Mitsubishi Outlander (2003+). Manual - part 193

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-67

STEP 5. Measure the voltage at engine-A/T-ECU 
connector C-138.
(1) Connect A/T control solenoid valve assembly 

connector B-34.

(2) Turn the ignition switch to the ON position.

(3) Measure the voltage between engine-A/T-ECU 

connector C-138 terminal No.128 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Go to Step 6.

STEP 6. Connector check: C-138 engine-A/T-ECU 
connector

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the defective connector.

AC309479

Engine-A/T-ECU

Harness side

C-138 (GR)

Engine-A/T-ECU

C-138 (GR)

124 123

130

131

132

133
141 140 139 138
146 145

129
137

128
136

127126

135
143

121
125
134
142

144

122

AC

Connector: C-138 <RHD>

Connector: C-138 <LHD>

AC309479

Engine-A/T-ECU

Harness side

C-138 (GR)

Engine-A/T-ECU

C-138 (GR)

124 123

130

131

132

133
141 140 139 138
146 145

129
137

128
136

127126

135
143

121
125
134
142

144

122

AC

Connector: C-138 <RHD>

Connector: C-138 <LHD>

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-68

STEP 7. Check the harness between A/T control 
solenoid valve assembly connector B-34 terminal 
No.6 and engine-A/T-ECU connector C-138 
terminal No.128.

Check the output line for short or open circuit.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the wiring harness.

STEP 8. MUT-II/III actuator test

•

Item 01: Low-reverse solenoid valve

OK: Operating sound can be heard.

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

−

 How to Cope with Intermittent 

Malfunction 

P.00-6

.)

NO : 

Replace the engine-A/T-ECU.

STEP 9. Connector check: B-34 A/T control 
solenoid valve assembly connector

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the defective connector.

STEP 10. Measure the resistance at A/T control 
solenoid valve assembly connector B-34.

Disconnect the connector, and measure the 
resistance between terminal No.6 and No.10 at the 
solenoid valve side.

OK: 2.7 

−

 3.4 

Ω

 (A/T fluid temperature 20

°

C)

Q: Is the check result normal?

YES : 

Go to Step 11.

NO : 

Check the solenoid valve harness.

AC309511

B-34 (GR)

Harness side

AB

Connector: B-34

AC309479

Engine-A/T-ECU

Harness side

C-138 (GR)

Engine-A/T-ECU

C-138 (GR)

124 123

130

131

132

133
141 140 139 138
146 145

129
137

128
136

127126

135
143

121
125
134
142

144

122

AC

Connector: C-138 <RHD>

Connector: C-138 <LHD>

AC309511

B-34 (GR)

Harness side

AB

Connector: B-34

AC309511AC

B-34 (GR)

Connector: B-34

Sensor side

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-69

STEP 11. Connector check: B-16X A/T control 
relay connector

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Repair the defective connector.

STEP 12. Check the harness between A/T control 
solenoid valve assembly connector B-34 terminal 
No.10 and A/T control relay connector B-16X 
terminal No.1.

Check the power supply line for short or open circuit.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the wiring harness.

AC309525

AB

Connector: B-16X

Front of 
vehicle

Relay box 
side

AC309511

B-34 (GR)

Harness side

AB

Connector: B-34

AC309525

AB

Connector: B-16X

Front of 
vehicle

Relay box 
side

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-70

Code No.32: Underdrive solenoid valve system

SOLENOID VALVE SYSTEM CIRCUIT
 Refer to 

P.23A-65

.

OPERATION

•

Solenoid valve closes or opens according to the 
signals from the engine-A/T-ECU.

•

The engine-A/T-ECU energizes or deenergizes 
solenoid valve, based on input signals such as 
throttle position sensor opening angle, inhibitor 
switch, etc.

diagnosis code set conditions
If the drive terminal voltage of the underdrive 
solenoid valve is 3.0 V or less, it is judged that there 
is a short-circuit or open circuit in the solenoid valve, 
and diagnosis code 32 is output.
If diagnosis code 32 is output 4 times, the 
transmission is fixed in 3rd as a fail-safe measure.

Possible causes

•

Malfunction of underdrive solenoid valve

•

Damaged harness wires and connectors

•

Malfunction of the engine-A/T-ECU

DIAGNOSIS

STEP 1. MUT-II/III diagnosis code

Q: Are diagnosis codes 33 and 34 set?

YES : 

Go to Step 9.

NO : 

Go to Step 2.

STEP 2. MUT-II/III actuator test

Item 02: Underdrive solenoid valve

OK: Operating sound can be heard.

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

−

 How to Cope with Intermittent 

Malfunction 

P.00-6

.)

NO : 

Go to Step 3.

STEP 3. Connector check: B-34 A/T control 
solenoid valve assembly connector

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

STEP 4. Measure the resistance at A/T control 
solenoid valve assembly connector B-34.

Disconnect the connector, and measure the 
resistance between terminal No.3 and No.9 at the 
solenoid valve side.

OK: 2.7 

−

 3.4 

Ω

 (A/T fluid temperature 20

°

C)

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Check the underdrive solenoid valve.

STEP 5. Measure the voltage at engine-A/T-ECU 
connector C-138.
(1) Connect A/T control solenoid valve assembly 

connector B-34.

AC309511

B-34 (GR)

Harness side

AB

Connector: B-34

AC309511AC

B-34 (GR)

Connector: B-34

Sensor side