Steering Wheel Audio Switch Pack 2
Table of contents
B1201 LINCOLN Possible Causes
- Faulty Steering Wheel Audio Switch Pack 2
- Steering Wheel Audio Switch Pack 2 harness is open or shorted
- Steering Wheel Audio Switch Pack 2 circuit poor electrical connection
- Faulty Audio Control Module (ACM) or Accessory Protocol Interface Module (APIM)
How do I fix code B1201 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.
Tech Notes
- B1201:1C – Steering Wheel Audio Switch Pack 2 Circuit Voltage Out of Range
- B1201:63 – Steering Wheel Audio Switch Pack 2 Circuit/Component Protection Time-Out
Cost of diagnosing the B1201 LINCOLN code
The cost of diagnosing the B1201 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)
B1201 LINCOLN Description
Voltage is sent from the Audio Control Module (ACM) or Accessory Protocol Interface Module (APIM) to the steering wheel controls, and the same module grounds the return circuit. The VOL-, VOL+, SEEK- and SEEK+ switches share signal and return circuits, while the VOICE, MEDIA, PHONE and OK switches share separate signal and return circuits. For all configurations, when a switch is pressed, the voltage is routed through a specific resistor value for each function. The ACM (or APIM) then uses the reference voltage to determine which control input function has been selected. The OBDII code is set by the navigation ACM when the reference voltage to the steering wheel controls is out-of-range. This can be caused by a number of different failures on the steering wheel controls circuit except for a stuck switch or a short to ground in the signal return circuit.