Why do windshield wipers stay on all the time?

Excellent diagnostics by our resident Pro Expert Jeff, which should be down here. It makes the question solved and will appear in a search of the site as 'Solved'. It also gives you points and awards.

• Jeff Armer Nov 17, 2021
• could be the wiper relay contacts are stuck closed causing power (battery voltage ) to be supplied all the time ,or a problem with the GEM module .
  
  Windshield Wiper
  
  The windshield wiper system consists of the following parts:
  
  Windshield wiper arms (2)
  Windshield wiper motor on the air cowl trim panel
  Windshield wiper linkage
  Windshield wiper blades (2)
  Wiper relay, in the central junction box (CJB)
  Generic electronic module (GEM)
  Wiper/washer switch (part of the multi-function switch), consisting of:
  wiper switch
  washer switch (pressure switch) and
  delay control switch (rotary switch, depending on model)
  
  Inspection and Verification
  
  Verify the customer concern.
  Visually inspect for obvious signs of mechanical and electrical damage:
  
  
  Visual Inspection Chart Mechanical Electrical
  Wiper blades
  Front wiper linkage
  Fluid reservoir - windshield washing system (level)
  Hoses
  Nozzles
  Central junction box (CJB) fuse(s):
  43 (15A)
  56 (20A)
  Pump
  Wiper/washer switch
  Windshield wiper relay
  Rear wiper relay
  Generic electronic module (GEM)
  Circuitry
  
  
  
  If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  If the cause is not visually evident, connect the scan tool to the data link connector (DLC) and select the vehicle to be tested from the scan tool menu. If the scan tool does not communicate with the vehicle:
  check that the program card is correctly installed.
  check the connections to the vehicle.
  check the ignition switch position.
  If the scan tool still does not communicate with the vehicle, refer to the scan tool operating manual.
  Carry out the scan tool data link test. If the scan tool responds with:
  ISO or CAN circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
  No response/not equipped for GEM, refer to Section 419-10 .
  System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the GEM.
  If the DTCs retrieved are related to the concern, go to the Generic Electronic Module (GEM) Diagnostic Trouble Code (DTC) Index.
  If no DTCs related to the concern are retrieved, GO to Symptom Chart .
• 
  Jeff Armer Nov 17, 2021
  B1438 Wiper Mode Select Switch Circuit Failure GEM Go To Pinpoint Test H .
  B1446 Wiper Park Sense Circuit Failure GEM Go To Pinpoint Test G .
  B1451 Wiper Wash/Delay Switch Circuit Failure GEM Go To Pinpoint Test H .
  B1611 Wiper Rear Mode Select Switch Failure GEM Go To Pinpoint Test F .
  B2107 Front Wiper Motor Relay Circuit Short To Battery GEM Go To Pinpoint Test H .
  B2110 Front Wiper Motor Relay Circuit Open GEM Go To Pinpoint Test H
  
  
  checking for codes in the gem module mite point you into a diagnostic direction .
  
  The wipers stay on continuously
  Wiper/washer switch
  Windshield wiper motor
  Windshield wiper relay
  Generic electronic module (GEM)
  Central junction box (CJB)
  Circuitry
  Go To Pinpoint Test B .
  
  Pinpoint Test B: The Wipers Stay On Continuously
  
  Normal Operation
  When low speed operation is selected, the windshield wiper motor receives voltage through circuit 32-KA10 (WH/GN). When high speed operation is selected, the windshield wiper motor receives voltage through circuit 32-KA11 (WH/BK). When intermittent operation is selected, the generic electronic module (GEM) sends an intermittent ground signal to the windshield wiper relay through circuit 91S-KA12 (BK/WH). The relay energizes and sends voltage to the wiper/washer switch through circuit 32-KA19 (WH/BK). The wiper/washer switch sends voltage to the windshield wiper motor through circuit 32-KA10 (WH/GN). When the wiper/washer switch is turned to the off position, or between intermittent pulses, the internal run/park switch in the windshield wiper motor provides voltage to the windshield wiper relay through circuit 32-KA9 (WH/BU) until the wiper motor completes its cycle and opens the circuit
  
  Possible Causes
  Circuit 32-KA10 (WH/GN) short to voltage
  Circuit 32-KA11 (WH/BK) short to voltage
  Circuit 32-KA19 (WH/BK) short to voltage
  Circuit 91S-KA12 (BK/WH) short to ground
  Wiper/washer switch
  Windshield wiper motor
  Windshield wiper relay
  Central junction box (CJB)
  GEM
  
  
  PINPOINT TEST B: THE WIPERS STAY ON CONTINUOUSLY
  Test Step Result / Action to Take
  B1 DETERMINE THE WIPE SPEED
  Move the wiper lever to the OFF position.
  Key in ON position.
  Do the windshield wipers move at a fast rate?
  Yes
  GO to B2 .
  
  No
  GO to B4 .
  B2 CHECK THE WIPER/WASHER SWITCH FOR NORMAL OPERATION
  Key in OFF position.
  Disconnect: Wiper/Washer Switch C2081.
  Key in ON position.
  Do the windshield wipers move at a fast rate?
  Yes
  GO to B3 .
  
