P0563
DTC P0563: ECM Power Source Circuit Unexpected Voltage1. Reset the ECM with the HDS.
2. Turn the ignition switch OFF.
3. Wait 5 seconds.
4. Turn the ignition switch ON (II).
5. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0563 indicated?
YES - Go to step 6.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the No.7 (15 A) fuse in the under-hood fuse/relay box and the ECM.
6. Turn the ignition switch OFF.
7. Disconnect ECM connector A (32P).
8. Measure voltage between ECM connector terminal A8 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 (IGP).
11. Check for continuity between ECM connector terminal A8 and body ground.
Is there continuity?
YES - Repair short in the wire between the ECM (A8) and PGM-FI main relay 1 (IGP).
NO - Replace PGM-FI main relay 1 (IGP).
12. Reconnect ECM connector A (32P).
13. Measure voltage between ECM connector terminal A8 and body ground.
Is there battery voltage?
YES - Go to step 14.
NO - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM.
14. Disconnect ECM connector B (25P).
15. Measure voltage between body ground and ECM connector terminals B1 and B9 individually.
Is there battery voltage?
YES - Go to step 16.
NO - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM.
16. Remove PGM-FI main relay 1 (IGP).
17. Measure voltage between body ground and ECM connector terminals B1 and B9 individually.
Is there battery voltage?
YES - Repair short to power in the wire between the ECM (B1, B9) and PGM-FI main relay 1 (IGP).
NO - Replace PGM-FI main relay 1 (IGP).