Microphone Input Circuit General Electrical Failure
Table of contents
B1A16 LINCOLN Possible 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)
How do I fix code B1A16 LINCOLN?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the B1A16 LINCOLN code
The cost of diagnosing the B1A16 LINCOLN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1A16 LINCOLN 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 APIM during the on-demand self-test if it does not detect the microphone.