B1C11 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1C11 – Driver Active Headrest Control Circuit

 

B1C11 Possible Symptoms

 

Air Bag Warning Light ON

 

B1C11 Possible Causes

 

Faulty Driver Active Headrest,Driver Active Headrest harness is open or shorted,Driver Active Headrest circuit poor electrical connection,Fault Occupant Restraint Controller (ORC)

 

B1C11 Description

 

The Driver Active Headrest signal circuit is driven by a solenoid that also uses a diode in parallel. The single electrical component of the Active Headrest (AHR) unit is the latch-release solenoid. The solenoid is connected by a 2 way pigtail wire and harness connector. The pigtail wire and 2 way connector are routed through the center of one of the headrest support posts and down through the guide sleeve to the interior of the seat back, where it connects to the seat wire harness. The solenoid is grounded at an independent dedicated ground. The AHR components itself cannot be repaired. If damaged or ineffective, the AHR must be replaced as a new assembly. If upon inspection the AHR has deployed it can be reset following the proper reset method. Also if the already deployed Driver or Passenger AHR are latched in the locked position please see the scan tool miscellaneous functions to set the latch in the unlock or deployed position. The Occupant Restraint Controller (ORC) monitors the Driver Active Headrest during the start up phase of the ORC module. The Driver Active Headrest communication and on board diagnostics are powered by the ORC signal.