Mitsubishi Grandis. Manual - part 197

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-250

ELECTRIC RETRACTABLE REMOTE 
CONTROLLED DOOR MIRROR

Inspection Procedure J-1: 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.

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-251

Door Mirror Relay Circuit <LHD>

FUSIBLE LINK 

ETACS-ECU

J/B SIDE

DOOR MIRROR
ASSEMBLY (LH)

30

DOOR MIRROR
ASSEMBLY (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 
MIRROR 
FOLD RELAY

DOOR 
MIRROR 
UNFOLD RELAY

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-252

COMMENTS ON TROUBLE SYMPTOM

If the electric retractable remote controlled door 
mirror does not work at all, these power supply 
circuit(s), these earth circuit(s), remote controlled 
mirror switch or ETACS-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the remote controlled mirror switch

• Malfunction of ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. ECU check on the SWS monitor.

Check that the power supply and earth lines to the 
ETACS-ECU and the SWS communication lines are 
normal.

• Ignition switch: ACC

ECU TO BE CHECKED

• ETACS ECU

OK: "OK" is displayed on the "ETACS ECU" 
menu.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Inspection Procedure A-3 
"Communication with the ETACS-ECU is 
not possible 

P.54C-63

."

Door Mirror Relay Circuit <RHD>

FUSIBLE LINK 

ETACS-ECU

J/B SIDE

DOOR MIRROR
ASSEMBLY (LH)

30

DOOR MIRROR
ASSEMBLY (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   

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-253

Step 2. SWS monitor data list.

Check the SWS communication signal, which are 
related to the electric retractable remote controlled 
mirror.

<Selected item> ETACS ECU

• Ignition switch: ACC

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

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

P.54C-456

."

Step 3. ETACS switch data by using the SWS 
monitor

Check the ETACS-ECU signal, which is related to 
the electric retractable remote controlled mirror.

• Remote controlled mirror switch 

(folding/unfolding switch): ON

OK: Normal condition is displayed

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

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

P.54C-549

."

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

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector.

Step 5. Voltage measurement at the C-219 
ETACS-ECU connector.

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

Item No.

Item name

Normal 
conditions

Item 31

IG SW (ACC)

ON

Item No.

Item name

Normal 
conditions

Item 14

EL RET MIR SW

ON

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