Mazdamanuals.com

DTC B14FF:00 [VEHICLE CONTROL MODULE]

id1502c5049800

Outline

System malfunction location	Driver monitoring camera unit internal temperature abnormality
Detection condition	•  The vehicle control module (VCM) detects that the driver monitoring camera unit internal temperature is lower than −40 °C {−40 °F} for 15 s.
Fail-safe	(See DTC TABLE [VEHICLE CONTROL MODULE (E)].)
Possible cause	•  Decrease in driver monitoring camera unit internal temperature •  Driver monitoring camera unit malfunction •  Driver monitoring camera malfunction (built into center display) •  Vehicle control module (VCM) malfunction (built into body control module (BCM))
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

Step	Inspection	Results	Action
1	INSPECT VEHICLE CONTROL MODULE (VCM) AND BODY CONTROL MODULE (BCM) FOR MALFUNCTION •  Perform the DTC inspection for the vehicle control module (VCM) and the body control module (BCM). (See DTC INSPECTION.) •  Is a DTC related to an internal malfunction displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [VEHICLE CONTROL MODULE (E)].) (See DTC TABLE [BODY CONTROL MODULE (BCM) (E)].)
		No	Go to the next step.
2	INSPECT DRIVER MONITORING CAMERA UNIT FOR MALFUNCTION •  Perform the DTC inspection for the driver monitoring camera unit. (See DTC INSPECTION.) •  Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [DRIVER MONITORING CAMERA UNIT (E)].)
		No	Go to the next step.
3	VERIFY IF DRIVER MONITORING CAMERA UNIT FUNCTION IS STOPPED DUE TO DECREASE IN INTERNAL TEMPERATURE •  Start the engine and move the vehicle to a warm place. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Go to the next step.
		No	Explain to the customer that the driver monitoring camera unit function stopped due to a decrease in the internal temperature of the driver monitoring camera unit, and then go to repair completion verification 2.
4	INSPECT DRIVER MONITORING CAMERA UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the driver monitoring camera unit and perform the repair completion verification. (See DRIVER MONITORING CAMERA UNIT REMOVAL/INSTALLATION [(E)].)
		No	Go to repair completion verification 2.
5	INSPECT DRIVER MONITORING CAMERA FOR MALFUNCTION DEPENDING ON REPEATABILITY •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the center display and perform the repair completion verification. (See CENTER DISPLAY REMOVAL/INSTALLATION.)
		No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION.) •  Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction recurs, replace the body control module (BCM), then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)
		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTC IS DISPLAYED •  Perform the DTC inspection. (See DTC INSPECTION.) •  Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
		No	DTC troubleshooting completed.