Mitsubishi Outlander GS45X. Manual — part 1628
DIAGNOSIS
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CVT
23A-69
DIAGNOSTIC PROCEDURE
STEP 1. M.U.T.-III data list
• Item 33: Line pressure SOL. output current
• Item 32: Line pressure SOL. monitor current
OK: Check if the output current and monitoring cur-
rent differ largely.
Q: Is the check result normal?
YES : Intermittent malfunction
NO : Go to Step 2.
STEP 2. Check the following connector:
• C-38 TCM connector
• B-125 CVT assembly connector
Check the terminals for a contact status problem and internal
short circuit.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Repair the defective connector.
STEP 3. Check for open circuit and short to ground in the
wiring harness between the TCM connector and the CVT
assembly connector.
Between C-38 TCM connector (terminal No.1) and B-125 CVT
assembly connector (terminal No.1)
Q: Is the check result normal?
YES : Go to Step 4.
NO : Repair the wiring harness.
STEP 4. Line pressure solenoid valve single unit check
Refer to
.
Q: Is the check result normal?
YES : Go to Step 5.
NO : Replace the valve body assembly.
STEP 5. Symptom recheck after erasing diagnostic trouble
code
Q: Is the check result normal?
YES : Intermittent malfunction
NO : Replace TCM.
DIAGNOSIS
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CVT
23A-70
DTC P0746: Abnormality in Hydraulic Control System Function
.
DIAGNOSTIC FUNCTION
TCM determines that the malfunction is present
when pulley ratio becomes higher (pulley ratio range:
2.349 to 0.394).
.
DESCRIPTIONS OF MONITOR METHODS
• The status with the pulley ratio of 3.5 or more
continues for 0.1 second or with the pulley ratio of
2.7 or more continues for 0.2 second.
.
MONITOR EXECUTION
• Transmission range: D
• Throttle valve opening : 1/8 or more
• Engine speed : 450 r/min or more
• CVT fluid temperature : from 20 to 180°C
(68~356
°F)
.
MONITOR EXECUTION CONDITIONS
(OTHER MONITOR AND SENSOR)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• P0741: Abnormality in lockup function
• P0841: Abnormality in line pressure sensor func-
tion
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
DIAGNOSIS
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CVT
23A-71
LOGIC FLOW CHARTS (Monitor Sequence)
.
DTC SET CONDITIONS
Check Conditions
• Transmission range switch position: D.
• Throttle position sensor voltage: 1.37 volts or
more.
• Engine speed: 450 r/min or more.
• Transmission fluid temperature: 20°C (68°F) or
more.
• Transmission fluid temperature: 180°C (356°F) or
less.
• Voltage of battery: 9 volts or more.
• Voltage of battery: 16 volts or less.
JUDGMENT CRITERIA
• Pulley ratio (primary pulley ratio/secondary pulley
ratio): more than 3.5. (0.1 second)
• Pulley ratio (primary pulley ratio/secondary pulley
ratio): more than 2.7. (0.2 second)
.
OBD-II DRIVE CYCLE PATTERN
Transmission range: D (Drive the vehicle for 10 sec-
onds or more while the accelerator opening angle is
20% or more)
.
No
AC609375
START
Yes
No
Pulley ratio > 3.5
No
Yes
Good
Malfunction
END
Yes
Yes
Yes
All secondary parameters
are in the enable condition.
No
No
Continuous failure for 0.1 sec
Pulley ratio > 2.7
Continuous failure for 0.2 sec
AB
DIAGNOSIS
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CVT
23A-72
PROBABLE CAUSES
• Abnormal line pressure
• Malfunction of TCM
DIAGNOSTIC PROCEDURE
STEP 1. Check other diagnostic trouble codes.
Q: Are other diagnostic trouble codes set?
YES : Carry out the appropriate troubleshooting.
NO : Go to Step 2.
STEP 2. M.U.T.-III data list
Item 33: Line pressure SOL. output current (Refer to Data List
Reference Table
Q: Is the check result normal?
YES : Intermittent malfunction
NO : Go to Step 3.
STEP 3. Line Pressure Check
Carry out "hydraulic test"(Refer to
Q: Is the check result normal?
YES : Go to Step 4.
NO : Repair according to the hydraulic pressure test
diagnosis table.
STEP 4. Symptom recheck after erasing diagnostic trouble
code
Q: Is the check result normal?
YES : Intermittent malfunction
NO : Replace TCM.
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