Diagnosis Procedure
1.
CHECK Power liftgate SERIAL COMMUNICATION SIGNAL
Ignition switch ON.
Check signal between BCM harness connector and ground using oscilloscope.
(+)
(–)
Signal
(Reference value)
BCM
Connector
Terminal
B26
83
Ground
Is the inspection result normal?
INSPECTION END
.
2.
CHECK Power liftgate SERIAL COMMUNICATION CIRCUIT
Ignition switch OFF.
Disconnect hands free sensor control unit connector and BCM connector.
Check continuity between hands free sensor control unit harness connector and BCM harness connector.
Hands free sensor control unit
BCM
Continuity
Connector
Terminal
Connector
Terminal
B452
1
B26
83
Existed
Check continuity between hands free sensor control unit harness connector and ground.
Hands free sensor control unit
—
Continuity
Connector
Terminal
B452
1
Ground
Not existed
Is the inspection result normal?
Replace BCM. Refer to
Removal and Installation
.
Repair or replace harness.