Mitsubishi Grandis. Manual — part 7

SPECIAL TOOLS

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-25

SPECIAL TOOLS

M1549000300753

SPECIAL TOOLS

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-26

Tool

Number

Name

Use

MB991955
A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991825
F: MB991826

MUT-III sub-assembly
A: Vehicle
Communication
Interface (V.C.I.)
B: MUT-III USB cable
C: MUT-III main
harness A (Vehicles
with CAN
communication
system)
D: MUT-III main
harness B (Vehicles
without CAN
communication
system)
E: MUT-III measure
adapter
F: MUT-III trigger
harness

SWS communication line check
(ECU check and service data)

CAUTION

MUT-III main harness B
(MB991911) should be used.
MUT-III main harness A should
not be used for this vehicle.

MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222

Harness set
A: Check harness
B: LED harness
C: LED harness
adapter
D: Probe

Continuity check and voltage
measurement at harness wire or
connector
A: For checking connector pin
contact pressure
B: For checking power supply
circuit
C: For checking power supply
circuit
D: For connecting a locally
sourced tester

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

A

B

C

D

E

F

DO NOT USED

MB991223

A

B

C

D

AC

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-27

TROUBLESHOOTING

PRIOR TO TROUBLESHOOTING

M1549014700475

Before carrying out troubleshooting, check the
following two items.

• Make sure that the ETACS-ECU, the junction

block (J/B), the front-ECU and the engine
compartment relay box are connected securely.

• Check that the system fuses and fusible links are

not burned out.

STANDARD FLOW OF DIAGNOSTIC
TROUBLESHOOTING

M1549000500661

Refer to GROUP 00

− How to Use

Troubleshooting/Inspection Service Points

P.00-5

.

DIAGNOSTIC FUNCTION

M1549028900137

HOW TO READ DIAGNOSIS CODE

Use the MUT-III to read diagnosis code (Refer to
GROUP 00

− How to Use

Troubleshooting/Inspection Service Points

P.00-5

).

NOTE: Connect the MUT-III to the 16-pin diagnosis
connector (black).

NOTE: A diagnosis code can not be read when the
ETACS-ECU is defective or the power supply voltage
has risen. In this case, refer to inspection procedure
A-1 "Communication with the MUT-III is not possible

P.54B-83

."

HOW TO CHECK INPUT SIGNALS

1. Use the MUT-III or a voltmeter to check input

signals (Refer to GROUP 00

− How to Use

Troubleshooting/Inspection Service Points

P.00-5

).

2. The input signals below can be checked by

connecting the MUT-III or a voltmeter to the
diagnosis connector.

NOTE: If a fault is found at the input signal check,

refer to trouble symptom chart

P.54B-79

.

SWITCHES WHICH ARE APPLICABLE TO
INPUT SIGNAL CHECK, AND THEIR
CHECK CONDITIONS

MB991529

Diagnosis code check
harness

Input signal check by using a
voltmeter

Tool

Number

Name

Use

MB991529

Input signal

Requirements for sounding buzzer

Ignition switch (ACC)

When turned from the LOCK (OFF) position to the
ACC position

Ignition switch (IG1)

When turned from ACC to ON

Back-up lamp switch

When the ignition switch is turned ON and the shift
lever is moved to the R position.

Inhibitor switch ("R" position)

When the ignition switch is turned ON and the
selector lever is moved to the R position.

Key reminder switch <Vehicles with keyless entry
system>

When the inserted ignition key is pulled out

Hazard warning lamp switch

When the switch is turned from off to on

Front fog lamp switch
Rear fog lamp switch
Driver's door switch

When the driver's door is opened

All of the door switches

A door is opened when all the doors are closed

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-28

Tailgate switch

When the tailgate is opened

Driver's door lock actuator

When the driver's key cylinder or inside lock knob is
unlocked or locked

Passenger’s door lock key cylinder switch

When the passenger’s key cylinder is unlocked or
locked

Tailgate key switch <vehicles without keyless entry
system>

When the tailgate key cylinder is unlocked or locked.

Driver’s seat belt switch

When the driver's seat belt is fastened

Passenger’s seat belt switch

When the front passenger is occupied and the seat
belt is fastened

Electric-folding outside mirror switch

When the electric-folding outside mirror is operated

Vehicle speed signal

When the vehicle speed has reached 10 km/h or
more

Column switch

Tail lamp switch

When the lighting switch is moved from the automatic
lamp position to the tail lamp position.

Headlamp switch

When the lighting switch is moved from the tail lamp
position to the automatic lamp position.

Dimmer switch

When the switch is turned from off to on

Passing lamp switch
Turn-signal lamp switch (LH)
Turn-signal lamp switch (RH)
Wind shield mist wiper switch
Headlamp washer switch
Windshield intermittent wiper
switch
Windshield low-speed wiper
switch
Windshield high-speed wiper
switch
Windshield intermittent wiper
volume

When the windshield intermittent wiper volume is
rotated from "FAST" to "SLOW" (a pulse is sent
around the volume middle position)

Windshield washer switch

When the switch is turned from off to on

Rear wiper switch
Rear washer switch

Keyless entry
transmitter

Switches

When the switch is turned from off to on

Interior lamp loaded signal <Vehicles for keyless
entry system>

When a load is applied through multi-purpose fuse
No.18

Input signal

Requirements for sounding buzzer