2005 MITSUBISHI 380 Workshop Manual

FRONT SEAT ASSEMBLY
INTERIOR52A-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
INTERIOR52A-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
SUPPLY112V
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
INTERIOR52A-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
INTERIOR52A-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

FRONT SEAT ASSEMBLY
INTERIOR52A-28
ACTIVATION OF A MEMORY RECALL
All memory button seat position recalls will be refused while the
vehicle is in any other gear select position other than "PARK" or
"NEUTRAL". Memory recalls are also disabled if vehicle is in
"PARK" or "NEUTRAL" but the vehicle speed is greater than
15km/h (see table below).
IGNITION PARK NEUTRAL >15km/h MEMORY
RECALL
POSSIBLE
N X X N Y
N X X Y N
Y N N X N
Y Y N N Y
Y Y N Y N
Y N Y N Y
Y N Y Y N

FRONT SEAT ASSEMBLY
INTERIOR52A-29
OPERATION CHECK OF POWER SEAT MOTOR
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.
MOTOR DESCRIPTION TERMINAL MEASUREMENT
TRACK/ SLIDE MOTOR BACKWARD 1 MOTOR ON= 12V
MOTOR OFF = GROUND.
FORWARD 2 MOTOR ON= 12V
MOTOR OFF = GROUND.
FRONT LIFT MOTOR UP 1- non memory
5- memoryMOTOR ON= 12V
MOTOR OFF = GROUND.
DOWN 5- non memory
1- memoryMOTOR ON= 12V
MOTOR OFF = GROUND.
REAR LIFT MOTOR UP 1 MOTOR ON= 12V
MOTOR OFF = GROUND.
DOWN 5 MOTOR ON= 12V
MOTOR OFF = GROUND.
RECLINER MOTOR FORWARD 1 MOTOR ON= 12V
MOTOR OFF = GROUND.
BACKWARD 5 MOTOR ON= 12V
MOTOR OFF = GROUND.
LUMBAR MOTOR SOFTER 1 MOTOR ON= 2.5V - 5V
MOTOR OFF = GROUND.
HARDER 2 MOTOR ON= 2.5V - 5V
MOTOR OFF = GROUND.

FRONT SEAT ASSEMBLY
INTERIOR52A-30
1.If abnormality was found, check the power seat
adjuster assembly.
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.

FRONT SEAT ASSEMBLY
INTERIOR52A-31
FAULT DIAGNOSIS
MEMORY SEAT CONTROLLER (MSC)
OPERATION OF DIAGNOSTICS:
The memory seat controller (MSC) stores specific fault codes
for all functions of the (MSC). The diagnostics are specifically
used to identify faults within the seat assembly, and as such will
hinder the operation of the seat.
When a fault is detected in the (MSC), the system will automat-
ically enter into diagnostic mode.
The indicator lamp (LED) will begin to flash in certain sequence
to indicate a diagnostic trouble code (DTC) as shown in the
table below. The indicator lamp (LED) will stop flashing when
the faults have been resolved.
DIAGNOSTIC TROUBLE CODES (DTC’s)
The indicator lamp (LED) transmits a certain sequence flash to
distinguish faults.The DTC sequence for the most recent cur-
rent trouble is flashed twice only. If there are multiple faults
present, you can display the next current DTC by pressing the
memory button 2 before the MSC goes into the sub-active
mode. Once all DTC’s have been cycled through, the most
recent current DTC will be displayed. There will be no history of
DTC’s displayed.