B2624

STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: B2624: Vehicles Speed Malfunction

DTC B2624 - Vehicles Speed Malfunction

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 (periodic signal) to the communication bus at a regular basis. The multiplex tilt and telescopic ECU receives vehicle speed signals from the combination meter via the communication bus to prevent improper operation of the auto away/return function during driving.





HINT: *: If the power switch is turned OFF immediately after the vehicle comes to a sudden stop, the last vehicle speed signal may not be 0 km/h (0 mph).

INSPECTION PROCEDURE

PROCEDURE

1. CHECK OTHER DTC OUTPUT
(a) Check if DTC B2621 is output Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPAIR CIRCUIT INDICATED BY OUTPUT CODE
A -- Continue to next step.
2. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (SPEED SIGNAL)
(a) Use the Data List to check if the speed signal is functioning properly.
(1) Intelligent tester

TILT & TELESCO:





(2) Techstream

Tilt & Telescopic:





Result





HINT: Vehicle speed of 3 km/h (2 mph) or more may be displayed on the tester screen immediately after the vehicle comes to a sudden stop. This is caused by a delay in vehicle signal input via the communication bus and is not a malfunction.

B -- GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)
A -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU