LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2017 >> CX-9 Touring, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic - Connectivity Master Unit >> DTC B1238-01; Speaker Circuit Malfunction >> Without Bose®

Without Bose®

DETECTION CONDITION & POSSIBLE CAUSE

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).
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 2N-Front door speaker (LH) terminal B
    • Tuner and amp unit (TAU) terminal 2P-Front door speaker (LH) terminal C
    • Tuner and amp unit (TAU) terminal 2N-Tweeter (LH) terminal A
      • Tuner and amp unit (TAU) terminal 2P-Tweeter (LH) terminal B
  • Short to power supply in wiring harness between the following terminals:
    • Tuner and amp unit (TAU) terminal 2N-Front door speaker (LH) terminal B
    • Tuner and amp unit (TAU) terminal 2P-Front door speaker (LH) terminal C
    • Tuner and amp unit (TAU) terminal 2N-Tweeter (LH) terminal A
      • Tuner and amp unit (TAU) terminal 2P-Tweeter (LH) terminal B
  • 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 2Q-Front door speaker (RH) terminal C
    • Tuner and amp unit (TAU) terminal 2O-Front door speaker (RH) terminal B
    • Tuner and amp unit (TAU) terminal 2Q-Tweeter (RH) terminal B
      • Tuner and amp unit (TAU) terminal 2O-Tweeter (RH) terminal A
  • Short to power supply in wiring harness between the following terminals:
    • Tuner and amp unit (TAU) terminal 2Q-Front door speaker (RH) terminal C
    • Tuner and amp unit (TAU) terminal 2O-Front door speaker (RH) terminal B
    • Tuner and amp unit (TAU) terminal 2Q-Tweeter (RH) terminal B
      • Tuner and amp unit (TAU) terminal 2O-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 2L-Rear door speaker (LH) terminal C
      • Tuner and amp unit (TAU) terminal 2J-Rear door speaker (LH) terminal B
  • Short to power supply in wiring harness between the following terminals:
    • Tuner and amp unit (TAU) terminal 2L-Rear door speaker (LH) terminal C
      • Tuner and amp unit (TAU) terminal 2J-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 2M-Rear door speaker (RH) terminal C
      • Tuner and amp unit (TAU) terminal 2K-Rear door speaker (RH) terminal B
  • Short to power supply in wiring harness between the following terminals:
    • Tuner and amp unit (TAU) terminal 2M-Rear door speaker (RH) terminal C
      • Tuner and amp unit (TAU) terminal 2K-Rear door speaker (RH) terminal B
  • Rear door speaker (RH) malfunction
  • Tuner and amp unit (TAU) malfunction
G11435276