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) (15 A) 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 (31P).
7. Turn the ignition switch ON (II).
8. Measure voltage between ECM/PCM connector terminal E7 and body ground.
Is there battery voltage?
YES - Go to step 12.
NO - Go to step 9.
9. Remove the glove box.
10. Remove PGM-FI main relay 1 (A).
11. 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.
12. Reconnect ECM/PCM connector E (31P).
13. Measure voltage between ECM/PCM connector terminal E7 and body ground.
Is there battery voltage?
YES - Go to step 14.
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.
14. Disconnect ECM/PCM connector A (31P).
15. Measure voltage between body ground and ECM/PCM connector terminals A3 and A2 individually.
Is there battery voltage?
YES - Go to step 16.
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.
16. Remove the glove box.
17. Remove PGM-FI main relay 1 (A).
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 the PGM-FI main relay 1.
NO - Replace PGM-FI main relay 1.