INSPECTION PROCEDURE 5: The windshield intermittent wiper interval cannot be adjusted by operating the windshield intermittent wiper interval control switch: 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

STEP 1. Use the M.U.T.-III to check if an ETACS-related diagnostic trouble code is set.
Connect the scan tool. Refer to "HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) ."

Q: Is the diagnostic trouble code set?
- YES: Diagnose the ETACS-ECU. Refer to "DIAGNOSTIC TROUBLE CODE TABLE ."
- NO: Go to Step 2.
  
  Fig 1: Connecting Scan Tool To Data Link Connector
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 2. Check the ETACS configuration function.
Use the ETACS configuration function to check that "Front wiper operation" is set to "Variable INT" or "Speed sensitive".

Q: Is the check result normal?
- YES: Go to Step 3.
- NO: Use the ETACS configuration function to set "Front wiper operation" to "variable INT" or "Speed sensitive". (Refer to CUSTOMIZATION FUNCTION .)

STEP 3. Using M.U.T.-III, check data list.

Check the input signal related to the windshield wiper operation.

Ignition switch: ACC

Rotate the windshield wiper interval control from (+) to (-) side.

Item No.	Display on M.U.T.-III	Check conditions	Normal condition
Item 359	Front wiper (interval volume)	Rotate the windshield wiper interval control from (+) to (-) side.	Value changes from (+) to 254 (-)

OK: Normal condition is displayed.

Q: Is the check result normal?

NO: Go to Step 4.
YES: Replace the column switch.

STEP 4. Retest the system.
Check that the windshield wiper interval changes when the windshield wiper interval control is rotated.

Q: Is the check result normal?
- YES: Intermittent malfunction. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .
- NO: Replace the ETACS-ECU.