 5 | - | |
| 6 | Idle Speed Control Actuator [OPEN] control output | Idle Speed Control Actuator (ISCA) |
| 7 | "CHECK FUEL CAP" Lamp control output | Cluster ("CHECK FUEL CAP" Lamp) |
| 8 | Purge Control Solenoid Valve control output | Purge Control Solenoid Valve (PCSV) |
| 9 | Main Relay control output | Main Relay |
| 10 | - | |
| 11 | Battery voltage supply after ignition switch | Ignition Switch |
| 12 | CAN [HIGH] | Other control module, Data Link Connector (DLC) |
| 13 | - | |
| 14 | - | |
| 15 | Knock Sensor signal input | Knock Sensor (KS) |
| 16 | Ignition Coil (Cylinder #3) control output | Ignition Coil (Cylinder #3) |
| 17 | Ignition Coil (Cylinder #1) control output | Ignition Coil (Cylinder #1) |
| 18 | - | |
| 19 | - | |
| 20 | - | |
| 21 | Cooling Fan Relay [Low] control output | Cooling Fan Relay [Low] |
| 22 | Idle Speed Control Actuator [CLOSE] control output | Idle Speed Control Actuator (ISCA) |
| 23 | Cooling Fan Relay [High] control output | Cooling Fan Relay [High] |
| 24 | Fuel consumption signal output | Trip Computer |
| 25 | Engine speed signal output | Cluster (Tachometer) |
| 26 | - | |
| 27 | CAN [LOW] | Other control module, Data Link Connector (DLC) |
| 28 | - | |
| 29 | - | |
| 30 | Sensor ground | Knock Sensor (KS) |
| 31 | - | |
| 32 | Immobilizer lamp control output | Immobilizer Lamp |
| 33 | Heated Oxygen Sensor (Sensor 2) Heater control output | Heated Oxygen Sensor (Sensor 2) |
| 34 | Heated Oxygen Sensor (Sensor 1) Heater control output | Heated Oxygen Sensor (Sensor 1) |
| 35 | Fuel Pump Relay control output | Fuel Pump Relay |
| 36 | Injector (Cylinder #3) control output | Injector (Cylinder #3) |
| 37 | Canister Close Valve control output | Canister Close Valve (CCV) |
| 38 | A/C Compressor Relay control output | A/C Compressor Relay |
| 39 | - | |
| 40 | Crankshaft Position Sensor [A] signal input | Crankshaft Position Sensor (CKPS) |
| 41 | - | |
| 42 | Sensor power (+5 V) | Fuel Tank Pressure Sensor (FTPS) |
| 43 | Sensor power (+5 V) | Manifold Absolute Pressure Sensor (MAPS) |
| 44 | Immobilizer communication line | Immobilizer Control Module |
| 45 | Wheel Speed Sensor [A] signal input | Wheel Speed Sensor (WSS) [Without ABS] |
| 46 | - | |
| 47 | - | |
| 48 | Injector (Cylinder #4) control output | Injector (Cylinder #4) |
| 49 | CVVT Oil Control Valve control output | CVVT Oil Control Valve (OCV) |
| 50 | Injector (Cylinder #1) control output | Injector (Cylinder #1) |
| 51 | Malfunction Indicator Lamp (MIL) control output | Cluster (Malfunction Indicator Lamp) |
| 52 | Injector (Cylinder #2) control output | Injector (Cylinder #2) |
| 53 | - | |
| 54 | - | |
| 55 | Crankshaft Position Sensor [B] signal input | Crankshaft Position Sensor (CKPS) |
| 56 | Battery Power | Battery |
| 57 | Sensor power (+5 V) | A/C Pressure Transducer (APT) |
| 58 | Sensor power (+5 V) | Throttle Position Sensor (TPS) |
| 59 | - | |
| 60 | Wheel Speed Sensor [B] signal input | Wheel Speed Sensor (WSS) [Without ABS] |
ECM Terminal Input/Output Signal (A/T)
Connector [C01-1]
| Pin No | Description | Condition | Type | Level | Test Result |
|---|---|---|---|---|---|
| 1 | Power Ground | Idle | DC | Max. 50 mV | 0 V |
| 2 | Power Ground | Idle | DC | Max. 50 mV | 2.4 mV |
| 3 | Power Ground | Idle | DC | Max. 50 mV | 1.8 mV |
| 4 | For Autotransaxle Control | ||||
| 5 | For Autotransaxle Control | ||||
| 6 | Battery voltage supply after main relay | IG OFF | DC | Max. 1.0 V | 0 V |
| IG ON | Battery Voltage | 12.8 V | |||
| 7 | - | ||||
| 8 | Sensor ground | Idle | DC | Max. 50 mV | 13.2 mV |
| 9 | Sensor ground | Idle | DC | Max. 50 mV | 8.9 mV |
| 10 | Manifold Absolute Pressure Sensor signal input | IG ON | DC | 3.9 ~ 4.1 V | 4.05 V |
| Idle | 0.8 ~ 1.6 V | 1.55 V | |||
| 11 | - | ||||
| 12 | - | ||||
| 13 | Heated Oxygen Sensor (Sensor 2) signal input | Racing | Analog | Rich: 0.6 ~ 1.0 V | 872 mV |
| Lean: Max. 0.4 V | 155 mV | ||||
| 14 | - | ||||
| 15 | - | ||||
| 16 | - | ||||
| 17 | Electric Load (Defrost) signal input | S/W OFF | DC | Max. 0.5 V | 0 V |
| S/W ON | Battery Voltage | 13.19 V | |||
| 18 | - | ||||
| 19 | - | ||||
| 20 | Vehicle speed signal input | Vehicle Running | Pulse | Hi: Min. 5.0 V | 12.4 V |
| Lo: Max. 1.0 V | 17 mV | ||||
| 432 Hz at 30 km/h | |||||
| 21 | - | ||||
| 22 | Electric Load (Head Lamp) signal input | S/W OFF | DC | Battery Voltage | 12.96 V |
| S/W ON | Max. 0.5 V | 274 mV | |||
| 23 | A/C Switch "ON" signal input | S/W OFF | DC | Max. 1.0 V | 10.6 mV |
| S/W ON | Battery Voltage | 11.78 V | |||
| 24 | Power Ground | Idle | DC | Max. 50 mV | 2.1 mV |
| 25 | Power Ground | Idle | DC | Max. 50 mV | 1.8 mV |
| 26 | For Autotransaxle Control | ||||
| 27 | For Autotransaxle Control | ||||
| 28 | - | ||||
| 29 | Sensor ground | Idle | DC | Max. 50 mV | 9.2 mV |
| 30 | Sensor ground | Idle | DC | Max. 50 mV | 8.7 mV |
| 31 | Sensor ground | Idle | DC | Max. 50 mV | 7.2 mV |
| 32 | Intake Air Temperature Sensor signal input | Idle | DC | 0 ~ 5.0 V | 1.89 V at 35 °C |
| 33 | - | ||||
| 34 | - | ||||
| 35 | Heated Oxygen Sensor (Sensor 1) signal input | Racing | Analog | Rich: 0.6 ~ 1.0 V | 880 mV |
| Lean: Max. 0.4 V | 208 mV | ||||
| 36 | - | ||||
| 37 | - | ||||
| 38 | Sensor ground | Idle | DC | Max. 50 mV | 3.7 mV |
| 39 | - | ||||
| 40 | - | ||||
| 41 | Camshaft Position Sensor signal input | Idle | Pulse | Hi: Battery Voltage | 13.86 V |
| Lo: Max. 0.5 V | 450 mV | ||||
| 42 | - | ||||
| 43 | - | ||||
| 44 | Power Steering Switch signal input | S/W ON | DC | Battery Voltage | 11.81 V |
| S/W OFF | Max. 0.5 V | 351 mV | |||
| 45 | - | ||||
| 46 | A/C thermal switch signal input | A/C S/W OFF | DC | Max. 1.0 V | 0 V |
| A/C S/W ON | Battery Voltage | 12.77 V | |||
| 47 | Power (+5 V) | ||||
| 48 | For Autotransaxle Control | ||||
| 49 | - | ||||
| 50 | For Autotransaxle Control | ||||
| 51 | Sensor ground | Idle | DC | Max. 50 mV | 6.8 mV |
| 52 | - | ||||
| 53 | Fuel Level Sensor signal input | IG ON | DC | 0 ~ Battery Voltage | 2.14 V |
| 54 | - | ||||
| 55 | - | ||||
| 56 | - | ||||
| 57 | For Autotransaxle Control | ||||
| 58 | - | ||||
| 59 | - | ||||
| 60 | For Autotransaxle Control | ||||
| 61 | For Autotransaxle Control | ||||
| 62 | For Autotransaxle Control | ||||
| 63 | For Autotransaxle Control | ||||
| 64 | Cruise "SET" Lamp control output | ||||
| 65 | Cruise Control signal input | ||||
| 66 | For Autotransaxle Control | ||||
| 67 | For Autotransaxle Control | ||||
| 68 | For Autotransaxle Control | ||||
| 69 | - | ||||
| 70 | For Autotransaxle Control | ||||
| 71 | For Autotransaxle Control | ||||
| 72 | For Autotransaxle Control | ||||
| 73 | Sensor ground | Idle | DC | Max. 50 mV | 2.1 mV |
| 74 | - | ||||
| 75 | Throttle Position Sensor signal input | C.T | Analog | 0.2 ~ 0.7 V | 0.31 V |
