Mitsubishi Lancer Evolution IX. Manual — part 268

MB991223

A

D

C

B

AZ

DO NOT USE

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-9

TROUBLESHOOTING

IGNITION KEY REMINDER BUZZER AND
DOOR LOCK PREVENTION FUNCTION
TROUBLESHOOTING

M1543000701187

The ignition key reminder buzzers are controlled by
the Smart Wiring System (SWS). For troubleshoot-
ing, refer to respective Groups below.

• Not using SWS monitor: GROUP 54B, Trouble-

shooting

P.54B-33

.

• Using SWS monitor: GROUP 54C, Troubleshoot-

ing

P.54C-20

.

IMMOBILIZER SYSTEM
TROUBLESHOOTING

DIAGNOSIS CODE CHART

M1543007100514

CAUTION

During diagnosis, a diagnosis code associated
with other system may be set when the ignition
switch is turned on with connector(s) discon-
nected. On completion, confirm all systems for
diagnosis code code(s). If diagnosis code
code(s) are set, erase them all.
Use the following chart to develop proper diagnostic
strategy.

Diagnosis code No.

Diagnosis item

Reference page

11

Transponder communication system or radio interference
of encrypted code

P.54A-10

.

12

Encrypted codes are not the same or are not registered

P.54A-11

.

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

MB992006

MB992006

Extra fine probe

Continuity check and voltage
measurement at harness wire
or connector

Tool

Number

Name

Use

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-10

DIAGNOSTIC TROUBLE CODE
PROCEDURES

Code No.11: Transponder Communication System or Radio Interference of Encrypted Code

AC504325

Ignition Key Ring and Immobilizer-ECU Circuit

HIGH-FREQUENCY
CIRCUIT

IGNITION KEY

TRANSPONDER

IGNITION KEY
RING ANTENNA

ENCRYPTED
CODE

AB

IMMOBILIZER-ECU

DIAGNOSIS CODE SET CONDITION

• Diagnosis code No.11 may be set if other ignition

keys are in the vicinity of the vehicle as it is being
started.

• The transponder’s encrypted code is not sent to

the immobilizer-ECU immediately after the igni-
tion switch is turned to "ON" position.

NOTE: Diagnosis code No.11 is always set together
with MPI system diagnosis code No.P0513.

TROUBLESHOOTING HINTS

• Radio interference of the encrypted code.

• Malfunction of the transponder.

• Malfunction of the immobilizer-ECU.

DIAGNOSIS PROCEDURE

STEP 1. Check for presence of other key near the
key in the ignition.

Q: Is there any other key near the key in the ignition?

YES :

Move the other key well away from key

being used. Retest the system.

NO :

Go to Step 2.

STEP 2. Check that the engine start using the
spare ignition key which encrypted code has
been registered.

Q: Does the engine start using the spare ignition key

for which the encrypted code has been registered?
YES :

Replace the ignition key that does not work.

Then register the password (secret code)
and encrypted code

P.54A-22

. Retest the

system.

NO :

Go to Step 3.

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-11

STEP 3. Check whether the diagnosis code is
reset.

Q: Which diagnosis code is set, code No.11 or 12 the

encrypted code has been registered?
Code No.12 is set :

Refer to

P.54A-11

.

Code No.11 is set :

Go to Step 4.

STEP 4. Connector check: Immobilizer-ECU
connector C-207-1.

AC310479

Connector: C-207-1 <L.H. drive vehicles>

Harness side

AH

AC310481

Connector: C-207-1 <R.H. drive vehicles>

Harness side

AH

Code No.12: Encrypted Codes are not the same or are not Registered

DIAGNOSIS CODE SET CONDITION

The encrypted code sent by the transponder is not
the same encrypted code which is registered in the
immobilizer-ECU.
NOTE: Diagnosis code No.12 is always output
together with MPI system diagnosis code No.P0513.

TROUBLESHOOTING HINTS

• The encrypted code in the ignition key has not

been properly registered.

• Malfunction of immobilizer-ECU.

DIAGNOSIS PROCEDURE

Was the encrypted code registered?

YES :

Replace the immobilizer-ECU and then

re-register the encrypted code (Refer to

P.54A-22

).

NO :

Register the encrypted code (Refer to

P.54A-22

).

SYMPTOM CHART

M1543007201279

Symptom

Inspection
procedure No.

Reference page

Communication with M.U.T.-II/III is impossible.

1

P.54A-12

The ignition key cannot be registered.

2

P.54A-20

Engine does not start (cranking but no initial combustion).

3

P.54A-20

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-12

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Communication with M.U.T.-II/III is Impossible.

AC504327

Immobilizer-ECU Power Source, Earth and Engine-ECU Communication Line Circuit

ENGINE
CONTROL
RELAY

ENGINE-ECU

L.H. drive
vehicles

R.H. drive
vehicles

IMMOBILIZER-
ECU

POWER
SOURCE

L.H. drive
vehicles

R.H. drive
vehicles

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

AB