Navigator 4WD V8-5.4L SOHC VIN L (1998)
Horn Relay: Testing and Inspection
1. Measure the resistance between relay terminal 85 and all other terminals. If any resistance is 5 ohms or less, replace the relay. Otherwise, continue
with the test.
2. Use jumper wires to apply battery voltage to terminals 30 and 85. Measure voltage at terminal 87A. If voltage is less than 10 volts, replace the
relay. Otherwise, continue with the test.
3. Use a jumper wire to apply ground to terminal 86. Measure the voltage at terminal 87. If the voltage is less than 10 volts, replace the relay.
Otherwise, return to the pinpoint tests.
