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!