Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 487

AUTOMATIC TRANSAXLE DIAGNOSIS

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AUTOMATIC TRANSAXLE

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STEP 7. Check the power supply voltage at A/T control
relay connector A-19X.
(1) Disconnect the A/T control relay and measure at the

connector side.

(2) Turn the ignition switch to "ON" position.
(3) Measure the voltage between terminal 4 and ground.

•

Voltage should be battery positive voltage.

(4) Turn the ignition switch to "LOCK" (OFF) position.

Q: Is the voltage normal?

YES : Go to Step 11.
NO : Go to Step 8.

STEP 8. Check the power supply voltage at PCM connector
C-54 <2.4L Engine> or C-55 <3.0L Engine> by backprobing.
(1) Do not disconnect connector C-54 <2.4L Engine> or C-55

<3.0L Engine>.

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

(3) Measure the voltage between terminal 50 and ground by

backprobing.

•

Voltage should be battery positive voltage.

(4) Turn the ignition switch to "LOCK" (OFF) position.

Q: Is the voltage normal?

YES : Go to Step 9.
NO : Go to Step 10.

ACX02173

HARNESS
CONNECTOR: A-19X

AC

AC001657

CONNECTOR: C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>

PCM

AL

AC002010

C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>
CONNECTOR HARNESS
SIDE VIEW

AD

AUTOMATIC TRANSAXLE DIAGNOSIS

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AUTOMATIC TRANSAXLE

23A-241

STEP 9. Check connector C-54 <2.4L Engine> or C-55
<3.0L Engine> at PCM for damage.
Q: Is the connector in good condition?

YES : Repair it because of harness open circuit between A/

T control relay connector A-19X terminal 4 and PCM
connector C-54 <2.4L Engine> or C-55 <3.0L
Engine> terminal 50.

NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

.

STEP 10. Check harness for short circuit to ground
between A/T control relay connector A-19X terminal 4 and
PCM connector C-54 <2.4L Engine> or C-55 <3.0L Engine>
terminal 50.
Q: Is the harness wire in good condition?

YES : Go to Step 11.
NO : Repair it.

AC001657

CONNECTOR: C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>

PCM

AL

AC004306 AC

BATTERY

CONNECTOR: A-19X

AC001657

CONNECTOR: C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>

PCM

AL

AUTOMATIC TRANSAXLE DIAGNOSIS

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AUTOMATIC TRANSAXLE

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STEP 11. Using scan tool MB991502, check data list item
54: A/T control relay output Voltage.

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to "ON" position.
(3) Set scan tool MB991502 to data reading mode for item 54:

A/T Control Relay Output Voltage.

•

Voltage should be battery positive voltage.

(4) Turn the ignition switch to "LOCK" (OFF) position.

Q: Is the relay operating properly?

YES : This malfunction is intermittent. Refer to GROUP 00,

How to Use Troubleshooting/Inspection Service
Points

−

How to Cope with Intermittent Malfunction

P.00-6

.

NO : Replace the PCM.

AC001252

MB991502

16 PIN

AB

AUTOMATIC TRANSAXLE DIAGNOSIS

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AUTOMATIC TRANSAXLE

23A-243

STEP 12. Check the relay output voltage at PCM connector
C-57 <2.4L Engine> or C-59 <3.0L Engine> by backprobing.
(1) Do not disconnect connector C-57 <2.4L Engine> or C-59

<3.0L Engine>.

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

(3) Measure the voltage between terminal 77 and ground by

backprobing.

•

Voltage should be battery positive voltage.

(4) Measure the voltage between terminal 89 and ground by

backprobing.

•

Voltage should be battery positive voltage.

(5) Turn the ignition switch to "LOCK" (OFF) position.

Q: Is the voltage normal?

YES : Go to Step 11.
NO : Go to Step 13.

STEP 13. Check connector C-57 <2.4L Engine> or C-59
<3.0L Engine> at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 14.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

.

AC001657

CONNECTOR: C-57 <2.4L ENGINE> OR
C-59 <3.0L ENGINE>

AK

PCM

AC002011

C-57 <2.4L ENGINE> OR
C-59 <3.0L ENGINE>
CONNECTOR HARNESS
SIDE VIEW

AD

AC002012

C-57 <2.4L ENGINE> OR
C-59 <3.0L ENGINE>
CONNECTOR HARNESS
SIDE VIEW

AD

AC001657

CONNECTOR: C-57 <2.4L ENGINE> OR
C-59 <3.0L ENGINE>

AK

PCM