DTC Troubleshooting
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. Start the engine.
5. Check the SOC in the DATA LIST with the HDS.
6. Hold the engine speed between 3,500 and 4,000 rpm without load (in Park or neutral) until the SOC increases to 70 %.
7. 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 8.
8. Turn the ignition switch ON (II).
9. Clear the DTC with the HDS.
10. 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 11.
11. Monitor the OBD STATUS for DTC 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 10, go to the indicated DTC's 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.