Mitsubishi Montero (2002-2004). Manual — part 919
DIAGNOSTIC TROUBLE CODE PROCEDURES <AUTOMATIC TRANSMISSION>
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DIAGNOSTIC TROUBLE CODE PROCEDURES
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STEP 13. Check the harness for an open or short circuit to
ground between A/T control solenoid valve assembly
connector C-03 (terminals 6, 7, 8 and 10) and solenoid
valve connectors C-03-4, C-03-5 and C-03-6.
Q: Is the harness wire in good condition?
YES : Replace the PCM.
NO : Replace the harness wire.
AC204395
CONNECTOR : C-03
AE
C-03 (B)
6
10
4
9
5
3
8
2
7
1
AC204749
CONNECTORS : C-03-4, C-03-5, C-03-6
1
2
C-03-4
1
2
C-03-5
1
2
C-03-6
AD
C-03-4
C-03-6
C-03-5
DIAGNOSTIC TROUBLE CODE PROCEDURES <AUTOMATIC TRANSMISSION>
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DIAGNOSTIC TROUBLE CODE PROCEDURES
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DTC 32: Underdrive Solenoid Valve System
.
Solenoid Valve System Circuit
Refer to
.
.
CIRCUIT OPERATION
Refer to
.
.
DTC SET CONDITIONS
If the resistance value for the underdrive solenoid
valve circuit is greater than 3.5 ohms (open) or less
than 2.6 ohms (short) for 4 seconds, DTC 32 is set.
The transmission is locked into 3rd gear as a fail-
safe measure, and the "N" range light flashes once
per second.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
• Malfunction of underdrive solenoid valve
• Damaged harness, connector
• Malfunction of the PCM
DIAGNOSIS
Required Special Tool:
• MB991502: Scan Tool (MUT-II)
STEP 1. Using scan tool MB991502, check actuator test
item 02: Underdrive Solenoid Valve.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991502 to actuator test mode for item 02,
Underdrive Solenoid Valve.
• An audible clicking or buzzing should be heard when the
underdrive solenoid valve is energized.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid valve operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points
− How to Cope with
Intermittent Malfunctions
.
NO : Go to Step 2.
ACX01539AD
MB991502
16-PIN
DIAGNOSTIC TROUBLE CODE PROCEDURES <AUTOMATIC TRANSMISSION>
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DIAGNOSTIC TROUBLE CODE PROCEDURES
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STEP 2. Using scan tool MB991502, read the A/T
diagnostic trouble code.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check for A/T diagnostic trouble code.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC 54 set? (DTC 54 may be set along with multiple
DTCs.)
YES : Refer to
DTC 54: A/T Control Relay
System.
NO : Go to Step 3.
STEP 3. Using scan tool MB991502, read the A/T
diagnostic trouble code.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check for A/T diagnostic trouble code.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Are DTC 33 and DTC 34 set? (Multiple DTCs may be set.)
YES : Go to Step 8.
NO : Go to Step 4.
STEP 4. Measure the underdrive solenoid valve resistance
at A/T control solenoid valve assembly connector C-03.
(1) Disconnect connector C-03 and measure at the solenoid
valve side.
(2) Measure the resistance between solenoid valve assembly
connector C-03 terminals 3 and 9.
Resistance value: 2.7
− 3.4 ohms [at 20°C (68°F)]
Q: Is the measured resistance 2.7
− 3.4 ohms [at 20°C
(68
°F)]?
YES : Go to Step 6.
NO : Go to Step 5.
ACX01539AD
MB991502
16-PIN
ACX01539AD
MB991502
16-PIN
AC204395
CONNECTOR : C-03
AE
C-03 (B)
6
10
4
9
5
3
8
2
7
1
AC204918
C-03 HARNESS CONNECTOR :
SOLENOID VALVE SIDE
CT
6
10
4
9
5
3
8
2
7
1
DIAGNOSTIC TROUBLE CODE PROCEDURES <AUTOMATIC TRANSMISSION>
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DIAGNOSTIC TROUBLE CODE PROCEDURES
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STEP 5. Measure the solenoid valve resistance at the
underdrive solenoid valve connector C-03-2 inside the
transmission.
(1) Disconnect solenoid valve connector C-03-2 and measure
at the solenoid valve side.
(2) Measure the resistance between underdrive solenoid valve
terminals 1 and 2.
Resistance value: 2.7
− 3.4 ohms [at 20°C (68°F)]
Q: Is the measured resistance 2.7
− 3.4 ohms [at 20°C
(68
°F)?
YES : Replace the harness wire between A/T control
solenoid valve assembly connector C-03 and the
solenoid valves.
NO : Replace the underdrive solenoid valve. Refer to
GROUP 23B, Valve Body
AC204748
CONNECTOR : C-03-2
AC
1
2
AC204918
C-03-2 HARNESS CONNECTOR :
UNDERDRIVE SOLENOID
VALVE SIDE
CN
1
2
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