1.CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1

1. Turn ignition switch OFF.
2. Check signal between BCM harness connector and ground using oscilloscope.

   (+) | (–) | Condition | Signal (Reference value.)
   BCM
   Connector | Terminal
   Driver side | M122 | 76, 77 | Ground | Door request switch or trunk lid opener request switch is pressed. | When Intelligent Key is in the antenna detection area. |
   Passenger side | 74, 75
   Rear bumper | M121 | 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.
2.CHECK OUTSIDE KEY ANTENNA CIRCUIT

1. Disconnect BCM connector and malfunctioning outside key antenna connector.
2. Check continuity between BCM harness connector and outside key antenna harness connector.

   Outside key antenna | BCM | Continuity
   Connector | Terminal | Connector | Terminal
   Driver side | D24 | 1 | M122 | 77 | Existed
   2 | 76
   Passenger side | D54 | 1 | 75
   2 | 74
   Rear bumper | B60 | 1 | M121 | 39
   2 | 38

3. Check continuity between malfunctioning outside key antenna harness connector and ground.

   Outside key antenna | Ground | Continuity
   Connector | Terminal
   Driver side | D24 | 1 | Not existed
   2
   Passenger side | D54 | 1
   2
   Rear bumper | B60 | 1
   2

Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace harness.
3.CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2

1. Replace malfunctioning outside key antenna. (New antenna or other antenna)
2. Connect BCM connector and outside key antenna connector.
3. Check signal between BCM harness connector and ground using oscilloscope.

   (+) | (–) | Condition | Signal (Reference value.)
   BCM
   Connector | Terminal
   Driver side | M122 | 76, 77 | Ground | Door request switch or trunk lid opener request switch is pressed. | When Intelligent Key is in the antenna detection area. |
   Passenger side | 74, 75
   Rear bumper | M121 | 38, 39 | When Intelligent Key is not in the antenna detection area. |

Is the inspection result normal?
YES>>INSPECTION END
NO>>Replace BCM. Refer to Removal and Installation.