Mitsubishi Eclipse. Manual — part 802
AUTOMATIC TRANSAXLE DIAGNOSIS
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AUTOMATIC TRANSAXLE
23A-217
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 10.
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
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>
AUTOMATIC TRANSAXLE DIAGNOSIS
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AUTOMATIC TRANSAXLE
23A-218
STEP 12. Check the harness for an open or short circuit to
ground between A/T control solenoid valve assembly
connector B-40 (terminals 6 and 7) and PCM connector
C-61 <2.4L Engine> or C-63 <3.0L Engine> (terminals 107
and 129).
Q: Are the harness wires in good condition?
YES : Go to Step 13.
NO : Repair or replace the harness wire.
STEP 13. Check the harness for an open or short circuit to
ground between A/T control solenoid valve assembly
connector B-40 (terminals 6, 7, and 10) and solenoid valve
connectors B-40-4 and B-40-5.
Q: Is the harness wire in good condition?
YES : Replace the PCM.
NO : 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
AC002219
CONNECTORS: B-40-4, B-40-5
CI
B-40-5
VALVE BODY
ASSEMBLY
B-40-4
2
1
AUTOMATIC TRANSAXLE DIAGNOSIS
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AUTOMATIC TRANSAXLE
23A-219
DTC 32 (P0758): Underdrive Solenoid Valve System
.
Solenoid Valve System Circuit
Refer to
.
CIRCUIT OPERATION
Refer to
.
DESCRIPTIONS OF MONITOR METHODS
If solenoid terminal voltage is below specified value
when shift control is not in progress, PCM judges
that underdrive solenoid has a failure.
.
MONITOR EXECUTION
Continuous
.
MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• DTC 41 (P0731): 1st gear incorrect ratio
• DTC 42 (P0732): 2nd gear incorrect ratio
• DTC 43 (P0733): 3rd gear incorrect ratio
• DTC 44 (P0734): 4th gear incorrect ratio
• DTC 46 (P0736): Reverse gear incorrect ratio
• DTC 36 (P0743): Torque converter clutch sole-
noid malfunction
• DTC 31 (P0753): Low-reverse solenoid malfunc-
tion
• DTC 33 (P0763): Second solenoid malfunction
• DTC 34 (P0768): Overdrive solenoid malfunction
• DTC 54 (P1751): A/T control relay malfunction
Sensor (The sensor below is determined to be
normal)
• Torque converter clutch solenoid
• Low-reverse solenoid
• Second solenoid
• Overdrive solenoid
• A/T control relay
.
AUTOMATIC TRANSAXLE DIAGNOSIS
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AUTOMATIC TRANSAXLE
23A-220
LOGIC FLOW CHARTS (Monitor Sequence)
.
DTC SET CONDITIONS (Entry Conditions and
Malfunction Thresholds)
Check Conditions
• Solenoid status: either solid ON or OFF.
• Shift status: in-gear.
• Voltage of battery: 10 volts or more.
Judgement Criteria
• Solenoid voltage: 3 volts or less. (0.3 second)
• If DTC 32 (P0758) is set consecutively four times,
the transaxle is locked into 3rd gear as a fail-safe
measure, and the "N" range light flashes once
per second.
.
OBD-II DRIVE CYCLE PATTERN
Start the engine, and keep the vehicle stopped in "P"
range for 5 seconds.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
• Malfunction of the underdrive solenoid valve
• Damaged harness or connector
• Malfunction of the PCM
AC205282
Good
Malfunction
END
START
In-gear?
Shift solenoid-B is in ON
or OFF steady state
Voltage of battery > 10 V
Solenoid circuit
voltage < 3 V
Continuous failure
for 0.3 sec.
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Underdrive solenoid valve
is in ON or OFF steady state
AB
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