Mitsubishi Outlander XL. Manual - part 723

CENTRAL DOOR LOCKING SYSTEM DIAGNOSIS

TROUBLESHOOTING STRATEGY

M14203000067USA0000010001

Refer  to  GROUP  00,  How  to  Use  Troubleshooting/Inspection
Service Points, Troubleshooting Contents P.00-6.

TROUBLE SYMPTOM CHART <CENTRAL DOOR LOCKING SYSTEM>

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During  diagnosis,  a  diagnostic  trouble  code
associated with other system may be set when the
ignition  switch  is  turned  on  with  connector(s)

disconnected. On completion, check all systems
for  diagnostic  trouble  code(s).  If  diagnostic
trouble code(s) are set, erase them all.

Trouble symptom

Inspection
procedure
number

Reference
page

Central door locking system does not work at all.

A-1

 P.42Ab-11

A door or a liftgate cannot be locked or unlocked by the central door locking
system.

A-2

 P.42Ab-14

The liftgate does not open.

A-3

 P.42Ab-25

Selector "P" position-linked door unlock function does not operate.

A-4

 P.42Ab-31

INPUT SIGNAL CHART <CENTRAL DOOR LOCKING SYSTEM>

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Trouble symptom

Inspection
procedure
number

Reference
page

The liftgate lock release handle signal is not received.

B-1

 P.42Ab-33

SYMPTOM PROCEDURES

INSPECTION PROCEDURE A-1: Central Door Locking System does not Work at All.

M14203000916USA0000010000

Before replacing the ECU, ensure that the power
supply  circuit,  the  ground  circuit  and  the
communication circuit are normal.

DOOR

42Ab-11

CENTRAL DOOR LOCKING SYSTEM DIAGNOSIS

ZC600616

ETACS
-ECU

FUSIBLE
LINK

37

DOOR
LOCK
RELAY

DRIVER'S
DOOR
UNLOCK
RELAY

PASSENGER'S
DOOR
UNLOCK
RELAY

LIFTGATE
LOCK
RELAY

RED

RED

FRONT DOOR LOCK ACTUATOR, REAR DOOR 
LOCK ACTUATOR AND LIFTGATE LOCK ACTUATOR

0000

Central Door Lock Power Supply Circuit

ZC600878

Connector: C-309

C-309 (B)

0009

CIRCUIT OPERATION

｠

The  ETACS-ECU  controls  the  central  door  lock
system,  locking  or  unlocking  all  the  doors  by

activating the central door lock relay (built into the
ETACS-ECU). The ETACS-ECU uses inputs from
the following components:

｠

Door lock actuator

｠

Door lock key cylinder switch

｠

Door lock switch, which is incorporated in the
power  window  main  switch  or  power  window
sub switch

TROUBLESHOOTING HINTS

｠

The wiring harness or connectors may have loose,
corroded,  or  damaged  terminals,  or  terminals
pushed back in the connector

｠

The ETACS-ECU may be defective

DIAGNOSTIC PROCEDURE

Required Special Tools:

｠

MB991223: Harness Set

｠

MB992006: Extra Fine Probe

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicles Communication Interface (V.C.I.)

｠

MB991827: M.U.T.-III USB Cable

42Ab-12

DOOR

CENTRAL DOOR LOCKING SYSTEM DIAGNOSIS

｠

MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, check data list.
Check the input signals from the front door lock actuators.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958. Refer to "How to connect the
Scan Tool (M.U.T.-III) P.54Ad-5."

(2)

Turn the ignition switch to the "ON" position.

(3)

Check the ETACS data list.

｠

Set the driver's door to "UNLOCK."

Item No.

Item name

Normal
condition

Item 271

Dr  door  unlock
switch

Unlock

｠

Set  the  front  passenger's  door  to  "UNLOCK."  <vehicles
with KOS>

Item No.

Item name

Normal
condition

Item 272

As door unlock
switch

Unlock

(4)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Are normal conditions displayed on the "Dr door unlock

switch" and "As door unlock switch"?

YES:

 Go to Step 2.

NO:

 Refer to GROUP 54Ad, Inspection Procedure 4: ETACS-

ECU does not receive any signal from the front door lock
actuator P.54Ad-67.

STEP 2. Check ETACS-ECU connector C-309 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.

Q:Is ETACS-ECU connector C-309 in good condition?

YES:

 Go to Step 3.

NO:

 Repair or replace the damaged component(s). Refer to

GROUP 00E, Harness Connector Inspection P.00E-2. Verify
that the central door locking system works normally.

STEP 3. Check the wiring harness between ETACS-ECU
connector C-309 (terminal 2) and fusible link (37).

Q:Is  the  wiring  harness  between  ETACS-ECU  connector

C-309 (terminal 2) and fusible link (37) in good condition?

YES:

 Go to Step 4.

NO:

 The wiring harness may be damaged or the connector

may have loose, corroded or damaged terminals, or
terminals pushed back in the connector. Repair the wiring
harness as necessary. Verify that the central door
locking system works normally.

DOOR

42Ab-13

CENTRAL DOOR LOCKING SYSTEM DIAGNOSIS

STEP 4. Retest the system.
Check that the central door locking system works normally.

Q:Is the check result normal?

YES:

 No action is necessary and testing is complete.

NO:

 Replace the ETACS-ECU. Check that the central door

locking system normally.

INSPECTION PROCEDURE A-2: A Door or A Liftgate cannot be Locked or Unlocked by
The Central Door Locking System.

M14203000917USA0000010000

Before replacing the ECU, ensure that the power
supply  circuit,  the  ground  circuit  and  the
communication circuit are normal.

42Ab-14

DOOR

CENTRAL DOOR LOCKING SYSTEM DIAGNOSIS