Idle Control System

PSP Switch Signal Circuit Troubleshooting (cont'd)

11-70  

  1. Measure voltage between ECM/PCM connector terminals A24 and E16.

ECM/PCM CONNECTORS

Wire side of female terminals

Is there battery voltage?

YES - Replace the PSP switch.

NO - Go to step 15.

  1. Turn the ignition switch OFF.
  2. Disconnect ECM/PCM connector E (31P).
  3. Check for continuity between body ground and ECM/PCM connector terminal E16.

ECM/PCM CONNECTOR E (31P)

Wire side of female terminals

Is there continuity?

YES - Repair short in the wire between ECM/PCM (E16) and the PSP switch.

NO - Substitute a known-good ECM/PCM and recheck for immobiliser information, refer to the '01 Civic Shop Manual (see page 11-6). If the symptom/indication goes away, replace the original ECM/PCM.