Mitsubishi L200. Manual — part 662

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-15

Tool

Number

Name

Use

MB990784

Ornament
remover

Lower panel and Steering column
cover removal

MB991955

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

M.U.T.-III sub-
assembly

A: Vehicle

Communicati
on Interface
(V.C.I.)

B: M.U.T.-III

USB cable

C: M.U.T.-III

main harness
A (Vehicles
with CAN
communicatio
n system)

D: M.U.T.-III

main harness
B (Vehicles
without CAN
communicatio
n system)

E: M.U.T.-III

measure
adapter

F: M.U.T.-III

trigger
harness

CAUTION

For vehicles with CAN
communication, use M.U.T.-III
main harness A to send
simulated vehicle speed. If you
connect M.U.T.-III main harness B
instead, the CAN communication
does not function correctly.
Checking ETACS-ECU (service
data and diagnosis codes)

MB990784

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

A

B

C

D

E

F

DO NOT USE

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-16

TROUBLESHOOTING

DIAGNOSIS TROUBLESHOOTING FLOW

M1541201400021

Refer to GROUP 00

− Contents of Troubleshooting .

CHECK CHART FOR TROUBLE
SYMPTOMS

M1541201100279

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 diag-
nosis code(s). If diagnosis code(s) are set, erase them all.

• When the battery cable is disconnected or the combination meter is removed, the fuel gauge

learned value will be erased. To let the display unit re-learn it, enter the vehicle speed (by driving
the vehicle or entering simulated vehicle speed) and then stop the 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

Tool

Number

Name

Use

MB991223

A

D

C

B

AZ

DO NOT USE

Trouble symptom

Inspection
procedure
number

Reference page

The ignition key cylinder illumination lamp does not illuminate
normally. <Except single cab>

1

P.54A-17

Malfunction of the ignition switch power supply system

2

P.54A-22

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-17

SYMPTOM PROCEDURES

Inspection Procedure 1: The ignition key cylinder illumination lamp does not illuminate normally.
<Except single cab>

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM
The ETACS-ECU operates this function in accord-
ance with the input signals below.

• Ignition switch (IG1)

• Key reminder switch

• Door switch (front: RH)

If this function does not work normally, these input
signal circuit(s), the ignition key cylinder illumination
lamp or the ETACS-ECU may be defective.

PROBABLE CAUSES

• Malfunction of the key reminder switch

• Malfunction of the door switch (front: RH)

• Malfunction of the ignition key cylinder illumina-

tion lamp bulb

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the operation of the front room
lamp and rear room lamp.
Check that the front room lamp and rear room lamp
illuminate and extinguish normally.

Q: Is the check result normal?

Ignition Key Cylinder Illumination Lamp Circuit

FUSIBLE
LINK

20

ETACS-ECU

KEY CYLINDER
ILLUMINATION LAMP

KEY REMINDER
SWITCH

Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple SI : Silver

WHEN
REMOVING
KEY:ON

IGNITION SWITCH

CHASSIS ELECTRICAL

54A-18

YES <Vehicles without key reminder switch> :

Go

to Step 2.

YES <Vehicles with key reminder switch> :

Go to

Step 3.

NO :

Refer to inspection procedure 1 "The interior
lamps (front room ramp, rear room lamp and
ignition key cylinder illumination lamp) does
not illuminate or extinguish normally

P.54A-

181

."

STEP 2. M.U.T.-III data list
Check the input signals below, which are related to
the ignition key cylinder illumination lamp.

• When the closed driver's door is opened.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Refer to inspection procedure C-5 "One of
the door switch signals is not received

P.54A-540

."

STEP 3. M.U.T.-III data list
Check the input signals below, which are related to
the ignition key cylinder illumination lamp.

• Turn the ignition switch to the "LOCK" (OFF)

position. (key inserted)

OK: Normal condition is displayed.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Replace the ETACS-ECU.

STEP 4. Check the key reminder switch.
Check that the key reminder switch works normally.
Refer to

P.54A-26

.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Replace the steering lock cylinder
assembly.

STEP 5. Connector check: C-301 key reminder
switch connector

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the defective connector.

STEP 6. Check the bulb of the ignition key
cylinder illumination lamp.
Check the bulb of the ignition key cylinder illumina-
tion lamp.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Replace the steering lock cylinder
assembly.

Item
No.

Item name

Normal
condition

19

Drive’s door switch

ON

Item
No.

Item name

Normal
condition

28

Steering lock switch

OFF

AC903858AB

Harness side

Connector: C-301 <LHD>

AC903869AB

Harness side

Connector: C-301 <RHD>