3. ECM Terminal Input/Output Signal
ECM TERMINAL INPUT/OUTPUT SIGNAL DESCRIPTION
| Pin | Description | Vehicle State | Input, Output value | Remark | |
|---|---|---|---|---|---|
| Type | Range | ||||
| 1 | Power ground | Idle | DC | Max. 50 mV | |
| 2 | Battery voltage after ignition key supply | IG OFF | DC | Max. 0.5V | |
| IG ON | DC | V bat | |||
| 3 | Power ground | Idle | DC | Max. 50 mV | |
| 4 | Battery voltage after ignition key supply | IG OFF | DC | Max. 1.0V | |
| IG ON | DC | V bat | |||
| 5 | ECM ground | Idle | DC | Max. 50 mV | |
| 6 | Direct battery voltage supply | IG off | Current | 1.0mV | |
| Always | DC | V bat | |||
| 7 | Ignition coil for CYL. 1 (without immobilizer) or Ignition coil for CYL. 4 (with immobilizer) | Idle | Pulse | 1st voltage: 300~400V | |
| ON voltage: Max. 2V | |||||
| 8 | Ignition shield ground | Idle | DC | Max. 50 mV | |
| 9 | MAFS & IATS ground | Idle | DC | Max. 50 mV | |
| 10 | Mass air flow sensor signal input | Idle | Analog | 0 ~ 2.0V | |
| 3000 rpm | 1.0 ~ 4.5V | ||||
| 11 | Throttle position sensor2 signal input | C.T | Analog | Min. 4V | |
| W.O.T | 0.25 ~ 0.9V | ||||
| 12 | Accelerator position sensor2 (APS2) ground | Idle | DC | Max. 50 mV | |
| 13 | Accelerator position sensor2 (APS2) signal input | C.T | Analog | 0.3 ~ 0.9V | |
| W.O.T | 1.5 ~ 3.0V | ||||
| 14 | Engine coolant temperature (ECTS) ground | Idle | DC | Max. 50 mV | |
| 15 | ECTS signal input | Engine run | DC | 0.5V ~ 4.5V | |
| 16 | HO2S (Bank1/Sensor1) ground | Idle | DC | Max. 50 mV | |
| 17 | HO2S (Bank1/Sensor1) signal input | Engine run | Analog | Rich: 0.6 ~ 1.0V | |
| Lean: 0 ~ 0.4V | |||||
| 18 | Intake air temperature sensor (IATS) signal input | Engine run | Analog | 0 ~ 5.0V | |
| 19 | Accelerator position sensor1 (APS1) ground | Idle | DC | Max. 50 mV | |
| 20 | Accelerator position sensor1 (APS 1) signal input | C.T | Analog | 0.3 ~ 0.9V | |
| W.O.T | 4.0 ~ 4.8V | ||||
| 21 | Knock sensor ground | Idle | DC | Max. 50 mV | |
| 22 | Knock sensor signal input | Normal | Voltage | 2.0 ~ 3.0V | |
| Knocking | Frequency | Frequency change | |||
| 23 | TPS supply (+5V) | IG OFF | DC | Max. 0.5V | |
| IG ON | DC | 4.9 ~ 5.1V | |||
| 24 | Accelerator position sensor1 (APS1) supply (+5V) | IG OFF | DC | Max. 0.5V | |
| IG ON | DC | 4.9 ~ 5.1V | |||
| 25 | Injector for CYL. 1 | Idle | Pulse | High: V bat | |
| Low: Max. 1.0V | |||||
| Peak voltage:Max.80V | |||||
| 26 | Injector for CYL. 3 | Idle | Pulse | High: V bat | |
| Low: Max. 1.0V | |||||
| Peak voltage:Max.80V | |||||
| 27 | Injector for CYL. 4 | Idle | Pulse | High: V bat | |
| Low: Max. 1.0V | |||||
| Peak voltage:Max.80V | |||||
| 28 | Injector for CYL. 2 | Idle | Pulse | High: V bat | |
| Low: Max. 1.0V | |||||
| Peak voltage:Max.80V | |||||
