B2621

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

DTC 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 it is connected to the network by outputting a specified signal (periodical signal) onto the communication bus on a regular schedule. The multiplex tilt and telescopic ECU detects the connection of each ECU based on this signal.






INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING INTELLIGENT TESTER (MULTIPLEX NETWORK BODY ECU)
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position and turn on the intelligent tester.
(c) Select "BODY1 ECU INFO" from the DATA LIST.
(d) Check the signal communication state of the multiplex network body ECU on the tester screen.
Standard:
"OK" is displayed.
NG -- REPLACE MULTIPLEX NETWORK BODY ECU
OK -- Continue to next step.
2. READ VALUE USING INTELLIGENT TESTER (POWER SEAT ECU)
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position and turn on the intelligent tester.
(c) Select "SEAT ECU INFO" from the DATA LIST.
(d) Check the signal communication state of the power seat ECU on the tester screen.
Standard:
"OK" is displayed.
NG -- REPLACE POWER SEAT ECU
OK -- REPLACE MULTIPLEX TILT & TELESCOPIC ECU