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Last Modified: 11-27-2007 1.6 C
Service Category: Steering Section: Steering Column
Model Year: 2008 Model: LX570 Doc ID: RM000000ZDY017X
Title: STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: DESCRIPTION (2008 LX570)

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 it is connected to the network by outputting a specified signal (periodic signal) to the communication bus on a regular schedule. 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.

DTC Code

Detection Condition

Trouble Area

B2624
  • The auto away function is disabled with the last vehicle speed signal* at 10 km/h (6 mph) or more.
  • The vehicle speed signal is lost for 5 seconds or more and the auto away/return function is disabled.
  • CAN communication system
  • Meter/gauge system
  • Multiplex tilt and telescopic ECU

HINT:

*: If the engine 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 CAN COMMUNICATION SYSTEM

(a) Check the Communication Stop Mode Table of the CAN communication system NETWORKING: CAN COMMUNICATION SYSTEM: SYSTEM DESCRIPTION (2008 LX570) .

Result

Result

Proceed to

"Meter" is displayed.

A

"Meter" is not displayed.

B
A

2.

READ VALUE USING TECHSTREAM (SPEED SIGNAL)

(a) Use the Data List to check if the speed signal is functioning properly.

Tilt & Telescopic

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Freeze Speed Info

Vehicle speed data/min.: 0 km/h (0 mph), max.: 255 km/h (158 mph)

Stop → Drive → Stop

0 km/h (0 mph) → Same speed as indicated on the speedometer → 0 km/h (0 mph)

Result

Result

Proceed to

OK

A

NG (Tester indication is abnormal)

B

NG (Meter indication is abnormal)

C

HINT:

A vehicle speed of 3 km/h (2 mph) or more may be displayed on the Techstream 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.

A