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 & telescopic steering column normally.

OK:

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

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

OK -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU

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 voltage:





Standard resistance:





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

3. CHECK RESISTANCE OF COMMUNICATION LINE





(a) Disconnect the K27 and K66 ECU connectors.

(b) Disconnect the DA junction block connector.

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

Standard resistance:





Result:





C -- REPAIR OR REPLACE HARNESS AND CONNECTOR

B -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU AND WIRE HARNESS CONNECTOR
A -- Continue to next step.

4. INSPECT COWL SIDE JUNCTION BLOCK RH





(a) Disconnect the DA junction block connector.

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

Standard resistance:





NG -- REPLACE COWL SIDE JUNCTION BLOCK

OK -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU