Wiper/Washer Relay Component Test
WARNING: This page is about a different car, the 2002 Mazda B4000, 2002 Mazda B3000, and 2002 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
Perform this test when directed to in the pinpoint tests.
- Measure resistance between terminal 2 and terminals 1, 3, 4 and 5. If resistance is 5 ohms or less between terminal 2 and any other terminal, replace the relay. If resistance is greater than 5 ohms, go to step 2.
- Use two jumper wires to connect terminals 1 and 3 directly to the positive battery terminal. Measure voltage at terminal 4. If there is no battery voltage, replace the relay. If there is battery voltage go to step 3.
- Connect a third jumper wire to terminal 2 and a known good ground. Measure voltage at terminal 5. If there is no battery voltage, replace the relay.