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B1D79 Mercury Code - Microphone Input Circuit General Electrical Failure

- Code Popularity: 532 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1D79 Mercury?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Microphone
  • Microphone harness is open or shorted
  • Microphone circuit poor electrical connection
  • Faulty Audio Control Module (ACM) (if equipped)
  • Faulty Accessory Protocol Interface Module (APIM) (if equipped)
⚠ Does your Mercury have Safety Recalls? → Check here

How to Fix the DTC B1D79 Mercury?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for B1D79 Mercury Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1D79 Mercury code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B1D79 Mercury Description

When the VOICE switch is pressed, it changes a reference voltage signal, and the audio system enters voice recognition mode. The VOICE switch is wired to the Audio Control Module (ACM). The Accessory Protocol Interface Module (APIM) receives the microphone input and also broadcasts it to the ACM. The first voice commands spoken determine which system handles the voice commands.
The microphone test is available through the ACM self-diagnostic mode (navigation only). Running this test causes the ACM to produce a test tone. If the system is operating correctly, the microphone detects the tone and produces a signal to the ACM indicating the tone was heard. The OBDII set by the ACM during the microphone test when it does not receive an adequate signal from the microphone when the test tone is sounded.

OBDII Code B1D79 Mercury - Microphone Input Circuit General Electrical Failure - AutoCodes.com
B1D79 Mercury Code - Microphone Input Circuit General Electrical Failure

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Code B1D79 Mercury comments

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