1. | Turn the ignition switch OFF. |
2. | Remove the fuse cover. |
3. | Remove PGM-FI main relay 2 (A) from the under-dash fuse/relay box.
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4. | Turn the ignition switch ON (II). |
5. | Measure voltage between PGM-FI main relay 2 4P connector terminal No. 3 and body ground.
Is there battery voltage? YES - Go to 6. NO - Repair open in the wire between PGM-FI main relay 1 and PGM-FI main relay 2.n |
6. | Measure voltage between PGM-FI main relay 2 4P connector terminal No. 1 and body ground.
Is there battery voltage? YES - Go to 12. NO - Go to 7. |
7. | Turn the ignition switch OFF. |
8. | Disconnect the inertia switch 3P connector. |
9. | Connect inertia switch 3P connector terminals No. 1 and No. 3 with a jumper wire.
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10. | Turn the ignition switch ON (II). |
11. | Measure voltage between PGM-FI main relay 2 4P connector terminal No. 1 and body ground.
Is there battery voltage? YES - Replace the inertia switch.n NO - Repair open in the wire between the under-dash fuse/relay box and PGM-FI main relay 2.n |
12. | Turn the ignition switch OFF. |
13. | Connect PGM-FI main relay 2 4P connector terminal No. 4 to body ground with a jumper wire.
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14. | Wait 10 seconds. |
15. | Connect the ECM test harness and test pin box between the ECM and connectors. |
16. | Check for continuity between test pin box terminal No. 90 and body ground. Is there continuity? YES - Go to 17. NO - Repair open in the wire between PGM-FI main relay 2 and ECM connector No. 4 terminal No. 9 (test pin box terminal No. 90).n |
17. | Reinstall PGM-FI main relay 2. |
18. | Turn the ignition switch ON (II). |
19. | Measure voltage between pin box terminal No. 90 and body ground. Is there battery voltage? YES - Go to 20. NO - Replace PGM-FI main relay 2.n |
20. | Turn the ignition switch OFF. |
21. | Turn the ignition switch ON (II), and measure voltage between pin box terminal No. 90 and body ground. Is there battery voltage? YES - Substitute a known-good ECM/PCM and recheck. If the symptom/indiction goes away, replace the original ECM/ PCM.n NO - Go to 22. |
22. | Turn the ignition switch OFF. |
23. | Remove the access panel from the floor. |
24. | Measure voltage between fuel pump 5P connector terminal No. 5 and body ground within the first 2 seconds after the ignition switch was turned ON (II).
Is there battery voltage? YES - Go to 31. NO - Go to 25. |
25. | Turn the ignition switch OFF. |
26. | Remove the fuse cover. |
27. | Remove PGM-FI main relay 2 (A) from the under-dash fuse/relay box.
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28. | Connect PGM-FI main relay 2 4P connector terminals No. 1 and No. 2 with a jumper wire.
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29. | Turn the ignition switch ON (II). |
30. | Measure voltage between fuel pump 5P connector terminal No. 5 and body ground within the first 2 seconds after the ignition switch was turned ON (II).
Is there battery voltage? YES - Replace PGM-FI main relay 2.n NO - Repair open in the wire between PGM-FI main relay 2 and the fuel pump 5P connector.n |
31. | Turn the ignition switch OFF. |
32. | Check for continuity between fuel pump 5P connector terminal No. 4 and body ground.
Is there continuity? YES - Replace the fuel pump.n NO - Repair open in the wire between the fuel pump 5P connector and G402.n |