No Comm From Micro to CCB3

No communication with Compartment Control Board 3 (CCB3).

Possible causes

Harness disconnection at compartment 3
Lack of power at C3 module
Internal failure of CCB3 card

Recommended actions

Verify wiring continuity to compartment 3
Check power supply and C3 fuse
Test for CAN signal at the connector
Replace CCB3 card if inoperative

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