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PGM-FI Main Relay

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




1. Remove the PGM-FI main relay.
2. Attach the battery positive terminal to the No. 3* terminal and the battery negative terminal to the No. 2* terminal of the PGM-FI main relay. Then check for continuity between the No. 5* terminal and No. 2 terminal of the PGM-FI 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. 4 terminal and the battery negative terminal to the No. 7* terminal of the PGM-FI main relay. Then check that there is continuity between the No. 3 terminal and No. 1 terminal of the PGM-FI 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. 1 terminal and battery negative terminal to the No. 2* terminal of the PGM-FI main relay. Then check that there is continuity between the No. 5* terminal and No. 2 terminal of the PGM-FI main relay.
- If there is continuity, the relay is OK;
If the fuel pump still does not work, go to Diagnostic Charts/Non Trouble Code Charts. Testing and Inspection
- If there is no continuity, replace the relay and retest.