Mitsubishi Grandis. Manual - part 163

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-114

Inspection Procedure C-5: A door can not be locked or unlocked by the central door locking system. 
<LH drive vehicles>

ETACS-ECU

DOOR LOCK
ACTUATOR
(FRONT: LH)

DOOR LOCK
ACTUATOR
(FRONT: RH)

DOOR LOCK
ACTUATOR
(REAR: LH)

DOOR LOCK
ACTUATOR
(REAR: 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 : Gray     R : Red     P : Pink     V : Violet   

DOOR
UNLOCK
RELAY

DOOR
LOCK
RELAY

J/B SIDE

Central Door Lock Circuit <LHD>

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-115

COMMENT ON TROUBLE SYMPTOM

If a door or the tailgate can not be locked or unlocked 
by the central door locking system, the door lock 
actuator or the tailgate lock actuator may be 
defective.

POSSIBLE CAUSES

• Malfunction of the door lock actuator

• Malfunction of the tailgate lock actuator

• Damaged harness wires and connectors

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 : 

Go to Step 10.

Rear left door : 

Go to Step 14.

Step 2. Connector check: F-04 door lock actuator 
(front: LH)

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

Step 3. Check the door lock actuator (front: LH).

Check that the door lock actuator (front: LH) works 
normally. Refer to GROUP 42 

− Door 

P.42-38

.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Replace the door lock actuator (front: LH).

Step 4. Connector check: C-219, C-220 
ETACS-ECU connector

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the defective connector.

AC311150

AC

Connector: F-04 <LHD>

Harness side

F-04(B)

AC310627

Connectors: C-219, C-220 
<LHD>

C-220

AB

C-220

Junction block (Rear view)

Junction block side

C-219

C-219

Harness side

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-116

Step 5. Check the wiring harness from C-219 
ETACS-ECU connector terminal No.12 and C-220 
ETACS-ECU connector No.22 to F-04 door lock 
actuator (front: LH) terminal Nos. 4 and 6.

NOTE: 

Prior to the wiring harness inspection, check 
intermediate connector C-27 and junction block 
connector C-205, and repair if necessary.

• Check the input and output lines for open circuit.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Repair the wiring harness.

Step 6. Connector check: F-17 door lock actuator 
(front: RH) connector

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the defective connector.

Step 7. Check the door lock actuator (front: RH).

Check that the door lock actuator (front: RH) works 
normally. Refer to GROUP 42 

− Door 

P.42-38

.

Q: Is the check result normal?

AC310627

Connectors: C-219, C-220 
<LHD>

C-220

AB

C-220

Junction block (Rear view)

Junction block side

C-219

C-219

Harness side

AC311150

AC

Connector: F-04 <LHD>

Harness side

F-04(B)

AC310613

Connector: C-27 <LHD>

AJ

AC310623

Connector: C-205 <LHD>

AJ

Junction block (Front view)

Harness side

AC311147

AE

Connector: F-17

<LHD>

Harness side

F-17(B)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-117

YES : 

Go to Step 8.

NO : 

Replace the door lock actuator (front: RH).

Step 8. Connector check: C-219 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the defective connector.

Step 9. Check the wiring harness from C-219 
ETACS-ECU connector terminal Nos.12 and 13 to 
F-17 door lock actuator (front: RH) connector 
terminal Nos.4 and 6.

NOTE: 

Prior to the wiring harness inspection, check 
intermediate connector C-14 and junction block 
connector C-205, and repair if necessary.

• Check the input and output lines for open circuit.

Q: Is the check result normal?

AC310626AD

Connector: C-219 <LHD>
Junction block (Rear view)

Junction block side

AC310626AD

Connector: C-219 <LHD>
Junction block (Rear view)

Junction block side

AC311147

AE

Connector: F-17

<LHD>

Harness side

F-17(B)

AC310615

AB

Connector: C-14 <LHD>

AC310623

Connector: C-205 <LHD>

AJ

Junction block (Front view)

Harness side