Outside Key Antenna Check

INTELLIGENT KEY SYSTEM


Outside Key Antenna Check

1.CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL
1. Turn ignition switch OFF.
2. Check signal between Intelligent Key unit connector M42 terminals 17, 19, 37 and ground with an oscilloscope.











OK or NG
OK - Outside key antenna is OK.
NG - GO TO 2.
2.CHECK OUTSIDE KEY ANTENNA CIRCUIT
1. Disconnect Intelligent Key unit connector and outside key antenna connector.
2. Check continuity between each outside key antenna harness connector D4 (B) (LH) or D103 (B) (RH), rear bumper antenna connector B49 (C) terminals 1, 2 and Intelligent Key unit harness connector M42 (A) terminals 17, 18, 19, 20, 37, and 38.










3. Check continuity between each outside key antenna harness connector terminals 1, 2 and ground.





OK or NG
OK - GO TO 3.
NG - Replace harness between outside key antenna and Intelligent Key unit.
3.CHECK OUTSIDE KEY ANTENNA POWER SUPPLY
1. Replace outside key antenna. (New antenna or other antenna)
2. Connect Intelligent Key unit connector and outside key antenna connector.





3. Check signal between Intelligent Key unit connector terminals
17, 19, 37 and ground with an oscilloscope.






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