P1722

P1722 VEHICLE SPEED





Description
The vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) to TCM by CAN communication line.




CONSULT-III Reference Value









On Board Diagnosis Logic
- This is not an OBD-II self-diagnostic item.
- Diagnostic trouble code "P1722" with CONSULT-III is detected when TCM does not receive the proper vehicle speed signal (input by CAN communication) from ABS actuator and electric unit (control unit).




Possible Cause
- Harness or connectors
(Sensor circuit is open or shorted.)
- ABS actuator and electric unit (control unit)




DTC Confirmation Procedure

CAUTION:
Always drive vehicle at a safe speed.

NOTE:
If "DTC Confirmation Procedure" has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.
After the repair, touch "ERASE" on "SELF-DIAG RESULTS" and then perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-III
1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
3. Start engine and maintain the following conditions for at least 5 consecutive seconds.
ACC PEDAL OPEN: 1.0/8 or less
VEHICLE SPEED SE: 30 km/h (19 MPH) or more
4. If DTC is detected, go to SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis check. CVT Trouble Diagnosis.
Is any malfunction of the "U1000" indicated?
YES - Check CAN communication line. CVT CVT CVT CVT.
NO - GO TO 2.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform ABS actuator and electric unit (control unit) self-diagnosis check. CONSULT-III Function (ABS), "CONSULT-III
Function (ABS)".
OK or NG
OK - GO TO 3.
NG - Repair or replace damaged parts.
3.CHECK INPUT SIGNALS
With CONSULT-III
1. Start engine.
2. Select "SELECTION FROM MENU" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
3. Drive vehicle and read out the value of "VEHICLE SPEED" and "ESTM VSP SIG".






4. Check if there is a great difference between the two values.
OK or NG
OK - GO TO 5.
NG - GO TO 4.
4.CHECK TCM
Check TCM input/output signals. CVT Trouble Diagnosis.
OK or NG
OK - GO TO 5.
NG - Repair or replace damaged parts.
5.CHECK DTC
Perform SEE DTC Confirmation Procedure.
OK or NG
OK - INSPECTION END
NG - GO TO 2.