The B18C1 is found in the Acura Integra which first made its debut in 1994 and eventually ended it’s production run in 2001. This Acura Integra ECU pinout is for a 1995 Acura Integra GSR, and this Acura Integra ECU pinout is for the OBDI P72 from 1992-1995.
This P72 ECU has different variations of OBDIA and B, as well as automatic transmission differences. Please double check which ECU you have before checking our Acura Integra ECU pinout.
| Terminal No. (Symbols) | Signal Type | Terminal Description |
Condition |
Specified Condition |
| A4 |
Analog |
VTEC Solenoid Valve | Always | 9 to 14 V |
| A21 |
RPM |
Ignition Control Module | Always | 9 to 14 V |
| A24 |
Ground |
Power Ground | Always | 0 |
| A25 | Power | Power source of ECM | Ignition switch ON | 9 to 14 V |
| D17 |
MAP Sensor |
Manifold Pressure | Ignition switch ON | 0 to 3 V |
| D17 |
Speed |
Vehicle Speed Sensor | Ignition switch ON | Pulse generation (See waveform) |
| D6 |
Analog |
VTEC Pressure Switch | Ignition switch ON | 9 to 14 V |
| D11 |
Analog |
Throttle Position Sensor | Ignition switch ON | 0 to 5.0 V |
| D14 |
Analog |
Primary O2 Sensor | Ignition switch ON | 0.5 to 3.0 V |
| D3 |
Analog |
knock Sensor | Always | 0.5 to 3.4 V |
| D15 |
Analog |
Air Intake Sensor | Idling, intake temp. 80°C (176°F) | Pulse generation (See waveform) |
This Acura Integra ECU pinout will allow you to install, wire or modify any piggyback ecu into your ecu / PCM as well as wiring in VTEC if needed.
Happy Tuning!
