DTC Troubleshooting

DTC Troubleshooting: P1574 (68)

DTC P1574 (68):

Battery Module Temperature Signal Circuit Malfunction

NOTE:

- Before you troubleshoot, record all freeze data, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.
- If the IPU module fan duct is blocked, DTC P1574 (68) may be detected.

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

2. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.

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

Is DTC P1448 (63) indicated?

YES -

Do the troubleshooting for DTC P1448 (63) P1448.

NO -

Go to step 4.

4. Record the value of IMA BATTERY TEMPERATURE SENSOR 1, IMA BATTERY TEMPERATURE SENSOR 2, and IMA BATTERY TEMPERATURE SENSOR 3 in the DATA LIST with the HDS.

5. Check the SOC in the DATA LIST with the HDS. If the SOC is higher than 65 %, start the engine several times until the SOC decreases to less than 65 %.

6. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.

7. Start the engine, and hold it between 3,500 rpm and 4,000 rpm without load (in P or N) until the SOC increases to above 70 %.

8. Compare the value of IMA BATTERY TEMPERATURE SENSOR 1, IMA BATTERY TEMPERATURE SENSOR 2, and IMA BATTERY TEMPERATURE SENSOR 3 in the DATA LIST with the HDS to the values noted in step 4.

Do any of the values differ 1.0 °F (0.5 °C) or more?

YES -

Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the battery module and the BCM module.�

NO -

Go to step 9.

9. Check the IPU module air duct and the IPU module fan for disconnections, damage, or obstructions.

Are the IPU module air duct and the IPU module fan OK?

YES -

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

NO -

Repair the IPU module air duct or IPU module fan as needed, then go to step 10.

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

11. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.

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

Is DTC P1574 (68) indicated?

YES -

Check for poor connections or loose terminals at the battery module and the BCM module, then go to step 1.

NO -

Go to step 13.

13. Monitor the OBD STATUS for DTC P1574 (68) in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES -

Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 12, go to the indicated DTC's troubleshooting.�

NO -

If the screen indicates FAILED, check for poor connections or loose terminals at the battery module 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.