CAN Communication System

NETWORKING: CAN COMMUNICATION 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 CAN communication bus, each ECU informs the other ECUs that it is connected to the network by outputting a specified signal (periodic signal) onto the CAN communication bus on a regular schedule. The multiplex tilt and telescopic ECU detects the connection of each ECU based on the signal.





WIRING DIAGRAM









INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

(a) Check for DTCs Diagnosis System.

Result





HINT
When DTC B2621 and U1115 and/or U1002 are output simultaneously, perform the troubleshooting for DTC U1115 and/or U1002 first.

B -- GO TO DIAGNOSTIC TROUBLE CODE CHART CAN Communication System

A -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Removal