DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If "DTC CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.DTC REPRODUCTION PROCEDURE
With CONSULT
Is DTC "C1604" detected?
YES >> Proceed to diagnosis procedure. Refer to STC "Diagnosis Procedure".
NO >> Inspection End.
Regarding Wiring Diagram information, refer to STC "Wiring Diagram".
1.CHECK TORQUE SENSOR POWER SUPPLY CIRCUIT
CAUTION: Never start the engine.
CAUTION:
Steering wheel in neutral position. (There is no steering force.)
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform the trouble diagnosis for battery power supply circuit. Refer to STC "Diagnosis Procedure".
2.CHECK TORQUE SENSOR GROUND CIRCUIT
CAUTION:
Steering wheel in neutral position. (There is no steering force.)
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK TORQUE SENSOR SIGNAL
CAUTION:
Steering wheel in neutral position. (There is no steering force.)
Is the inspection result normal?
YES >> GO TO 4.
NO >> Torque sensor is malfunctioning. Replace steering column assembly. Refer to ST "Removal and Installation".
4.CHECK CONNECTOR
Is the inspection result normal?
YES >> Replace EPS control unit. Refer to STC "Removal and Installation".
NO >> Repair or replace malfunctioning component.
Line pressure control
Line pressure control : system diagram
Line pressure control : system description
When an engine and A/T integrated control signal (engine torque)
equivalent to the engine drive force is
transmitted from the ECM to the TCM, the TCM controls the line pressure
solenoid valve.
Th ...
P0973 Shift solenoid A
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0973
Shift Solenoid "A" Control Circuit
Low
The following diagnosis conditions
are met, and the TCM select
switch ON-OFF solenoid
valve monitor value is ON c ...