| 29 | Ignition coil for CYL. 3 (without immobilizer) or Ignition coil for CYL. 2 (with immobilizer) | Idle | Pulse | 1st voltage: 300~400V | |
| ON voltage: Max. 2V | |||||
| 30 | Power steering sensor ground | Idle | DC | Max. 50 mV | |
| 31 | - | ||||
| 32 | - | ||||
| 33 | Fuel tank pressure sensor signal input | Idle | DC | 0.4 ~ 4.6V | |
| 34 | Fuel tank pressure sensor ground | Idle | DC | Max. 50mV | |
| 35 | A/C pressure transducer signal input | Idle | DC | 0.4 ~ 4.6V | |
| 36 | Fuel level gauge signal input | ||||
| 37 | CVVT oil temperature sensor (OTS) ground | Idle | DC | Max. 50 mV | |
| 38 | HO2S (Bank1/Sensor2) signal input | Engine run | Analog | Rich: 0.6 ~ 1.0V | |
| Lean: 0 ~ 0.4V | |||||
| 39 | HO2S (Bank1/Sensor2) ground | Idle | DC | Max. 50 mV | |
| 40 | CVVT oil temperature sensor (OTS) signal input | idle | Analog | 0.5 ~ 4.5V | |
| 41 | Throttle position sensor1 signal input | C.T | Analog | Min. 4V | |
| W.O.T | 0.25 ~ 0.9V | ||||
| 42 | Throttle position sensor ground | Idle | DC | Max. 50 mV | |
| 43 | - | ||||
| 44 | - | ||||
| 45 | - | ||||
| 46 | - | ||||
| 47 | Accelerator position sensor1 (APS2) supply (+5V) | IG OFF | DC | Max. 0.5V | |
| IG ON | DC | 4.9 ~ 5.1V | |||
| 48 | Sensor supply (+5V) | IG OFF | DC | Max. 0.5V | |
| IG ON | DC | 4.9 ~ 5.1V | |||
| 49 | - | ||||
| 50 | - | ||||
| 51 | Ignition coil for CYL. 4 (without immobilizer) or Ignition coil for CYL. 1 (with immobilizer) | Idle | Pulse | 1st voltage: 300~400V | |
| ON voltage: Max. 2V | |||||
| 52 | Power steering sensor signal input | Idle | DC | 0.4 ~ 4.6V | |
| 53 | Wheel speed signal input from ABS unit or Vehicle speed sensor signal | ||||
| 54 | - | ||||
| 55 | Wheel speed sensor (+) inductive signal | Vehicle run | Sine wave | Min. 0.2V | Without ABS and VDC system |
| 56 | Wheel speed sensor (-) inductive signal | Vehicle run | Sine wave | Min. 0.2V | Without ABS, and VDC system |
| 57 | A/C pressure transducer ground | Idle | DC | Max. 50 mV | |
| 58 | Cruise control switch signal | Cruise SW ON | DC | Min. 4.9V | |
| Resume / Accel | 2.0 ~ 2.2V | ||||
| Set / Coast | 0.7 ~ 0.8V | ||||
| Cancel | Max. 50mV | ||||
| 59 | Cruise control switch ground | Idle | DC | Max. 50mV | |
| 60 | A/C request switch signal input | A/C OFF | DC | Max. 1.0V | |
| A/C ON | V bat | ||||
| 61 | Alternator FR signal input | Idle | Pulse | Low: Max. 1.5V | |
| High:V bat | |||||
| 62 | A/C compressor switch signal input | A/C OFF | DC | Max. 1.0V | |
| A/C ON | V bat | ||||
| 63 | Fuel consumption signal | Idle | Pulse | High: V bat | |
| Low: Max. 0.5V | |||||
| 64 | Main relay control | Relay OFF | DC | Max. 1.0V | |
| Relay ON | V bat | ||||
| 65 | PWM fan control | A/C ON | Pulse | High: V bat | |
| Low: Max. 0.5V | |||||
