Diagnosis Procedure
- CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1
- Turn Ignition Switch OFF.
- Check signal between BCM harness connector and ground using oscilloscope.
(+)
(-)
Condition
Signal
(Reference value)
BCM
Connector
Terminal
M123
78
79
Ground
When the driver door request switch is operated with Ignition Switch OFF
When Intelligent Key is in the antenna detection area
(distance between Intelligent Key and antenna: 80 cm or less)
When Intelligent Key is not in the antenna detection area
(distance between Intelligent Key and antenna: Approx. 2 m)
Is the inspection result normal?
YES
Replace BCM. Refer to Removal and Installation .
NO
GO TO 2.
- CHECK OUTSIDE KEY ANTENNA CIRCUIT
- Disconnect BCM connector and outside key antenna (rear bumper) connector.
- Check continuity between BCM harness connector and outside key antenna (rear bumper) harness connector.
BCM
Outside key antenna (rear bumper)
Continuity
Connector
Terminal
Connector
Terminal
M123
82
B63
1
Existed
83
2
- Check continuity between BCM harness connector and ground.
BCM
Ground
Continuity
Connector
Terminal
M123
82
Not existed
83
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace harness.
- CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2
- Replace outside key antenna (rear bumper). (New antenna or other antenna)
- Connect BCM and outside key antenna (rear bumper) connector.
- Check signal between BCM harness connector and ground using oscilloscope.
(+)
(-)
Condition
Signal
(Reference value)
BCM
Connector
Terminal
M123
78
79
Ground
When the driver door request switch is operated with Ignition Switch OFF
When Intelligent Key is in the antenna detection area
(distance between Intelligent Key and antenna: 80 cm or less)
When Intelligent Key is not in the antenna detection area
(distance between Intelligent Key and antenna: Approx. 2 m)
Is the inspection result normal?
YES
Replace outside key antenna (rear bumper).
NO
Replace BCM. Refer to Removal and Installation .