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Home >> Ford Truck >> 2012 >> Explorer FWD L4-2.0L Turbo >> Repair and Diagnosis >> Wiper and Washer Systems >> Testing and Inspection >> Pinpoint Tests >> Diagnostic Routine G

Diagnostic Routine G




Diagnostic Routine G

Diagnostic Overview

The Rain Sensitive Wipers Do Not Operate

Refer to Wiring Diagram Set 81 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

REFER to Rain Sensitive Wipers .

REFER to Rain Sensor .

When an inoperative condition exists in the rain sensitive wiper system (or if the rain sensitive wiper feature is not enabled through the message center), the rain sensitive wiper system defaults to the normal intermittent (dwell time) settings.

DTC (Diagnostic Trouble Code) Fault Trigger Conditions






Pinpoint Test

1. CHECK THE LOW SPEED WIPER OPERATION

1. Ignition ON.

2. Place the wiper/washer switch to the low speed setting and observe the windshield wipers. Place the wiper/washer switch to the off setting.

Do the low speed wipers operate when the low speed setting is selected?








2. CHECK FOR DTC B1131:02 OR DTC B1131:08

1. Using a scan tool, perform the SCCM (Steering Column Control Module) self-test.

Is DTC B1131:02 or DTC B1131:08 present?








3. CHECK FOR DTC B10AD:02 OR DTC B10AD:08

1. Review the results from the SCCM (Steering Column Control Module) self-test.

Is DTC B10AD:02 or DTC B10AD:08 present?








4. VERIFY THE RAIN SENSITIVE WIPER FEATURE IS ENABLED IN THE VEHICLE MESSAGE CENTER

1. Access the vehicle settings in the message center using the steering wheel controls. Make sure the rain sensing feature is enabled.

Is the rain sensing feature enabled?








5. CHECK THE INPUT FROM THE MULTIFUNCTION SWITCH

1. Using a scan tool, monitor the SCCM (Steering Column Control Module) wiper/washer switch PIDs:

- F_WIP_INT_D1


- F_WIP_INT_D2


- F_WIP_INT_D3


- F_WIP_INT_D4


- F_WIP_INT_D5


2. Cycle the multifunction switch from off through each of the auto/intermittent sensitivity settings.

Do the PIDs correspond correctly with each setting selection?








6. CHECK THE WINDSHIELD FOR DAMAGE

1. Ignition OFF.

2. Inspect the windshield glass for any cracks, pits or other visible damage around the area of the rain sensor.

Is any windshield damage present near the area of the rain sensor?








7. CHECK THE WINDSHIELD GLASS FOR STREAKING

1. Ignition ON.

2. Turn the multifunction switch to the low speed wiper setting and while applying water to the windshield surface. Observe the wipe quality, especially around the area or the rain sensor.

Is any streaking present on the windshield around the area of the rain sensor?








8. CHECK THE WINDSHIELD WIPER BLADES FOR STREAKING

1. Ignition OFF.

2. Clean the windshield glass with glass cleaner.

3. Clean the wiper blades with isopropyl alcohol swabs. Wipe the entire length of the wiper blades.

4. Ignition ON.

5. Place the multifunction switch to the low speed wiper setting and while applying water to the windshield surface. Observe the wipe quality, especially around the area or the rain sensor.

Was there noticeable improvement in the wipe quality after cleaning the glass and the wiper blades?








9. RECHECK THE RAIN SENSITIVE WIPERS OPERATION

1. Place the multifunction switch to the auto/ intermittent 5 setting (most sensitive to moisture) while applying water on the windshield above the rain sensor.

Do the wipers operate when water is applied to the windshield surface?








10. CHECK FOR THE PRESENCE OF THE LENS GEL

1. Ignition OFF.

2. Lightly press the rain sensor against the windshield and release the rain sensor clips.

Does the rain sensor remain adhered to the windshield?








11. INSPECT THE RAIN SENSOR MOUNTING AREA

1. From the outside of the vehicle, inspect the area of the windshield glass where the rain sensor is mounted. The rain sensor contact area should appear black, with no bubbles, air pockets or contaminants between the windshield glass and the rain sensor.

Does the rain sensor contact area appear black, with no bubbles, air pockets or contaminants between the windshield glass and the rain sensor?








12. CHECK THE RAIN SENSOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

1. Ignition OFF.

2. Disconnect: Rain Sensor.

3. Ignition ON.

4. Measure:





Is the voltage greater than 11 volts?








13. CHECK THE RAIN SENSOR GROUND CIRCUIT FOR AN OPEN

1. Ignition OFF.

2. Measure:





Is the resistance less than 3 ohms?








14. CHECK THE LIN (Local Interconnect Network) CIRCUIT FOR AN OPEN

1. Disconnect: SCCM (Steering Column Control Module) C2414A.

2. Measure:





Is the resistance less than 3 ohms?








15. CHECK THE RAIN SENSOR FOR CORRECT OPERATION

1. Connect: Windshield Wiper Motor.

2. Inspect the rain sensor connector.

3. Repair:

- corrosion (replace connector or terminals - clean module pins)
- damaged or bent pins - replace terminals/pins
- pushed-out pins - replace pins as necessary

4. Reconnect the rain sensor connector. Make sure it seats and latches correctly.

5. Ignition ON.

6. Turn the wiper/washer switch to the auto/intermittent 5 position (most sensitive to moisture) while applying water to the windshield surface. Observe the wiper operation.

Do the wipers operate when water is applied to the windshield surface?







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