B2624

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

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 communication bus on a regular basis. The multiplex tilt and telescopic ECU receives vehicle speed signals from the combination meter via the CAN 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 (CAN COMMUNICATION SYSTEM)

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

Result:





HINT
DTC B2621 indicates a combination meter communication stop malfunction in the CAN communication system.

B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

2. READ VALUE USING TECHSTREAM (FREEZE SPEED INFO)

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Turn the Techstream on.

(e) Check the vehicle speed signal on the Techstream. Enter the following menus: Body Electrical / Tilt & Telescopic / Data List.

Tilt & Telescopic





Result:





HINT
Vehicle speed of 3 km/h (2 mph) or more may be displayed on the Techstream immediately after the vehicle comes to a sudden stop. This is caused by a delay in vehicle signal input via the CAN 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 Removal