Mitsubishi Galant (2004+). Manual — part 667

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-219

STEP 10. Check the harness for an open circuit or short
circuit to ground between A/T control relay connector
B-16X terminal 4 in the engine component relay box and
A/T control solenoid valve assembly connector B-108
terminal 9.

Q: Is the harness wire in good condition?

YES : Go to Step 11.
NO : Repair or replace the harness wire.

AC306354

RELAY BOX

AB

CONNECTOR: B-16X

2

1

3

4

FRONT OF
VEHICLE

AC306322

CONNECTOR: B-108

B-108 (GR)

AC

TRANSMISSION
RANGE SWITCH

2

7

1

8

3

9

4

6

10

5

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-220

STEP 11. Check PCM connector B-21 and A/T control
solenoid valve assembly connector B-108 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

P.00E-2

.

AC306248AC

B-21
(B)

CONNECTOR: B-21

PCM

AIR
CLEANER

73

80

54

67

60

71 72

77 78 79

64

51

59

58

65

52

66

53

75

74

76

81 82

83

63

JAE

62

68

61

55

69

56

70

57

AC306322

CONNECTOR: B-108

B-108 (GR)

AC

TRANSMISSION
RANGE SWITCH

2

7

1

8

3

9

4

6

10

5

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-221

STEP 12. Check the harness for an open or short circuit to
ground between PCM connector B-21 (terminals 65, 66 and
55) and A/T control solenoid valve assembly connector
B-108 (terminals 3, 4 and 5).

Q: Are the harness wires in good condition?

YES : Go to Step 13.
NO : Repair or replace the harness wire.

AC306248AC

B-21
(B)

CONNECTOR: B-21

PCM

AIR
CLEANER

73

80

54

67

60

71 72

77 78 79

64

51

59

58

65

52

66

53

75

74

76

81 82

83

63

JAE

62

68

61

55

69

56

70

57

AC306322

CONNECTOR: B-108

B-108 (GR)

AC

TRANSMISSION
RANGE SWITCH

2

7

1

8

3

9

4

6

10

5

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-222

STEP 13. Check the harness for an open or short circuit to
ground between A/T control solenoid valve assembly
connector B-108 (terminals 3, 4, 5, and 9) and solenoid
valve connectors B-108-1, B-108-2 and B-108-3.

Q: Is the harness wire in good condition?

YES : Replace the PCM.
NO : Replace the harness wire.

DTC 34 (P0768): Overdrive Solenoid Valve System

.

Solenoid Valve System Circuit
Refer to

P.23A-188

.

.

CIRCUIT OPERATION
Refer to

P.23A-188

.

.

DESCRIPTIONS OF MONITOR METHODS

• If solenoid terminal voltage is below specified

value when shift control is not in progress, PCM
judges that overdrive solenoid valve 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 32 (P0758): Underdrive solenoid malfunc-

tion

• DTC 33 (P0763): Second 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

• Underdrive solenoid

• Second solenoid

• A/T control relay

.

AC306322

CONNECTOR: B-108

B-108 (GR)

AC

TRANSMISSION
RANGE SWITCH

2

7

1

8

3

9

4

6

10

5

AC002219

CONNECTORS: B-108-1, B-108-2, B-108-3

CD

B-108-1

B-108-2

B-108-3

VALVE BODY
ASSEMBLY