Mitsubishi Grandis. Manual — part 118

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-469

Inspection Procedure Q-14: All the door switch signals are not received.

CAUTION

Whenever the ECU is replaced, ensure that the
input signal circuit is normal.

Door Switches Input Circuit <LHD>

DOOR
SWITCH
(FRONT: RH)

DOOR
SWITCH
(REAR: RH)

DOOR
SWITCH
(FRONT: LH)

DOOR
SWITCH
(REAR: LH)

ETACS-ECU

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

J/B SIDE

TAILGATE
SWITCH

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-470

COMMENTS ON TROUBLE SYMPTOM

Input signals from all the door switches and tailgate
switch are used to operate the functions below. If the
signal(s) are abnormal, these functions will not work
normally.

• Keyless entry system

• Room lamps

POSSIBLE CAUSES

• Malfunction of the door switches

• Malfunction of the tailgate switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Pulse check
Check the input signal from the driver's door switch.

OK: The MUT-III sounds or the voltmeter
needle fluctuates.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Refer to inspection procedure Q-5 "The
driver's door switch signal is not received
<LH drive vehicles>

P.54B-434

or <RH

drive vehicles>

P.54B-436

."

Door Switches Input Circuit <RHD>

DOOR
SWITCH
(FRONT: LH)

DOOR
SWITCH
(REAR: RH)

DOOR
SWITCH
(FRONT: RH)

DOOR
SWITCH
(REAR: LH)

ETACS-ECU

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

J/B SIDE

TAILGATE
SWITCH

System switch

Check conditions

Driver's door switch

When the driver's door is
opened

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-471

Step 2. Connector check: D-17 (front: LH), D-02
(front: RH), D-08 (rear: RH) or D-13 (rear: LH)
door switch connectors or G-18 tailgate switch
connector, and C-219, C-220 and C-221
ETACS-ECU connector

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-472

AC312054

Connectors: D-13, D-17

D-13

AB

D-17

Harness side

D-17

D-13

<LHD>

AC312054

Connectors: D-13, D-17

D-13

AC

D-17

Harness side

D-17

D-13

<RHD>

AC312052

Connectors: D-02, D-08

D-02

AB

D-08

<LHD>

D-02

D-08

Harness side

AC312059

Connectors: D-02, D-08

D-02

AB

D-02

D-08

D-08

Harness side

<RHD>