Manufacturer Code Charts: 78

DTC Troubleshooting: P0A7F (78)

DTC P0A7F:

Battery Module Deterioration

NOTE:

- Before you troubleshoot, record all freeze data, and any on-board snapshot, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.
- If the DTC cannot be cleared, do the troubleshooting for DTC U1204.

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Start the engine.

4. Check the SOC in the DATA LIST with the HDS.

5. Hold the engine speed between 3,500 rpm and 4,000 rpm without load (in P or N (CVT model)) (in neutral (M/T model)) until the SOC increases to 25%.

6. Test drive at 25 mph (40 km/h).

7. Press the brake pedal, and stop the vehicle slowly.

8. Monitor the OBD STATUS for P1586 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES -

Replace the battery module Service and Repair, then go to step 10.

NO -

If the HDS indicates FAILED, go to step 9. If the HDS indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.�

9. Check for poor connections or loose terminals at the battery current sensor and the MCM.

Are the connections and the terminals OK?

YES -

Replace the battery module Service and Repair, then go to step 10.

NO -

Repair the connections or the terminals, then go to step 10.

10. Turn the ignition switch to ON (II).

11. Clear the DTC with the HDS.

12. Check for Pending or Confirmed DTCs with the HDS.

Are any DTCs indicated?

YES -

Go to the indicated DTC's troubleshooting.�

NO -

Troubleshooting is complete.