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.
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-104
INSPECTION PROCEDURE 4: Does not move backward
COMMENTS ON TROUBLE SYMPTOM
If the vehicle does not move backward when the
selector lever is shifted to R range while the engine is
idling, the cause is probably abnormal pressure of
the reverse clutch and low-reverse brake or a
malfunction of the reverse clutch, low-reverse brake,
or valve body.
Possible causes
•
Abnormal reverse clutch pressure
•
Abnormal low-reverse brake pressure
•
Malfunction of low-reverse solenoid valve
•
Malfunction of the reverse clutch
•
Malfunction of low-reverse brake
•
Malfunction of valve body
•
Malfunction of the engine-A/T-ECU
DIAGNOSIS
STEP 1. MUT-II/III actuator test
Item 01: Low-reverse solenoid valve
OK: Operating sound can be heard.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the low-reverse solenoid valve.
STEP 2. Hydraulic pressure test
Measure the hydraulic pressure for reverse clutch
and low-reverse brake when the selector lever is at
the R range (Refer to
OK: Refer to
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 3.
STEP 3. 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 4.
NO :
The inspection is complete.
STEP 4. 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 5.
NO :
The inspection is complete.
STEP 5. Reverse clutch and low-reverse brake
check
Check the facing for seizure and the piston seal ring
for damage and interference with the retainer.
Q: Is the check result normal?
YES :
The inspection is complete.
NO :
Repair or replace the reverse clutch and
low-reverse brake.
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-105
INSPECTION PROCEDURE 5: Does not move (forward or backward)
COMMENTS ON TROUBLE SYMPTOM
If the vehicle does not move forward or backward
when the selector lever is shifted to any position
while the engine is idling, the cause is probably an
abnormal line pressure, a malfunction of the power
train components, oil pump or valve body.
Possible causes
•
Abnormal line pressure
•
Malfunction of valve body
•
Malfunction of torque converter
•
Malfunction of oil pump
•
Malfunction of each element
•
Malfunction of power train components
DIAGNOSIS
STEP 1. Hydraulic pressure test
Measure the hydraulic pressure of each element
when the selector lever is in L, 2nd or reverse (Refer
to
OK: Refer to
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Go to Step 2.
STEP 2. 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 3.
NO :
The inspection is complete.
STEP 3. Torque converter check
Check for damaged drive plate, incorrect installation
in the input shaft (inserted at an angle) or damaged
splines.
Q: Is the check result normal?
YES :
Check the oil pump for incorrect installation,
damage and etc., and replace the oil pump
assembly if necessary (The oil pump cannot
be disassembled.)
NO :
If repair is possible, repair the damaged
part. If repair is not possible because the
splines on the drive plate or torque
converter are damaged, replace it.
STEP 4. Power train components check
Disassemble the transmission and check the input
shaft, planetary carrier, output shaft differential and
each element, etc.
Q: Is the check result normal?
YES :
The inspection is complete.
NO :
Repair or replace each power train
components.
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-106
INSPECTION PROCEDURE 6: Engine stalls during shifting
COMMENTS ON TROUBLE SYMPTOM
If the engine stalls when the selector lever is shifted
from N to D or R range while the engine is idling, the
cause is probably a malfunction of the engine
system, damper clutch solenoid valve, valve body or
torque converter (damper clutch).
Possible causes
•
Malfunction of engine system
•
Malfunction of damper clutch solenoid valve
•
Malfunction of valve body
•
Malfunction of torque converter (damper clutch)
•
Malfunction of the engine-A/T-ECU
DIAGNOSIS
STEP 1. MUT-II/III actuator test
Item 06: Damper clutch solenoid valve
OK: Operating sound can be heard.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the damper clutch solenoid valve.
STEP 2. 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 3.
NO :
The inspection is complete.
STEP 3. Torque converter check
Check for damaged drive plate, incorrect installation
in the input shaft (inserted at an angle), damaged
splines or damper clutch sealing.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
If repair is possible, repair the damaged
part. If repair is not possible because the
splines on the drive plate or torque
converter are damaged, replace it.
STEP 4. Engine system check
Q: Is the check result normal?
YES :
Replace the engine-A/T-ECU.
NO :
Repair the engine system.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст