No Check Engine Light
- Turn ignition on. If oil pressure light is on, go to step 2). If light is off, inspect fuse No. 1. If fuse is okay, repair open circuit in Yellow wire between fuse and combination meter.
- Turn ignition off. Connect ECU Test Harness (07999-PD6000A
) between ECU and connector. See Fig 1
. Connect terminal B6 to ground. See Fig 2
. Turn ignition on. If CHECK ENGINE light is now on, go to step 3). If light is off, replace light bulb or repair open in Green/Red wire between ECU terminal A13 and combination meter.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
- Individually measure voltage between ground and ECU terminals A2, A4, A16 and A18. If less than one volt is present, substitute a known good ECU, and recheck. If condition is corrected, replace original ECU. If more than one volt is present, repair open in wire between ECU and thermostat housing ground having more than one volt.