P1570

DTC P1570 (66): Battery Module Individual Voltage Problem
1. Turn the ignition switch ON (II).
2. Reset the MCM.
3. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1570 indicated?
YES - Go to step 6.
NO - Go to step 4.

4. Turn the ignition switch ON (II).
5. Check the BATT. MDL VOLTAGE 1 to BATT. MDL VOLTAGE 10 in the DATA LIST with the HDS.
Is there more than 15 V at least one?
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. Turn the ignition switch OFF.
7. Turn the battery module switch OFF.
8. Remove the IPU lid.
9. Check for connections at MCM connector C (14P).
Is the connection OK?
YES - Go to step 10.
NO - Repair connection in the MCM connector, then go to step 12.

10. Disconnect MCM connector C (14P).
11. Measure voltage between the following MCM connector terminals:
^ C14 and C6
^ C6 and C13
^ C13 and C5
^ C5 and C12
^ C12 and C4
^ C3 and C9
^ C9 and C2
^ C2 and C8
^ C8 and C1
^ C1 and C7





Are all measurements about 7.0 V or higher?
YES - Go to step 18.
NO - Replace the battery module, then go to step 12.

12. Turn the ignition switch OFF.
13. Reconnect all connectors.
14. Reinstall the IPU lid, then turn the battery module switch ON.
15. Turn the ignition switch ON (II).
16. Reset the MCM.
17. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P1570 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.

18. Reinstall the IPU lid, then turn the battery module switch ON.
19. Update the MCM if it does not have the latest software, or substitute a known-good MCM.
20. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P1570 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 - If the MCM was updated, troubleshooting is complete. If the MCM was substituted, replace the original MCM.