P0AC7
DTC P0AC7 (51): Battery Module Temperature Sensor 2 Circuit Low Voltage1. Turn the ignition switch ON (II).
2. Check the BATT. MDLS TEMP S2 in the DATA LIST with the HDS.
Is about 0.05 V or less indicated?
YES - Go to step 3.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the battery module and the MCM
3. Turn the ignition switch OFF.
4. Turn the battery module switch OFF.
5. Remove the IPU lid.
6. Disconnect the battery module 6P connector.
7. Turn the ignition switch ON (II).
8. Check the BATT. MDLS TEMP S2 in the DATA LIST with the HDS.
Is about 0.05 V or less indicated?
YES - Go to step 9.
NO - Replace the battery module, then go to step 12.
9. Turn the ignition switch OFF.
10. Disconnect MCM connector B (24P).
11. Check for continuity between MCM connector terminal B8 and body ground.
Is there continuity?
YES - Repair short in the wire between the battery module and the MCM (B8), then go to step 12.
NO - Go to step 18.
12. Turn the ignition switch OFF.
13. Reconnect all connectors.
14. Reinstall the IPU lid, then turn the battery module switch ON.
15. Turn the ignition switch ON (II).
16. Reset the MCM.
17. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0AC7 is indicated, check for poor connections or loose terminals at the battery module 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.
18. Reinstall the IPU lid, then turn the battery module switch ON.
19. Update the MCM if it does not have the latest software, or substitute a known-good MCM.
20. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0AC7 is indicated, check for poor connections or loose terminals at the battery module 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.