Dtc B2624 Vehicles Speed Malfunction


DESCRIPTION

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT

READ VALUE USING INTELLIGENT TESTER (FREEZE SPEED INFO)

DTC 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 Code
Detection Condition
Trouble Area
B2624
Either condition is met:
  1. The auto away function is disabled with the last vehicle speed signal* at 10 km/h (6 mph) or more.
  2. Vehicle speed signal is lost for 5 seconds or more and the auto away/return function is disabled.
  1. CAN communication system
  2. Meter/gauge system
  3. 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

1.CHECK OTHER DTC OUTPUT

  1. Check if DTC B2621 is output (LandCruiser RM000000XZH069X.html).

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



B
REPAIR CIRCUIT INDICATED BY OUTPUT CODE (LandCruiser RM000000XZC06DX.html)
A


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

  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

    HINT:
    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.


B
GO TO METER/GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000002Z4L055X.html)
A

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU (LandCruiser RM0000039SD01GX.html)