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

  • Meter / gauge system

  • Multiplex tilt and telescopic ECU

Tech Tips

*: 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


    1. Check if DTC B2621 is output Click here.

      Result
      Result Proceed to
      B2621 is not output A
      B2621 is output B

    B

    REPAIR CIRCUIT INDICATED BY OUTPUT CODE Click here

    A

  2. READ VALUE USING INTELLIGENT TESTER (SPEED SIGNAL)


    1. 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 speedometer → 0 km/h (0 mph)
      Result
      Result Proceed to
      Tester indication is normal A
      Tester indication is abnormal B

      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.


    B

    GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    A

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Click here