  No
  CHECK the wiper/washer switch for correct operation.
  Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  
  If necessary, INSTALL a new multi-function switch. REFER to Section 211-05 . TEST the system for normal operation.
  B3 CHECK CIRCUIT 32-KA11 (WH/BK) FOR A SHORT TO VOLTAGE
  Key in OFF position.
  Disconnect: Windshield Wiper Motor C125.
  Key in ON position.
  Measure the voltage between wiper/washer switch C2081-8, circuit 32-KA11 (WH/BK), harness side and ground.
  
  Is the voltage greater than 10 volts?
  Yes
  REPAIR the circuit. TEST the system for normal operation.
  
  No
  INSTALL a new windshield wiper motor. REFER to Wiper Motor - Windshield in this section. TEST the system for normal operation.
  B4 CHECK THE WIPER/WASHER SWITCH FOR NORMAL OPERATION
  Key in OFF position.
  Disconnect: Wiper/Washer Switch C2081.
  Key in ON position.
  Do the front wipers move at a slow rate?
  Yes
  GO to B5 .
  
  No
  GO to B6 .
  B5 CHECK CIRCUIT 32-KA10 (WH/GN) FOR A SHORT TO VOLTAGE
  Key in OFF position.
  Disconnect: Windshield Wiper Motor C125.
  Key in ON position.
  Measure the voltage between wiper/washer switch C2081-9, circuit 32-KA10 (WH/GN), harness side and ground.
  
  Is the voltage greater than 10 volts?
  Yes
  REPAIR the circuit. TEST the system for normal operation.
  
  No
  INSTALL a new windshield wiper motor. REFER to Wiper Motor - Windshield in this section. TEST the system for normal operation.
  B6 CARRY OUT THE WIPER/WASHER SWITCH COMPONENT TEST
  Carry out the wiper/washer switch component test.
  Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  
  Does the wiper/washer switch pass the component test?
  Yes
  GO to B7 .
  
  No
  INSTALL a new multi-function switch. REFER to Section 211-05 . TEST the system for normal operation.
  B7 CHECK CIRCUIT 32-KA19 (WH/BK) FOR A SHORT TO VOLTAGE
  Key in OFF position.
  Connect: Wiper/Washer Switch C2081.
  Disconnect: CJB C270c.
  Key in ON position.
  Do the windshield wipers move at a slow rate?
  Yes
  REPAIR the circuit. TEST the system for normal operation.
  
  No
  GO to B8 .
  B8 CHECK THE CJB FOR A SHORT TO VOLTAGE
  Key in OFF position.
  Disconnect: Windshield Wiper Relay C2042.
  Connect: CJB C270c.
  Key in ON position.
  Do the windshield wipers move at a slow rate?
  Yes
  INSTALL a new CJB. TEST the system for normal operation.
  
  No
  GO to B9 .
  B9 CHECK THE WINDSHIELD WIPER RELAY
  Carry out the windshield wiper relay component test.
  Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  
  Does the windshield wiper relay function normally?
  Yes
  GO to B10 .
  
  No
  INSTALL a new windshield wiper relay. TEST the system for normal operation.
  B10 CHECK CIRCUIT 91S-KA12 (BK/WH) FOR A SHORT TO GROUND
  Key in OFF position.
  Connect: Windshield Wiper Relay C2042.
  Disconnect: GEM C201e.
  Key in ON position.
  Do the windshield wipers move at a slow rate?
  Yes
  REPAIR the circuit. TEST the system for normal operation.
  
  No
  GO to B11 .
  B11 CHECK FOR CORRECT GEM OPERATION
  Disconnect all the GEM connectors.
  Check for:
  corrosion.
  pushed-out pins.
  Connect all the GEM connectors and make sure they seat correctly.
  Operate the system and verify the concern is still present.
  Is the concern still present?
  Yes
  INSTALL a new GEM. REFER to Section 419-10 . TEST the system for normal operation.
  
  No
  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
  

Do you know how to test automotive electrical circuit's ? Viewing wiring diagrams an using a DVOM - digital volt ohm meter ? Free wiring diagrams here . http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine . Under system click on body & accessories , then under subsystem click on wiper/washer . Click the search button then the blue link.
An using factory pin point diagnostic's .

• The wipers stay on continuously

• Windshield wiper motor.
• Multifunction switch.
• Circuitry.

• Go To Pinpoint Test B .

PINPOINT TEST B: THE WIPERS STAY ON CONTINUOUSLY Test Step Result / Action to Take B1 CHECK THE MULTIFUNCTION SWITCH

• Key in OFF position.
• Disconnect: Multifunction Switch C202b.
• Carry out the multifunction switch component test. Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  
• Did the multifunction switch pass the component test?

Yes
GO to B2 .

No
INSTALL a new multifunction switch. REFER to Section 211-05 . B2 CHECK CIRCUIT 57 (BK) FOR AN OPEN

• Measure the resistance between C202b pin 5, circuit 57 (BK), harness side and ground.
• Is the resistance less than 5 ohms?

Yes
GO to B3 .

No
REPAIR the circuit. TEST the system for normal operation. B3 CHECK CIRCUITS 56 (DB/OG), 58 (WH), 61 (YE/RD), AND 63 (RD) FOR SHORTS

• Disconnect: Windshield Wiper Motor C125.
• Using the following table, measure the resistance between the windshield wiper motor C125 harness side and ground:
  
  Windshield Wiper Motor C125 Ground pin 10, circuit 56 (DB/OG) ground pin 11, circuit 58 (WH) ground pin 1, circuit 61 (YE/RD) ground pin 9, circuit 63 (RD) ground
• Is the resistance greater than 10,000 ohms?

Yes
GO to B4 .

No
REPAIR the circuit(s) in question. TEST the system for normal operation. B4 CHECK FOR CORRECT WIPER MOTOR OPERATION

• Disconnect all wiper motor connectors.
• Check for:
  • corrosion
  • pushed-out pins
• Connect all wiper motor connectors and make sure they seat correctly.
• Operate the system and verify the concern is still present.
• Is the concern still present?

Yes
GO to B5 .

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. TEST the system for normal operation. B5 CHECK THE WINDSHIELD WIPER MOTOR

• Key in OFF position.
• Disconnect: Windshield Wiper Motor C125.
• Carry out the windshield wiper motor component test as outlined in this section.
• Did the windshield wiper motor pass the component test?

Yes
The system is operating correctly at this time. Concern may have been caused by binding or incorrect pivot arm adjustment. REFER to Windshield Wiper Blade and Pivot Arm Adjustment in this section. TEST the system for normal operation.

No
INSTALL a new windshield wiper motor. REFER to Windshield Wiper Motor in this section.

Check fuses or washer pump. .replace.

The windshield wiper motor is a smart wiper motor with an integrated electronics module. The internal components of the motor are the high/low relay, washer pump relay, and the run/park relay and associated electronics.
The windshield wiper motor receives its inputs from the windshield wiper/washer switch. These signals are ground reference signals. When the switch is placed in different positions, various input signals are selected and sent through circuits to the motor. The windshield wiper motor module identifies these selected input signals and activates the motor to the selected function.!
Your probably going to need a new wiper motor ! ! ! But you should always test before replacing parts !
Visual Inspection Chart Mechanical Electrical

• Windshield washer pump hoses
• Windshield wiper mounting arm and pivot shaft

• Bussed electrical center (BEC) fuse 10 (30A)
• Smart junction box (SJB) fuse 3 (10A)
• Circuitry
• Windshield wiper motor
• Windshield washer pump
• Windshield wiper/washer switch

• The wipers stay on continuously

• Circuitry
• Windshield wiper motor
• Windshield wiper/washer switch

• Go To Pinpoint Test C .

PINPOINT TEST C: THE WIPERS STAY ON CONTINUOUSLY CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
Test Step Result / Action to Take C1 CHECK THE WINDSHIELD WIPER/WASHER SWITCH

• Key in OFF position.
• Disconnect: Windshield Wiper/Washer Switch C2137.
• Carry out the windshield wiper/washer switch component test. Refer to Wiring Diagrams Cell 149 for schematic and connector information.
  
• Does the windshield wiper/washer switch pass the component test?

Yes
GO to C2 .

No
INSTALL a new windshield wiper/washer switch. REFER to Wiper/Washer Switch in this section. C2 CHECK CIRCUITS 56 (DB/OG), 58 (WH), 61 (YE/RD), AND 63 (RD) FOR A SHORT TO GROUND

• Disconnect: Windshield Wiper Motor C125.
• Measure the resistance between the windshield wiper motor C125, harness side and ground as follows:
  
  Windshield Wiper Motor C125 Pin Circuit C125-10 56 (DB/OG) C125-11 58 (WH) C125-1 63 (RD) C125-9 61 (YE/RD)
  
  
• Are the resistances greater than 10,000 ohms?

Yes
GO to C3 .

No
REPAIR the circuit(s). TEST the system for normal operation. C3 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION

• Disconnect all the windshield wiper motor connectors.
• Check for:
  • corrosion.
  • pushed-out pins.
• Connect all the windshield wiper motor connectors and make sure they seat correctly.
• Operate the system and verify the concern is still present.
• Is the concern still present?

Yes
INSTALL a new windshield wiper motor. REFER to Wiper Motor in this section. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
You

car stays, on, does that mean engine will not shut down.
or mean the wipers stay on, after turning them off
1:yes, wiper, bad internal wiper switch, (bad wiper motor)
2: no:?
wiring hacks (after market installs of something gone worn)
bad igniton switch.

BAD WIPER SWITCH

sounds like the the park switch inside the wiper motor is faulty/stuck

To Question on Windshield wipers stay on. Your parking paw is defective. Its best to replace the windshield motor, There usally easy to replace

probably the relays for the wipers and the fan,you should find out what is causing those issues and you may just fix everything,but it is a good place to start.

it is either the multifunction switch (wiper switch) or the wiper motor.