Mitsubishi Outlander (2003+). Manual - part 202
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-103
INSPECTION PROCEDURE 3: Does not move forward
COMMENTS ON TROUBLE SYMPTOM
If the vehicle does not move forward when the
selector lever is shifted sport mode 1, or 2 range
while the engine is idling, the cause is probably
abnormal line pressure or a malfunction of the
underdrive clutch or valve body.
POSSIBLE CAUSES
•
Malfunction of underdrive solenoid valve
•
Malfunction of inhibitor switch
•
Abnormal line pressure
•
Malfunction of the underdrive clutch
•
Malfunction of valve body
•
Malfunction of the engine-A/T-ECU
DIAGNOSIS
STEP 1. MUT-II/III actuator test
Item 02: Underdrive solenoid valve
OK: Operating sound can be heard.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the underdrive solenoid valve.
STEP 2. MUT-II/III diagnosis code
Either of diagnosis codes 27 or 28 is set, inhibtor
switch is defective.
Q: Are diagnosis codes 27 or 28 output?
YES <diagnosis code 27 is set> :
Refer to
diagnosis code 27: Inhibitor switch system
YES <diagnosis code 28 is set> :
Refer to
diagnosis code 28: Inhibitor switch system
NO :
Go to Step 3.
STEP 3. Underdrive solenoid valve check
(1) Turn the ignition switch to the ON position.
(2) Shift the selector lever from N to D range.
(3) Confirm the operating sound of the underdrive
solenoid valve.
OK: Operating sound can be heard.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Replace the engine-A/T-ECU.
STEP 4. Hydraulic pressure test
Measure the hydraulic pressure of the underdrive
clutch when the selector lever is at the L range
(Refer to
OK: Refer to
.
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 5.
STEP 5. Engine-A/T-ECU replacement
(1) Replace the engine-A/T-ECU.
(2) Test drive the vehicle.
(3) Verify that the condition described by the
customer exists.
Q: Does a malfunction take place again?
YES :
Go to Step 6.
NO :
The inspection is complete.
STEP 6. Valve body disassembly clean and
assembly
(1) Check the bolts for looseness and the O-ring,
solenoid valve and valve body for damage.
Replace the valve body assembly if the damages
are thought to be irreparable.
(2) Test drive the vehicle.
(3) Verify that the condition described by the
customer exists.
Q: Does a malfunction take place again?
YES :
Go to Step 7.
NO :
The inspection is complete.
STEP 7. Underdrive clutch check
(1) Check the facing for seizure and the piston seal
ring for damage and interference with the
retainer.
(2) Test drive the vehicle.
(3) Verify that the condition described by the
customer exists.
Q: Is the check result normal?
YES :
The inspection is complete.
NO :
Repair or replace the underdrive clutch.