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Wiper System & Washer System: Overview Ford Edge I рестайлинг

Wiper/washer Systems 3 illustrations ~2940 words

Windshield Wiper Operation

The wiper/washer switch is mounted to the Steering Column Control Module (SCCM). The SCCM commands the windshield wiper motor to activate the appropriate wash, low, high and intermittent modes through a Local Interconnect Network (LIN).

When the wiper/washer switch is in the HIGH position, the windshield wiper motor also receives ground which is hardwired directly through the SCCM (bypassing the logic within the module). This fail-safe circuit makes sure that the windshield wipers function in HIGH speed mode in the event of a LIN communication failure.

Rear Window Wiper Operation

When the wiper/washer switch is in the INT 1 or INT 2 position, the SCCM sends the request to the windshield wiper motor through the LIN. When the request is received, the windshield wiper motor supplies a momentary ground to the rear window wiper motor. The position of the wiper/washer switch determines the frequency of this ground. When the ground is present, it activates an integral relay within the rear window wiper motor which activates the motor. The rear window wiper motor is self parking.

When the wiper/washer switch is placed in the WASH position, the SCCM sends the request to the windshield wiper motor through the LIN. The windshield wiper motor controls the direction of the washer pump to direct washer fluid to the windshield or rear window.

Normal Operation

The wiper relay (located in the Battery Junction Box (BJB)) is activated whenever the ignition is in the ON position. The wiper relay provides voltage to the windshield wiper motor. The wiper/washer switch is mounted to the Steering Column Control Module (SCCM). The SCCM commands the windshield wiper motor to activate the appropriate wash, low, high and intermittent modes through a Local Interconnect Network (LIN).

When the wiper/washer switch is in the HIGH position, the windshield wiper motor also receives ground which is hardwired directly through the SCCM (bypassing the logic within the SCCM and also the windshield wiper motor). This fail-safe circuit makes sure that the windshield wipers function in HIGH speed mode in the event of a LIN communication failure.

This pinpoint test is intended to diagnose the following

  1. Fuse
  2. Wiring, terminals or connectors
  3. Wiper relay
  4. Wiper/washer switch
  5. Windshield wiper motor
  6. SCCM

The wiper relay, located in the Battery Junction Box (BJB), is activated when the ignition is ON. The wiper relay provides voltage to the windshield wiper motor. The wiper/washer switch is mounted to the Steering Column Control Module (SCCM). The SCCM commands the windshield wiper motor to activate the appropriate wash, low, high and intermittent modes through a Local Interconnect Network (LIN).

When the wiper/washer switch is in the HIGH position, the windshield wiper motor also receives ground which is hardwired directly through the SCCM (bypassing the logic within the module). This fail-safe circuit makes sure that the windshield wipers function in HIGH speed mode in the event of a LIN communication failure.

  1. DTC B1131:02 (Wiper Motor Module: General Signal Failure) - This DTC sets when the SCCM determines a general signal failure has occurred on the LIN.
  2. DTC B1131:08 (Wiper Motor Module: Bus Signal / Message Failure) - This DTC sets when the SCCM determines a communication error has occurred on the LIN. If this DTC is present and the windshield wipers do not park when the switch is turned to the OFF position, the cause of the concern is most likely the microprocessor inside the wiper motor. If this DTC is present and the windshield wipers park when the switch is turned to the OFF position, the cause of the concern is most likely a wiring concern in the LIN.

This pinpoint test is intended to diagnose the following

  1. Wiring, terminals or connectors
  2. Wiper/washer switch
  3. Windshield wiper motor
  4. Rain sensor (if equipped)
  5. SCCM

The wiper relay (located in the Battery Junction Box (BJB)) is activated whenever the ignition is ON. The wiper relay provides voltage to the windshield wiper motor. The wiper/washer switch is mounted to the Steering Column Control Module (SCCM). The SCCM commands the windshield wiper motor to activate the appropriate wash, low, high and intermittent modes through a Local Interconnect Network (LIN).

