IMA System
DTC P1570 (66): Battery Module Individual Voltage ProblemNOTE: Before you troubleshoot, record all freeze data, and review the general troubleshooting information.
1. Turn the ignition switch ON (II).
2. Monitor the OBD STATUS for P1570 (66) in the DTCs MENU with the HDS.
Does the screen indicate FAILED?
YES - Go to step 5.
NO - If the screen indicates PASSED, go to step 3. If the screen indicates NOT COMPLETED, go to step 1.
3. Turn the ignition switch ON (II).
4. Check the IMA BATTERY MODULE 1 VOLTAGE through IMA BATTERY MODULE 11 VOLTAGE in the DATA LIST with the HDS.
Is there more than 15 V on at least one?
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 5.
5. Turn the ignition switch OFF.
6. Turn the battery module switch OFF.
7. Remove the IPU lid.
8. Check the terminal connections at BCM module connector B(14P).
Is the connection OK?
YES - Go to step 9.
NO - Repair connections, then go to step 11.
9. Disconnect BCM module connector B (14P).
10. Measure voltage between these BCM module connector terminals:
Are all measurements about 7.0 V or higher?
YES - Go to step 18.
NO - Replace the battery module, then go to step 11.
11. Turn the ignition switch OFF.
12. Reconnect all connectors.
13. Reinstall the IPU lid, then turn the battery module switch ON.
14. Turn the ignition switch ON (II).
15. Clear the DTC with the HDS.
16. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1570 (66) 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 17.
17. Monitor the OBD STATUS for P1570 (66) 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 16, go to the indicated DTCs 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.
18. Reconnect all connectors.
19. Reinstall the IPU lid, then turn the battery module switch ON.
20. Update the BCM module if it does not have the latest software, or substitute a known-good BCM module.
21. Turn the ignition switch ON (II).
22. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1570 (66) indicated?
YES - Check for poor connections or loose terminals at the battery module and the BCM module. If the BCM module was updated, substitute a known-good BCM module, then go to step 21. If the BCM module was substituted, go to step 1.
NO - Go to step 23.
23. Monitor the OBD STATUS for P1570 (66) in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - If the BCM module was updated, troubleshooting is complete. If the BCM module was substituted, replace the original BCM module. If any other Temporary DTCs or DTCs were indicated in step 22, go to the indicated DTCs troubleshooting.
NO - If the screen indicates FAILED, check for poor connections or loose terminals at the battery module and the BCM module. If the BCM module was updated, substitute a known-good BCM module, then go to step 21. If the BCM module was substituted, go to step 1. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until result comes on.