B1269

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1269: Theft Deterrent ECU Communication Stop

DTC B1269 - Theft Deterrent ECU Communication Stop

DESCRIPTION
- DTC B1269 is output when the communication between the theft deterrent ECU and the body ECU stops for more than 10 seconds.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS (BODY ECU - THEFT DETERRENT ECU)
(a) Check the wire harness between the body ECU and theft deterrent ECU.





(1) Disconnect the B6 and T5 connectors.
(2) Measure the resistance of the wire harness side connector.
Standard resistance:





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

2. INSPECT THEFT WARNING ECU ASSEMBLY




(a) Disconnect the T5 connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:





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

3. INSPECT THEFT WARNING ECU ASSEMBLY




(a) Disconnect the T5 connector.
(b) Measure the resistance of the wire harness side connector.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE THEFT WARNING ECU ASSEMBLY