1.CHECK INSIDE 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
   Trunk room | M121 | 34, 35 | Ground | When Intelligent Key is in the passenger compartment. |
   When Intelligent Key is not in the passenger compartment. |

Is the inspection result normal?
YES>>GO TO 4.
NO>>GO TO 2.
2.CHECK INSIDE KEY ANTENNA CIRCUIT

1. Disconnect BCM connector and inside key antenna (trunk room) connector.
2. Check continuity between BCM harness connector and inside key antenna (trunk room) harness connector.

   BCM | Inside key antenna (trunk room) | Continuity
   Connector | Terminal | Connector | Terminal
   M121 | 34 | B41 | 2 | Existed
   35 | 1

3. Check continuity between BCM harness connector and ground.

   BCM | Ground | Continuity
   Connector | Terminal
   M121 | 34 | Not existed
   35

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

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

   (+) | (–) | Condition | Signal (Reference value)
   BCM
   Connector | Terminal
   Trunk room | M121 | 34, 35 | Ground | When Intelligent Key is in the passenger compartment. |
   When Intelligent Key is not in the passenger compartment. |

Is the inspection result normal?
YES>>Replace inside key antenna (trunk room). Refer to Removal and Installation.
NO>>Replace BCM. Refer to Removal and Installation.
4.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END