Description
ECM receives two vehicle speed signals via the CAN communication line. One is sent from "ABS actuator and electric unit (control unit)" via combination meter, and the other is from TCM (Transmission control module).
ECM uses these signals for engine control.
DTC DETECTION LOGIC
NOTE:
DTC No. | Trouble diagnosis | DTC detecting condition | Possible cause |
P1720 | Vehicle speed sensor (TCM output) | The difference between two vehicle speed signals is out of the specified range. |
|
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is 1st trip DTC detected?
YES >> Go to EC, "Diagnosis Procedure".
NO >> INSPECTION END
1.CHECK DTC WITH TCM
Check DTC with TCM. Refer to TM, "DTC Index" (A/T models) or TM, "DTC Index" (CVT models).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble shooting relevant to DTC indicated.
2.CHECK DTC WITH "ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)"
Check DTC with "ABS actuator and electric unit (control unit)". Refer to BRC, "DTC Index".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform trouble shooting relevant to DTC indicated.
3.CHECK COMBINATION METER FUNCTION
Check combination meter function. Refer to MWI, "DTC Index" (TYPE A) or MWI, "DTC Index" (TYPE B).
>> INSPECTION END
Description ECM receives input speed sensor signal from TCM via the CAN communication line. ECM uses this signal for engine control. DTC Logic DTC DETECTION LOGIC NOTE: If DTC P1715 is disp ...
If your vehicle overheats
If your vehicle is overheating (indicated by an
extremely high temperature gauge reading (if so
equipped), a red high temperature warning light
(if so equipped) ), or if you feel a
lack of
engine power, detect abnormal noise, etc. take
the following steps.
WARNING
Do not continue to driv ...
Automatic speed control device (ASCD)
Automatic speed control device (ascd) : system diagram
NOTE:
Transmission range switch and TCM is also for A/T models.
Automatic speed control device (ascd) : system description
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Brake pedal ...