Mitsubishi Outlander (2003+). Manual - part 404

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-11

STEP 4. Connector check: Immobilizer-ECU 
connector C-304-1.

Q: Are immobilizer-ECU connector C-304-1 in good 

condition?

YES : 

Replace immobilizer-ECU and Then 

register the password (secret cod) and 
encrypted code. Retest the system.

NO : 

Repair or replace the damage 
component(s).

Code No.12: Encrypted Codes are Not identical or 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.P1610.

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-24

).

NO : 

Register the encrypted code (Refer to 

P.54A-24

).

SYMPTOM CHART

M1543007201150

AC211664AC

C-304-1

Connector: C-304-1 <LHD>

Harness side

1

2

3

4

AC309267AB

C-304-1

Connector: C-304-1 <RHD>

Harness side

Symptom

Inspection 
procedure No.

Reference page

Communication with MUT-II/III is impossible

1

P.54A-12

The ignition key cannot be registered

2

P.54A-22

Engine cranks but does not start

3

P.54A-23

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-12

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Communication with MUT-II/III is Impossible.

ENGINE 
CONTROL RELAY

POWER 
SOURCE

SIGNAL
TRANSMISSION
CIRCUIT

IMMOBILIZER-
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   

ENGINE-ECU

Immobilizer-ECU Power Source, Earth and Engine-ECU 
Communication Line Circuit <2000>

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-13

TECHNICAL DESCRIPTION (COMMENT)

•

This malfunction may be caused by a defective 
immobilizer-ECU, engine-ECU <M/T> or 
engine-A/T-ECU <A/T>, or a defect in the 
communication line between the 
immobilizer-ECU and engine-ECU <M/T> or 
engine-A/T-ECU <A/T>. If this malfunction 
appears when the MPI system and MUT-II/III can 
communicate each other, MPI system diagnosis 
code No.P1610 <2000> or P0513 <2400> will 
reset.

•

If the MPI system is normal, the engine control 
relay can be determined as normal. In addition, if 
the MPI system and MUT-II/III can communicate 
each other, the circuits between the diagnosis 
connector and the engine-ECU <M/T> or 
engine-A/T-ECU <A/T> can determined as 
normal.

NOTE: If this malfunction appears, MPI system 

diagnosis code No.P1610 <2000> or P0513 
<2400> will be output.

TROUBLESHOOTING HINTS

•

Malfunction of the immobilizer-ECU

•

Malfunction of the engine-ECU <M/T> or 
engine-A/T-ECU <A/T>

•

The wiring harness or connectors may have 
loose, corroded, or damaged terminals, or 
terminals pushed back in the connector

NOTE

: LHD
: RHD

ENGINE 
CONTROL RELAY

POWER 
SOURCE

SIGNAL
TRANSMISSION
CIRCUIT

IMMOBILIZER-
ECU

ENGINE-ECU OR
ENGINE-A/T-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   

Immobilizer-ECU Power Source, Earth and Engine-ECU or 
Engine-A/T-ECU Communication Line Circuit <2400>

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-14

DIAGNOSIS PROCEDURE

STEP 1. Using the MUT-II/III, read the MPI system 
diagnosis code.

CAUTION

To prevent damage to the MUT-II/III, always turn 
the ignition switch to "LOCK" (OFF) position 
before connecting or disconnecting the MUT-II/III.
 Use the MUT-II/III to confirm the MPI system DTC.

(1) Connect the MUT-II/III to the diagnosis connector.
(2) Turn the ignition switch "ON" to position.
(3) Read the MPI system diagnosis code.

NOTE: If the MUT-II/III cannot communicate with 
the MPI system, refer to GROUP 13A, MPI 
Troubleshooting 

−

 Symptom Procedures 

P.13A-190

 or GROUP 13B, MPI Troubleshooting 

−

 Symptom Procedures 

P.13B-285

.

Q: Is an MPI system DTC P1610 <2000> or P0513 

<2400> output?

YES : 

Refer to GROUP 13A, MPI Troubleshooting 

−

 Inspection Chart 

P.13A-183

 or GROUP 

13B, MPI Troubleshooting 

−

 Inspection 

Chart 

P.13B-205

.

NO : 

Go to Step 2.

STEP 2. Voltage measurement at 
immobilizer-ECU connector C-304-1.

(1) Disconnect immobilizer-ECU connector C-304-1.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 1 and 

earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 3.

AC300830

Steering shaft

MUT-II

AC

<Using the MUT-II>

AC308915 AC

MB991911

16-PIN

MB991827

MB991824 

<Using the MUT-III>

AC211664AC

C-304-1

Connector: C-304-1 <LHD>

Harness side

1

2

3

4

AC309267AB

C-304-1

Connector: C-304-1 <RHD>

Harness side

AC212142

C-304-1 Harness connector:
Component side

AB