When the wiper/washer switch is in the HIGH position, the windshield wiper motor also receives a ground signal which is hardwired directly through the SCCM (bypassing the logic within the module). This fail-safe circuit makes sure that the windshield wipers function in HIGH speed mode in the event of a LIN communication failure.

This pinpoint test is intended to diagnose the following

  1. Wiring, terminals or connectors
  2. Wiper relay
  3. Wiper/washer switch
  4. Windshield wiper motor
  5. SCCM

The wiper relay (located in the Battery Junction Box (BJB)) is activated whenever the ignition is ON. The wiper relay provides voltage to the windshield wiper motor. The wiper/washer switch is mounted to the Steering Column Control Module (SCCM). The SCCM commands the windshield wiper motor to activate the appropriate wash, low, high and intermittent modes through a Local Interconnect Network (LIN).

This pinpoint test is intended to diagnose the following

  1. Wiper/washer switch
  2. Windshield wiper motor
  3. SCCM

The rain sensitive wiper feature replaces the intermittent wiper feature. The rain sensitive feature is active when the wiper/washer switch is in any of the 5 auto/intermittent sensitivity settings. The setting closest to OFF is the least sensitive to moisture, the highest setting being the most sensitive to moisture.

The rain sensor sends data through the LIN to the windshield wiper motor. When the rain sensitive wiper feature is enabled, based on the data received from the rain sensor and the auto/intermittent setting on the wiper/washer switch, the system automatically activates and adjusts the wiper speed and frequency when moisture is detected on the windshield.

The rain sensor optically senses water on the windshield. An infrared beam lights a section of the windshield. The intensity of the reflected beam is measured and compared to the intensity of the transmitted beam. If there is water on the surface of the windshield, the beam distorts, reducing the intensity of the beam. If the beam is not reflected completely, it is interpreted as rain on the windshield and the windshield wipers are activated.

A gel-type lens is used as the interface between the rain sensor and the windshield. If the lens is missing or damaged, the rain sensing wipers can be inoperative. The rain sensor gel-type lens is part of the rain sensor and cannot be replaced separately on a rain sensor of this type.

The rain sensitive wiper feature can be enabled/disabled through the message center.

When the rain sensitive wipers are disabled from the message center, or the windshield wiper motor detects a fault with the rain sensor input, the windshield wiper motor changes to a default intermittent mode. The timing of the wipers correspond to a standard intermittent setting based on the auto/intermittent sensitivity setting on the wiper/washer switch.

  1. B10AD:02 (Rain Sensor: General Signal Failure) - This DTC sets when the SCCM determines a general signal failure has occurred on the LIN.
  2. B10AD:08 (Rain Sensor: Bus Signal / Message Failure) - This DTC sets when the SCCM determines a communication error has occurred on the LIN. If the rain sensitive wipers are inoperative only, this DTC may be caused by an open in the rain sensor power or ground circuit or an open in the LIN circuit.

This pinpoint test is intended to diagnose the following

  1. Fuse
  2. Wiring, terminals or connectors
  3. Rain sensitive feature not enabled
  4. Foreign material on windshield, such as dirt, dust or bugs
  5. Wiper blades
  6. Windshield glass
  7. Wiper/washer switch
  8. Windshield wiper motor
  9. Rain sensor
  10. SCCM

Scheme 1

Scheme 1: PINPOINT TEST E: THE RAIN SENSITIVE WIPER FEATURE IS INOPERATIVE
Scheme 1: PINPOINT TEST E: THE RAIN SENSITIVE WIPER FEATURE IS INOPERATIVE

