Description
This malfunction is detected when the torque converter clutch does not lock-up as instructed by the TCM. This is not only caused by electrical malfunction (circuits open or shorted), but also by mechanical malfunction such as control valve sticking, improper solenoid valve operation, etc.
DTC Logic
DTC DETECTION LOGIC
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.
Then wait at least 10 seconds before performing the next test. 1.CHECK DTC DETECTION
With CONSULT-III
Turn ignition switch ON.
Select "DATA MONITOR".
Start engine and maintain the following condition for at least 30 seconds.
ACC PEDAL OPEN : More than 1.0/8
RANGE : "D" position
VEHICLE SPEED : Constant speed of more than 40 km/h (25 MPH)
Check torque converter clutch solenoid valve. Refer to Component Inspection (Torque Converter Clutch Solenoid Valve). Is the Inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts. 3.CHECK LOCK-UP SELECT SOLENOID VALVE
Check lock-up select solenoid valve. Refer to Component Inspection (Lock-up Select Solenoid Valve).
Is the Inspection result normal?
YES >> GO TO 4.
NO >> Replace transaxle assembly. Refer to See: Transmission and Drivetrain\Continuously Variable Transmission/Transaxle\Service and Repair\CVT RE0F10A\Transaxle Assembly\Exploded View. 4.CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM
Check output speed sensor (secondary speed sensor) system. Refer to See: P0720\CVT RE0F10A.
Is the Inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace damaged parts. 5.CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM
Check input speed sensor (primary speed sensor) system. Refer to See: P0715\CVT RE0F10A.
Is the Inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace damaged parts. 6.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the Inspection result normal?
YES >> Replace TCM. Refer to See: Powertrain Management\Transmission Control Systems\Control Module, CVT\Service and Repair\CVT RE0F10A\Exploded View.
NO >> Repair or replace damaged parts.