| W.O.T | Min. 4.0 V | 4.21 V | |||
| 76 | - | ||||
| 77 | Engine Coolant Temperature Sensor signal input | Idle | Analog | 0.5 ~ 4.5 V | 0.85 V at 95.1 °C |
| 78 | - | ||||
| 79 | A/C Pressure Transducer signal input | A/C ON | Analog | Max. 4.8 V | 2.51 V |
| 80 | For Autotransaxle Control | ||||
| 81 | For Autotransaxle Control | ||||
| 82 | For Autotransaxle Control | ||||
| 83 | For Autotransaxle Control | ||||
| 84 | For Autotransaxle Control | ||||
| 85 | - | ||||
| 86 | - | ||||
| 87 | For Autotransaxle Control | ||||
| 88 | For Autotransaxle Control | ||||
| 89 | For Autotransaxle Control | ||||
| 90 | For Autotransaxle Control | ||||
| 91 | For Autotransaxle Control | ||||
| 92 | For Autotransaxle Control | ||||
| 93 | - | ||||
| 94 | For Autotransaxle Control |
Connector [C01-2]
| Pin No. | Description | Condition | Type | Level | Test Result |
|---|---|---|---|---|---|
| 1 | Ignition Coil (Cylinder #2) control output | Idle | Pulse | 1st Voltage: 300 ~ 400 V | 365 V |
| ON Voltage: Max. 2.0 V | 1.69 V | ||||
| 5.0 Hz | |||||
| 2 | Ignition Coil (Cylinder #4) control output | Idle | Pulse | 1st Voltage: 300 ~ 400 V | 362 V |
| ON Voltage: Max. 2.0 V | 1.69 V | ||||
| 5.0 Hz | |||||
| 3 | Fuel Tank Pressure Sensor signal input | Idle | DC | 0.4 ~ 4.6 V | 2.45 V |
| 4 | - | ||||
| 5 | - | ||||
| 6 | Idle Speed Control Actuator [OPEN] control output | Idle | Pulse | Hi: Battery Voltage | 14.8 V |
| Lo: Max. 1.0 V | 128 mV | ||||
| 250 Hz at duty 32.5% | |||||
| 7 | "CHECK FUEL CAP" Lamp control output | Lamp OFF | DC | Battery Voltage | |
| Lamp ON | Max. 1.0 V | ||||
| 8 | Purge Control Solenoid Valve control output | Active / Inactive | Pulse | Hi: Battery Voltage | 14.2 V |
| Lo: Max. 1.0 V | 215 mV | ||||
| Vpeak: Max. 70 V | 45.2 V | ||||
| 13.68 Hz | |||||
| 9 | Main Relay control output | Relay OFF | DC | Battery Voltage | 12.97 V |
| Relay ON | Max. 1.0 V | 791 mV | |||
| 10 | - | ||||
| 11 | Battery voltage supply after ignition switch | IG OFF | DC | Max. 0.5 V | 2.8 mV |
| IG ON | Battery Voltage | 12.18 V | |||
| 12 | CAN [HIGH] | RECESSIVE | Pulse | 2.0 ~ 3.0 V | 2.36 V |
| DOMINANT | 2.75 ~ 4.5 V | 3.44 V | |||
| 13 | - | ||||
| 14 | - | ||||
| 15 | Knock Sensor signal input | Knocking | Variable Frequency | ||
| Normal | |||||
| 16 | Ignition Coil (Cylinder #3) control output | Idle | Pulse | 1st Voltage: 300 ~ 400 V | 358 V |
| ON Voltage: Max. 2.0 V | 1.68 V | ||||
| 5.0 Hz | |||||
| 17 | Ignition Coil (Cylinder #1) control output | Idle | Pulse | 1st Voltage: 300 ~ 400 V | 349 V |
| ON Voltage: Max. 2.0 V | 1.68 V | ||||
| 5.0 Hz | |||||
| 18 | - | ||||
| 19 | - | ||||
| 20 | - | ||||
| 21 | Cooling Fan Relay [Low] control output | Relay OFF | DC | Battery Voltage | 14.05 V |
| Relay ON | Max. 1.0 V | 52.1 mV | |||
| 22 | Idle Speed Control Actuator [CLOSE] control output | Idle | Pulse | Hi: Battery Voltage | 14.9 V |
| Lo: Max. 1.0 V | 204 mV | ||||
| 250 Hz at duty 67.5% | |||||
| 23 | Cooling Fan Relay [High] control output | Relay OFF | DC | Battery Voltage | 14.12 V |
| Relay ON | Max. 1.0 V | 198 mV | |||
| 24 | Fuel consumption signal output | Idle | Pulse | Hi: Battery Voltage | 13.9 V |
| Lo: Max. 0.5 V | 16.1 mV | ||||
| 25 | Engine speed signal output | Idle | Pulse | Hi: Battery Voltage | 13.9 V |
| Lo: Max. 0.5 V | 12.1 mV | ||||
| 20 ~ 26 Hz | 21.9 Hz | ||||
