IMA System
DTC P0A7F (78): Battery Module DeteriorationNOTE: Before you troubleshoot, record all freeze data, and review the general troubleshooting information.
1. Turn the ignition switch ON (II).
2. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1586 (23) indicated?
YES - Do the troubleshooting for DTC P1586 (23).
NO - Go to step 3.
3. Clear the DTC with the HDS.
4. Check the SOC in the DATA LIST with the HDS.
5. Start the engine, and hold it between 3,500 rpm and 4,000 rpm without load (in Park or neutral) until the SOC increases to 70 %.
6. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1586 (23) indicated?
YES - Do the troubleshooting for DTC P1586 (23).
NO - Replace the battery module, then go to step 7.
7. Turn the ignition switch ON (II).
8. Clear the DTC with the HDS.
9. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0A7F (78) indicated?
YES - Check for poor connections or loose terminals at the battery module, the battery current sensor, and the BCM module, then go to step 1.
NO - Go to step 10.
10. Monitor the OBD STATUS for P0A7F (78) in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 9, go to the indicated DTCs troubleshooting.
NO - If the screen indicates FAILED, check for poor connections or loose terminals at the battery module, the battery current sensor, and the BCM module, then go to step 1. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.