Harness Test
Harness Testing1. Keep the ignition switch in the OFF position.
2. Disconnect the main relay connector.
3. Check for continuity between the BLK wire 2 in the connector and body ground.
- If there is continuity, go to step 4.
- If there is no continuity, repair open in BLK wire.
4. Attach the positive probe of voltmeter to the YEL/BLU wire 1 and the negative probe to the BLK wire 2.
Battery voltage should be available.
- If there is no voltage, check the ECU fuse (under-hood fuse/relay box) and the wiring between the main relay and ECU fuse (10 A).
5. Attach the positive probe of voltmeter to the BLK/YEL wire 5 and the negative probe to the BLK wire 2.
6. Turn the ignition switch ON.
Battery voltage should be available
- If there is no voltage, check No. 2 fuse and the wiring from the ignition switch to the fuse box and the wiring from the fuse box to the main relay.
7. Attach the positive probe of voltmeter to the BLK/GRN (M/T), BLU/RED (A/T) wire 6 and the negative probe to the BLK wire 2.
8. Turn the ignition switch to START position.
Approximately 10 volts should be available.
- If there is no voltage, check the No. 9 (7.5 A) fuse and the wiring between the ignition switch and fuse box and from the fuse box to the main relay.
9. Connect a jumper wire between the BLK/YEL wire 5 and YEL wire 7.
The fuel pump should work.
- If the fuel pump does not work, check the wiring between the main relay and fuel pump, and the wiring from the fuel pump to the ground (BLK wire).