P0562
DTC P0562 (15): Motor Control Module (MCM) Power Source Circuit Unexpected Voltage1. Inspect the No. 7 BACKUP (10A) fuse in the underdash fuse/relay box.
Is the fuse OK?
YES - Go to step 2.
NO - Replace the No. 7 BACK UP (10 A) fuse, then go to step 9.
2. Turn the ignition switch ON (II).
3. Check the MCM BACK UP VOLTAGE in the DATA LIST with the HDS.
Is there less than 4.0 V?
YES - Go to step 4.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the No. 7 BACK UP (10 A) fuse and the MCM.
4. Turn the ignition switch OFF.
5. Turn the battery module switch OFF.
6. Remove the IPU lid.
7. Disconnect MCM connector B (24P).
8. Measure voltage between body ground and MCM connector terminal B24.
Is there battery voltage?
YES - Go to step 19.
NO - Repair open in the wire between the No. 7 BACK UP (10 A) fuse and the MCM (B24), then go to step 13.
9. Check the No. 7 BACK UP (10 A) fuse again.
Is the fuse OK?
YES - Go to step 19.
NO - Go to step 10.
10. Disconnect MCM connector B (24P).
11. Replace the No. 7 BACKUP (10 A) fuse.
12. Measure voltage between body ground and MCM connector terminal B24.
Is there battery voltage?
YES - Go to step 19.
NO - Repair short in the wire between the No. 7 BACK UP (10 A) fuse and the MCM (B24), then go to step 13.
13. Turn the ignition switch OFF.
14. Reconnect all connectors.
15. Reinstall the IPU lid, then turn the battery module switch ON.
16. Turn the ignition switch ON (II).
17. Reset the MCM.
18. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0562 is indicated, check for poor connections or loose terminals at the No. 7 BACK UP (10 A) fuse and the MCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO - Troubleshooting is complete.
19. Reinstall the IPU lid, then turn the battery module switch ON.
20. Update the MCM if It does not have the latest software, or substitute a known-good MCM.
21. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0562 is indicated, check for poor connections or loose terminals at the No. 7 BACK UP (10 A) fuse and the MCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO - If the MCM was updated, troubleshooting is complete. If the MCM was substituted, replace the original MCM.