B3000 SE Regular Cab 4WD V6-3.0L OHV (1998)
Power Window Relay: Testing and Inspection
Power Window Relay
Perform this test when directed in the diagnostic pinpoint tests.
1. Measure resistance between terminal 2 and terminals 85, 86, 87, 87a and 30.If resistance is 5 ohms or less between terminal 85 and any other
terminal, replace the relay. If resistance is greater than 5 ohms, go to step 2.
2. Use two jumper wires to connect terminals 86 and 30 directly to the positive battery terminal. Measure voltage at pin 87a. If there is no battery
voltage, replace the relay. If there is battery voltage, go to step 3.
3. Connect a third jumper wire to pin 85 and a known good ground. Measure voltage at pin 87. If there is no battery voltage, replace the relay.
