Mitsubishi Grandis. Manual - part 64

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-253

All the signals are received normally. : 

Go to Step 

2.

The ignition switch (ACC) signal is not received. : 

Refer to inspection procedure Q-1 "The 
ignition switch (ACC) signal is not received 

P.54C-456

."

The electric remote controlled mirror switch 
(folding/unfolding switch) signal is not received. : 

Refer to inspection procedure Q-21 "Signal 
is not received from the electric remote 
controlled mirror switch (folding/unfolding 
switch) 

P.54B-510

."

Step 2. Connector check: C-219 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the connector.

Step 3. Voltage measurement at the C-219 
ETACS-ECU connector.

(1) Remove the ETACS-ECU, and measure at the 

junction block side.

(2) Check the voltage between the C-219 

ETACS-ECU connector terminal No.2 and body 
earth.

OK: Battery positive voltage

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

AC310626AD

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

Junction block side

AC310620

Connector: C-219

Junction block 
(Rear view)

<RHD>

AB

Junction block side

AC310626AD

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

Junction block side

AC310620

Connector: C-219

Junction block 
(Rear view)

<RHD>

AB

Junction block side

AC310507CC

Connector C-219 
(Junction block side)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-254

Step 4. Check the wiring harness between C-219 
ETACS-ECU connector terminal No.2 and the 
fusible link (30).

NOTE: 

Prior to the wiring harness inspection, check 
intermediate connectors C-125 and junction block 
connector C-204, and repair if necessary.

• Check the power supply line to the battery 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.

AC310626AD

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

Junction block side

AC310620

Connector: C-219

Junction block 
(Rear view)

<RHD>

AB

Junction block side

AC310613

AD

Connector: C-125 <LHD>

AC310628AB

Connector: C-125 <RHD>

AC310623

Connector: C-204 <LHD>

AI

Junction block (Front view)

Harness side

C-204(B)

AC310618

Connector: C-204 <RHD>

AI

Junction block (Front view)

Harness side

C-204(B)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-255

Step 5. Retest the system.
The electric retractable remote controlled mirror 
should now work normally at all.

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 : 

Replace the ETACS-ECU.

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-256

Inspection Procedure J-2: Left or right side electric retractable remote controlled door mirror does 
not work at all.

CAUTION

Whenever the ECU is replaced, ensure that the 
input and output signal circuits are normal.

Electric Retractable Remote Controlled Mirror Circuit <LHD>

ETACS-ECU

DOOR MIRROR
ASSEMBLY (RH)

CPU

CPU

DOOR MIRROR
ASSEMBLY (LH)

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   

RETRACTOR 
MOTOR

FUSIBLE LINK

30

J/B SIDE

RETRACTOR 
MOTOR

DOOR 
MIRROR 
FOLD RELAY

DOOR 
MIRROR 
UNFOLD RELAY