| 26 | - | ||||
| 27 | CAN [LOW] | RECESSIVE | Pulse | 2.0 ~ 3.0 V | 2.36 V |
| DOMINANT | 0.5 ~ 2.25 V | 1.44 V | |||
| 28 | - | ||||
| 29 | - | ||||
| 30 | Sensor ground | Idle | DC | Max. 50 mV | |
| 31 | - | ||||
| 32 | Immobilizer lamp control output | Lamp OFF | DC | Battery Voltage | 11.98 V |
| Lamp ON | Max. 1.0 V | 27 mV | |||
| 33 | Heated Oxygen Sensor (Sensor 2) Heater control output | Engine Run | Pulse | Hi: Battery Voltage | 14.1 V |
| Lo: Max. 1.0 V | 304 mV | ||||
| 34 | Heated Oxygen Sensor (Sensor 1) Heater control output | Engine Run | Pulse | Hi: Battery Voltage | 14.1 V |
| Lo: Max. 1.0 V | 326 mV | ||||
| 35 | Fuel Pump Relay control output | Relay OFF | DC | Battery Voltage | 12.3 V |
| Relay ON | Max. 1.0 V | 30 mV | |||
| 36 | Injector (Cylinder #3) control output | Idle | Pulse | Hi: Battery Voltage | 14.2 V |
| Lo: Max. 1.0 V | 330 mV | ||||
| Vpeak: Max. 80 V | 69.6 V | ||||
| 37 | Canister Close Valve (CCV) control output | Active Inactive | Pulse | Hi: Battery Voltage | 12.5 V |
| Lo: Max. 1.0 V | 121 mV | ||||
| Vpeak: Max. 70 V | 44.7 V | ||||
| 38 | A/C Compressor Relay control output | Relay OFF | DC | Battery Voltage | 14.32 V |
| Relay ON | Max. 1.0 V | 114 mV | |||
| 39 | - | ||||
| 40 | Crankshaft Position Sensor [A] signal input | Idle | Vp_p: Min. 1.0 V | 8.44 V | |
| 718.4 Hz | |||||
| 41 | - | ||||
| 42 | Sensor power (+5 V) | IG OFF | DC | Max. 0.5 V | |
| IG ON | 4.8 ~ 5.2 V | ||||
| 43 | Sensor power (+5 V) | IG OFF | DC | Max. 0.5 V | 3.6 mV |
| IG ON | 4.8 ~ 5.2 V | 5.02 V | |||
| 44 | Immobilizer communication line | When communicating after IG ON | Pulse | Hi: Min. 8.5 V | 12.31 V |
| Lo: Max. 3.5 V | 1.17 V | ||||
| 45 | Wheel Speed Sensor [A] signal input | Vehicle Run | SINE Wave | Vp_p: Min. 0.2 V | |
| 46 | - | ||||
| 47 | - | ||||
| 48 | Injector (Cylinder #4) control output | Idle | Pulse | Hi: Battery Voltage | 14.2 V |
| Lo: Max. 1.0 V | 330 mV | ||||
| Vpeak: Max. 80 V | 69.6 V | ||||
| 49 | CVVT Oil Control Valve control output | Idle | Pulse | Hi: Battery Voltage | 14.9 V |
| Lo: Max. 1.0 V | 36.2 mV | ||||
| 300.26 Hz at duty 6.1% | |||||
| 50 | Injector (Cylinder #1) control output | Idle | Pulse | Hi: Battery Voltage | 14.2 V |
| Lo: Max. 1.0 V | 330 mV | ||||
| Vpeak: Max. 80 V | 69.6 V | ||||
| 51 | Malfunction Indicator Lamp (MIL) control output | Lamp OFF | DC | Battery Voltage | 13.03 V |
| Lamp ON | Max. 1.0 V | 716 mV | |||
| 52 | Injector (Cylinder #2) control output | Idle | Pulse | Hi: Battery Voltage | 13.6 V |
| Lo: Max. 1.0 V | 340 mV | ||||
| Vpeak: Max. 80 V | 69.7 V | ||||
| 53 | - | ||||
| 54 | - | ||||
| 55 | Crankshaft Position Sensor [B] signal input | Idle | SINE Wave | Vp_p: Min. 1.0 V | 8.44 V |
| 718.4 Hz | |||||
| 56 | Battery Power | Always | DC | Battery Voltage | 12.91 V |
| 57 | Sensor power (+5 V) | IG OFF | DC | Max. 0.5 V | 4.2 mV |
| IG ON | 4.9 ~ 5.1 V | 5.04 V | |||
| 58 | Sensor power (+5 V) | IG OFF | DC | Max. 0.5 V | 0 V |
| IG ON | 4.9 ~ 5.1 V | 5.04 V | |||
| 59 | - | ||||
| 60 | Wheel Speed Sensor [B] signal input | Vehicle Run | SINE Wave | Vp_p: Min. 0.2 V |
ECM Harness Connector (M/T)
ECM Terminal Function (M/T)
Connector [C01]
| Pin No. | Description | Connected to |
|---|---|---|
| 1 | Ignition Coil (Cylinder #1) control output | Ignition Coil (Cylinder #1) |
| 2 | Power Ground | Chassis Ground |
