Mitsubishi Galant. Manual — part 706

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-219

Inspection Procedure N-9: The driver's or front passenger's door lock actuator switch is not sent to
the ETACS-ECU.

Driver's or Front Passenger's Door Lock Actuator Switch Input Circuit

AC004242

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-220

AC004243

Rear Door Lock Actuator Switch Input Circuit <Vehicles with Theft-alarm System Only>

AC003079AL

CONNECTOR
BLOCK (LH)

CONNECTORS: C-67, C-68

C-67

C-68

AC003415 AE

CONNECTORS: C-71, C-72

CONNECTOR
BLOCK (RH)

C-71

C-72

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-221

CIRCUIT OPERATION
The ETACS-ECU uses the input signal from the
driver's, front passenger's, rear and back door lock
actuator switch to operate the following functions.

TECHNICAL DESCRIPTION (COMMENT)
<Driver's door lock actuator switch>
The input signal from the driver's door lock actuator
switch is used to operate the following systems or
functions:

•

Central door locking system

•

Forgotten key prevention function

•

Keyless entry system <vehicles with keyless
entry system>

•

Dome light dimming function

•

Theft-alarm system <vehicles with theft-alarm
system>

If the signal fails, these systems or function will not
work normally.

TECHNICAL DESCRIPTION (COMMENT) <Front
passenger's door lock actuator switch>
The input signal from the front passenger's door lock
actuator switch is used to operate the following
systems or functions:

•

Forgotten key prevention function

•

Theft-alarm system <vehicles with theft-alarm
system>

If the signal fails, these systems or function will not
work normally.

TECHNICAL DESCRIPTION (COMMENT) <Rear
door lock actuator switch>
The input signal from the rear door lock actuator
switch is used to operate the Theft-alarm system
<vehicles with theft-alarm system> or function.If the
signal fails, these systems or function will not work
normally.

TROUBLESHOOTING HINTS

•

Malfunction of the driver's or front passenger's
door latch assembly

•

Malfunction of the rear door latch assembly

•

Malfunction of the ETACS-ECU

•

Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:

•

MB991223: Test Harness Set

•

MB991502: Scan Tool (MUT-II)

•

MB991529: Diagnostic Trouble Code Check Harness

AC003082 AJ

JUNCTION BLOCK
(FRONT VIEW)

CONNECTOR: C-81

AC003084 AG

D-07

D-19

CONNECTORS: D-07, D-19

AC003086AG

DOOR

CONNECTORS: E-07, E-10, E-11, E-15

E-15

E-07

E-11

E-10

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-222

STEP 1. Check the location of malfunction.

Q: Which door lock actuator switch signal is not input?

Driver's door : Go to Step 2.
Front passenger's door : Go to Step 8.
Rear door (LH) : Go to Step 14.
Rear door (RH) : Go to Step 20.

STEP 2. Check the driver's door lock actuator switch.

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

condition?
YES : Go to Step 3.
NO : Replace it. The input signal from the driver's door lock

actuator switch should be able to be checked and the
functions, which are described in the "Technical
Description (comment)," should work normally.

STEP 3. Check the driver's door lock actuator switch
ground circuit at driver's door lock actuator switch
connector E-15
(1)Disconnect driver's door lock actuator switch connector E-

15 and measure at the harness side.

(2)Measure the resistance between terminal 1 and ground.

Q: Is the resistance less than 2 ohm?

YES : Go to Step 6.
NO : Go to Step 4.

STEP 4. Check driver's door lock actuator switch
connector E-15 for damage.
Q: Is driver's door lock actuator switch connector E-15 in

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

Connector Inspection. The input signal from the
driver's door lock actuator switch should be able to be
checked and the functions, which are described in the
"Technical Description (comment)," should work
normally.

ROD POSITION

TESTER
CONNECTION

SPECIFIED
CONDITION

LOCK

1

−

3

Continuity

UNLOCK

1

−

2

Continuity

ACX00543

LOCK

UNLOCK

VIEW A

A

AD

5

4

3

2

1

6

ACX01603AD

CONNECTOR E-15
(HARNESS SIDE)

AC003086AI

DOOR

CONNECTOR: E-15