Mitsubishi Eclipse. Manual - part 808

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-241

STEP 4. Measure the Overdrive solenoid valve resistance 
at A/T control solenoid valve assembly connector B-40.
(1) Disconnect connector B-40 and measure at the solenoid 

valve side.

(2) Measure the resistance between solenoid valve assembly 

connector B-40 terminals 5 and 9.

Resistance value: 2.7

−3.4 Ω [at 20°C (68°F)]

Q: Is the measured resistance 2.7

−3.4 Ω [at 20°C (68°F)]?

YES : Go to Step 6.
NO :  Go to Step 5.

STEP 5. Measure the solenoid valve resistance at the 
overdrive solenoid valve assembly inside the transaxle.
(1) Disconnect connector B-40-3 and measure at the solenoid 

valve side.

(2) Measure the resistance between Overdrive solenoid valve 

terminals 1 and 2.

Resistance value: 2.7

−3.4 Ω [at 20°C (68°F)]

Q: Is the measured resistance 2.7

−3.4 Ω [at 20°C (68°F)?

YES : Replace the harness wire between A/T control 

solenoid valve assembly connector B-40 and the 
solenoid valves.

NO :  Replace the Overdrive solenoid valve. Refer to 

GROUP 23B, Valve Body 

P.23B-74

.

ACX02479

CONNECTOR: B-40

AK

B-40

AC001968 AN

B-40 HARNESS CONNECTOR:
A/T CONTROL SOLENOID VALVE
ASSEMBLY SIDE

AC002219

CONNECTORS: B-40-3

CM

B-40-3

VALVE BODY
ASSEMBLY

2

1

2

1

AC201141BH

B-40-3 HARNESS
CONNECTOR: 
OVERDRIVE
SOLENOID VALVE SIDE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-242

STEP 6. Check A/T control solenoid valve assembly 
connector B-40 and PCM connector C-61 <2.4L Engine> or 
C-63 <3.0L Engine> for loose, corroded or damaged 
terminals, or terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 7.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

STEP 7. Check the harness for an open or short circuit to 
ground between A/T control solenoid valve assembly 
connector B-40 terminal 5 and PCM connector C-61 <2.4L 
Engine> or C-63 <3.0L Engine> terminal 130.
Q: Is the harness wire in good condition?

YES : Replace the PCM.
NO :  Repair or replace the harness wire.

ACX02479

CONNECTOR: B-40

AK

B-40

AC001657

CONNECTOR: C-61 <2.4L ENGINE> OR
C-63 <3.0L ENGINE>

PCM

BC

C-61 <2.4L ENGINE> OR C-63 <3.0L ENGINE>

ACX02479

CONNECTOR: B-40

AK

B-40

AC001657

CONNECTOR: C-61 <2.4L ENGINE> OR
C-63 <3.0L ENGINE>

PCM

BC

C-61 <2.4L ENGINE> OR C-63 <3.0L ENGINE>

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-243

STEP 8. Measure the supply voltage at A/T control 
solenoid valve assembly connector B-40.
(1)  Disconnect solenoid valve assembly harness connector 

B-40.

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

(3) Measure the voltage between harness connector B-40 

terminal 9 and ground.

• The voltage should equal battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage?

YES : Go to Step 11.
NO :  Go to Step 9.

STEP 9. Check A/T control relay connector A-17X in the 
engine component relay box and A/T control solenoid 
valve assembly connector B-40 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 10.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

ACX02479

CONNECTOR: B-40

AK

B-40

AC001967AT

B-40 HARNESS
CONNECTOR:
COMPONENT SIDE

AC102447AF

BATTERY

CONNECTOR: A-17X

A-17X

FRONT OF VEHICLE

ACX02479

CONNECTOR: B-40

AK

B-40

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-244

STEP 10. Check the harness for an open circuit or short 
circuit to ground between A/T control relay connector 
A-17X terminal 4 in the engine component relay box and 
A/T control solenoid valve assembly connector B-40 
terminal 9.
Q: Is the harness wires in good condition?

YES : Go to Step 11.
NO :  Repair or replace the harness wire.

STEP 11. Check A/T control solenoid valve assembly 
connector B-40 and PCM connector C-61 <2.4L Engine> or 
C-63 <3.0L Engine> for loose, corroded or damaged 
terminals, or terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 12.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

AC102447AF

BATTERY

CONNECTOR: A-17X

A-17X

FRONT OF VEHICLE

ACX02479

CONNECTOR: B-40

AK

B-40

ACX02479

CONNECTOR: B-40

AK

B-40

AC001657

CONNECTOR: C-61 <2.4L ENGINE> OR
C-63 <3.0L ENGINE>

PCM

BC

C-61 <2.4L ENGINE> OR C-63 <3.0L ENGINE>