Inspection Procedure 10: The windshield washer does not work: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Check the operation of the windshield wipers.
Check that the windshield wipers work normally.

Q: Is the check result normal?
- YES: Go to Step 2.
- NO: Refer to INSPECTION PROCEDURE 1 "WINDSHIELD WIPERS DO NOT WORK AT ALL ."
STEP 2. Using scan tool (M.U.T.-III), read the diagnostic trouble code.
CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the OFF position before connecting or disconnecting scan tool (M.U.T.-III).
1. Connect scan tool (M.U.T.-III). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) ."
2. Turn the ignition switch to ON.
3. Check if an ETACS-related diagnosis trouble code is stored.
4. Turn the ignition switch to OFF.
Q: Is the DTC stored?
- YES: Diagnose the ETACS. (Refer to DIAGNOSIS TROUBLE CODE CHART .)
- NO: Go to Step 3.

STEP 3. Using scan tool (M.U.T.-III), check data list.

CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the OFF position before connecting or disconnecting scan tool (M.U.T.-III).

Connect scan tool (M.U.T.-III). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) ."
Turn the ignition switch to OFF.

Check the input signal related to the windshield washer operation.

Ignition switch: ACC

Windshield washer switch: ON

Item No.	Item name	Normal condition
Item 237	Front washer	ON

OK: Normal condition is displayed.

Q: Is the check result normal?

YES: Go to Step 4.
NO: Refer to INSPECTION PROCEDURE 11 "THE COLUMN SWITCH SIGNAL IS NOT RECEIVED ."

STEP 4. Check the washer motor.
1. Remove the washer tank assembly with the washer hose attached. Then fill the washer tank with water.
2. Check to see that the washer fluid is vigorously sprayed when connecting the positive battery terminal to terminal number 2 and terminal number 1 to ground.
Q: Is the check result normal?
- YES: Go to Step 5.
- NO: Replace the washer motor.
  
  Fig 1: Checking Washer Motor
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 5. Measure the voltage at ETACS-ECU connector (W. WA terminal).
1. Disconnect the connector, and measure the voltage at the wiring harness-side.
2. Ignition switch: ACC
3. Windshield washer switch: ON
4. Measure the voltage between ETACS-ECU connector (W. WA terminal) and body ground.
  OK: System voltage
Q: Is the check result normal?
- YES: Go to Step 8.
- NO: Go to Step 6.
STEP 6. Check of open, short to power supply, short to ground circuit in WASH line between washer motor connector and ETACS-ECU connector.
Q: Is the check result normal?
- YES: Go to Step 7.
- NO: Repair the connector(s) or wiring harness.
STEP 7. Check of open, short to power supply, short to ground circuit in W. WA line between washer motor connector and ETACS-ECU connector.
Q: Is the check result normal?
- YES: Go to Step 8.
- NO: Repair the connector(s) or wiring harness.
STEP 8. Retest the system.
Check that the windshield washers work normally.

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