DTC Troubleshooting
DTC P0563: ECM/PCM Power Source Circuit Unexpected VoltageNOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
- Information marked with an asterisk (*) applies to '06-08 models.
1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch OFF.
4. Wait 10 seconds.
5. Turn the ignition switch ON (II).
6. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0563 indicated?
YES - Go to step 7.
NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the No. 8 FI ECU (ECM/PCM) (15 A) fuse in the under-hood fuse/relay box, PGM-FI main relay 1 (FI MAIN), and the ECM/PCM.
7. Turn the ignition switch OFF.
8. Jump the SCS line with the HDS.
9. Disconnect ECM/PCM connector E (31P).
10. Measure voltage between ECM/PCM connector terminal E7 and body ground.
Is there battery voltage?
YES - Go to step 13.
NO - Go to step 11.
11. Remove the left kick panel, then remove PGM-FI main relay 1 (FI MAIN) (A) from the under-dash fuse/relay box.
12. Check for continuity between ECM/PCM connector terminal E7 and body ground.
Is there continuity?
YES - Repair short in the wire between the ECM/PCM (E7) and PGM-FI main relay 1 (FI MAIN), then go to step 20.
NO - Go to step 19.
13. Reconnect ECM/PCM connector E (31P).
14. Measure voltage between ECM/PCM connector terminal E7 and body ground.
Is there battery voltage?
YES - Go to step 15.
NO - Go to step 27.
15. Disconnect ECM/PCM connector A (31P).
16. Measure voltage between body ground and ECM/PCM connector terminals A3 and A2 individually.
Is there battery voltage?
YES - Go to step 17.
NO - Go to step 27.
17. Remove the left kick panel, then remove PGM-FI main relay 1 (FI MAIN) (A) from the under-dash fuse/relay box.
18. Measure voltage between body ground and ECM/PCM connector terminals A3 and A2 individually.
Is there battery voltage?
YES - Repair short to power in the wire between the ECM/PCM (A2, A3) and PGM-FI main relay 1 (FI MAIN), then go to step 20.
NO - Go to step 19.
19. Test PGM-FI main relay 1 (FI MAIN).
Is PGM-FI main relay 1 (FI MAIN) OK?
YES - Go to step 27.
NO - Replace PGM-FI main relay 1 (FI MAIN), then go to step 20.
20. Reconnect all connectors.
21. Turn the ignition switch ON (II).
22. Reset the ECM/PCM with the HDS.
23. Do the ECM/PCM idle learn procedure.
24. Turn the ignition switch OFF.
25. Wait 10 seconds.
26. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0563 indicated?
YES - Check for poor connections or loose terminals at PGM-FI main relay 1 (FI MAIN) and the ECM/PCM, then go to step 1.
NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
27. Reconnect all connectors.
28. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM.
29. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0563 indicated?
YES - Check for poor connections or loose terminals at PGM-FI main relay 1 (FI MAIN) and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then recheck. If the ECM/PCM was substituted, go to step 1.
NO - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.