Mitsubishi Outlander GS45X. Manual - part 5

IGNITION SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-17

SYMPTOM PROCEDURES

Inspection Procedure 1: Ignition key cylinder illumination light does not illuminate/extinguish
normally. <vehicles with WCM>

CAUTION

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

OPERATION

The ETACS-ECU operates this function in accor-
dance with the input signals below.

• Ignition switch (IG1)

• Key reminder switch

• Driver's door switch

• Driver's door lock actuator

AC702921

Ignition Key Cylinder Illumination Light Circuit

KEY
REMINDER
SWITCH

WHEN
REMOVING
KEY: ON

IGNITION KEY
CYLINDER
ILLUMINATION
LIGHT

ETACS-ECU

AC702922AB

Connector: C-211

ACA02655AT

Connector: C-315

IGNITION SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-18

TECHNICAL DESCRIPTION (COMMENT)

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

TROUBLESHOOTING HINTS

• The key reminder switch may be defective

• The driver's door switch may be defective

• The driver's door lock actuator may be defective

• The ignition key cylinder illumination light bulb

may be defective

• The ETACS-ECU may be defective

• The wiring harness or connectors may have

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

DIAGNOSIS

Required Special Tools:

• MB992006: Extra fine probe

• MB991223: Harness set

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with

CAN communication system)

STEP 1. Using scan tool MB991958, read the diagnostic
trouble code.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect

scan too (M.U.T.-III)

P.54A-14

(2) Turn the ignition switch to the "ON" position.
(3) Check whether the ETACS-ECU related DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Diagnose the ETACS-ECU. Refer to

P.54A-825

NO : Go to Step 2.

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

IGNITION SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-19

STEP 2. Using scan tool MB991958, check data list.
Use the ETACS-ECU data list to check the signals related to
the ignition key cylinder illumination light function.

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

• Remove the ignition key from the ignition key cylinder.

• Open the driver's door.

Q: Does scan tool MB991958 display the items "Dr door

unlock", "Dr door ajar switch", and "Handle lock
switch" as normal condition?
YES <Normal conditions are displayed for all the
items.> : Go to Step 3.
NO <Normal condition is not displayed for item No.
228.> : Troubleshoot the ETACS-ECU. Refer to GROUP

54A, Diagnosis - Inspection Procedure 4
"ETACS-ECU does not receive any signal from the
front door lock actuator"

P.54A-794

NO <Normal condition is not displayed for item No.
254.> : Troubleshoot the ETACS-ECU. Refer to GROUP

54A, Diagnosis - Inspection Procedure 2
"ETACS-ECU does not receive any signal from the
ignition switch (IG1)"

P.54A-788

NO <Normal condition is not displayed for item No.
256.> : Troubleshoot the ETACS-ECU. Refer to GROUP

54A, Diagnosis - Inspection Procedure 6
"ETACS-ECU does not receive any signal from the
front the front door switch (RH)"

P.54A-803

NO <Normal condition is not displayed for item No.
264.> : Troubleshoot the ETACS-ECU. Refer to GROUP

54A, Diagnosis - Inspection Procedure 3
"ETACS-ECU does not receive any signal from key
reminder switch"

P.54A-791

NO <Normal condition is not displayed for item No. 270,
271.> : Troubleshoot the ETACS-ECU. Refer to GROUP

54A, Diagnosis - Inspection Procedure 4
"ETACS-ECU does not receive any signal from front
door lock actuator"

P.54A-794

Item No.

Item name

Normal
conditions

Item 228

Dr door unlock

Item 254

IG voltage

1 V or less

Item 256

Dr door ajar switch

Open

Item 264

Handle lock switch

Key in

→ Key

out

Item 270

Dr door lock switch

Not lock

Item 271

Dr door unlock
switch

Unlock

IGNITION SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-20

STEP 3. Check key reminder switch connector C-211,
ETACS-ECU connector C-315 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Is key reminder switch connector C-211, ETACS-ECU

connector C-315 in good condition?
YES : Go to Step 4.
NO : Repair the damaged parts.

STEP 4.Check the Wiring harness between key reminder
switch connector C-211 (terminal No. 5) and ETACS-ECU
connector C-315 (terminal No. 18).

• Check the input/output line for open circuit.

Q: Is the check result normal?

YES : Go to Step 5.
NO : Repair the wiring harness between key reminder

switch connector C-211 and ETACS-ECU connector
C-315.

STEP 5. Check of ignition key cylinder illumination light
bulb.
Q: Is the ignition key cylinder illumination light bulb in

good condition?
YES : Go to Step 6.
NO : Replace the bulb of the ignition key cylinder

illumination light.

STEP 6. Check the wiring harness between key reminder
switch connector C-211 (terminal No. 7) and body ground.

• Check the ground line for open circuit.

Q: Is the check result normal?

YES : Go to Step 7.
NO : Repair the wiring harness between key reminder

switch connector C-211 and body ground.

STEP 7. Retest the system.
Q: Does the ignition key cylinder illumination light

illuminate/extinguish in good condition?
YES : The trouble can be an intermittent malfunction (Refer

to GROUP 00, How to use
Troubleshooting/inspection Service Points

− How to

Cope with Intermittent Malfunction

P.00-15

NO : Replace the ETACS-ECU.

Content .. 3 4 5 6 ..