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Home >> Acura >> 1991 >> Integra L4-1834cc 1.8L DOHC FI >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Main Relay (Computer/Fuel System) >> Testing and Inspection >> PGM-FI Main Relay Test

PGM-FI Main Relay Test

Relay Testing

NOTE: If the car starts and continues to run, the main relay is OK.

1. Remove the main relay.






2. Attach the battery positive terminal to the No.4 terminal and the battery negative terminal to the No. 8 terminal of the main relay. Then check for continuity between the No.5 terminal and No.7 terminal of the main relay.
- If there is continuity, go on to step 3.
- If there is no continuity, replace the relay and retest.
3. Attach the battery positive terminal to the No.5 terminal and the battery negative terminal to the No. 2 terminal of the main relay. Then check that there is continuity between the No. 1 terminal and No. 3 terminal of the main relay.
- If there is continuity, go on to step 4.
- If there is no continuity, replace the relay and retest.
4. Attach the battery positive terminal to the No.3 terminal and battery negative terminal to the No.8 terminal of the main relay. Then check that there is continuity between the No.5 terminal and No.7 terminal of the main relay.
- If there is continuity, the relay is OK; If the fuel pump still does not work, go to Harness Testing.
- If there is no continuity, replace the relay and retest.

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