P0563
DTC P0563: ECM/PCM Power Source Circuit Unexpected Voltage1. Reset the ECM/PCM.
2. Turn the ignition switch OFF.
3. Wait 5 seconds.
4. Turn the ignition switch ON (II).
Is DTC P0563 indicated?
YES - Go to step 5.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the No.6 ECU (ECM/PCM) (15A) fuse in the under-hood fuse/relay box and at the ECM/PCM.
5. Turn the ignition switch OFF.
6. Disconnect ECM/PCM connector E (31 P).
7. Measure voltage between ECM/PCM connector terminal E7 and body ground.
Is there battery voltage?
YES - Go to step 11.
NO - Go to step 8.
8. Remove the glove box.
9. Remove PGM-FI main relay 1 (A).
10. 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.
NO - Replace PGM-FI main relay 1.
11. Reconnect ECM/PCM connector E (31P).
12. Measure voltage between ECM/PCM connector terminal E7 and body ground.
Is there battery voltage?
YES - Go to step 13.
NO - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.
13. Disconnect ECM/PCM connector A (31P).
14. Measure voltage between body ground and ECM/PCM connector terminals A3 and A2 individually.
Is there battery voltage?
YES - Go to step 15.
NO - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.
15. Remove the glove box.
16. Remove PGM-FI main relay 1 (A).
17. 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.
NO - Replace PGM-FI main relay 1.