DTC B1C84-14: Rear Window Defroster Circuit Malfunction: Notes
WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
| System malfunction location |
Rear window defroster circuit malfunction |
| Detection condition |
- The front body control module (FBCM) detects an open or short to ground in the rear window defroster relay circuit with the ignition switched ON (engine off or on).
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| Fail-safe |
- |
| Possible cause |
- Rear window defroster relay malfunction
- Front body control module (FBCM) connector or terminal malfunction
- Short to ground in wiring harness between rear window defroster relay terminal E and front body control module (FBCM) terminal 1P
- Open circuit in wiring harness between rear window defroster relay terminal E and front body control module (FBCM) terminal 1P
- Front body control module (FBCM) malfunction
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