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 ...
Brakes
If the brakes do not operate properly, have the
brakes checked. It is recommended that you visit
a NISSAN dealer for this service.
Self-adjusting brakes
Your vehicle is equipped with self-adjusting
brakes.
The front disc-type brakes self-adjust every time
the brake pedal is applied. The rea ...
P0974 Shift solenoid A
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0974
Shift Solenoid "A" Control Circuit
High
The following diagnosis conditions
are met, and the TCM select
switch ON-OFF solenoid
valve monitor value is OF ...