B2628

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON.
2.Check "Self Diagnostic Result" mode of "BCM" using CONSULT.
Is DTC detected?
YES- .
NO- Inside key antenna (rear bumper) is OK.


Diagnosis Procedure


1. CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1

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





Is the inspection result normal?
YES- Replace BCM. Service and Repair.
NO- GO TO 2.

2. CHECK OUTSIDE KEY ANTENNA CIRCUIT

1.Disconnect BCM connector and outside key antenna (rear bumper) connector.
2.Check continuity between BCM harness connector and outside key antenna (rear bumper) harness connector.





3.Check continuity between BCM harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace harness.

3. CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2

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





Is the inspection result normal?
YES- Replace outside key antenna (rear bumper).
NO- Replace BCM. Service and Repair.