Pinpoint Test F: The High Wiper Speed Does Not Operate Correctly - Front
Wipers and Washers
Pinpoint Test F: The High Wiper Speed Does Not Operate Correctly - Front
Refer to Wiring Diagrams Set 81, Wipers and Washers for schematic and connector information. Electrical Diagrams
Normal Operation
When high-speed mode is requested by the wiper/washer switch, a ground signal is sent to the Generic Electronic Module (GEM) through circuit 91S-KA11 (BK/RD). The GEM (Generic Electronic Module) then supplies voltage to the windshield wiper motor through circuit 32-KA11 (WH/BK).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Multifunction switch
- Windshield wiper motor
- GEM (Generic Electronic Module)
PINPOINT TEST F : THE HIGH WIPER SPEED DOES NOT OPERATE CORRECTLY - FRONT
NOTICE: 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.
F1 CHECK FOR VOLTAGE TO THE WINDSHIELD WIPER MOTOR IN HIGH SPEED
- Disconnect: Windshield Wiper Motor C125.
- Ignition ON.
- Activate the wiper/washer switch to the HIGH position.
- With the wiper/washer switch in the HIGH position, measure the voltage between windshield wiper motor C125-4, circuit 32-KA11 (WH/BK), harness side and ground.
Is the voltage greater than 10 volts?
Yes
INSTALL a new windshield wiper motor. REFER to Wiper Motor - Windshield . TEST the system for normal operation.
No
GO to F2.
F2 CHECK THE HIGH SPEED WIPER/WASHER SWITCH INPUT CIRCUIT
- Ignition OFF.
- Disconnect: GEM (Generic Electronic Module) C201C.
- While operating the wiper/washer switch to the HIGH-speed position, measure the resistance between GEM (Generic Electronic Module) C201C-23, circuit 91S-KA11 (BK/RD), harness side and ground.
Is the resistance less than 5 ohms between the GEM (Generic Electronic Module) and ground when the wiper/washer switch is in the HIGH-speed position; and greater than 10,000 ohms between the GEM (Generic Electronic Module) and ground when the wiper/washer switch is moved out of the HIGH-speed position?
Yes
GO to F4.
No
GO to F3.
F3 CHECK THE WIPER/WASHER SWITCH
- Disconnect: Wiper/Washer Switch C2081.
- Carry out the Wiper/Washer Switch Component Test.
Did the wiper/washer switch pass the component test?
Yes
REPAIR circuit 91S-KA11 (BK/RD) for an open. TEST the system for normal operation.
No
INSTALL a new wiper/washer switch. TEST the system for normal operation.
F4 CHECK CIRCUIT 32-KA11 (WH/BK) FOR AN OPEN
- Disconnect: GEM (Generic Electronic Module) C201A.
- Disconnect: Windshield Wiper Motor C125.
- Measure the resistance between GEM (Generic Electronic Module) C201A-3, circuit 32-KA11 (WH/BK), harness side and windshield wiper motor C125-4, circuit 32-KA11 (WH/BK), harness side.
Is the resistance less than 5 ohms?
Yes
GO to F5.
No
REPAIR the circuit. TEST the system for normal operation.
F5 CHECK FOR CORRECT GEM (Generic Electronic Module) MODULE OPERATION
- Disconnect the GEM (Generic Electronic Module) electrical connectors.
- Check for:
- corrosion.
- pushed-out pins.
- Connect the GEM (Generic Electronic Module) connectors and make sure they seat correctly.
- Reconnect all the wiper system components.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new GEM (Generic Electronic Module). 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.