B1460: Wiper Washer Pump Motor Relay Coil Circuit Short To Battery

Definition

The OBD2 code B1460 indicates a short circuit in the wiper washer pump motor relay coil circuit, meaning the circuit is receiving power directly from the battery instead of being controlled by the relay, which can lead to malfunctioning of the washer pump

Common causes

Shorted wiring or connectors
Faulty wiper washer pump motor relay
Damaged or corroded relay socket
Malfunctioning wiper washer pump
Grounding issues
Electrical shorts in the harness
Faulty body control module (BCM)

Common misdiagnoses

Faulty wiper washer pump
Defective wiper switch
Damaged wiring or connectors
Malfunctioning body control module (BCM)
Short circuit in the wiring harness
Incorrectly installed or faulty relay

Troubleshooting steps

1. Visual Inspection
2. Check the wiring and connectors related to the wiper washer pump motor relay. Look for any signs of damage, fraying, or corrosion
3. Inspect the relay itself for any physical damage or signs of overheating
4. Check the Relay
5. Test the wiper washer pump motor relay by swapping it with a similar relay in the fuse box (if applicable) to see if the problem persists
6. If you have a multimeter, you can also test the relay for continuity and proper operation
7. Inspect the Wiper Washer Pump
8. Ensure that the wiper washer pump is functioning correctly. If the pump is shorted internally, it could cause the relay circuit to show a short to battery
9. Disconnect the pump and check for continuity between the terminals. If there is continuity when the pump is not activated, it may be faulty
10. Check for Short Circuits
11. Use a multimeter to check for shorts in the wiring harness leading to the relay and the washer pump. Look for any wires that may be pinched, frayed, or touching the vehicle's chassis
12. Inspect the ground connections to ensure they are secure and free of corrosion
13. Test the Circuit
14. With the relay removed, check the voltage at the relay socket with the ignition on. You should see battery voltage at the appropriate terminals
15. If there is no voltage, trace the wiring back to the source to identify any breaks or issues
16. Check the Fuse
17. Inspect the fuse associated with the wiper washer pump circuit. If the fuse is blown, replace it and see if the issue persists. A blown fuse may indicate a short circuit elsewhere in the system
18. Scan for Additional Codes
19. Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues
20. Consult Wiring Diagrams
21. Refer to the vehicle’s service manual for wiring diagrams to understand the circuit better and identify any other components that may be involved
22. Professional Diagnosis
23. If the issue persists after performing these steps, consider seeking help from a professional mechanic or technician who can perform more advanced diagnostics. By following these steps, you should be able to identify and resolve the issue related to the B1460 code

Definition

Common causes

Common misdiagnoses

Troubleshooting steps

1. Visual Inspection

2. Check the wiring and connectors related to the wiper washer pump motor relay. Look for any signs of damage, fraying, or corrosion

3. Inspect the relay itself for any physical damage or signs of overheating

4. Check the Relay

5. Test the wiper washer pump motor relay by swapping it with a similar relay in the fuse box (if applicable) to see if the problem persists

6. If you have a multimeter, you can also test the relay for continuity and proper operation

7. Inspect the Wiper Washer Pump

8. Ensure that the wiper washer pump is functioning correctly. If the pump is shorted internally, it could cause the relay circuit to show a short to battery

9. Disconnect the pump and check for continuity between the terminals. If there is continuity when the pump is not activated, it may be faulty

10. Check for Short Circuits

11. Use a multimeter to check for shorts in the wiring harness leading to the relay and the washer pump. Look for any wires that may be pinched, frayed, or touching the vehicle's chassis

12. Inspect the ground connections to ensure they are secure and free of corrosion

13. Test the Circuit

14. With the relay removed, check the voltage at the relay socket with the ignition on. You should see battery voltage at the appropriate terminals

15. If there is no voltage, trace the wiring back to the source to identify any breaks or issues

16. Check the Fuse

17. Inspect the fuse associated with the wiper washer pump circuit. If the fuse is blown, replace it and see if the issue persists. A blown fuse may indicate a short circuit elsewhere in the system

18. Scan for Additional Codes

19. Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues

20. Consult Wiring Diagrams

21. Refer to the vehicle’s service manual for wiring diagrams to understand the circuit better and identify any other components that may be involved

22. Professional Diagnosis

23. If the issue persists after performing these steps, consider seeking help from a professional mechanic or technician who can perform more advanced diagnostics. By following these steps, you should be able to identify and resolve the issue related to the B1460 code