| 3 | Ignition Coil (Cylinder #3) control output | Ignition Coil (Cylinder #3) |
| 4 | - | |
| 5 | - | |
| 6 | Battery voltage supply after main relay | Main Relay |
| 7 | Ignition Coil (Cylinder #4) control output | Ignition Coil (Cylinder #4) |
| 8 | A/C thermal switch signal input | A/C Thermal Switch |
| 9 | - | |
| 10 | Power Steering Switch signal input | Power Steering Switch |
| 11 | Knock Sensor signal input | Knock Sensor (KS) |
| 12 | Sensor ground | Throttle Position Sensor (TPS) |
| 13 | - | |
| 14 | - | |
| 15 | Sensor ground | Manifold Absolute Pressure Sensor (MAPS) |
| 16 | Sensor ground | Heated Oxygen Sensor (Sensor 2) |
| 17 | Sensor ground | Camshaft Position Sensor (CMPS) |
| 18 | Immobilizer communication line | Immobilizer Control Module |
| 19 | Manifold Absolute Pressure Sensor signal input | Manifold Absolute Pressure Sensor (MAPS) |
| 20 | - | |
| 21 | - | |
| 22 | Main Relay control output | Main Relay |
| 23 | Cooling Fan Relay [High] control output | Cooling Fan Relay [High] |
| 24 | Injector (Cylinder #3) control output | Injector (Cylinder #3) |
| 25 | Idle Speed Control Actuator [CLOSE] control output | Idle Speed Control Actuator (ISCA) |
| 26 | - | |
| 27 | - | |
| 28 | Cooling Fan Relay [Low] control output | Cooling Fan Relay [Low] |
| 29 | Ignition Coil (Cylinder #2) control output | Ignition Coil (Cylinder #2) |
| 30 | A/C Switch "ON" signal input | A/C Switch |
| 31 | Electric Load (Head Lamp) signal input | |
| 32 | Sensor ground | Knock Sensor (KS) |
| 33 | Sensor ground | A/C Pressure Transducer (APT) |
| 34 | Sensor ground | Fuel Tank Pressure Sensor (FTPS) |
| 35 | Sensor ground | Engine Coolant Temperature Sensor (ECTS) |
| 36 | Heated Oxygen Sensor (Sensor 2) signal input | Heated Oxygen Sensor (Sensor 2) |
| 37 | - | |
| 38 | Sensor ground | Heated Oxygen Sensor (Sensor 1) |
| 39 | Throttle Position Sensor signal input | Throttle Position Sensor (TPS) |
| 40 | A/C Pressure Transducer signal input | A/C Pressure Transducer (APT) |
| 41 | - | |
| 42 | - | |
| 43 | Intake Air Temperature Sensor signal input | Intake Air Temperature Sensor (IATS) |
| 44 | - | |
| 45 | A/C Compressor Relay control output | A/C Compressor Relay |
| 46 | Canister Close Valve control output | Canister Close Valve (CCV) |
| 47 | Injector (Cylinder #2) control output | Injector (Cylinder #2) |
| 48 | Immobilizer lamp control output | Immobilizer Lamp |
| 49 | Fuel Pump Relay control output | Fuel Pump Relay |
| 50 | Fuel Tank Pressure Sensor signal input | Fuel Tank Pressure Sensor (FTPS) |
| 51 | Power Ground | Chassis Ground |
| 52 | - | |
| 53 | - | |
| 54 | Heated Oxygen Sensor (Sensor 1) signal input | Heated Oxygen Sensor (Sensor 1) |
| 55 | - | |
| 56 | - | |
| 57 | - | |
| 58 | Wheel Speed Sensor [A] signal input | Wheel Speed Sensor (WSS) [Without ABS] |
| 59 | Sensor power (+5 V) | A/C Pressure Transducer (APT) |
| 60 | Sensor power (+5 V) | Throttle Position Sensor (TPS) |
| 61 | - | |
| 62 | CAN [LOW] | Other control module, Data Link Connector (DLC) |
| 63 | Camshaft Position Sensor signal input | Camshaft Position Sensor (CMPS) |
| 64 | Vehicle speed signal input | ABS Control Module [With ABS] |
| 65 | - | |
| 66 | Electric Load (Defrost) signal input | |
| 67 | Engine speed signal output | Cluster (Tachometer) |
| 68 | Injector (Cylinder #4) control output | Injector (Cylinder #4) |
