Mitsubishi Evolution X. Manual — part 843

WINDSHIELD WIPER AND WASHER

TSB Revision

EXTERIOR

51-55

STEP 3. Use the scan tool MB991958 to check if an
ETACS-related diagnostic trouble code is set.
Connect the scan tool. Refer to GROUP 54A ETACS, "How to
connect the scan tool (M.U.T.-III)

P.54A-579

."

Q: Is the diagnostic trouble code set?

YES : Diagnose the ETACS-ECU. Refer to GROUP 54A

ETACS, "Diagnostic trouble code chart

P.54A-582

."

NO : Go to Step 4.

STEP 4. Using scan tool MB991958, read the lighting
control sensor diagnostic trouble code.
Check if a lighting control sensor diagnostic trouble code is set.
Connect the scan tool. Refer to GROUP 54A ETACS, "How to
connect the scan tool (M.U.T.-III)

P.54A-579

."

Q: Is the diagnostic trouble code set?

YES : Diagnose the lighting control sensor. [Diagnosis

Code: (Refer to GROUP 54A

− Diagnosis Code Chart

P.54A-107

) or service data (

P.51-64

).]

NO : Go to Step 5.

STEP 5. Connector check: C-316 ETACS-ECU connector
Q: Is the check result normal?

YES : Go to Step 6.
NO : Repair the damaged connector.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

WINDSHIELD WIPER AND WASHER

TSB Revision

EXTERIOR

51-56

STEP 6. Measure the voltage at the C-316 ETACS-ECU
connector.
(1) Disconnect the connector, and measure the voltage at the

wiring harness side.

(2) Measure the voltage between C-316 ETACS-ECU

connector terminal No. 1 and body ground.

OK: Battery voltage

Q: Is the check result normal?

YES : Replace the Lighting control sensor.
NO : Go to Step 7.

STEP 7. Check the wiring harness between C-316
ETACS-ECU connector terminal No.1 and D-02 lighting
control sensor connector terminal No.3.

• Check the input and output lines for open or short circuit.

Q: Is the check result normal?

YES : Intermittent malfunction (Refer to GROUP 00

− How

to Use Troubleshooting/Inspection Service Points -
How to Cope with Intermittent Malfunction

P.00-15

.)

NO : Repair the wiring harness.

INSPECTION PROCEDURE 9: Sometimes the rain sensitive AUTO wiper function works even though
there is no rainfall < Vehicles with lighting control sensor>.

CAUTION

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

.

TECHNICAL DESCRIPTION (COMMENT)

The lighting control sensor may be defective or a failure in the
lighting control sensor (rain sensor) adaptation is suspected.

.

TROUBLESHOOTING HINTS

• Malfunction of the lighting control sensor

• Lighting control sensor (rain sensor) adaptation failure

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

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

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

AC608254

6

2

3

1

5 4

Harness side: C-316

CU

WINDSHIELD WIPER AND WASHER

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EXTERIOR

51-57

STEP 1. Lighting control sensor (rain sensor) installation
surface check
Visually check the presence of scratches or air bubbles (diame-
ter of 5 mm or more) on the windshield to which the lighting
control sensor is installed.
Q: Is the check result normal?

YES : Go to Step 2.
NO : Replace the windshield (Refer to GROUP 42A

−

Windshield Removal and Installation

P.42A-19

).

STEP 2. Windshield wiper operation check
Check that the windshield wipers work normally.
Q: Is the check result normal?

YES : Go to Step 3.
NO : Refer to Inspection procedure 3

P.51-35

.

STEP 3. Use the scan tool MB991958 to check if an
ETACS-related diagnostic trouble code is set.
Connect the scan tool. Refer to GROUP 54A ETACS, "How to
connect the scan tool (M.U.T.-III)

P.54A-579

."

Q: Is the diagnostic trouble code set?

YES : Diagnose the ETACS-ECU. Refer to GROUP 54A

ETACS, "Diagnostic trouble code chart

P.54A-582

."

NO : Go to Step 4.

STEP 4. Using scan tool MB991958, read the lighting
control sensor diagnostic trouble code.
Check if a lighting control sensor diagnostic trouble code is set.
Connect the scan tool. Refer to GROUP 54A ETACS, "How to
connect the scan tool (M.U.T.-III)

P.54A-579

."

Q: Is the diagnostic trouble code set?

YES : Diagnose the lighting control sensor. [Diagnosis

Code: (Refer to GROUP 54A

− Diagnosis Code Chart

P.54A-107

) or service data (

P.51-64

).]

NO : Go to Step 5.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

WINDSHIELD WIPER AND WASHER

TSB Revision

EXTERIOR

51-58

STEP 5. Lighting control sensor (rain sensor) installation
surface check
Check that the lighting control sensor (rain sensor) is installed
to the windshield glass firmly.
Q: Is the check result normal?

YES : Go to Step 6 after completion of the lighting control

sensor (rain sensor) adaptation (

P.51-76

).

NO : Install the lighting control sensor (rain sensor) to the

windshield glass correctly (Refer to GROUP 54A

−

Lighting control sensor removal and Installation

P.54A-187

).

STEP 6. Retest the system.
Check the lighting control sensor (rain sensor) after completion
of the lighting control sensor (rain sensor) adaptation
(1) Check that the windshield glass surface is dry.
(2) Pour the windshield glass surface where the lighting control

sensor is installed.

Q: Does the windshield wiper operate?

Operate one or more : Intermittent malfunction (Refer to

GROUP 00

− How to Use Troubleshooting/Inspection

Service Points - How to Cope with Intermittent
Malfunction

P.00-15

).

Does not operate : Troubleshoot the rain sensitive wiper

function (Refer to Inspection procedure 7

P.51-48

).