2. ECM Terminal Function
ECM TERMINAL FUNCTION DESCRIPTION
| Pin | Description | Connected to | Remark |
|---|---|---|---|
| 1 | Power ground | Chassis ground | |
| 2 | Battery voltage after ignition key supply | Ignition key | |
| 3 | Power ground | Chassis ground | |
| 4 | Battery voltage after main relay supply | Main relay | |
| 5 | ECM ground | Chassis ground | |
| 6 | Direct battery voltage supply | Battery (+) | |
| 7 | Ignition coil for CYL. 1 (without immobilizer) or Ignition coil for CYL. 4 (with immobilizer) | Ignition coil (CYL. 1 or 4) | |
| 8 | Ignition shield ground | Ignition coil (CYL. 1,2, 3,4) | |
| 9 | MAFS & IATS ground | MAFS & IATS | |
| 10 | MAFS & IATS input | MAFS & IATS | |
| 11 | Throttle position sensor 2 signal input | Electronic Throttle System module | |
| 12 | Accelerator position sensor2 (APS2) ground | APS | |
| 13 | Accelerator position sensor2 (APS2) signal input | APS | |
| 14 | Engine coolant temperature (ECTS) ground | ECTS | |
| 15 | ECTS signal input | ECTS | |
| 16 | HO2S (Bank1/Sensor1) ground | HO2S (Bank1/Sensor1) | |
| 17 | HO2S (Bank1/Sensor1) signal input | HO2S (Bank1/Sensor1) | |
| 18 | Intake air temperature sensor (IATS) signal input | Intake air temperature sensor (IATS) | |
| 19 | Accelerator position sensor1 (APS1) ground | APS | |
| 20 | Accelerator position sensor1 (APS1) signal input | APS | |
| 21 | Knock sensor ground | Knock sensor | |
| 22 | Knock sensor signal input | Knock sensor | |
| 23 | TPS supply (+5V) | Electronic Throttle System module | |
| 24 | Accelerator position sensor1 (APS1) supply (+5V) | APS | |
| 25 | Injector for CYL. 1 | Injector (CYL.1) | |
| 26 | Injector for CYL. 3 | Injector (CYL.3) | |
| 27 | Injector for CYL. 4 | Injector (CYL.4) | |
| 28 | Injector for CYL. 2 | Injector (CYL.2) | |
| 29 | Ignition coil for CYL. 3 (without immobilizer) or Ignition coil for CYL. 2 (with immobilizer) | Ignition coil (CYL. 3 or 2) | |
| 30 | Power steering sensor ground | Power steering sensor | |
| 31 | - | - | |
| 32 | - | - | |
| 33 | Fuel tank pressure sensor signal input | Fuel tank pressure sensor | |
| 34 | Fuel tank pressure sensor ground | Fuel tank pressure sensor | |
| 35 | A/C pressure transducer signal input | A/C pressure transducer | |
| 36 | Fuel level gauge signal input | Fuel level gauge | |
| 37 | CVVT oil temperature sensor (OTS) ground | CVVT oil temperature sensor (OTS) | |
| 38 | HO2S (Bank1/Sensor2) signal input | HO2S (Bank1/Sensor2) | |
| 39 | HO2S (Bank1/Sensor2) ground | HO2S (Bank1/Sensor2) | |
| 40 | CVVT oil temperature sensor (OTS) signal input | CVVT oil temperature sensor (OTS) | |
| 41 | Throttle position sensor1 signal input | Electronic Throttle System module | |
| 42 | Throttle position sensor ground | Electronic Throttle System module | |
| 43 | - | - | |
| 44 | - | - | |
| 45 | - | - | |
| 46 | - | - | |
| 47 | Accelerator position sensor1 (APS2) supply (+5V) | APS | |
| 48 | Sensor supply (+5V) | Power steer'g sensor, A/C pressure transducer | |
| 49 | - | - | |
| 50 | - | - | |
| 51 | Ignition coil for CYL. 4 (without immobilizer) or Ignition coil for CYL. 1 (with immobilizer) | Ignition coil (CYL. 4 or 1) | |
| 52 | Power steering sensor signal input | Power steering sensor | |
| 53 | Wheel speed signal from ABS unit or VDC unit | ABS unit or VDC unit | |
| 54 | - | - | Ω |
| 55 | Wheel speed sensor (+) inductive signal | Wheel speed sensor | without ABS and VDC system |
| 56 | Wheel speed sensor (-) inductive signal | Wheel speed sensor | without ABS and VDC system |
| 57 | A/C pressure transducer ground | A/C pressure transducer | |
| 58 | Cruise control switch signal | Steering wheel | |
| 59 | Cruise control switch ground | Steering wheel | |
| 60 | A/C request switch signal input | A/C request switch | |
| 61 | Alternator FR signal input | Alternator | |
| 62 | A/C compressor switch signal input | A/C compressor | |
| 63 | Fuel consumption signal | Cluster | |
| 64 | Main relay control | Main relay | |
| 65 | PWM fan control | Fan control unit | |
| 66 | CVVT oil control valve (OCV) control | CVVT oil control valve (OCV) | |
| 67 | PCSV control | PCSV | |
| 68 | - | - | |
| 69 | Immobilizer lamp output | Immobilizer lamp | |
| 70 | Electric fuel pump relay control | Electric fuel pump relay | |
| 71 | ETS Motor output 1 | ETS Motor | |
| 72 | ETS Motor output 2 | ETS Motor | |
| 73 | Ignition coil for CYL. 2 (without immobilizer) or Ignition coil for CYL. 3 (with immobilizer) | Ignition coil (CYL. 2 or 3) | |
| 74 | Brake test switch signal input | Brake test switch | |
| 75 | Immobilizer data line | Immobilizer | |
| 76 | Diagnostic data line (K-line) | Data Link Connector (DLC) | |
| 77 | CAN [High] | ABS Control module | |
| 78 | CAN [Low] | ABS Control module | |
| 79 | Camshaft position sensor (CMPS) ground | CMPS | |
| 80 | Camshaft position sensor (CMPS) signal input | CMPS | |
| 81 | Crankshaft position sensor (CKPS) ground | CKPS | |
| 82 | Crankshaft position sensor (CKPS) signal input | CKPS | |
| 83 | Brake light switch signal input | Brake light switch | |
| 84 | Clutch switch signal input | Clutch switch | |
| 85 | Throttle position PWM output | VDC control module | |
| 86 | Engine speed signal output | Tachometer | |
| 87 | A/C compressor relay control output | A/C compressor relay | |
| 88 | Cooling fan relay-High control output | Cooling fan relay | |
| 89 | Cruise lamp control | Cluster | |
| 90 | Cruise set lamp control | Cluster | |
| 91 | Canister close valve control | Canister close valve | |
| 92 | Malfunction indicator lamp (MIL) output | Malfunction indicator lamp (MIL) | |
| 93 | HO2S heater (Bank1/Sensor1) | HO2S heater (Bank1/Sensor1) | |
| 94 | HO2S heater (Bank1/Sensor2) | HO2S heater (Bank1/Sensor2) |