Mitsubishi Eclipse. Manual — part 771
AUTOMATIC TRANSAXLE DIAGNOSIS
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AUTOMATIC TRANSAXLE
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STEP 6. Using scan tool MB991958, check data list item 15:
Transmission Fluid Temperature Sensor.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine.
(3) Set scan tool MB991958 to data reading mode for item 15:
Transmission Fluid Temperature Sensor.
• When the engine is cool: Almost equal to the ambient
temperature (atmospheric temperature)
NOTE: Set scan tool MB991958 to data reading mode
for item number 13, Intake Air Temperature (IAT) Sensor
and note the temperature measurement. When the
engine is cool, the temperature should be almost equal
to the ambient temperature (atmospheric temperature),
and the IAT sensor measurement should be approxi-
mately the same as the Transmission Fluid Temperature
Sensor.
• When the engine is warm: 70 to 80°C (158 to 176°F)
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor 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 Malfunction
.
NO : Replace the PCM.
AC303127
AB
MB991911
16-PIN
MB991827
MB991824
AUTOMATIC TRANSAXLE DIAGNOSIS
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AUTOMATIC TRANSAXLE
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STEP 7. Measure the sensor output voltage at PCM
connector C-61 <2.4L Engine> or C-63 <3.0L Engine> by
backprobing.
(1) Do not disconnect connector C-61 <2.4L Engine> or C-63
<3.0L Engine>.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 124 and ground by
backprobing.
• When transmission fluid temperature is 20°C (68°F),
voltage should measure between 3.8 and 4.0 volts.
• When transmission fluid temperature is 40°C (104°F),
voltage should measure between 3.2 and 3.4 volts.
• When transmission fluid temperature is 80°C (176°F),
voltage should measure between 1.7 and 1.9 volts.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage within the specified range?
YES : Go to Step 6.
NO : Go to Step 8.
STEP 8. Check 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 connector and terminals in good condition?
YES : Go to Step 9.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
AC001657
CONNECTORS: C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>, C-61 <2.4L ENGINE>
OR C-63 <3.0L ENGINE>
PCM
BD
C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>
C-61 <2.4L ENGINE>
OR
C-63 <3.0L ENGINE>
AC001792
C-61 <2.4L ENGINE> OR
C-63 <3.0L ENGINE>
HARNESS CONNECTOR:
HARNESS SIDE
AN
AC001657
CONNECTORS: C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>, C-61 <2.4L ENGINE>
OR C-63 <3.0L ENGINE>
PCM
BD
C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>
C-61 <2.4L ENGINE>
OR
C-63 <3.0L ENGINE>
AUTOMATIC TRANSAXLE DIAGNOSIS
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AUTOMATIC TRANSAXLE
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STEP 9. Check the harness for a short circuit to ground
between A/T control solenoid valve connector B-40
terminal 1 and PCM connector C-61 <2.4L Engine> or C-63
<3.0L Engine> terminal 124.
Q: Is the harness wire in good condition?
YES : Go to Step 6.
NO : Repair or replace the harness wire.
ACX02479
CONNECTOR: B-40
AK
B-40
AC001657
CONNECTORS: C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>, C-61 <2.4L ENGINE>
OR C-63 <3.0L ENGINE>
PCM
BD
C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>
C-61 <2.4L ENGINE>
OR
C-63 <3.0L ENGINE>
AUTOMATIC TRANSAXLE DIAGNOSIS
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DTC 21: Crankshaft Position Sensor System
AC106629 AB
AC102214
A-18X
AE
CONNECTOR: A-18X
FRONT OF
VEHICLE
BATTERY
2
1
3
4
AC004926AC
CONNECTOR: B-20
<2.4L ENGINE>
B-20
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