NO.5 NO CREEP AT ALL [AY6A-EL, AY6AX-EL]

id0503k3801000

5
No creep at all
DESCRIPTION
•  Vehicle does not move in D and R position when idling on a flat paved road.
POSSIBLE CAUSE
•  Either engine output low or there is clutch slippage.
―  Clutch burnt (C1 clutch, C3 clutch)
•  Line pressure low
•  Shift solenoid C malfunction
•  Shift solenoid D malfunction
•  Shift solenoid E malfunction
•  Line pressure control solenoid malfunction
•  Shift solenoid F malfunction
•  Body ground malfunction
•  Control valve body malfunction
―  Transaxle fixed in 3GR or 5GR* (Operation of fail-safe function)
•  Short or open circuit in wiring harness
•  Poor connection of connector
•  Malfunction of electronic parts of output and input system
―  There is no engine torque
•  Torque converter malfunction
Note
•  Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See BASIC INSPECTION [AY6A-EL, AY6AX-EL].)

Diagnostic procedure

STEP

INSPECTION

ACTION
1
•  Does the vehicle creep in P and/or N position?
Yes
Inspect or adjust the selector lever.
(See SELECTOR LEVER INSPECTION.)
(See SELECTOR CABLE ADJUSTMENT.)
No
Go to the next step.
2
•  Stop the engine.
•  Inspect following solenoid.
―  Shift solenoid C
―  Shift solenoid D
―  Shift solenoid E
―  Shift solenoid F
―  Line pressure control solenoid
•  Are these solenoids normal?
Yes
Go to the next step.
No
Inspect the coupler component.
If normal, replace the control valve body.
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
3
•  Perform the stall test.
•  Is the stall speed within the specified?
Yes
Inspect the ATF condition.
If large amount of metal specks are found, replace the transaxle.
(See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
If a large amount of metal specks are not found, replace the control valve body.
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
No
Replace the torque converter.
(See TORQUE CONVERTER REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
4
•  Verify test results.
―  If normal, return to the diagnostic index to service any additional symptoms.
―  If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
•  If the vehicle is repaired, troubleshooting completed.
•  If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.

*  :If case of shift solenoid C failure