C1729

C1729 VEHICLE SPEED SIG ERR





Description
Uses CAN communications from the ABS actuator and electric unit (control unit) to receive the vehicle speed signal, and activates the Tire Pressure Monitoring System (TPMS) when the vehicle speed is 40 km/h
(25MPH) or more.




DTC Logic

DTC logic






DTC REPRODUCTION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
With CONSULT-III
1. Drive for several minutes at a speed of 40 km/h (25MPH) or more, then stop the vehicle.
2. Perform "AIR PRESSURE MONITOR self-diagnosis".
Is DTC "C1729" detected?
YES - Perform trouble diagnosis. C1729.
NO - INSPECTION END




Diagnosis Procedure
1.PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-III
Perform "ABS" self-diagnosis.
Is DTC detected?
YES - Check malfunctioning circuit.
NO - GO TO 2.
2.PERFORM THE SELF-DIAGNOSIS
With CONSULT-III
Perform "AIR PRESSURE MONITOR" self-diagnosis.
Is DTC "C1729" detected?
YES - Replace the low tire pressure warning control unit.
NO - GO TO 3.
3.CHECK INFORMATION
With CONSULT-III
Select "DATA MONITOR" of "AIR PRESSURE MONITOR" and check the input/output values. Testing and Inspection.
Is the inspection result normal?
YES - Check pin terminal and connection of each harness connector for malfunctioning conditions.
NO - Replace the low tire pressure warning control unit.