DTC B1143-13: IG2 Relay Control Circuit Malfunction: Notes
DTC B1143:13 (FRONT BODY CONTROL MODULE (FBCM)) DETECTION CONDITION AND POSSIBLE CAUSE
| Description |
IG2 Relay Control Circuit Malfunction |
| Detection condition |
- Front body control module (FBCM) detects an open circuit or short to ground in the IG2 relay control circuit for 2 s or more with the ignition switched ON (engine off or on).
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| Fail-safe |
Not applicable |
| Possible cause |
- Start stop unit connector or terminal malfunction
- Front body control module (FBCM) connector or terminal malfunction
- Short to ground in the wiring harness between start stop unit terminal 2D and front body control module (FBCM) terminal 2U
- Open circuit in the wiring harness between start stop unit terminal 2D and front body control module (FBCM) terminal 2U
- Start stop unit malfunction
- Front body control module (FBCM) malfunction
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 Courtesy of MAZDA MOTORS CORP.
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