Inside Key Antenna Check

INTELLIGENT KEY SYSTEM

Inside Key Antenna Check

NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II
User Guide for additional information.
- Check Intelligent Key relative signal strength
- Confirm vehicle Intelligent Key antenna signal strength

1. CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.Turn ignition switch OFF.
2.Check signal between Intelligent Key unit connector and ground with oscilloscope.











OK or NG
OK- Check the condition of harness and connector.
NG- GO TO 2

2. CHECK INSIDE KEY ANTENNA CIRCUIT

1.Disconnect Intelligent Key unit and inside key antenna connector.
2.Check continuity between Intelligent Key unit connector and inside key antenna connector.











3.Check continuity between Intelligent Key unit connector and ground.





OK or NG
OK- GO TO 3
NG- Repair or replace harness between Intelligent Key unit and inside key antenna.

3. CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2

1.Replace inside key antenna. (New antenna or other antenna)
2.Connect Intelligent Key unit and inside key antenna connector.
3.Check signal between Intelligent Key unit connector and ground with oscilloscope.











OK or NG
OK- Replace malfunction inside key antenna.
NG- Replace Intelligent Key unit. Service and Repair