Mitsubishi 380. Manual — part 385
AUTOMATIC TRANSMISSION DIAGNOSIS
AUTOMATIC TRANSMISSION
23A-80
STEP 9. Check A/T-ECU connector B-22 and output shaft
speed sensor connector B-107 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 damages components. Refer to
GROUP 00E, Harness Connector Inspection
16DB480A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
A/T
CONTROL
UNIT
AC305353AC
CONNECTOR: B-107
BATTERY
B-107 (GR)
3
2
1
AUTOMATIC TRANSMISSION DIAGNOSIS
AUTOMATIC TRANSMISSION
23A-81
STEP 10. Check the harness for short circuit to ground
between A/T-ECU connector B-22 terminal 11 and output
shaft speed sensor connector B-107 terminal 2.
Q: Is the harness wire in good condition?
YES : Go to Step 11.
NO : Repair or replace the harness wire.
16DB480A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
A/T
CONTROL
UNIT
AC305353AC
CONNECTOR: B-107
BATTERY
B-107 (GR)
3
2
1
AUTOMATIC TRANSMISSION DIAGNOSIS
AUTOMATIC TRANSMISSION
23A-82
STEP 11. Measure the ground circuit for resistance at the
output shaft speed sensor connector B-107.
(1) Disconnect connector B-107 from the speed sensor and
measure at the harness side.
(2) Measure the resistance between terminal 1 and ground.
• The resistance should measure less than 2 ohms.
Q: Is the measured resistance less than 2 ohms?
YES : Go to Step 16.
NO : Go to Step 12.
AC305353AC
CONNECTOR: B-107
BATTERY
B-107 (GR)
3
2
1
3 2 1
AC210663
B-107 HARNESS
CONNECTOR:
COMPONENT SIDE
AB
AUTOMATIC TRANSMISSION DIAGNOSIS
AUTOMATIC TRANSMISSION
23A-83
STEP 12. Measure the resistance at the A/T-ECU connector
B-22 by using check harness special tool MB992045.
(1) Disconnect all the connectors from the A/T-ECU.
(2) Connect special tool MB992045 (check harness) between
the A/T-ECU and the body-side harness connector.
(3) Turn the ignition switch to the "ON" position.
(4) Measure the resistance between terminal 12 and ground.
• The resistance should measure less than 2 ohms.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured resistance less than 2 ohms?
YES : Go to Step 13.
NO : Go to Step 15.
16DB480A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
A/T
CONTROL
UNIT
10DB161A
A/T-ECU CHECK HARNESS
MB992045
A/T-ECU
A/T-ECU CHECK
HARNESS
CONNECTORS
10DB082A
B-22 CONNECTOR:
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