| 69 | Purge Control Solenoid Valve control output | Purge Control Solenoid Valve (PCSV) |
| 70 | Malfunction Indicator Lamp (MIL) control output | Cluster (Malfunction Indicator Lamp) |
| 71 | Heated Oxygen Sensor (Sensor 2) Heater control output | Heated Oxygen Sensor (Sensor 2) |
| 72 | Heated Oxygen Sensor (Sensor 1) Heater control output | Heated Oxygen Sensor (Sensor 1) |
| 73 | Power Ground | Chassis Ground |
| 74 | - | |
| 75 | - | |
| 76 | Fuel Level Sensor signal input | Fuel Level Sensor (FLS) |
| 77 | Engine Coolant Temperature Sensor signal input | Engine Coolant Temperature Sensor (ECTS) |
| 78 | - | |
| 79 | Wheel Speed Sensor [B] signal input | Wheel Speed Sensor (WSS) [Without ABS/ESP] |
| 80 | Sensor power (+5 V) | Fuel Tank Pressure Sensor (FTPS) |
| 81 | Sensor power (+5 V) | Manifold Absolute Pressure Sensor (MAPS) |
| 82 | Battery Power | Battery |
| 83 | Battery voltage supply after ignition switch | Ignition Switch |
| 84 | CAN [HIGH] | Other control module, Data Link Connector (DLC), Multi-Purpose Check Connector |
| 85 | - | |
| 86 | Crankshaft Position Sensor [B] signal input | Crankshaft Position Sensor (CKPS) |
| 87 | Crankshaft Position Sensor [A] signal input | Crankshaft Position Sensor (CKPS) |
| 88 | Fuel consumption signal output | Trip Computer |
| 89 | - | |
| 90 | Idle Speed Control Actuator [OPEN] control output | Idle Speed Control Actuator (ISCA) |
| 91 | Injector (Cylinder #1) control output | Injector (Cylinder #1) |
| 92 | CVVT Oil Control Valve control output | CVVT Oil Control Valve (OCV) |
| 93 | - | |
| 94 | "CHECK FUEL CAP" Lamp control output | Cluster ("CHECK FUEL CAP" Lamp) |
ECM Terminal Input/Output Signal (M/T)
CONNECTOR [C01]
| Pin No. | Description | Condition | Type | Level | Test Result |
|---|---|---|---|---|---|
| 1 | Ignition Coil (Cylinder #1) control output | Idle | Pulse | 1st Voltage: 300 ~ 400 V | 349 V |
| ON Voltage: Max. 2.0 V | 1.68 V | ||||
| 5.0 Hz | |||||
| 2 | Power Ground | Idle | DC | Max. 50 mV | 0 V |
| 3 | Ignition Coil (Cylinder #3) control output | Idle | Pulse | 1st Voltage: 300 ~ 400 V | 358 V |
| ON Voltage: Max. 2.0 V | 1.68 V | ||||
| 5.0 Hz | |||||
| 4 | - | ||||
| 5 | - | ||||
| 6 | Battery voltage supply after main relay | IG OFF | DC | Max. 1.0 V | 0 V |
| IG ON | Battery Voltage | 12.81 V | |||
| 7 | Ignition Coil (Cylinder #4) control output | Idle | Pulse | 1st Voltage: 300 ~ 400 V | 362 V |
| ON Voltage: Max. 2.0 V | 1.69 V | ||||
| 5.0 Hz | |||||
| 8 | A/C thermal switch signal input | A/C S/W OFF | DC | Max. 1.0 V | 0 V |
| A/C S/W ON | Battery Voltage | 12.77 V | |||
| 9 | - | ||||
| 10 | Power Steering Switch signal input | S/W ON | DC | Battery Voltage | 11.81 V |
| S/W OFF | Max. 0.5 V | 351 mV | |||
| 11 | Knock Sensor signal input | Knocking | Variable Frequency | ||
| Normal | |||||
| 12 | Sensor ground | Idle | DC | Max. 50 mV | 13.2 mV |
| 13 | - | ||||
| 14 | - | ||||
| 15 | Sensor ground | Idle | DC | Max. 50 mV | 8.9 mV |
| 16 | Sensor ground | Idle | DC | Max. 50 mV | 7.2 mV |
| 17 | Sensor ground | Idle | DC | Max. 50 mV | 6.8 mV |
| 18 | Immobilizer communication line | When communicating after IG ON | Pulse | Hi: Min. 8.5 V | 12.31 V |
| Lo: Max. 3.5 V | 1.17 V | ||||
| 19 | Manifold Absolute Pressure Sensor signal input | IG ON | DC | 3.9 ~ 4.1 V | 4.05 V |
| Idle | 0.8 ~ 1.6 V | 1.55 V | |||
| 20 | - | ||||
| 21 | - | ||||
