The 17C61 uses (A, B, D, E) with varying pin counts. Common configurations:
Jeeto Wiring Manual | PDF | Electrical Wiring | Troubleshooting 17c61 ecu pinout
Sensors (analogue)
Note: Some pins change function based on software version (16V vs 8V). Always cross-check with vehicle VIN. The 17C61 uses (A, B, D, E) with varying pin counts
| Pin | Signal Name | Type | Description | |-----|-------------|------|--------------| | B1 | Idle Air Control (IAC) coil 1 | Output | Stepper motor phase A | | B2 | IAC coil 2 | Output | Stepper motor phase B | | B3 | IAC coil 3 | Output | Stepper motor phase C | | B4 | IAC coil 4 | Output | Stepper motor phase D | | B5 | Fuel pump relay | Output | Switched ground to energize relay | | B6 | Main relay control | Output | Switched ground to keep main relay on | | B7 | Check Engine Light (MIL) | Output | Dashboard warning lamp (ground switching) | | B8 | Electric fan relay | Output | Radiator fan (low or high speed) | | B9 | A/C compressor clutch | Output | Enables AC compressor if AC request present | | B10 | A/C request | Input | From A/C switch or pressure switch | | B11 | Power steering switch | Input | Idle-up signal when steering load detected | | B12 | Brake switch | Input | Brake pedal (for torque reduction) | | B13 | Clutch switch | Input | For idle-up and deceleration | | B14 | Vehicle speed sensor | Input | Hall sensor from gearbox (digital square wave) | | B15 | Starter motor signal | Input | 12V when cranking | | B16 | Lambda sensor 1 (primary) | Input | Narrowband O2 sensor (0–1V) | | B17 | Lambda sensor heater | Output | Ground for O2 heater | | B18 | EGR solenoid | Output | Exhaust gas recirculation (if equipped) | | B19 | EVAP purge | Output | Canister purge solenoid | | B20 | Auxiliary output | Output | Variable – optional relay (e.g., second fan) | | B21..B34 | Various I/O | Mixed | Alarm, tachometer output (pin B23 typically 12V tacho) | | Pin | Signal Name | Type |