Diagnosis Procedure
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to WIRING DIAGRAM .
- CHECK INSIDE 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 M20 100, 99 Ground When Intelligent Key is in the antenna detection area When Intelligent Key is not in the antenna detection area
Is the inspection result normal?
YES
Replace BCM. Refer to REMOVAL AND INSTALLATION .
NO
GO TO STEP 2 .
- CHECK INSIDE KEY ANTENNA CIRCUIT
- Disconnect BCM connector and inside key antenna (luggage room) connector.
- Check continuity between BCM harness connector and inside key antenna (luggage room) harness connector.
BCM Inside key antenna (luggage room) Continuity Connector Terminal Connector Terminal M20 100 B76 1 Yes 99 2 - Check continuity between BCM harness connector and ground.
BCM Ground Continuity Connector Terminal M20 100 No 99
Is the inspection result normal?
YES
GO TO STEP 3 .
NO
Repair or replace harness.
- CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2
- Replace inside key antenna (luggage room). (New antenna or other antenna)
- Connect BCM connector and inside key antenna (luggage room) connector.
- Check signal between BCM harness connector and ground using oscilloscope.
(+) (-) Condition Signal
(Reference value)BCM Connector Terminal M20 100, 99 Ground When Intelligent Key is in the antenna detection area When Intelligent Key is not in the antenna detection area
Is the inspection result normal?
YES
Replace inside key antenna (luggage room). Refer to REMOVAL AND INSTALLATION .
NO
Replace BCM. Refer to REMOVAL AND INSTALLATION .