## PGM-FI System

#### MIL Circuit Troubleshooting (cont'd)

11-84

1. Turn the ignition switch ON (II).

1. Measure voltage between the PGM-FI main relay 1 4P connector terminal No. 2 and body ground.

Is there battery voltage?

YES - Go to step 56.

NO - Repair open in the wire between the No. 6 ECU (ECM) (15A) fuse and the PGM-FI main relay 1.

1. Turn the ignition switch OFF.

1. Check for continuity between the PGM-FI main relay 1 4P connector terminal No. 1 and ECM connector terminals A2 and A3 individually.

Is there continuity?

YES - Replace the PGM-FI main relay 1.

NO - Repair open in the wire between the PGM-FI main relay 1 and the ECM (A2, A3).

1. Measure voltage between body ground and ECM connector terminals A4, A5, A23 and A24 individually.

ECM CONNECTOR A (31P)

Wire side of female terminals

Is there less than 1.0 V?

YES - Repair open in the wire(s) between that had more than 1.0 V between G101 and the ECM (A4, A5, A23, A24).

NO - Go to step 59.

1. Measure voltage between body ground and ECM connector terminal A21.

ECM CONNECTOR A (31P)

Wire side of female terminals

Is there about 5 V?

YES - Go to step 67.

NO - Go to step 60.

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