B2789

DOOR LOCK: SMART KEY SYSTEM: B2789: No Response from ID BOX

DTC B2789 - No Response from ID BOX

DESCRIPTION





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. RECONFIRM DTC
(a) Clear the DTC and repeat the procedure to re-check it Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC is not output.
OK -- END (SYSTEM IS NORMAL)

NG -- Continue to next step.

2. CHECK WIRE HARNESS (CERTIFICATION ECU - ID CODE BOX)





(a) Disconnect the D39 ECU connector.





(b) Disconnect the D29 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. REPLACE CERTIFICATION ECU (CHECK OPERATION OF CERTIFICATION ECU)
(a) Replace the certification ECU.
(b) Clear the DTC and repeat the procedure to re-check it Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC is not output.
OK -- END (CERTIFICATION ECU IS DEFECTIVE)

NG -- REPLACE ID CODE BOX