Mitsubishi Galant. Manual — part 423
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-159
STEP 4. Check connectors B-38 at solenoid valve
assembly and C-42 at PCM for damage.
Q: Are the connectors in good condition?
YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
.
STEP 5. Check harness for damage between solenoid
valve assembly connector B-38 terminal 6 and PCM
connector C-42 terminal 129.
Q: Is the harness wire in good condition?
YES : Go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
.
ACX02479
CONNECTOR: B-38
AF
AC004197
PCM
AF
CONNECTOR: C-42
ACX02479
CONNECTOR: B-38
AF
AC004197
PCM
AF
CONNECTOR: C-42
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-160
STEP 6. Check connector A-19X at A/T control relay for
damage.
Q: Is the connector in good condition?
YES : Go to Step 7.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
.
STEP 7. Check harness for damage between solenoid
valve assembly connector B-38 terminal 10 and A/T control
relay connector A-19X terminal 3.
Q: Is the harness wire in good condition?
YES : Go to Step 8.
NO : Repair it.
AC004286 AC
A/T CONTROL
RELAY
BATTERY
CONNECTOR: A-19X
ACX02479
CONNECTOR: B-38
AF
AC004286 AC
A/T CONTROL
RELAY
BATTERY
CONNECTOR: A-19X
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-161
STEP 8. Using scan tool MB991502, check actuator test
item 01: Low-Reverse Solenoid Valve.
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 data link connector.
(2) Turn the ignition switch to "ON" position.
(3) Set scan tool MB991502 to the actuator test mode for item
01: Low-Reverse Solenoid Valve.
•
An operation sound should be heard from solenoid
valve when the low-reverse solenoid valve is operated.
(4) Turn the ignition switch to "LOCK" (OFF) position.
Q: Is the solenoid valve operating properly?
YES : 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.
STEP 9. Check connector B-38 at solenoid valve assembly
for damage.
Q: Is the connector in good condition?
YES : Go to Step 10.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
.
AC003081AC
MB991502
DATA LINK
CONNECTOR
ACX02479
CONNECTOR: B-38
AF
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-162
STEP 10. Check the low-reverse solenoid valve at solenoid
valve assembly connector B-38.
(1) Disconnect connector B-38 and measure at the solenoid
valve side.
(2) Measure the resistance between terminal 6 and 10.
Standard value: 2.7
−−−−
3.4
Ω
Ω
Ω
Ω
Q: Is the resistance at the standard value?
YES : Go to Step 11.
NO : Replace the low-reverse solenoid valve. Refer to
GROUP 23B, Valve Body
.
STEP 11. Check the power supply voltage at solenoid
valve assembly connector B-38.
(1) Disconnect connector B-38 and measure at the harness
side.
(2) Turn the ignition switch to "ON" position.
(3) Measure the voltage between terminal 10 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 13.
NO : Go to Step 12.
ACX02479
CONNECTOR: B-38
AF
AC001960
HARNESS
CONNECTOR: B-38
AE
ACX02479
CONNECTOR: B-38
AF
AC001966
HARNESS
CONNECTOR: B-38
AE
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