Scheme 2

Scheme 2
Scheme 2

Scheme 3

Scheme 3
Scheme 3
  1. E1 CHECK THE LOW SPEED WIPER OPERATION NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector. Ignition ON. 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? Yes : GO to E2. No : GO to «PINPOINT TEST B»(ref-494607-S03960113482012081400000) .
  2. E2 CHECK FOR DTC B1131:02 OR DTC B1131:08 Ignition ON. Using a scan tool, perform the SCCM self-test. Is DTC B1131:02 or DTC B1131:08 present? Yes : GO to «PINPOINT TEST B»(ref-494607-S03960113482012081400000) . No : GO to E3.
  3. E3 CHECK FOR DTC B10AD:02 OR DTC B10AD:08 Review the results from the SCCM self-test. Is DTC B10AD:02 or DTC B10AD:08 present? Yes : GO to E12 . No : GO to E4.
  4. E4 VERIFY THE RAIN SENSITIVE WIPER FEATURE IS ENABLED IN THE VEHICLE MESSAGE CENTER Access the vehicle settings in the message center using the steering wheel controls. Make sure the rain sensitive feature is enabled. Is the rain sensitive feature enabled? Yes : GO to E5. No : ENABLE the rain sensitive feature. INFORM the customer how to enable/disable the rain sensitive feature.
  5. E5 CHECK THE INPUT FROM THE WIPER/WASHER SWITCH Using a scan tool, monitor the SCCM wiper/washer switch PIDs: F_WIP_INT_D1 F_WIP_INT_D2 F_WIP_INT_D3 F_WIP_INT_D4 F_WIP_INT_D5 Cycle the wiper/washer switch from off through each of the auto/ intermittent sensitivity settings. Do the PIDs correspond correctly with each setting selection? Yes : GO to E6. No : INSTALL a new wiper/washer switch. REFER to «WIPER/WASHER SWITCH»(ref-494607-S04029453822012081400000) . TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM. REFER to «STEERING COLUMN SWITCHES»(ref-494582) .
  6. E6 CHECK THE WINDSHIELD FOR DAMAGE Ignition OFF. 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? Yes : INSTALL a new windshield. REFER to «GLASS, FRAMES AND MECHANISMS»(ref-494630) . No : GO to E7.
  7. E7 CHECK THE WINDSHIELD GLASS FOR STREAKING Ignition ON. Turn the wiper/washer 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? Yes : GO to E8. No : GO to E10 .
  8. E8 CHECK THE WINDSHIELD WIPER BLADES FOR STREAKING Ignition OFF. Clean the windshield glass with glass cleaner. Clean the wiper blades with isopropyl alcohol swabs. Wipe the entire length of the wiper blades. Ignition ON. Place the wiper/washer 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? Yes : GO to E9. No : INSTALL new wiper blades. GO to E9.
  9. E9 RECHECK THE RAIN SENSITIVE WIPERS OPERATION Place the wiper/washer 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? Yes : The system is operating correctly at this time. The concern may have been caused by poor wipe quality on the windshield around the rain sensor. No : GO to E10.
  10. E10 CHECK FOR THE PRESENCE OF THE LENS GEL Ignition OFF. Lightly press the rain sensor against the windshield and release the rain sensor clips. Does the rain sensor remain adhered to the windshield? Yes : ATTACH the retaining clips. GO to E11. No : The sensor gel-type lens is missing or damaged. INSTALL a new rain sensor. REFER to «RAIN SENSOR»(ref-494607-S33127384202012081400000) .
  11. E11 INSPECT THE RAIN SENSOR MOUNTING AREA NOTE: The rain sensor gel-type lens can be damaged or contaminated during rain sensor removal, rain sensor bracket separation or incorrect installation. 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? Yes : GO to E12. No : REMOVE and INSTALL the rain sensor correctly. REFER to «RAIN SENSOR»(ref-494607-S33127384202012081400000) . TEST the system for normal operation. If the concern is still present, GO to E15 .
  12. E12 CHECK THE RAIN SENSOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Rain Sensor C914. Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C914-1 CBB45 (YE) - Ground Is the voltage greater than 11 volts? Yes : GO to E13. No : VERIFY BJB fuse 45 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the appropriate SYSTEMS WIRING DIAGRAMS article to identify the possible causes of the circuit short.
  13. E13 CHECK THE RAIN SENSOR GROUND CIRCUIT FOR AN OPEN Ignition OFF. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C914-3 GD133 (BK) - Ground Is the resistance less than 3 ohms? Yes : GO to E14. No : REPAIR the circuit.
  14. E14 CHECK THE LIN CIRCUIT FOR AN OPEN Disconnect: SCCM C2414B. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C914-2 VDN05 (YE/GY) C2414A-20 VDN05 (YE/GY) Is the resistance less than 3 ohms? Yes : GO to E15. No : REPAIR the circuit.
  15. E15 CHECK FOR CORRECT RAIN SENSOR OPERATION Inspect the rain sensor connector. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the rain sensor connector. Make sure it seats and latches correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes : INSTALL a new rain sensor. REFER to «RAIN SENSOR»(ref-494607-S33127384202012081400000) . TEST the system for normal operation. If the concern is still present, INSTALL a new windshield wiper motor. REFER to «WIPER MOTOR - WINDSHIELD»(ref-494607-S05079455922012081400000) . No : The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

