POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM, Diagnostic DTC:B2624

DTC Code DTC Name
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.

DTC Code Detection Item Trouble Area
B2624

  • The auto away function is disabled with the last vehicle speed signal* of 10 km/h (6 mph) or more.

  • Vehicle speed signal is lost for 5 seconds or more and the auto away/return function is disabled.

  • CAN communication system

  • Combination meter

  • Multiplex tilt and telescopic ECU

Tech Tips

*: 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).

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check the "COMMUNICATION STOP MODE TABLE" of the CAN communication system Click here.

      Result
      Tester Display Proceed to
      "Meter" is displayed. A
      "Meter" is not displayed. (LHD) B
      "Meter" is not displayed. (RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. READ VALUE USING INTELLIGENT TESTER (SPEED SIGNAL)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG) and turn the intelligent tester on.

    3. Select "Freez Spd Info" from the Data List.

    4. Check the vehicle speed signal on the tester screen.

      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 speedometer → 0 km/h (0 mph)
      Result
      Result Proceed to
      OK A
      NG (Tester indication is abnormal) B
      NG (Meter indication is abnormal) C

      Tech Tips

      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.


    A

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Click here

    B

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Click here

    C

    CHECK COMBINATION METER SYSTEM Click here