PGM-FI System

DTC Troubleshooting (cont'd)

11-534  

  1. Measure voltage between ECM/PCM connector terminal E7 and body ground.

ECM/PCM CONNECTOR E (31P)

Wire side of female terminals

Is there battery voltage?

YES

- Go to step 13.

NO

- Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM.


  1. Disconnect ECM/PCM connector A (31P).
  2. Measure voltage between body ground and ECM/PCM connector terminals A3 and A2 individually.

ECM/PCM CONNECTOR A (31P)

Wire side of female terminals

Is there battery voltage?

YES

- Go to step 15.

NO

- Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM.


  1. Remove the glove box.
  1. Remove the PGM-FI main relay 1 (A).

  1. Measure voltage between body ground and ECM/PCM connector terminals A3 and A2 individually.

ECM/PCM CONNECTOR A (31P)

Wire side of female terminals

Is there battery voltage?

YES

- Repair short to power in the wire between the ECM/PCM (A2, A3) and the PGM-FI main relay 1.

NO

- Replace the PGM-FI main relay 1.