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 CAN communication bus. Each ECU informs the other ECUs that it is connected to the network by outputting a specified signal (periodic signal) to the CAN communication bus on a regular schedule. 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.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2624

Vehicles Speed Malfunction

Either condition is met:

  • The auto away function is disabled with the last vehicle speed signal* at 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
Tip:

*: 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 OTHER DTC OUTPUT

    1. Check if DTC B2621 is output.

      Click here

      Result

      Result

      Proceed to

      DTC B2621 is not output

      A

      DTC B2621 is output

      B

      Body Electrical > Tilt&Telescopic > Trouble Codes

    B

    REPAIR CIRCUIT INDICATED BY OUTPUT CODE

    Click here

    A

  2. READ VALUE USING INTELLIGENT TESTER (FREEZE SPEED INFO)

    1. Use the Data List to check if the speed signal is functioning properly.

      Body Electrical > Tilt&Telescopic > Data List

      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
      Tip:

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

    A

    REPLACE MULTIPLEX TILT AND TELESCOPIC ECU

    Click here

    B

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

    Click here