DTC B124A-11: DRL Circuit Malfunction [Electrical Supply Unit (ESU)]: Notes
DTC B124A-11: (ELECTRICAL SUPPLY UNIT) DETECTION CONDITION AND POSSIBLE CAUSE
| Description |
DRL circuit malfunction |
| Detection condition |
- Electrical supply unit (ESU) detects a short to ground in the DRL circuit with the ignition switched ON (engine off or on).
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| Fail-safe |
Not applicable |
| Possible cause |
- DRL bulb (LH) malfunction (bulb type)
- DRL bulb (RH) malfunction (bulb type)
- DRL (LH) connector or terminal malfunction
- DRL (RH) connector or terminal malfunction
- Electrical supply unit (ESU) connector or terminal malfunction
- Short to ground in wiring harness between the following terminals:
- Electrical supply unit (ESU) terminal 4J-DRL (LH) terminal A
- Electrical supply unit (ESU) terminal 4J-DRL (RH) terminal A
- DRL (LH) malfunction (LED type)
- DRL (RH) malfunction (LED type)
- Electrical supply unit (ESU) malfunction
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 Courtesy of MAZDA MOTORS CORP.
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