Mitsubishi Outlander XL. Manual — part 488
TROUBLESHOOTING HINTS (THE MOST LIKELY
CAUSES FOR THIS CODE TO BE SET ARE:)
⦆
Malfunction of the lock-up and low-reverse brake
linear solenoid valve system circuit
⦆
Damaged harness or connector
⦆
Malfunction of the TCM
⦆
Malfunction of the lock-up and low-reverse brake
linear solenoid valve (valve body assembly)
DIAGNOSIS
STEP 1. Check the TCM terminal voltage.
[C-37 TCM connector (vehicle side, connected)]
Measure the voltage between the terminal No. 52 and body
ground.
⦆
Lock-up released: 0 V
⦆
Lock-up engaged: 300 Hz
Q:Is the check result normal?
YES:
Go to Step 5.
NO:
Go to Step 2.
STEP 2. Check between the TCM connector and A/T control
solenoid valve assembly connector.
Check for continuity between C-37 TCM connector and B-111
A/T control solenoid valve assembly connector.
⦆
Between C-37 terminal No. 52 and B-111 terminal No. 4:
Continuity exists.
When the continuity check result is OK, check that the wiring
harness is not shorted to the body and other wiring harness.
Q:Is the check result normal?
YES:
Go to Step 3.
NO:
Repair or replace the failure section.
STEP 3. Check the lock-up and low-reverse brake linear
solenoid.
Refer to P.23A-160.
Q:Is the check result normal?
YES:
Go to Step 6.
NO:
Go to Step 4.
STEP 4. Check between the A/T control solenoid valve
assembly connector and the lock-up and low-reverse brake
linear solenoid valve connector.
Check for continuity between the A/T control solenoid valve
assembly connector and the lock-up and low-reverse brake
linear solenoid valve connector terminals.
⦆
Between C-111 terminal No. 4 and the lock-up and low-
reverse brake linear solenoid valve: Continuity exists.
Q:Is the check result satisfactory?
YES:
Replace the valve body assembly.
NO:
Repair or replace the failure section.
AUTOMATIC TRANSAXLE MECHANICAL
23A-67
AUTOMATIC TRANSAXLE DIAGNOSIS
STEP 5. Check the TCM and A/T control solenoid valve
assembly connector pin terminals and the connection
status.
Q:Is the check result normal?
YES:
Go to Step 7.
NO:
Repair or replace the failure section.
STEP 6. Check the TCM and A/T control solenoid valve
assembly connector pin terminals and the connection
status.
Q:Is the check result normal?
YES:
Replace the TCM.
NO:
Repair or replace the failure section.
STEP 7. Erase the DTC code, and drive the vehicle for a
while.
Check that the normal code is displayed.
Q:Is the check result normal?
YES:
The procedure is complete.
NO:
Return to START.
DTC P0748: Line Pressure Linear Solenoid Valve System
M12301000410USA0000010000
SOLENOID VALVE SYSTEM CIRCUIT
Refer to P.23A-64.
DESCRIPTIONS OF MONITOR METHODS
⦆
With the ignition switch ON, an abnormal value
equivalent to open or short circuit is detected in the
solenoid control current for 5 seconds.
MONITOR EXECUTION
⦆
Continuous
MONITOR EXECUTION CONDITIONS (OTHER
MONITOR AND SENSOR)
Other Monitor (There is no temporary DTC stored in
memory for the item monitored below)
⦆
Not applicable
Sensor (The sensor below is determined to be
normal)
⦆
Not applicable
23A-68
AUTOMATIC TRANSAXLE MECHANICAL
AUTOMATIC TRANSAXLE DIAGNOSIS
LOGIC FLOW CHARTS (Monitor Sequence)
ZC604076
Good
Malfunction
END
START
Continuous failure
for 5 secs.
No
No
Good
No
Yes
Yes
Yes
No
Yes
Short to ground
Open judgement
Ignition switch :ON
(Battery positive voltage
≧
2V)
0000
DTC SET CONDITIONS
Check Conditions <Circuit continuity ground>
⦆
Voltage of battery: 2 volts or more.
Judgement Criteria <Circuit continuity ground>
⦆
Ground short judgement: abnormal. (5 seconds)
Check Conditions <Circuit continuity open>
⦆
Voltage of battery: 2 volts or more.
⦆
Ground short judgement: normal.
Judgement Criteria <Circuit continuity open>
⦆
Open short judgement: abnormal. (5 seconds)
OBD-II DRIVE CYCLE PATTERN
Start the engine, and keep the vehicle stopped in "P"
range for 5 seconds.
TROUBLESHOOTING HINTS (THE MOST LIKELY
CAUSES FOR THIS CODE TO BE SET ARE:)
⦆
Malfunction of the line pressure linear solenoid
valve system circuit
⦆
Damaged harness or connector
⦆
Malfunction of the TCM
⦆
Malfunction of the line pressure linear solenoid
valve (valve body assembly)
AUTOMATIC TRANSAXLE MECHANICAL
23A-69
AUTOMATIC TRANSAXLE DIAGNOSIS
DIAGNOSIS
STEP 1. Check the TCM terminal voltage.
[C-37 TCM connector (vehicle side, connected)]
Measure the voltage between the terminal No. 40 and body
ground.
⦆
While driving: 300 Hz
⦆
Other than above: 0 V
Q:Is the check result normal?
YES:
Go to Step 5.
NO:
Go to Step 2.
STEP 2. Check between the TCM connector and A/T control
solenoid valve assembly connector.
Check for continuity between C-37 TCM connector and B-111
A/T control solenoid valve assembly connector.
⦆
Between C-37 terminal No. 40 and B-111 terminal No. 9:
Continuity exists.
When the continuity check result is OK, check that the wiring
harness is not shorted to the body and other wiring harness.
Q:Is the check result normal?
YES:
Go to Step 3.
NO:
Repair or replace the failure section.
STEP 3. Check the line pressure linear solenoid.
Refer to P.23A-160.
Q:Is the check result normal?
YES:
Go to Step 6.
NO:
Go to Step 4.
STEP 4. Check between the A/T control solenoid valve
assembly connector and the line pressure linear solenoid
valve connector.
Check for continuity between the A/T control solenoid valve
assembly connector terminals and the line pressure linear
solenoid valve connector terminals.
⦆
Between C-111 terminal No. 9 and line pressure linear
solenoid valve: Continuity exists.
Q:Is the check result satisfactory?
YES:
Replace the valve body assembly.
NO:
Repair or replace the failure section.
STEP 5. Check the TCM and A/T control solenoid valve
assembly connector pin terminals and the connection
status.
Q:Is the check result normal?
YES:
Go to Step 7.
NO:
Repair or replace the failure section.
23A-70
AUTOMATIC TRANSAXLE MECHANICAL
AUTOMATIC TRANSAXLE DIAGNOSIS
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