Mitsubishi L200. Manual - part 504

DOOR

BODY

42-76

Inspection Procedure A-3: A Door cannot be Locked or Unlocked by the Central Door Locking System 
<RH drive vehicles>.

AC809133

<DOUBLE CAB>

FRONT 
DOOR LOCK
ACTUATOR 
(LH)

REAR 
DOOR LOCK
ACTUATOR 
(LH)

ETACS-
ECU

REAR 
DOOR LOCK
ACTUATOR 
(RH)

Wire colour code
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue
BR : Brown     O : Orange     GR : Grey     R : Red     P : Pink     V : Violet     PU : Purple

FRONT 
DOOR LOCK
ACTUATOR 
(RH)

DOOR

UNLOCK

RELAY

DOOR

LOCK

RELAY

Central Door Lock Circuit <RHD>

AC

C-121

C-122

C-122

W-G

COMMENT ON TROUBLE SYMPTOM
If a door cannot be locked or unlocked by the central 
door locking system, the door lock actuator may be 
defective.

PROBABLE CAUSES

• Malfunction of the door lock actuator

• Damaged harness wires and connectors

DOOR

BODY

42-77

DIAGNOSIS PROCEDURE

STEP 1. Confirm which door lock actuator is 
defective.

Q: Which door fails to lock correctly?

Driver's door : 

Go to Step 2.

Front passenger's door : 

Go to Step 6.

Rear right door <Double cab> : 

Go to Step 10.

Rear left door <Double cab> : 

Go to Step 14.

STEP 2. Connector check: E-04 front door lock 
actuator (RH) connector

AC509954AF

Harness side

E-04 (B)

Connector: E-04 <RHD>

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

STEP 3. Check the front door lock actuator (RH)
Check that the front door lock actuator (RH) works 
normally. Refer to 

P.42-194

.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Replace the front door lock actuator (RH).

STEP 4. Connector check: C-220 ETACS-ECU 
connector

AC509943

Connector: C-220 <RHD>

AD

Junction block
 (Rear view)

Harness side

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the defective connector.

STEP 5. Check the wiring harness between C-220 
ETACS-ECU connector terminal Nos. 21, 23 and 
E-04 front door lock actuator (RH) connector 
terminal Nos. 6, 4.

AC509943

Connector: C-220 <RHD>

AD

Junction block
 (Rear view)

Harness side

AC509954AF

Harness side

E-04 (B)

Connector: E-04 <RHD>

NOTE: 

AC509930AJ

Connector: C-32 <RHD>

C-32 (GR)

AC903868

AG

Connector: C-122 <RHD>

Harness side

Prior to the wiring harness inspection, check interme-
diate connector C-122 and junction block connector 
C-32, and repair if necessary.

• Check the power supply line for open and short 

circuit.

Q: Is the check result normal?

DOOR

BODY

42-78

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00, How to 
use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Repair the wiring harness.

STEP 6. Connector check: E-15 front door lock 
actuator (LH) connector

AC509952

Connector: E-15 <RHD>

AF

Harness side

E-15 (B)

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the defective connector.

STEP 7. Check the front door lock actuator (LH).
Check that the front door lock actuator (LH) works 
normally. Refer to 

P.42-194

.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Replace the front door lock actuator (LH).

STEP 8. Connector check: C-220 ETACS-ECU 
connector

AC509943

Connector: C-220 <RHD>

AD

Junction block
 (Rear view)

Harness side

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the defective connector.

STEP 9. Check the wiring harness between C-220 
ETACS-ECU connector terminal Nos. 22, 23 and 
E-15 front door lock actuator (LH) connector 
terminal Nos. 6, 4.

AC509943

Connector: C-220 <RHD>

AD

Junction block
 (Rear view)

Harness side

AC509952

Connector: E-15 <RHD>

AF

Harness side

E-15 (B)

NOTE: 

AC509930BW

Connectors: C-32, C-133 <RHD>

C-32 (GR)

C-32 (GR)

C-133

C-133

Prior to the wiring harness inspection, check interme-
diate connector C-133 and junction block connector 
C-32, and repair if necessary.

• Check the power supply line for open and short 

circuit.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00, How to 
use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Repair the wiring harness.

DOOR

BODY

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STEP 10. Connector check: E-07 rear door lock 
actuator (RH) connector

AC509958AB

Harness side

E-07 (B)

Connector: E-07

Q: Is the check result normal?

YES : 

Go to Step 11.

NO : 

Repair the defective connector.

STEP 11. Check the rear door lock actuator (RH).
Check that the rear door lock actuator (RH) is in 
good condition. Refer to 

P.42-194

.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Replace the tailgate lock actuator.

STEP 12. Connector check: C-220 ETACS-ECU 
connector

AC509943

Connector: C-220 <RHD>

AD

Junction block
 (Rear view)

Harness side

Q: Is the check result normal?

YES : 

Go to Step 13.

NO : 

Repair the defective connector.