P0A7F

DTC P0A7F (78): Battery Module Deterioration
1. Turn the ignition switch ON (II).
2. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1586 indicated?
YES - Do the troubleshooting for DTC P1586.
NO - Go to step 3.

3. Reset the MCM.
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 indicated?
YES - Do the troubleshooting for DTC P1586.
NO - Replace the battery module, then go to step 7.

7. Turn the ignition switch ON (II).
8. Reset the MCM.
9. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0A7F 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.