2005 MITSUBISHI 380 seat memory

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-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.

FRONT SEAT ASSEMBLY
INTERIOR52A-32
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.
ERASING DIAGNOSTIC TROUBLE CODES (DTC’s)
The Memory Seat Controller will temporarily store DTC’s when
incorrect operating conditions are detected. The DTC’s are
self-clearing as soon as each fault condition is rectified and
returns to normal operating function. LED FLASH
SEQUENCEFAULT CONDITION
DETECTEDPOSSIBLE CAUSE
2 then 1 No fore lift motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
2 then 2 No aft lift motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
2 then 3 No track motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
2 then 4 No pedal motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
2 then 5 No recliner motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
2 then 6 No lumbar motor sensor Connection at motor sensor
or open/ short circuit in
wiring harness.
3 then 1 Button stuck MEMORY Button switch cap stuck on
side cover
3 then 2 Manual Button stuck position Button switch cap stuck on
side cover
6 then 3 Power relay welded shut Grime on contact

FRONT SEAT ASSEMBLY
INTERIOR52A-36
DISASSEMBLY STEPS
<>HEADREST
1. HINGE COVER
2. INNER SEAT BELT
3. MANUAL RECLINER ADJUSTER
(VEHICLES WITH MANUAL
RECLINER)
4. SIDE SHIELD COVER
5. POWER RECLINER ADJUSTER
(VEHICLES WITH POWER
RECLINER)
6. SEAT HEIGHT ADJUSTER
KNOB
7. MAIN POWER SWITCH
8. LUMBAR POWER SWITCH
(VEHICLES WITH POWER
RECLINER)
9. MEMORY BUTTON MODULE
(VEHICLES WITH MEMORY
SEATS)
10. SIDE SHIELD MOUNT BRACKET
11. FRONT SEAT BACK ASSEMBLY
12. CUSHION ASSEMBLY13. SEAT CUSHION COVER
14. SEAT CUSHION PAD
15. SEAT CUSHION FRAME
16. SEAT BACK PANEL
17. SIDE AIRBAG MODULE
<>18. HEADREST GUIDE
19. MANUAL LUMBAR ADJUSTER
HANDLE
<>20. SEAT BACK COVER
21. SEAT BACK PAD
22. LUMBAR ASSEMBLY
23. RECLINER LEVER RETURN
SPRING
24. RECLINER LEVER SHAFT
25. SEAT BACK PATCH HARNESS
(VEHICLES FITTED WITH
POWER SEAT BACK)
26. SEAT BACK FRAME
27. SEAT POWER HARNESS
28. SEAT SLIDE ADJUSTERDISASSEMBLY STEPS