B1213

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1213: Tilt and Telescopic ECU Communication Stop
B1213 - Tilt and Telescopic ECU Communication Stop

DESCRIPTION

* This DTC is detected when communication between the multiplex tilt and telescopic ECU and the network gateway ECU stops for more than 10 seconds.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK OPERATION

(a) Check that the power tilt and telescopic switch can operate the tilt and telescopic steering column normally.

OK:

Power tilt and telescopic switch can operate tilt and telescopic steering column normally.

OK -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU
NG -- Continue to next step.

2. CHECK WIRE HARNESS (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY AND BODY GROUND)





(a) Disconnect the K27 ECU connector.

(b) Measure the resistance and voltage of the wire harness side connector.

Standard resistance:

Standard voltage










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

3. CHECK RESISTANCE OF COMMUNICATION LINE





(a) Disconnect the DA, K27 and K66 ECU connectors.

(b) Measure the resistance of the wire harness side connectors.

Standard resistance:





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

4. INSPECT MAIN BODY ECU RH





(a) Disconnect the DA ECU connector.

(b) Measure the resistance of the ECU.

Standard resistance:





NG -- REPLACE MAIN BODY ECU RH

OK -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU