Wiper/Washer System Description and Operation
The windshield wiper/washer system consists of front and rear wipers. The front and rear wipers are operative when the vehicle is in accessory or run. The front wipers have 4 different modes: Mist, Intermittent, Low, and High. When the front wipers are in the intermittent mode, there are 5 delay modes to chose from, commanded by the windshield wiper washer switch through the body control module (BCM). The rear wipers has an only one mode.
Rear Wiper Operation
During rear wiper operation, the wiper switch portion of the rear wiper/washer switch provides a ground signal to the rear wiper motor indicating the rear wipers are requested. At this point the rear will motor will activate. The wiper motor is supplied B+ through the I/P fuse block and accessory voltage from the BCM.
Rear wiper operation will be suspended when the liftgate is open. The rear wiper motor monitors the liftgate ajar switch to determine when the liftgate is open.
Low and Intermittent Operation (Front Wipers)
During Low and Intermittent operation, the windshield wiper washer switch provides a resistor ladder to determine the amount of wiper delay requested. The wiper delay is determined by the BCM based on the input from the wiper washer switch. In the Low and Intermittent position, the windshield wiper washer switch supplies a ground signal to the windshield wiper switch low signal circuit indicating to the BCM that intermittent or low speed wiper operation is request. The resistor ladder determines the voltage signal seen at the BCM, with various voltage levels equaling different delay speeds. Upon this signal, the BCM will apply B+ to the WIPER PCB relay coil. The relay coil will become energized, creating a magnetic field and closing the relay switch. B+ will be applied to the windshield wiper motor low control circuit. During low speed operation, the BCM will supply B+ to relay continuously, operating the wipers at a steady low speed. During intermittent operation, the BCM will selectively supply B+, providing the intermittent delay.
High Operation (Front Wipers)
In the High position, the windshield wiper washer switch supplies a ground signal to the windshield wiper switch high signal circuit indicating to the BCM that high speed wipers are requested. Upon this signal, the BCM will ground the WIPER HIGH PCB relay coil via the Front Windshield Wiper High Signal Control circuit. The relay coil will become energized, creating a magnetic field and closing the relay switch. B+ will be applied to the windshield wiper motor high control circuit.
Mist Operation (Front Wipers Only)
In the Mist position, the windshield wipers make one sweep at low speed and returns to the park position and functions in the same manner as the low speed operation. If the windshield wiper washer switch is held in Mist position, the windshield wipers will continue to operate until the switch is released.
Park Position Operation
When the wipers are commanded on, B+ is supplied to the windshield wiper motor park switch signal. With B+ applied, the wipers will park when in the at rest state.
Wash Operation (Front and Rear Wipers)
The front and rear washer systems use a common windshield washer fluid pump. When either the front or rear wiper is in the washer position voltage will be supplied to one side of the windshield washer fluid pump (depending on whether front or rear washer has been requested), while the other side of the pump is grounded.
During front washer requests, the windshield wiper washer switch supplies a ground signal to the windshield washer switch signal circuit indicating to the BCM that washers are requested. Upon this signal, the BCM will ground the WIPER PCB relay coil and the FRT WASHER PCB relay. This will operate the wipers at a low speed and activate the washer pump for as long as the Wash switch is held.
During front washer requests, the washer portion of the rear wiper/washer switch provides ground to the RR WASH PCB relay and also supplies a signal to the rear wiper motor indicating washer and wiper events are requested.