| 66 | CVVT oil control valve (OCV) control | Idle | Pulse | High: V bat | |
| Low: Max. 1.0V | |||||
| 67 | PCSV control | ON | Pulse | V bat | |
| OFF | Max. 1.0V | ||||
| 68 | - | ||||
| 69 | Immobilizer lamp output | Lamp off | DC | V bat | |
| Lamp on | DC | Max. 1.0V | |||
| 70 | Electric fuel pump relay control | Relay OFF | DC | Max. 1.0V | |
| Relay ON | DC | V bat | |||
| 71 | ETS Motor output 1 | Idle | PULSE | High: V bat | |
| Low: Max. 1.0V | |||||
| 72 | ETS Motor output 2 | Idle | Pulse | High: V bat | |
| Low: Max. 1.0V | |||||
| 73 | Ignition coil for CYL. 2 (without immobilizer) or Ignition coil for CYL. 3 (with immobilizer) | Idle | Pulse | 1st voltage: 300~400V | |
| ON voltage: Max. 2V | |||||
| 74 | Brake test switch signal input | OFF | DC | High: V bat | |
| ON | Low: Max. 0.5V | ||||
| 75 | Immobilizer data line | After IG ON | Pulse | High: Min. 8.5V | |
| Low: Max. 3.5V | |||||
| 76 | Diagnostic data line (K-line) | Receiving | Pulse | High: above V bat*70% | |
| Low: below V batx30% | |||||
| Sending | Pulse | High: above V bat*80% | |||
| Low: below V bat*20% | |||||
| 77 | CAN [High] | RECESSIVE | Pulse | 2.0 ~ 3.0 V | |
| DOMINANT | 2.75 ~ 4.5 V | ||||
| 78 | CAN [Low] | RECESSIVE | Pulse | 2.0 ~ 3.0 V | |
| DOMINANT | 0.5 ~ 2.25 V | ||||
| 79 | Camshaft position sensor (CMPS) ground | Idle | DC | Max. 50mV | |
| 80 | Camshaft position sensor (CMPS) signal input | Engine run | Pulse | High: VCC | |
| Low: Max. 0.5V | |||||
| 81 | Crankshaft position sensor (CKPS) ground | Idle | DC | Max. 50 mV | |
| 82 | Crankshaft position sensor (CKPS) signal input | Engine run | Pulse | High: VCC | |
| Low: Max. 0.5V | |||||
| 83 | Brake light switch signal input | OFF | DC | High: V bat | |
| ON | Low: Max. 0.5V | ||||
| 84 | Clutch switch signal input | ||||
| 85 | Throttle position PWM output | Idle | Pulse | High: V bat | |
| Low: Max. 0.5V | |||||
| 86 | Engine speed signal output | Idle | Pulse | High: V bat | |
| Low: Max. 0.5V | |||||
| Idle = 20 ~ 26Hz | |||||
| 87 | A/C compressor relay control output | A/C OFF | DC | V bat | |
| A/C ON | DC | Max. 1.0V | |||
| 88 | Cooling fan relay-High control output | Relay OFF | DC | V bat | |
| Relay ON | DC | Max. 1.0V | |||
| 89 | Cruise lamp control output | Lamp OFF | DC | V bat | |
| Lamp ON | Max. 1.0V | ||||
| 90 | Cruise set lamp control output | Lamp OFF | DC | V bat | |
| Lamp ON | Max. 1.0V | ||||
| 91 | Canister close valve control | ON | DC | V bat | |
| OFF | Max. 1.0V | ||||
| 92 | Malfunction indicator lamp (MIL) output | MIL OFF | DC | V bat | |
| MIL ON | Max. 1.0V | ||||
| 93 | HO2S heater (Bank1/Sensor1) | Engine run | Pulse | High: V bat | |
| Low: 0 ~ 0.5 V | |||||
| 94 | HO2S heater (Bank1/Sensor2) | Engine run | Pulse | High: V bat | |
| Low: Max. 1.0 V | |||||