| 22 | Main Relay control output | Relay OFF | DC | Battery Voltage | 12.97 V |
| Relay ON | Max. 1.0 V | 791 mV | |||
| 23 | Cooling Fan Relay [High] control output | Relay OFF | DC | Battery Voltage | 14.12 V |
| Relay ON | Max. 1.0 V | 198 mV | |||
| 24 | Injector (Cylinder #3) control output | Idle | Pulse | Hi: Battery Voltage | 14.2 V |
| Lo: Max. 1.0 V | 330 mV | ||||
| Vpeak: Max. 80 V | 69.6 V | ||||
| 25 | Idle Speed Control Actuator [CLOSE] control output | Idle | Pulse | Hi: Battery Voltage | 14.9 V |
| Lo: Max. 1.0 V | 204 mV | ||||
| Vpeak: Max. 80 V | 250 Hz at duty 67.5% | ||||
| 26 | - | ||||
| 27 | - | ||||
| 28 | Cooling Fan Relay [Low] control output | Relay OFF | DC | Battery Voltage | 14.05 V |
| Relay ON | Max. 1.0 V | 52.1 mV | |||
| 29 | Ignition Coil (Cylinder #2) control output | Idle | Pulse | 1st Voltage: 300 ~ 400 V | 365 V |
| ON Voltage: Max. 2.0 V | 1.69 V | ||||
| 5.0 Hz | |||||
| 30 | A/C Switch "ON" signal input | A/C S/W OFF | DC | Max. 1.0 V | 10.6 mV |
| A/C S/W ON | Battery Voltage | 11.78 V | |||
| 31 | Electric Load (Head Lamp) signal input | S/W OFF | DC | Battery Voltage | 12.96 V |
| S/W ON | Max. 0.5 V | 274 mV | |||
| 32 | Sensor ground | Idle | DC | Max. 50 mV | |
| 33 | Sensor ground | Idle | DC | Max. 50 mV | 2.4 mV |
| 34 | Sensor ground | Idle | DC | Max. 50 mV | 9.2 mV |
| 35 | Sensor ground | Idle | DC | Max. 50 mV | 3.7 mV |
| 36 | Heated Oxygen Sensor (Sensor 2) signal input | Racing | Analog | Rich: 0.6 ~ 1.0 V | 872 mV |
| Lean: Max. 0.4 V | 155 mV | ||||
| 37 | - | ||||
| 38 | Sensor ground | Idle | DC | Max. 50 mV | 2.1 mV |
| 39 | Throttle Position Sensor signal input | C.T | Analog | 0.2 ~ 0.7 V | 0.31 V |
| W.O.T | Min. 4.0 V | 4.21 V | |||
| 40 | A/C Pressure Transducer signal input | A/C ON | Analog | Max. 4.8 V | 2.51 V |
| 41 | - | ||||
| 42 | - | ||||
| 43 | Intake Air Temperature Sensor signal input | Idle | DC | 0.2 ~ 4.8 V | 1.89 V at 35 °C |
| 44 | - | ||||
| 45 | A/C Compressor Relay control output | Relay OFF | DC | Battery Voltage | 14.32 V |
| Relay ON | Max. 1.0 V | 114 mV | |||
| 46 | Canister Close Valve control output | Active Inactive | Pulse | Hi: Battery Voltage | 12.5 V |
| Lo: Max. 1.0 V | 121 mV | ||||
| Vpeak: Max. 70 V | 44.7 V | ||||
| 47 | Injector (Cylinder #2) control output | Idle | Pulse | Hi: Battery Voltage | 13.6 V |
| Lo: Max. 1.0 V | 340 mV | ||||
| Vpeak: Max. 80 V | 69.7 V | ||||
| 48 | Immobilizer lamp control output | Lamp OFF | DC | Battery Voltage | 11.98 V |
| Lamp ON | Max. 1.0 V | 27 mV | |||
| 49 | Fuel Pump Relay control output | Relay OFF | DC | Battery Voltage | 12.3 V |
| Relay ON | Max. 1.0 V | 30 mV | |||
| 50 | Fuel Tank Pressure Sensor signal input | Idle | DC | 0.4 ~ 4.6 V | 2.45 V |
| 51 | Power Ground | Idle | DC | Max. 50 mV | 1.8 mV |
| 52 | - | ||||
| 53 | - | ||||
| 54 | Heated Oxygen Sensor (Sensor 1) signal input | Racing | Analog | Rich: 0.6 ~ 1.0 V | 880 mV |
| Lean: Max. 0.4 V | 208 mV | ||||
| 55 | - | ||||
| 56 | - | ||||
| 57 | - | ||||
| 58 | Wheel Speed Sensor [A] signal input | Vehicle Run | SINE Wave | Vp_p: Min. 0.2 V | |
| 59 | Sensor power (+5 V) | IG OFF | DC | Max. 0.5 V | 4.2 mV |
| IG ON | 4.9 ~ 5.1 V | 5.04 V | |||
| 60 | Sensor power (+5 V) | IG OFF | DC | Max. 0.5 V | 0 V |
| IG ON | 4.9 ~ 5.1 V | 5.04 V | |||
| 61 | - | ||||
| 62 | CAN [LOW] | RECESSIVE | Pulse | 2.0 ~ 3.0 V | 2.36 V |
