OBD1 Civic / Integra / Prelude ECU Pin Schematics Wiring Diagrams
Posted by Carrot Top on
This article explores the utilization of ECU pin locations and wire colors in M/T '92-95 Civic, '92-95 Integra, and '92-95 Prelude VTEC and NON-VTEC vehicles. The focus is on OBD1 plug configurations, particularly the common male connectors (A, B, and D) for Honda OBD1 ECUs.
The accompanying image illustrates a 4-plug OBD1 connector, confirming their existence in JDM AUTO 92-95 Civic, Integra, and Preludes. Unfortunately, pin schematics for the JDM 4-plug OBD1 ECU are unavailable.
However, it is noted that connectors A, B, and D should theoretically share the same pin locations as a 5spd 3-plug OBD1 ECU.
The pin-out locations provided in this article were cross-checked against the OBD1 Civic/Integra/Prelude Helm's service manuals. The information presented is relevant to the following:
- All US & JDM OBD1 (92-95) M/T Civic ECUs
- All US & JDM OBD1 (92-95) M/T Integra ECUs
- All US & JDM OBD1 (92-95) M/T Prelude ECUs