Mitsubishi Grandis. Manual — part 347

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-7

IGNITION SWITCH

SPECIAL TOOLS

M1543000602031

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-8

Tool

Number

Name

Application

MB990784

Ornament remover

Steering column cover
removal

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

MUT-III
sub-assembly

A: (V. C.I.) Vehicle

communication
interface

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

Measurement
adapter

F: MUT-III Trigger

harness

Diagnosis code check

CAUTION

For vehicles with CAN
communication, use MUT-III
main harness A to send
simulated vehicle speed. If
you connect MUT-III main
harness B instead, the CAN
communication does not
function correctly.

MB990784

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

A

B

C

D

E

F

DO NOT USED

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-9

TROUBLESHOOTING

IGNITION SWITCH

M1543000701198

The ignition switch is controlled by the Smart Wiring
System (SWS). For troubleshooting, refer to
respective Groups below.

• Not using SWS monitor: GROUP 54B,

Troubleshooting

P.54B-74

.

• Using SWS monitor: GROUP 54C,

Troubleshooting

P.54C-44

.

IMMOBILIZER
STANDARD FLOW OF DIAGNOSIS
TROUBLESHOOTING

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

P.00-5

.

DIAGNOSTIC FUNCTION

M1543007000647

HOW TO READ DIAGNOSIS CODE

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

P.00-5

.

HOW TO ERASE DIAGNOSIS CODE

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

P.00-5

.

ENCRYPTED CODE REGISTRATION CRITERIA TABLE

M1543026000033

The ignition key contains a transponder (small
transmitter), which retains an unique encrypted code.
Under any of the conditions below, the encrypted
code should be registered in the immobilizer-ECU
again. The immobilizer-ECU can retain maximum
eight different encrypted codes. This means that
maximum eight ignition keys can be registered.

MB991223

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

Harness set

A: Test harness
B: LED harness
C: LED harness

adapter

D: Probe

Making voltage and
resistance measurements
during troubleshooting

A: Connect pin contact

pressure inspection

B: Power circuit inspection
C: Power circuit inspection
D: Commercial tester

connection

Tool

Number

Name

Application

MB991223

A

B

C

D

AC

Component to be replaced

Engine-ECU <M/T>
or Engine-A/T-ECU
<A/T>

Immobilizer-ECU

Ignition key

When engine-ECU <M/T> or
engine-A/T-ECU <A/T> is
replaced

−

Should not be
replaced

Should not be replaced
Should be registered
again

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-10

NOTE:

*

: When the engine-ECU <M/T> or

engine-A/T-ECU <A/T> other than immobilizer
system is rewritten, it is not necessary to register the
ignition key again.

CHART CLASSIFIED BY DIAGNOSIS
CODES

M1543007100581

CAUTION

During diagnosis, a diagnosis code associated
with other system may be set when the ignition
switch is turned on with connector(s)
disconnected. On completion, confirm all
systems for diagnosis code(s). If diagnosis
code(s) are set, erase them all.

When Engine-ECU <M/T> or
Engine-A/T-ECU <A/T> is
overwritten

*

−

Should not be
replaced

Should not be replaced
Should be registered
again

When immobilizer-ECU is
replace

Should not be
replaced

−

Should not be replaced
All ignition keys should be
registered again

When ignition key is added

Should not be
replaced

Should not be
replaced

• Additional ignition key

should be registered

• All ignition keys should

be registered again

When ignition key is lost

Should not be
replaced

Should not be
replaced

All the ignition keys other
than the lost one should
be registered again

Component to be replaced

Engine-ECU <M/T>
or Engine-A/T-ECU
<A/T>

Immobilizer-ECU

Ignition key

Code No.

Diagnosis contents

Reference page

11

Transponder communication system or radio interference
of encrypted code.

P.54A-11

12

Encrypted codes are not the same or are not registered.

P.54A-11