DTC B2624 Vehicles Speed Malfunction
for Preparation Click here
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.
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
1.CHECK OTHER DTC OUTPUT
a. 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)
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
speedometer → 0 km/h (0 mph)
Result
Result Proceed to
Intelligent tester indication is normal A
Intelligent 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 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)
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