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 ...
Diagnosis system [abs actuator
and electric unit (control unit)]
CONSULT Function (ABS)
APPLICATION ITEMS
CONSULT can display each diagnostic item using the following direct
diagnostic modes.
ECU IDENTIFICATION
ABS actuator and electric unit (control unit) part number is displayed.
SELF DIAGNOSTIC RESULT
Operation Procedure
Before p ...
EPS System
EPS SYSTEM : System Description
EPS control unit performs an arithmetical operation on data, such as
steering wheel turning force (sensor
signal) from the torque sensor, vehicle speed signal, etc. Then it generates
an optimum assist torque signal
to the EPS motor according to the drivi ...