Parking Lamp Relay: Testing and Inspection

73 Digital Multimeter:

Special Tool(s)







TAIL Relay Terminal Location







Check Relay Continuity







Apply Power To Relay

1. Measure the resistance between relay terminal 86 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 86. Measure voltage at terminal 87A. If voltage is less than 10 volts, replace the relay. Otherwise, continue with the test.







Check Relay Operation


3. Use a jumper wire to apply ground to terminal 85. Measure the voltage at terminal 87. If the voltage is less than 10 volts, replace the relay. Otherwise, return to the pinpoint tests.