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Home >> Mazda >> 2013 >> 5 Grand Touring >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Symptom Troubleshooting [Entire Audio System] >> No.7 ALC Function Is Inoperative [Entire Audio System] >> Diagnostic Procedure

Diagnostic Procedure

STEP INSPECTION ACTION
1
  • Turn the ALC function to ON.
  • Inspect the ALC function operation when driving the vehicle at ALC level 3.
  • Does the ALC system operate properly?
 Yes The system is normal. Explains the ALC function to the customer.
No Go to the next step.
2
  • Retrieve the DTCs from all vehicle modules using the M-MDS.
  • Is there the following DTC displayed?
    • Vehicle speed signal wiring harness
    • CAN signal wiring harness
 Yes Go to the appropriate DTC inspection.
No Replace the audio unit.
(See AUDIO UNIT REMOVAL/INSTALLATION .)
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