Inspection Procedure 1: The windshield wipers do not work at all: 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. 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-ECU. (Refer to DIAGNOSIS TROUBLE CODE CHART .)
- NO: Go to Step 2.

STEP 2. 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 wiper operation.

Turn the ignition switch to the ACC position.

Operate the windshield wiper switch at ground switch position.

Item No.	Item name	Windshield wiper switch position	Normal condition
Item 235	Front wiper ACT	LO	ON
		HI	ON
		INTO	ON and OFF
		MIST	ON
Item 288	ACC switch		ON

OK: Normal condition is displayed.

Q: Is the check result normal?

YES < Normal conditions are displayed for all items >: Go to Step 3.
NO < Normal condition is not displayed for item No. 235 >: INSPECTION PROCEDURE 11: THE COLUMN SWITCH SIGNAL IS NOT RECEIVED .
NO < Normal condition is not displayed for item No. 288 >: Inspection Procedure 1: The ignition switch (ACC) signal is not received .

STEP 3. Check the windshield wiper motor.
1. Disconnect windshield wiper motor connector.
2. Connect a battery to the windshield wiper motor as shown. Then check that the windshield wiper motor operates normally at high and low speeds.
Q: Is the check result normal?
- YES: Go to Step 4.
- NO: Replace the windshield wiper motor.
  
  Fig 1: Checking Windshield Wiper Motor
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 4. Measure the resistance at windshield wiper motor connector.
1. Disconnect the connector, and measure the resistance at the wiring harness.
2. Measure the resistance between the windshield wiper motor connector ground terminal and the body ground.
  OK: Continuity exists (2 Ω or less)
Q: Is the check result normal?
- YES: Go to Step 6.
- NO: Go to Step 5.
STEP 5. Check of open circuit in ground lines between windshield wiper motor connector and body ground.
Q: Is the check result normal?
- YES: Intermittent malfunction. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS .
- NO: Repair the connector(s) or wiring harness.
STEP 6. Measure the voltage at ETACS-ECU connector (+B1 terminal).
1. Disconnect the connector, and measure the voltage at the wiring harness side.
2. Measure the voltage between the ETACS-ECU(+B1 terminal) and the body ground.
  OK: System voltage
Q: Is the check result normal?
- YES: Go to Step 8.
- NO: Go to Step 7.
STEP 7. Check of short to power supply, short to ground, and open circuit in power supply line between fusible link and ETACS-ECU connector (+B terminal).
Q: Is the check result normal?
- YES: Intermittent malfunction. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS .
- NO: Repair the connector(s) or wiring harness.
STEP 8. Check of short to power supply, short to ground, and open circuit in W. LO, HI line between windshield wiper motor connector and ETACS-ECU connector
Q: Is the check result normal?
- YES: Go to Step 9.
- NO: Repair the connector(s) or wiring harness.
STEP 9. Check the trouble symptom.
Check that the windshield wipers work normally.

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