Pinpoint Test G: The Washer Pump Is Inoperative - Front/Rear
- G1 CHECK THE BCM 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.
- Monitor the BCM 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?
NOTE: The rear window washer feature is only available on 5-door hatchback vehicles. - G2 CHECK THE WIPER/WASHER SWITCH
- Ignition OFF.
- Disconnect: Wiper/Washer Switch C2081.
- Carry out the wiper/washer switch component test.
Refer to OEM WIRING DIAGRAMS COMPONENT TESTING for component testing.
- Does the wiper/washer switch pass the component test?
- Yes : GO to G3.
- No : INSTALL a new wiper/washer switch. REFER to STEERING COLUMN SWITCHES . 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?
- 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 OEM WIRING DIAGRAMS article to identify the possible causes of the short to ground.
- G5 CHECK THE WIPER/WASHER SWITCH WASHER PUMP MOTOR REQUEST CIRCUITS TO THE BCM FOR AN OPEN OR HIGH RESISTANCE
- Ignition OFF.
- Disconnect: BCM C2280B.
- Measure the resistance between wiper/washer switch C2081-2, circuit CRW07 (GY/BN), harness side and BCM C2280B-12, circuit CRW07 (GY/BN), harness side and between wiper/washer switch C2081-7, circuit CRW12 (GY/OG), harness side and BCM 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 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 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.
- 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?
NOTE: On 5-door hatchback vehicles, make sure to operate both the front and rear washer modes.Fig 5: Measuring Voltage Between Washer Pump Motor C137-2, Circuit CRW23 (VT/GN) And Washer Pump Motor C137-1, Circuit CRW14 (BU/WH)Courtesy of FORD MOTOR CO.
- Yes : INSTALL a new washer pump motor. REFER to 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 C2280B.
- Measure the resistance between BCM C2280B-4, circuit CRW23 (VT/GN), harness side and washer pump motor C137-2, circuit CRW23 (VT/GN), harness side and between BCM 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 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 DTCs. REPEAT the self-test. TEST the system for normal operation.
- G10 CHECK FOR CORRECT BCM OPERATION
- Ignition OFF.
- Inspect the BCM connectors for the following conditions:
- corrosion
- damaged or pushed out pins
- Connect the BCM 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. REFER to MULTIFUNCTION ELECTRONIC MODULES . 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.