Scheme 1
Scheme 2
Scheme 3
Connector Part Information
OEM: 15332141
Service: 88986249
Description: 6-Way F GT 150 Series, Unsealed (BK)
Terminal Part Information
Pins: A, C, B, D, E, F
Terminal/Tray: 12191812/19
Core/Insulation Crimp: Pins A, C - C/A
Core/Insulation Crimp: Pins B, D, E, F - E/C
Release Tool/Test Probe: 15315247/J-35616-2A (GY)
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| A | BK | 550 | Ground |
| B | L-GN | 2270 | Rear Window Washer Relay Control |
| C | RD/WH | 2140 | Battery Positive Voltage |
| D | YE | 243 | Accessory Voltage |
| E | GY | 391 | Rear Window Wiper Switch Signal |
| F | PK/BK | 1303 | Liftgate Ajar Switch Signal |
REAR WINDOW WIPER MOTOR FUNCTION TABLE
Scheme 4
Connector Part Information
OEM: HCMPB-06-K
Service: 19115655
Description: 6-Way F HCM Series (BK)
Terminal Part Information
Terminal/Tray: SHCM-A03T-P025/20
Core/Insulation Crimp: J/J
Release Tool/Test Probe: 12094429/J-35616-64B (L-BU)
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | BK/WH | 1551 | Ground |
| 2 | GY | 391 | Rear Window Wiper Switch Signal |
| 3 | L-GN | 2270 | Rear Window Washer Relay Control |
| 4 | OG | 192 | Front Fog Lamp Switch Signal/Fog Lamps Enable (T96) |
| 5 | BK | 1450 | Ground |
| 6 | PU/WH | 1382 | LED Dimming Signal (T96) |
REAR WIPER, WASHER AND FOG LAMP SWITCH FUNCTION TABLE
Scheme 5
Connector Part Information
OEM: 12185025
Service: 89046634
Description: 2-Way F Mini Timer (BK)
Terminal Part Information
Terminal/Tray: 60012941/21
Core/Insulation Crimp: See Suzuki Terminal Repair Kit
Release Tool/Test Probe: 12122378/J-35616-4A (PU)
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | D-GN | 392 | Rear Window Washer Pump Control |
| 2 | D-BU | 298 | Rear Window Washer Pump Control |
WINDSHIELD WASHER FLUID PUMP FUNCTION TABLE
Scheme 6
Connector Part Information
OEM: 12084891
Service: 15305874
Description: 5-Way F Metri-Pack 280 Series, Sealed (M-GY)
Terminal Part Information
Terminal/Tray: 12077411/2
Core/Insulation Crimp: 2/5
Release Tool/Test Probe: 12094430/J-35616-4A (PU)
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| A | Not Used | ||
| B | YE | 196 | Windshield Wiper Motor Park Switch Signal |
| C | BK | 1250 | Ground |
| D | PU | 92 | Windshield Wiper Motor High Speed |
| E | D-GN | 95 | Windshield Wiper Motor Low Speed |
WINDSHIELD WIPER MOTOR FUNCTION TABLE
Scheme 7
Connector Part Information
OEM: 12059800
Service: 15306169
Description: 5-Way F Metri-Pack 150 Series (BK)
Terminal Part Information
Terminal/Tray: 12064971/5
Core/Insulation Crimp: E/C
Release Tool/Test Probe: 12094429/J-35616-2A (GY)
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| A | Not Used | ||
| B | PK | 94 | Rear Wiper Switch Signal |
| C | L-GN | 1715 | Windshield Wiper Switch High Signal |
| D | BK/WH | 1251 | Ground |
| E | L-BU | 1714 | Windshield Wiper Switch Low Signal |
WINDSHIELD WIPER AND WASHER SWITCH FUNCTION TABLE
Scheme 8
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Scheme 10
Circuit System Description
The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation.
The BCM controls the windshield wiper motor through two output controls, controlling two different PCB relays which control the desired wiper speed, high or low.
Circuit/System Description
The body control module (BCM) controls the washer motor based on an input from the windshield wiper washer switch.
The BCM monitors the washer switch through the windshield washer switch signal circuit. When the WASH switch is closed, ground is supplied to the windshield washer switch signal circuit. When this is seen, the BCM will command the windshield washer fluid pump and the low speed wipers on.
The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation.
The BCM controls the windshield wiper motor through two output controls, controlling two different PCB relays which control the desired wiper speed, high or low.
The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation.
The BCM controls the windshield wiper motor through two output controls, controlling two different PCB relays which control the desired wiper speed, high or low.
The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation.
The BCM controls the windshield wiper motor through two output controls, controlling two different PCB relays which control the desired wiper speed, high or low.
The rear wiper is controlled based on an input from the rear wiper/washer switch. When the wiper portion of the rear wiper/washer switch is closed, a ground signal is provided to the rear window wiper motor indicating rear wiper operation is request. The rear wiper motor receives B+ voltage from the I/P fuse block and accessory voltage from the BCM. The rear wiper motor also monitors the state of the liftgate ajar indicator and will suspend rear wiper operating when the liftgate is open.
The body control module (BCM) controls the washer motor based on an input from the windshield wiper washer switch.
The BCM monitors the washer switch through the windshield washer switch signal circuit. When the WASH switch is closed, ground is supplied to the windshield washer switch signal circuit. When this is seen, the BCM will command the windshield washer fluid pump and the low speed wipers on.
The rear washer is controlled based on an input from the rear wiper/washer switch. When the wiper portion of the rear wiper/washer switch is closed, a ground signal is provided to the RR WASH PCB relay indicating rear washer operation is requested. With ground provided to the RR WASH PCB relay coil, the relay is energized and B+ is supplied to the washer pump.