DTC B1238-01: Speaker 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.
| Description |
Speaker circuit malfunction |
| Detection condition |
- The connectivity master unit (CMU) detected a short to ground or short to power supply in the speaker circuit with the ignition switched ON (engine off or on).
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| Fail-safe |
Not applicable |
| Possible cause |
- Tuner and amp unit (TAU) connector or terminal malfunction
- Front door speaker (LH) connector or terminal malfunction
- Tweeter (LH) connector or terminal malfunction
- Short to ground in wiring harness between the following terminals:
- Tuner and amp unit (TAU) terminal 2A and front door speaker (LH) terminal C
- Tuner and amp unit (TAU) terminal 2C and front door speaker (LH) terminal B
- Tuner and amp unit (TAU) terminal 2A and tweeter (LH) terminal B
- Tuner and amp unit (TAU) terminal 2C and tweeter (LH) terminal A
- Short to power supply in wiring harness between the following terminals:
- Tuner and amp unit (TAU) terminal 2A and front door speaker (LH) terminal C
- Tuner and amp unit (TAU) terminal 2C and front door speaker (LH) terminal B
- Tuner and amp unit (TAU) terminal 2A and tweeter (LH) terminal B
- Tuner and amp unit (TAU) terminal 2C and tweeter (LH) terminal A
- Front door speaker (LH) malfunction
- Tweeter (LH) malfunction
- Front door speaker (RH) connector or terminal malfunction
- Tweeter (RH) connector or terminal malfunction
- Short to ground in wiring harness between the following terminals:
- Tuner and amp unit (TAU) terminal 2D and front door speaker (RH) terminal C
- Tuner and amp unit (TAU) terminal 2F and front door speaker (RH) terminal B
- Tuner and amp unit (TAU) terminal 2D and tweeter (RH) terminal B
- Tuner and amp unit (TAU) terminal 2F and tweeter (RH) terminal A
- Short to power supply in wiring harness between the following terminals:
- Tuner and amp unit (TAU) terminal 2D and front door speaker (RH) terminal C
- Tuner and amp unit (TAU) terminal 2F and front door speaker (RH) terminal B
- Tuner and amp unit (TAU) terminal 2D and tweeter (RH) terminal B
- Tuner and amp unit (TAU) terminal 2F and tweeter (RH) terminal A
- Front door speaker (RH) malfunction
- Tweeter (RH) malfunction
- Rear door speaker (LH) connector or terminal malfunction
- Short to ground in wiring harness between the following terminals:
- Tuner and amp unit (TAU) terminal 2S and rear door speaker (LH) terminal C
- Tuner and amp unit (TAU) terminal 2U and rear door speaker (LH) terminal B
- Short to power supply in wiring harness between the following terminals:
- Tuner and amp unit (TAU) terminal 2S and rear door speaker (LH) terminal C
- Tuner and amp unit (TAU) terminal 2U and rear door speaker (LH) terminal B
- Rear door speaker (LH) malfunction
- Rear door speaker (RH) connector or terminal malfunction
- Short to ground in wiring harness between the following terminals:
- Tuner and amp unit (TAU) terminal 2V and rear door speaker (RH) terminal C
- Tuner and amp unit (TAU) terminal 2X and rear door speaker (RH) terminal B
- Short to power supply in wiring harness between the following terminals:
- Tuner and amp unit (TAU) terminal 2V and rear door speaker (RH) terminal C
- Tuner and amp unit (TAU) terminal 2X and rear door speaker (RH) terminal B
- Rear door speaker (RH) malfunction
- Tuner and amp unit (TAU) malfunction
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