Mitsubishi 380. Manual - part 129

FRONT SEAT ASSEMBLY

INTERIOR

52A-24

6-WAY TRACK (NON MEMORY)

NOTE: The special tool (Inspection test harness) MB991219 
for connector pin contact pressure should be used. The test 
probe should never be forcibly inserted, as it may cause a 
defective contact.

8 and 10-WAY TRACK (NON MEMORY)

NOTE: The special tool (Inspection test harness) MB991219 
for connector pin contact pressure should be used. The test 
probe should never be forcibly inserted, as it may cause a 
defective contact.

               SWITCH POSITION

TEST CONNECTION          SPECIFIED CONDITION

SWITCH

MOTOR

REAR LIFT MOTOR

UP

2

1

Less than 2 ohms

DOWN

3

5

Less than 2 ohms

FRONT LIFT MOTOR

UP

1

1

Less than 2 ohms

DOWN

4

5

Less than 2 ohms

TRACK/ SLIDE MOTOR

FORWARD

5

2

Less than 2 ohms

BACK

8

1

Less than 2 ohms

               SWITCH POSITION

TEST CONNECTION          SPECIFIED CONDITION

SWITCH

MOTOR

REAR LIFT MOTOR

UP

7

1

Less than 2 ohms

DOWN

8

5

Less than 2 ohms

FRONT LIFT MOTOR

UP

6

1

Less than 2 ohms

DOWN

9

5

Less than 2 ohms

TRACK/ SLIDE MOTOR

FORWARD

10

2

Less than 2 ohms

BACK

3

1

Less than 2 ohms

RECLINING MOTOR

FORWARD

4

1

Less than 2 ohms

BACK

2

5

Less than 2 ohms

FRONT SEAT ASSEMBLY

INTERIOR

52A-25

MEMORY SEAT DIAGNOSIS

POWER SEAT SUPPLY AND GROUND CONNECTOR (D-40)

SPECIAL TOOL:

• MB991219:  Inspection Test Harness

CIRCUIT DIAGRAMS:

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

NOTE: Check connectors and terminals for damage or 
loose connections at the seat harness and all supply 
circuits connections to seat. Repair or replace wiring 
harness if damaged.

NOTE: The special tool (Inspection test harness) MB991219 
for connector pin contact pressure should be used. The test 
probe should never be forcibly inserted, as it may cause a 
defective contact.

10-WAY TRACK (MEMORY)- SOURCE TO (MSC) POWER 
CONNECTOR (D-38)

NOTE: The special tool (Inspection test harness) MB991219 
for connector pin contact pressure should be used. The test 
probe should never be forcibly inserted, as it may cause a 
defective contact.

 SUPPLY

TEST 
CONNECTION 
(D-40)

         SPECIFIED CONDITION

BATTERY 
SUPPLY

1

12V

GROUND

2

Less than 2 ohms or 0V

      CIRCUIT        
DESCRIPTION

                          TEST CONNECTION

 (MSC) 
POWER 
(D-38)

         SOURCE

INTERMEDIATE 
CONNECTOR

GROUND

1

GROUND 15

-

"NEUTRAL"

2

A/T-ECU (B-19)  31

(B-25)  pin 9

Bus LT

3

-

-

IGNITION- LED ON

4

(IGN 2) J/B fuse 9

(C-28)  pin 35

DOOR SW.- LED ON

5

RH Door sw. (D-34)  2

-

VEHICLE SPEED

6

A/T-ECU (B-19)  24

(C-25)  pin 8

"PARK"

7

A/T-ECU (B-19)  30

(C-25)  pin 10

N.C

-

-

-

FRONT SEAT ASSEMBLY

INTERIOR

52A-26

10-WAY TRACK (MEMORY)-switch to module- 20 pin

CIRCUIT DIAGRAMS:

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

NOTE: Check connectors and terminals for damage or 
loose connections at the seat harness and all supply 
circuits connections to seat. Repair or replace wiring 
harness if damaged.

NOTE: The special tool (Inspection test harness) MB991219 
for connector pin contact pressure should be used. The test 
probe should never be forcibly inserted, as it may cause a 
defective contact.

10-WAY TRACK (MEMORY) 12pin connector (A) at module 
to motor circuits

NOTE: The special tool (Inspection test harness) MB991219 
for connector pin contact pressure should be used. The test 
probe should never be forcibly inserted, as it may cause a 
defective contact.

               SWITCH POSITION

TEST CONNECTION          SPECIFIED CONDITION

SWITCH

  (MSC) 
MODULE 
20 PIN

REAR LIFT MOTOR

UP

7

16

Less than 2 ohms

DOWN

8

13

Less than 2 ohms

FRONT LIFT MOTOR

UP

6

5

Less than 2 ohms

DOWN

9

7

Less than 2 ohms

TRACK/ SLIDE MOTOR

FORWARD

10

4

Less than 2 ohms

BACK

3

3

Less than 2 ohms

RECLINING MOTOR

FORWARD

4

14

Less than 2 ohms

BACK

2

2

Less than 2 ohms

               SWITCH POSITION

TEST CONNECTION          SPECIFIED CONDITION

(MSC) 
MODULE 
12 PIN(A)

 MOTOR

REAR LIFT MOTOR

UP

2

1

Less than 2 ohms

DOWN

3

5

Less than 2 ohms

FRONT LIFT MOTOR

UP

11

5

Less than 2 ohms

DOWN

10

1

Less than 2 ohms

TRACK/ SLIDE MOTOR

FORWARD

4

2

Less than 2 ohms

BACK

9

1

Less than 2 ohms

FRONT SEAT ASSEMBLY

INTERIOR

52A-27

10-WAY TRACK (MEMORY) lumbar switch to module 
(20-pin)

CIRCUIT DIAGRAMS:

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

NOTE: Check connectors and terminals for damage or 
loose connections at the seat harness and all supply 
circuits connections to seat. Repair or replace wiring 
harness if damaged.

NOTE: The special tool (Inspection test harness) MB991219 
for connector pin contact pressure should be used. The test 
probe should never be forcibly inserted, as it may cause a 
defective contact.

10-WAY TRACK (MEMORY) lumbar and recline module 
connector (12-pin) to motors

NOTE: The special tool (Inspection test harness) MB991219 
for connector pin contact pressure should be used. The test 
probe should never be forcibly inserted, as it may cause a 
defective contact.

               SWITCH POSITION

TEST CONNECTION          SPECIFIED CONDITION

SWITCH

 (MSC) 
MODULE

LUMBAR SWITCH

SOFTER

2

12 (20pin) Less than 2 ohms

HARDER

4

6 (20pin)

Less than 2 ohms

MEMORY

3

6 (16pin)

Less than 2 ohms

               SWITCH POSITION

TEST CONNECTION          SPECIFIED CONDITION

 (MSC) 
MODULE 
12 PIN

 MOTOR

LUMBAR MOTOR

SOFTER

7

1

Less than 2 ohms

HARDER

2

2

Less than 2 ohms

RECLINER MOTOR

FORWARD

1

1

Less than 2 ohms

BACK

8

5

Less than 2 ohms