B2621

STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: B2621: Communication Interruption
B2621 - Communication Interruption

DESCRIPTION

The multiplex tilt and telescopic ECU forms a network with the ECUs of other systems through the communication bus. Each ECU informs the other ECUs that they are connected to the network by outputting a specified signal (periodical signal) to the communication bus at a regular schedule. The multiplex tilt and telescopic ECU detects the connection of each ECU based on the signal.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC (CAN COMMUNICATION SYSTEM)

(a) Check the DTC of the CAN communication system CAN Communication System.

Result:





B -- GO TO CAN COMMUNICATION SYSTEM CAN Communication System
A -- Continue to next step.

2. READ VALUE USING TECHSTREAM (MAIN BODY ECU COMMUNICATION SIGNAL)

(a) Use the Data List to check if the main body ECU communication signal is functioning properly.

Tilt & Telescopic:





OK:

"OK" is displayed.

NG -- REPLACE MAIN BODY ECU
OK -- Continue to next step.

3. READ VALUE USING TECHSTREAM (DRIVER SEAT ECU COMMUNICATION SIGNAL)

(a) Use the Data List to check if the driver seat ECU communication signal is functioning properly.

Tilt & Telescopic:





OK:

"OK" is displayed.

NG -- REPLACE FRONT POWER SEAT SWITCH (POSITION CONTROL ECU) Disassembly
OK -- Continue to next step.

4. READ VALUE USING TECHSTREAM (COMBINATION METER ECU COMMUNICATION SIGNAL)

(a) Use the Data List to check if the combination meter ECU communication signal is functioning properly.

Tilt & Telescopic:





OK:

"OK" is displayed.

NG -- REPLACE COMBINATION METER ASSEMBLY (COMBINATION METER ECU) Removal

OK -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Removal