Mitsubishi Evolution X. Manual - part 499

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42A-99

STEP 1. Check the power supply system.
With the ignition switch in the LOCK (OFF) position, check if
the following function operates normally:

• Hazard warning lamp

Q: Is the check result normal?

YES : Go to Step 2.
NO : Refer to GROUP 54A

− Malfunction of ETACS-ECU

power supply circuit

P.54A-636

STEP 2. Using scan tool MB991958, check data list.
Check the signals related to the power window timer function
operation.

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 tool (M.U.T.-III)

P.42B-10

(2) Turn the ignition switch to the "ON" position.
(3) Check the data list of the ETACS.

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

• Close the driver's door.

• Close the passenger's door.

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

OK: Normal condition is displayed.

Q: Is the check result normal?

YES <Normal conditions are displayed for all the
items.> : Go to Step 3.
NO <Normal condition is not displayed for item No.
254.> : Refer to GROUP 54A

− inspection procedure 2: "The

ignition switch (IG1) signal is not received

P.54A-642

NO <Normal condition is not displayed for item No.
256.> : Refer to GROUP 54A

− inspection procedure 5: "The

front door switch (driver’s side) signal is not received

P.54A-656

NO <Normal condition is not displayed for item No.
257.> : Refer to GROUP 54A

− inspection procedure 6: the

front door switch (passenger’s side) signal is not
received.

P.54A-654

Item No.

Item name

Normal
condition

254

IG voltage

Battery
voltage

256

Dr door ajar switch

257

As door ajar switch

AC608435

Data link connector

MB991827

MB991824

MB991910

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42A-100

STEP 3. Retest the system.
Check that the power window timer function works normally.
Q: Is the check result normal?

YES : No action is necessary and testing is complete.
NO : Replace the power window main switch. Check that

the power window timer function works normally.

INSPECTION PROCEDURE 6: Power Window Anti-trap Function does not work Normally. <Driver’s
side seat>

COMMENTS ON TROUBLE SYMPTOM

Malfunction of the power window motor revolution
detection sensor is suspected.

PROBABLE CAUSES

• Malfunction of the power window motor

• Damaged wiring harness and connectors

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB992006: Extra fine probe

• MB991223: Harness set

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

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

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

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42A-101

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

CAUTION

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

P.42B-10

(2) Turn the ignition switch to the "ON" position.
(3) Check whether the power window main switch related DTC

is set.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Diagnose the power window main switch. Refer to

Diagnostic trouble code chart

P.42A-58

NO : Go to Step 2.

STEP 2. Check the power window operating current.
Check that the power window operating current is normal
(Refer to

P.42A-116

Q: Is the check result normal?

YES : Door window glass adjustment (Refer to

P.42A-114

Then go to Step 3.

NO : Replace the power window motor. Verify that the

power window anti-trap function works normally.

STEP 3. Confirm the power window learning function.
Check that the power window switch has learned the fully
closed position of the windows.
Q: Is the check result normal?

YES : Go to Step 4.
NO : Make the power window switch learn the fully closed

position of the windows (Refer to

P.42A-117

). Verify

that the power window anti-trap function works
normally.

AC608435

Data link connector

MB991827

MB991824

MB991910

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42A-102

STEP 4. Retest the system.
Check that the power window anti-trap function works.
Q: Is the check result normal?

YES : No action is necessary and testing is complete.
NO : Replace the front power window motor (LH). Verify

that the power window anti-trap function works
normally.

INSPECTION PROCEDURE 7: The Window Glass Lowers Automatically while it is Rising.

COMMENTS ON TROUBLE SYMPTOM

If the sliding resistance is too great when the window
is being raised or the window glass encounters an
object, the window glass will lower by approximately
150 mm (5.9 inches).

PROBABLE CAUSES

• Improper adjusted door window glass

• Incorrectly installed or warped glass slider

• Malfunction of the power window motor

• Malfunction of the window regulator

DIAGNOSTIC PROCEDURE

STEP 1. Determine a trouble spot.
Q: Which type of the power window is installed on vehicle?

Driver’s side seat : Go to Step 2.
Except driver’s side seat : Go to Step 3..

STEP 2. Check the power window anti-trap function.
Check that the power window anti-trap function works. Refer to

P.42A-116

Q: Is the check result normal?

YES : Go to Step 3.
NO : Refer to inspection procedure 6 "Power window

anti-trap function does not work normally

P.42A-100

STEP 3. Check that the door window glasses are installed
correctly.
Check that the door window glasses are installed correctly.
Refer to

P.42A-114

Q: Is the check result normal?

YES : Go to Step 4.
NO : Adjust the door window glass (Refer to

P.42A-114

STEP 4. Retest the system.
Check that the power window does not lower while it is being
raised.
Q: Is the check result normal?

YES : No action is necessary and testing is complete.
NO : Replace the power window motor of the defective

window.

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