Mitsubishi Outlander (2003+). Manual — part 204
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-111
STEP 4. Line pressure adjustment
(1) Adjust the line pressure (Refer to
(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. 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 :
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 :
The inspection is complete.
STEP 6. Each clutch and 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 each clutch and brake.
INSPECTION PROCEDURE 11: Does not shift properly (all points)
COMMENTS ON TROUBLE SYMPTOM
If all shift points are early or late while driving, the
cause is probably a malfunction of the output shaft
speed sensor, throttle position sensor, or
engine-A/T-ECU.
Possible causes
•
Malfunction of output shaft speed sensor
•
Malfunction of throttle position sensor
•
Malfunction of the engine-A/T-ECU
DIAGNOSIS
STEP 1. MUT-II/III data list
Item 02: Output shaft speed sensor (Refer to data list
reference table
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Refer to diagnosis code 23: Output shaft
speed sensor system
STEP 2. MUT-II/III data list
Item 11: Throttle position sensor (Refer to data list
reference table
).
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Check the throttle position sensor system
(Refer to GROUP 13B, Troubleshooting
STEP 3. MUT-II/III actuator test
(1) Item 14: INVECS-II cancel command
(2) Test drive the vehicle (Refer to Road Test,
Inspection procedure 8
(3) Check that the gear shifting corresponds to the
standard shift line of the shift pattern diagram.
Q: Is the check result normal?
YES :
The inspection is complete.
NO :
Replace the engine-A/T-ECU.
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-112
INSPECTION PROCEDURE 12: Does not shift properly (some point)
COMMENTS ON TROUBLE SYMPTOM
If some of the shift points are early or late when
driving, the cause is probably a malfunction of valve
body, or it is due to the characteristics of the
INVECS-II system but is not an abnormality.
Possible causes
•
Malfunction of valve body
•
Malfunction of the engine-A/T-ECU
DIAGNOSIS
STEP 1. Check when the shift points early or late.
Q: Are the shift points early or late only when A/T fluid
is
−
20
°
C or less, or 125
°
C or more?
YES :
The symptom is due to characteristics of the
INVECS-II system, but is not abnormal.
NO :
Go to Step 2.
STEP 2. MUT-II/III actuator test
(1) Item 14: INVECS-II cancel command
(2) Test drive the vehicle (Refer to Road Test,
Inspection procedure 8
(3) Check that the gear shifting corresponds to the
standard shift line of the shift pattern diagram.
Q: Is the check result normal?
YES :
The inspection is complete.
NO :
Replace the engine-A/T-ECU.
INSPECTION PROCEDURE 13: Does not shift (no diagnosis code)
COMMENTS ON TROUBLE SYMPTOM
The gear shifting does not occur while driving. If no
diagnosis codes are set, the cause is probably a
malfunction of the shift switch assembly or
engine-A/T-ECU .
POSSIBLE CAUSES
•
Malfunction of Shift switch assembly
•
Malfunction of the engine-A/T-ECU
DIAGNOSIS
STEP 1. MUT-II/III data list
Item 54: A/T control relay (Refer to Data List
Reference Table
).
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Replace the engine-A/T-ECU.
STEP 2. MUT-II/III data list
Item 67: Select switch (Refer to Data List Reference
Table
).
Q: Is the check result normal?
YES :
Replace the engine-A/T-ECU.
NO :
INSPECTION PROCEDURE 16: Shift
switch assembly system check (Refer to
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-113
INSPECTION PROCEDURE 14: Poor acceleration
COMMENTS ON TROUBLE SYMPTOM
If acceleration is poor when downshifting occurs
while driving, the cause is probably a malfunction of
the engine system.
Possible causes
•
Malfunction of engine system
•
Malfunction of the engine-A/T-ECU
DIAGNOSIS
STEP 1. Engine system check
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair the engine system.
STEP 2. 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 1.
NO :
The inspection is complete.
INSPECTION PROCEDURE 15: Vibration
COMMENTS ON TROUBLE SYMPTOM
If vibration occurs when driving at constant speed or
when acceleration in high range, the cause is
probably an abnormal torque converter pressure, or
a malfunction of the engine system, damper clutch
solenoid valve, valve body or torque converter.
Possible causes
•
Malfunction of damper clutch solenoid valve
•
Malfunction of engine system
•
Abnormal torque converter pressure
•
Malfunction of valve body
•
Malfunction of torque converter
•
Malfunction of the engine-A/T-ECU
DIAGNOSIS
STEP 1. Check when the vibration occurs.
Q: Does the vibration occur when the damper clutch
is operating?
YES :
Go to Step 3.
NO :
Go to Step 2.
STEP 2. Engine system check
Q: Is the check result normal?
YES :
The inspection is complete.
NO :
Repair the engine system.
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. 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 5.
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 5. Valve body disassembly clean and
assembly
Check the bolts for looseness and the O-ring,
solenoid valve and valve body for damage.
Q: Is the check result normal?
YES :
The inspection is complete.
NO :
Replace the valve body assembly if the
damages are thought to be irreparable.
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-114
INSPECTION PROCEDURE 16: Shift switch assembly system
ENGINE-
A/T-ECU
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
SHIFT
SWITCH
ASSEMBLY
SHIFT
SWITCH
SELECT
SWITCH
COMBINATION
METER
INHIBITOR
SWITCH
IGNITION
SWITCH (IG1)
AC309573AB
Shift switch system circuit <RHD>
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