Mitsubishi Galant. Manual — part 662

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-43

STEP 3. Check the harness wires between ETACS-ECU
connector C-86 and fusible link (1).
NOTE: After checking junction block connector C-85 and
intermediate connector C-66, check the wires. If junction block
connector C-85 and intermediate connector C-66 are
damaged, repair or replace them. Refer to GROUP 00E,
Harness Connector Inspection

P.00E-2

.

Q: Are the harness wires between ETACS-ECU connector

C-86 and fusible link (1) in good condition?
YES : There is no action to be taken.
NO : Repair them. The central door locking system should

work normally.

AC002299 AC

FUSIBLE LINK (1)

AC003080 AD

JUNCTION BLOCK
(REAR VIEW)

CONNECTOR: C-86

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66

AC003080AF

JUNCTION BLOCK
(REART VIEW)

CONNECTOR: C-85

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-44

STEP 4. Check the junction block connector C-86 for
damage.
Q: Is junction block connector C-86 in good condition?

YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. The central door

locking system should work normally.

STEP 5. Check the harness wires between ETACS-ECU
connector C-86 and intermediate connector C-67.
NOTE: After checking junction block connectors C-84 , check
the wires. If junction block connectors C-84 is damaged, repair
or replace them. Refer to GROUP 00E, Harness Connector
Inspection

P.00E-2

.

Q: Are the harness wires between ETACS-ECU connector

C-86 and intermediate connector C-67 in good
condition?
YES : Replace the ETACS-ECU. The central door locking

system should work normally.

NO : Repair them. The central door locking system should

work normally.

AC003080 AD

JUNCTION BLOCK
(REAR VIEW)

CONNECTOR: C-86

AC003079AF

CONNECTOR
BLOCK (LH)

CONNECTOR: C-67

AC003080 AD

JUNCTION BLOCK
(REAR VIEW)

CONNECTOR: C-86

AC003080 AB

JUNCTION BLOCK
(REAR VIEW)

CONNECTOR: C-84

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-45

Inspection Procedure C-2: Central door locking system: Some doors do not lock or unlock.

Door Lock Actuator Circuit

•

Refer to Inspection Procedure C-1 (

P.54B-40

).

CIRCUIT OPERATION

•

The ETACS-ECU operates the door lock
actuators through its dedicated relay (integrated
in the ETACS-ECU).

•

The ETACS-ECU drives the relay to lock or
unlock the door if the requirements are satisfied.

TECHNICAL DESCRIPTION (COMMENT)
The door lock actuator, or the harness wire between
ETACS-ECU and the door lock actuator may be
defective.

TROUBLESHOOTING HINTS

•

Malfunction of the driver's, front passenger's or
rear door lock actuator

•

Malfunction of the ETACS-ECU

•

Damaged harness wires or connectors

DIAGNOSIS

Required Special Tool:

•

MB991223: Test Harness Set

STEP 1. Check the location of malfunction.

Q: Which door lock does not function?

Driver's door : Go to Step 2.
Front passenger's door : Go to Step 5.
Rear door (LH) : Go to Step 8.
Rear door (RH) : Go to Step 11.

STEP 2. Check the driver's door lock actuator operation.
Remove the driver's door lock actuator to check. (Refer to
GROUP 42, Door

−

Door Handle and Latch

P.42-58

.)

Q: Is the driver's door lock actuator in good condition?

YES : Go to Step 3.
NO : Replace the driver's door lock actuator. All doors

should be locked or unlocked.

ROD POSITION

BATTERY
CONNECTION

ROD
OPERATION

LOCK

4

−

Battery (+)

terminal,
6

−

Battery (

−

)

terminal

LOCK position

→

UNLOCK position

UNLOCK

4

−

Battery (

−

)

terminal,
6

−

Battery (+)

terminal

UNLOCK
position

→

LOCK

position

ACX00543

LOCK

UNLOCK

VIEW A

A

AD

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-46

STEP 3. Check the ETACS-ECU connector C-86 and
driver's door lock actuator connector E-15 for damage.
Q: Are ETACS-ECU connector C-86 and driver's door lock

actuator connector E-15 in good condition?
YES : Go to Step 4.
NO : Repair or replace them. Refer to GROUP 00E,

Harness Connector Inspection

P.00E-2

. All doors

should be locked or unlocked.

AC003080 AD

JUNCTION BLOCK
(REAR VIEW)

CONNECTOR: C-86

AC003086AI

DOOR

CONNECTOR: E-15