P1574

DTC P1574 (68): Battery Module Temperature Signal Circuit Malfunction

NOTE: If the IPU module fan duct is blocked, DTC P1574 may be detected.

1. Turn the ignition switch ON (II).
2. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1448 indicated?
YES - Do the troubleshooting for DTC P1448.
NO - Go to step 3.

3. Note the value of BATT. MDLS TEMP S1, BATT. MDLS TEMP S2, and BATT. MDLS TEMP S3 in the DATA LIST with the HDS.
4. Check the SOC in the DATA LIST with the HDS. If the SOC is higher than 70 %, start the engine several times until the SOC decreases less than 70%.
5. Compare the value of BATT. MDLS TEMP S1, BATT. MDLS TEMP S2, and BATT. MDLS TEMP S3 in the DATA LIST with the HDS.
Did BATT. MDLS TEMP S1, BATT. MDLS TEMP S2, and BATT. MDLS TEMP S3 change 1.0°F (0.5°C) or more?
YES - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the battery module and the MCM.
NO - Go to step 6.

6. 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, then go to step 7.
NO - Repair the IPU module air duct or IPU module fan as needed, then go to step 8.

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 P1574 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.