DTC Troubleshooting
DTC Troubleshooting: P0563
DTC P0563:
PCM Power Source Circuit Unexpected Voltage
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.
1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Wait 10 seconds.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. Check for Pending or Confirmed 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 PGM-FI main relay 1 and the PCM.�
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector A (49P).
10. Measure the voltage between PCM connector terminal A6 and body ground.
Is there battery voltage?
YES -
Go to step 13.
NO -
Go to step 11.
11. Remove PGM-FI main relay 1 (A) from the under-hood fuse/relay box.
12. Check for continuity between PCM connector terminal A6 and body ground.
Is there continuity?
YES -
Repair a short in the wire between the PCM(A6) and PGM-FI main relay 1, then go to step 19.
NO -
Go to step 18.
13. Reconnect PCM connector A (49P).
14. Disconnect PCM connector B (49P).
15. Measure the voltage between PCM connector terminal B3 and body ground.
Is there battery voltage?
YES -
Go to step 16.
NO -
Go to step 26.
16. Remove PGM-FI main relay 1 (A) from the under-hood fuse/relay box.
17. Measure the voltage between PCM connector terminal B3 and body ground.
Is there battery voltage?
YES -
Repair a short to power in the wire between the PCM (B3) and PGM-FI main relay 1, then go to step 19.
NO -
Go to step 18.
18. Test PGM-FI main relay 1 Testing and Inspection.
Is the relay OK?
YES -
Go to step 26.
NO -
Replace PGM-FI main relay 1, then go to step 19.
19. Reconnect all connectors.
20. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
21. Reset the PCM with the HDS.
22. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
23. Wait 10 seconds.
24. Do the PCM idle learn procedure PCM Idle Learn Procedure.
25. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0563 indicated?
YES -
Check for poor connections or loose terminals at PGM-FI main relay 1 and the PCM, then go to step 1.
NO -
Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.�
26. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
27. Reconnect all connectors.
28. Update the PCM if it does not have the latest software PCM Update, or substitute a known-good PCM.
29. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0563 indicated?
YES -
Check for poor connections or loose terminals at PGM-FI main relay 1 and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 1.
NO -
If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM Service and Repair. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.