| DOMINANT | 0.5 ~ 2.25 V | 1.44 V | |||
| 63 | Camshaft Position Sensor signal input | Idle | Pulse | Hi: Battery Voltage | 13.86 V |
| Lo: Max. 0.5 V | 450 mV | ||||
| 64 | Vehicle speed signal input | Vehicle Running | Pulse | Hi: Min. 4.5 V | 12.4 V |
| Lo: Max. 1.0 V | 17 mV | ||||
| 432 Hz at 30 km/h | |||||
| 65 | - | ||||
| 66 | Electric Load (Defrost) signal input | S/W OFF | DC | Max. 0.5 V | 0 mV |
| S/W ON | Battery Voltage | 13.19 V | |||
| 67 | Engine speed signal output | Idle | Pulse | Hi: Battery Voltage | 13.9 V |
| Lo: Max. 0.5 V | 12.1 mV | ||||
| 20 ~ 26 Hz | 21.9 Hz | ||||
| 68 | Injector (Cylinder #4) control output | Idle | Pulse | Hi: Battery Voltage | 14.2 V |
| Lo: Max. 1.0 V | 330 mV | ||||
| Vpeak: Max. 80 V | 69.6 V | ||||
| 69 | Purge Control Solenoid Valve control output | Active / Inactive | Pulse | Hi: Battery Voltage | 14.2 V |
| Lo: Max. 1.0 V | 215 mV | ||||
| Vpeak: Max. 70 V | 45.2 V | ||||
| 13.68 Hz | |||||
| 70 | Malfunction Indicator Lamp (MIL) control output | Lamp OFF | DC | Battery Voltage | 13.03 V |
| Lamp ON | Max. 1.0 V | 716 mV | |||
| 71 | Heated Oxygen Sensor (Sensor 2) Heater control output | Engine Run | Pulse | Hi: Battery Voltage | 14.1 V |
| Lo: Max. 1.0 V | 304 mV | ||||
| 72 | Heated Oxygen Sensor (Sensor 1) Heater control output | Engine Run | Pulse | Hi: Battery Voltage | 14.1 V |
| Lo: Max. 1.0 V | 326 mV | ||||
| 73 | Power Ground | Idle | DC | Max. 50 mV | 2.1 mV |
| 74 | - | ||||
| 75 | - | ||||
| 76 | Fuel Level Sensor signal input | IG ON | DC | 0 ~ Battery Voltage | 2.14 V |
| 77 | Engine Coolant Temperature Sensor signal input | Idle | Analog | 0.5 ~ 4.5 V | 0.85 V at 95.1 °C |
| 78 | - | ||||
| 79 | Wheel Speed Sensor [B] signal input | Vehicle Run | SINE Wave | Vp_p: Min. 0.2 V | |
| 80 | Sensor power (+5 V) | IG OFF | DC | Max. 0.5 V | 3.6 mV |
| IG ON | 4.8 ~ 5.2 V | 5.02 V | |||
| 81 | Sensor power (+5 V) | IG OFF | DC | Max. 0.5 V | 3.6 mV |
| IG ON | 4.8 ~ 5.2 V | 5.02 V | |||
| 82 | Battery Power | Always | DC | Battery Voltage | 12.23 V |
| 83 | Battery voltage supply after ignition switch | IG OFF | DC | Max. 1.0 V | 2.8 mV |
| IG ON | Battery Voltage | 12.18 V | |||
| 84 | CAN [HIGH] | RECESSIVE | Pulse | 2.0 ~ 3.0 V | 2.36 V |
| DOMINANT | 2.75 ~ 4.5 V | 3.44 V | |||
| 85 | - | ||||
| 86 | Crankshaft Position Sensor [B] signal input | Idle | SINE Wave | Vp_p: Min. 1.0 V | 8.44 V |
| 718.4 Hz | |||||
| 87 | Crankshaft Position Sensor [A] signal input | Idle | SINE Wave | Vp_p: Min. 1.0 V | 8.44 V |
| 718.4 Hz | |||||
| 88 | Fuel consumption signal output | Idle | Pulse | Hi: Battery Voltage | 13.9 V |
| Lo: Max. 0.5 V | 16.1 mV | ||||
| 89 | - | ||||
| 90 | Idle Speed Control Actuator [OPEN] control output | Idle | Pulse | Hi: Battery Voltage | 14.8 V |
| Lo: Max. 1.0 V | 128 mV | ||||
| 250 Hz at duty 32.5% | |||||
| 91 | Injector (Cylinder #1) control output | Idle | Pulse | Hi: Battery Voltage | 14.2 V |
| Lo: Max. 1.0 V | 330 mV | ||||
| Vpeak: Max. 80 V | 69.6 V | ||||
| 92 | CVVT Oil Control Valve control output | Idle | Pulse | Hi: Battery Voltage | 14.9 V |
| Lo: Max. 1.0 V | 36.2 mV | ||||
| 300.26 Hz at duty 6.1% | |||||
| 93 | - | ||||
| 94 | "CHECK FUEL CAP" Lamp control output | Lamp OFF | DC | Battery Voltage | |
| Lamp ON | Max. 1.0 V |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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