Pinpoint Test G: The Washer Pump is Inoperative - Front/Rear
Wipers and Washers
Pinpoint Test G: The Washer Pump is Inoperative - Front/Rear
Refer to Wiring Diagram Set 81, Wipers and Washers for schematic and connector information Electrical Diagrams.
Normal Operation
The front and rear washer systems share the same washer pump motor. The Body Control Module (BCM) supplies a signal voltage(s) to the wiper/washer switch for the front/rear wash functions. Each function has its own dedicated signal (sense) line. The wiper/washer switch physically grounds the signal voltage when a wash function is selected. The BCM (Body Control Module) reacts to the grounded signal voltage(s) and its integral electronics make a decision on what polarity to supply the washer pump motor with. The BCM (Body Control Module) changes the polarity to the washer pump motor in reaction to a front or rear wash selection, changing the rotational direction of the motor.
- DTC B1051:92 (Front Washer Switch: Performance or Incorrect Operation)- sets during self-test when the wiper/washer switch front washer circuit to the BCM (Body Control Module) or the front washer pump circuit is grounded.
- DTC B1052:92 (Rear Washer Switch: Performance or Incorrect Operation)- sets during self-test when the wiper/washer switch rear washer circuit to the BCM (Body Control Module) or rear washer pump circuit is grounded.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Wiper/washer switch
- Washer pump
- BCM (Body Control Module)
PINPOINT TEST G : THE WASHER PUMP IS INOPERATIVE - FRONT/REAR
G1 CHECK THE BCM (Body Control Module) PIDs FRONT WASHER SWITCH (FRNWIPER_Wsh) AND REAR WASHER SWITCH INPUT (RWASH_SW)
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DataLogger- BCM (Body Control Module).
- NOTE: The rear window washer feature is only available on 5-door hatchback vehicles.
Monitor the BCM (Body Control Module) PIDs FRNWIPER_Wsh and RWASH_SW while operating the wiper/washer switch front and rear washer modes.
Does the status of each PID match the wiper/washer switch setting?
Yes
GO to G7.
No
GO to G2.
G2 CHECK THE WIPER/WASHER SWITCH
- Ignition OFF.
- Disconnect: Wiper/Washer Switch C2081.
- Carry out the wiper/washer switch component test.
Does the wiper/washer switch pass the component test?
Yes
GO to G3.
No
INSTALL a new wiper/washer switch. TEST the system for normal operation.
G3 CHECK VOLTAGE AND GROUND CIRCUITS TO THE WIPER/WASHER SWITCH
- Ignition ON.
- Measure the voltage between wiper/washer switch C2081-1, circuit CBP15 (BN/BU), harness side and C2081-6, circuit GD115 (BK/GY), harness side.
Is the voltage greater than 10 volts?
Yes
GO to G5.
No
GO to G4.
G4 CHECK THE VOLTAGE CIRCUIT TO THE WIPER/WASHER SWITCH FOR AN OPEN OR HIGH RESISTANCE
- Measure the voltage between wiper/washer switch C2081-1, circuit CBP15 (BN/BU), harness side and ground.
Is the voltage greater than 10 volts?
Yes
REPAIR circuit GD115 for an open or high resistance. TEST the system for normal operation.
No
VERIFY Central Junction Box (CJB) fuse 15 (15A) is OK. If OK, REPAIR circuit CBP15 (BN/BU). If not OK, REFER to the Wiring Diagrams to identify the possible causes of the short to ground Electrical Diagrams.
G5 CHECK THE WIPER/WASHER SWITCH WASHER PUMP MOTOR REQUEST CIRCUITS TO THE BCM (Body Control Module) FOR AN OPEN OR HIGH RESISTANCE
- Ignition OFF.
- Disconnect: BCM (Body Control Module) C2280B.
- Measure the resistance between wiper/washer switch C2081-2, circuit CRW07 (GY/BN), harness side and BCM (Body Control Module) C2280B-12, circuit CRW07 (GY/BN), harness side and between wiper/washer switch C2081-7, circuit CRW12 (GY/OG), harness side and BCM (Body Control Module) C2280B-14, circuit CRW12 (GY/OG), harness side
Are the resistances less than 5 ohms?
Yes
GO to G6.
No
REPAIR the affected circuit. TEST the system for normal operation.
G6 CHECK THE WIPER/WASHER SWITCH WASHER PUMP MOTOR REQUEST CIRCUITS TO THE BCM (Body Control Module) FOR A SHORT TO GROUND
- Measure the resistance between wiper/washer switch C2081-2, circuit CRW07 (GY/BN), harness side and ground and between wiper/washer switch C2081-7, circuit CRW12 (GY/OG), harness side and ground.
Are the resistances greater than 10,000 ohms?
Yes
GO to G10.
No
REPAIR the affected circuit. CLEAR the BCM (Body Control Module) DTCs. REPEAT the self-test. TEST the system for normal operation.
G7 CHECK FOR VOLTAGE AND GROUND TO THE WASHER PUMP MOTOR
- Disconnect: Washer Pump Motor C137.
- NOTE: On 5-door hatchback vehicles, make sure to operate both the front and rear washer modes.
While using the wiper/washer switch to activate the washer pump motor, measure the voltage between washer pump motor C137-2, circuit CRW23 (VT/GN), harness side and washer pump motor C137-1, circuit CRW14 (BU/WH), harness side.
Is the voltage greater than 10 volts?
Yes
INSTALL a new washer pump motor. REFER to Washer Pump Washer Pump. TEST the system for normal operation.
No
GO to G8.
G8 CHECK THE WASHER PUMP MOTOR CIRCUITS FOR AN OPEN OR HIGH RESISTANCE
- Ignition OFF.
- Disconnect: BCM (Body Control Module) C2280B.
- Measure the resistance between BCM (Body Control Module) C2280B-4, circuit CRW23 (VT/GN), harness side and washer pump motor C137-2, circuit CRW23 (VT/GN), harness side and between BCM (Body Control Module) C2280B-13, circuit CRW14 (BU/WH), harness side and washer pump motor C137-1, circuit CRW14 (BU/WH), harness side.
Are the resistances less than 5 ohms?
Yes
GO to G9.
No
REPAIR the affected circuit. TEST the system for normal operation.
G9 CHECK THE WASHER PUMP MOTOR CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: BCM (Body Control Module) C2280A.
- Measure the resistance between washer pump motor C137-1, circuit CRW14 (BU/WH), harness side and ground and between washer pump motor C137-2, circuit CRW23 (VT/GN), harness side and ground.
Are the resistances greater than 10,000 ohms?
Yes
GO to G10.
No
REPAIR the affected circuit. CLEAR the BCM (Body Control Module) DTCs. REPEAT the self-test. TEST the system for normal operation.
G10 CHECK FOR CORRECT BCM (Body Control Module) OPERATION
- Ignition OFF.
- Inspect the BCM (Body Control Module) connectors for the following conditions:
- corrosion
- damaged or pushed out pins
- Connect the BCM (Body Control Module) connectors and make sure they seat correctly.
- Connect: Wiper/Washer Switch C2081 (if previously disconnected).
- Connect: Windshield Wiper Motor C125 (if previously disconnected).
- Operate the system and verify if the concern is still present.
Is the concern still present?
Yes
INSTALL a new BCM (Body Control Module). TEST the system for normal operation.
No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.