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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 163 (On-Board Diagnostic - Connectivity Master Unit) >> DTC B1238-01; Speaker Circuit Malfunction >> Without Bose® >> Notes

Without Bose®: Notes

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DETECTION CONDITION AND POSSIBLE CONDITION

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