Mitsubishi Outlander GS45X. Manual - part 200

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-797

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

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the 

Scan Tool (M.U.T.-III) 

P.54A-730

."

(2) Turn the ignition switch to the "ON" position.
(3) Check the ETACS data list.

• Set the driver's door to "UNLOCK."

• Set the front passenger's door to "UNLOCK." <vehicles 

with KOS>

(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 <Normal conditions are displayed for all the items> 
: 

No action is necessary and testing is complete.

NO <Normal condition is not displayed for item No.271> 
: 

Go to Step 2.

NO <Normal condition is not displayed for item No.272> 
: 

Go to Step 8.

STEP 2. Check front door lock actuator (LH) connector 
E-21 for loose, corroded or damaged terminals, or 
terminals pushed back in the connector. 
Q: Is front door lock actuator (LH) connector E-21 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

. Check that the input signal of front door lock 

actuator (LH) is normal.

Item No.

Item name

Normal 
condition

Item 271

Dr door unlock 
switch

Unlock

Item No.

Item name

Normal 
condition

Item 272

As door unlock 
switch

Unlock

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-798

STEP 3. Check the front door lock actuator (LH).
Disconnect front door lock actuator (LH) connector E-21. Then 
check continuity between the terminals.

Q: Is the front door lock actuator (LH) in good condition?

YES : Go to Step 4.
NO :  Replace the front door lock actuator (LH). Check that 

the input signal of front door lock actuator (LH) is 
normal.

STEP 4. Check the ground circuit to the front door lock 
actuator (LH). Measure the resistance at front door lock 
actuator (LH) connector E-21.
(1) Disconnect front door lock actuator (LH) connector E-21 

and measure the resistance available at the wiring harness 
side of the connector.

(2) Measure the resistance value between terminal 1 and 

ground.

• The resistance should be 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 6.
NO :  Go to Step 5.

STEP 5. Check the wiring harness between front door lock 
actuator (LH) connector E-21 (terminal 1) and ground.
Check the ground wires for open circuit.
NOTE: Also check intermediate connector C-126 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector C-126 is damaged, repair 
or replace the connector as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between front door lock actuator 

(LH) connector E-21 (terminal 1) and ground in good 
condition?
YES : No action is necessary and testing is complete.
NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. Check that 
the input signal of front door lock actuator (LH) is 
normal.

Lever position

Tester connection Specified 

condition

UNLOCK

1 

− 2

Less than 2 ohms

LOCK

1 

− 2

Open circuit

AC702831AK

Connector E-21
(Harness side)

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-799

STEP 6. Check ETACS-ECU connector C-301 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is ETACS-ECU connector C-301 in good condition?

YES : Go to Step 7.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Check that the input signal of front door lock 

actuator (LH) is normal.

STEP 7. Check the wiring harness between front door lock 
actuator (LH) connector E-21 (terminal 3) and ETACS-ECU 
connector C-301 (terminal 22).
Check the input lines for open circuit and short circuit.
NOTE: Also check intermediate connector C-127 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector C-127 is damaged, repair 
or replace the connector as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between front door lock actuator 

(LH) connector E-21 (terminal 3) and ETACS-ECU 
connector C-301 (terminal 22) in good condition?
YES : Replace the ETACS-ECU. Check that the input signal 

of front door lock actuator (LH) is normal.

NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. Check that 
the input signal of front door lock actuator (LH) is 
normal.

STEP 8. Check front door lock actuator (RH) connector 
E-09 for loose, corroded or damaged terminals, or 
terminals pushed back in the connector.
Q: Is front door lock actuator (RH) connector E-09 in good 

condition?
YES : Go to Step 9.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Check that the input signal of front door lock 

actuator (RH) is normal.

ETACS

TSB Revision

CHASSIS ELECTRICAL

54A-800

STEP 9. Check the front door lock actuator (RH).
Disconnect front door lock actuator (RH) connector E-09. Then 
check continuity between the terminals.

Q: Is the front door lock actuator (RH) in good condition?

YES : Go to Step 10.
NO :  Replace the front door lock actuator (RH). Check that 

the input signal of front door lock actuator (RH) is 
normal.

STEP 10. Check the ground circuit to the front door lock 
actuator (RH). Measure the resistance at front door lock 
actuator (RH) connector E-09.
(1) Disconnect front door lock actuator (RH) connector E-09 

and measure the resistance available at the wiring harness 
side of the connector.

(2) Measure the resistance value between terminal 3 and 

ground.

• The resistance should be 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 12.
NO :  Go to Step 11.

STEP 11. Check the wiring harness between front door 
lock actuator (RH) connector E-09 (terminal 3) and ground.
Check the ground wires for open circuit.
NOTE: Also check intermediate connector C-112 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector C-112 is damaged, repair 
or replace the connector as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between front door lock actuator 

(RH) connector E-09 (terminal 3) and ground in good 
condition?
YES : No action is necessary and testing is complete.
NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. Check that 
the input signal of front door lock actuator (RH) is 
normal.

Lever position

Tester connection Specified 

condition

UNLOCK

2 

− 3

Less than 2 ohms

LOCK

2 

− 3

Open circuit

AC702818 AW

Connector C-309 
(Harness side)