When the wiper/washer switch is placed in the OFF position, the motor continues to operate until the motor returns to the PARK position and the internal Hall-effect sensor senses the motor magnet. The output to the integral run/park relay deactivates the relay and disconnects the voltage to the motor.

This pinpoint test is intended to diagnose the following

  1. Wiper mounting arm and pivot shaft
  2. Wiper motor

When the wiper/washer switch is placed in the WASH position, the SCCM sends the request to the windshield wiper motor through the LIN. The windshield wiper motor controls the direction of the washer pump to direct washer fluid to the windshield or rear window.

When a windshield wash is requested, the windshield wiper motor supplies voltage to the washer pump. Ground is provided to the washer pump through the normally closed contact in the rear washer relay (located in the Battery Junction Box (BJB)).

When a rear window wash is requested, the windshield wiper motor activates the rear washer relay. When the rear washer relay is activated, it provides voltage to the washer pump. Ground is provided to the washer pump through the windshield wiper motor.

This pinpoint test is intended to diagnose the following

  1. Fuse
  2. Rear washer relay
  3. Wiring, terminals or connectors
  4. Wiper/washer switch
  5. Windshield wiper motor

The wiper/washer switch is mounted to the Steering Column Control Module (SCCM). The SCCM sends the wiper mode request to the windshield wiper motor through the LIN. When the request is received, the windshield wiper motor supplies a momentary ground to the rear window wiper motor. The position of the wiper/washer switch determines the frequency of this ground. When the wiper/washer switch is in the INT 1 position, the windshield wiper motor provides a momentary ground approximately once every 10 to 12 seconds. In the INT 2 position, the momentary ground is provided approximately once every 3 to 5 seconds. When the ground is present, it activates an integral relay within the rear window wiper motor which activates the motor. The rear window wiper motor is self parking.

This pinpoint test is intended to diagnose the following

  1. Fuse
  2. Wiring, terminals or connectors
  3. Wiper/washer switch
  4. Rear window wiper motor
  5. Windshield wiper motor
  6. SCCM

The wiper/washer switch is mounted to the Steering Column Control Module (SCCM). The SCCM sends the wiper mode request to the windshield wiper motor through the LIN. When the request is received, the windshield wiper motor supplies a momentary ground to the rear window wiper motor. The position of the wiper/washer switch determines the frequency of this ground. When the wiper/washer switch is in the INT 1 position, the windshield wiper motor provides a momentary ground approximately once every 10 to 12 seconds. In the INT 2 position, the momentary ground is provided approximately once every 3 to 5 seconds. When the ground is present, it activates an integral relay within the rear window wiper motor which activates the motor. The rear window wiper motor is self parking.

This pinpoint test is intended to diagnose the following

  1. Wiring, terminals or connectors
  2. Wiper/washer switch
  3. Rear window wiper motor
  4. Windshield wiper motor
  5. SCCM

When the wiper/washer switch is placed in the OFF position, the motor continues to operate until the motor returns to the PARK position and the internal Hall-effect sensor senses the motor magnet. The output to the integral run/park relay deactivates the relay and disconnects the voltage to the motor.

This pinpoint test is intended to diagnose the following

  1. Wiper mounting arm and pivot shaft
  2. Rear wiper motor

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