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

The ODBII 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.

The severity of ODBII code B1460 is moderate.

Common Causes For: B1459 Wiper Washer Pump Motor Relay Coil Circuit Open

• 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 misdiagnosis for B1460 Wiper Washer Pump Motor Relay Coil Circuit Short To Battery

• 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

Common Troubleshooting Steps

When dealing with OBD-II code B1460, which indicates a “Wiper Washer Pump Motor Relay Coil Circuit Short To Battery,” you can follow these common troubleshooting steps:

• Visual Inspection:
• Check the wiring and connectors related to the wiper washer pump motor relay. Look for any signs of damage, fraying, or corrosion.
• Inspect the relay itself for any physical damage or signs of overheating.
• Check the Relay:
• 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.
• If you have a multimeter, you can also test the relay for continuity and proper operation.
• Inspect the Wiper Washer Pump:
• 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.
• Disconnect the pump and check for continuity between the terminals. If there is continuity when the pump is not activated, it may be faulty.
• Check for Short Circuits:
• 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.
• Inspect the ground connections to ensure they are secure and free of corrosion.
• Test the Circuit:
• With the relay removed, check the voltage at the relay socket with the ignition on. You should see battery voltage at the appropriate terminals.
• If there is no voltage, trace the wiring back to the source to identify any breaks or issues.
• Check the Fuse:
• 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.
• Scan for Additional Codes:
• Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues.
• Consult Wiring Diagrams:
• Refer to the vehicle’s service manual for wiring diagrams to understand the circuit better and identify any other components that may be involved.
• Professional Diagnosis:
• 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.