DTC B1403-96: Dual Battery Fuse Box - Contactor 2 - Component internal failure: Action
- Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the contactor 2 control circuit between the dual battery module and the dual battery junction box - Circuit reference CONTACTOR_2_CTRL, Circuit reference GND - Check connections are secure and wiring integrity
- Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the dual battery junction box circuits - Circuit reference BATT_2, Circuit reference GATEWAY, Circuit reference GND - Check connections are secure and wiring integrity
- If no wiring/connector faults are found, check and install a new dual battery module. Run dual battery system diagnostic service routine. Clear the DTC and retest
- If fault persists, check and install a new dual battery junction box. Run dual battery system diagnostic service routine