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DTC B152B:02 [BODY CONTROL MODULE (BCM)]

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Outline

System malfunction location	Half latch switch circuit malfunction
Detection condition	•  The power liftgate (PLG) control module detects that the half latch switch is in the off condition and does not change even though the power liftgate (PLG) drive unit motor rotation speed exceeds 10 times. Preconditions •  The power liftgate (PLG) system is operating.
Fail-safe	•  Stops the power liftgate (PLG) system operation.
Possible cause	•  Liftgate latch and lock actuator connector or terminal malfunction •  Open circuit in liftgate latch and lock actuator ground circuit •  Power liftgate (PLG) control module connector or terminal malfunction •  Short to ground in half latch switch signal circuit •  Short to power supply in half latch switch signal circuit •  Open circuit in half latch switch signal circuit •  Half latch switch malfunction •  Power liftgate (PLG) control module malfunction •  Body control module (BCM) malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	INSPECT LIFTGATE LATCH AND LOCK ACTUATOR CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
2	INSPECT LIFTGATE LATCH AND LOCK ACTUATOR GROUND CIRCUIT FOR OPEN CIRCUIT •  Inspect the applicable circuit for an open circuit. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT POWER LIFTGATE (PLG) CONTROL MODULE CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT HALF LATCH SWITCH SIGNAL CIRCUIT FOR SHORT TO GROUND •  Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	INSPECT HALF LATCH SWITCH SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY •  Inspect the applicable circuit for a short to power supply. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT HALF LATCH SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT •  Inspect the applicable circuit for an open circuit. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification.
7	INSPECT HALF LATCH SWITCH FOR MALFUNCTION •  Inspect the applicable part. (See LIFTGATE LATCH AND LOCK ACTUATOR INSPECTION.) •  Is the part normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See LIFTGATE LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
8	INSPECT POWER LIFTGATE (PLG) CONTROL MODULE 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.) •  Operate the power liftgate (PLG) system. •  Perform the DTC inspection for the body control module (BCM). (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 power liftgate (PLG) control module and perform the repair completion verification. (See POWER LIFTGATE (PLG) CONTROL MODULE 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.) •  Operate the power liftgate (PLG) system. •  Perform the DTC inspection for the body control module (BCM). (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.