Diagnosis Procedure
- CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1
- Turn ignition switch OFF.
- Check signal between BCM harness connector and ground using an oscilloscope.SIGNAL REFERENCE CHART
(+) (-) Condition Signal (Reference value) BCM Connector Terminal M122 Driver side 76, 77 Ground Request switch is pushed When Intelligent Key is in the antenna detection area. Passenger side 74, 75 M121 Back door 38, 39 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 2.
- CHECK OUTSIDE KEY ANTENNA CIRCUIT
- Disconnect BCM connector and malfunctioning front outside key antenna connector or outside key antenna (rear bumper) connector.
- Check continuity between BCM harness connector and malfunctioning outside key antenna harness connector.CONTINUITY REFERENCE CHART
BCM Outside key antenna Continuity Connector Terminal Connector Terminal M122 76 D14 (driver side) 2 Existed 77 1 74 D44 (passenger side) 2 75 1 M121 38 D118 (back door) 2 39 1 - Check continuity between BCM harness connector and ground.CONTINUITY REFERENCE CHART
BCM Ground Continuity Connector Terminal M122 74 Not existed 75 76 77 M121 38 39 Is the inspection result normal?
YES: GO TO 3.
NO: Repair or replace harness.
- CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2
- Replace malfunctioning outside key antenna. (New antenna or other antenna)
- Connect BCM connector and malfunctioning outside key antenna (New antenna or other antenna) connector.
- Check signal between BCM harness connector and ground using an oscilloscope.SIGNAL REFERENCE CHART
(+) (-) Condition Signal (Reference value) BCM Connector Terminal M122 Driver side 76, 77 Ground Door request switch is pushed When Intelligent Key is in the antenna detection area. Passenger side 74, 75 M121 Rear bumper 38, 39 When Intelligent Key is not in the antenna detection area. Is the inspection result normal?
YES-1: Replace malfunctioning front outside handle (LH or RH). Refer to "OUTSIDE HANDLE : REMOVAL AND INSTALLATION ".
YES-2: Replace outside key antenna (Back door). Refer to "BACK DOOR : REMOVAL AND INSTALLATION ".
NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".