## PGM-FI System

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

11-83

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

Is there battery voltage?

YES - Go to step 48.

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

1. Check for continuity between the PGM-FI main relay 1 4P connector terminal No. 3 and ECM connector terminal E7.

Is there continuity?

YES - Test the PGM-FI main relay 1, refer to the 2001 Civic Shop Manual (see page 22-80). If the relay is OK, substitute a known-good ECM and recheck (see page 11-5). If symptom/indication goes away, replace the original ECM.

NO - Repair open in the wire between the PGM-FI main relay 1 and the ECM (E7).

1. Reconnect ECM connector E (31P).

1. Turn the ignition switch ON (II).

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

ECM CONNECTOR A (31P)

Wire side of female terminals

Is there battery voltage?

YES - Go to step 58.

NO - Go to step 52.

1. Turn the ignition switch OFF.

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

LHD model:

RHD model:

a a a