Escort L4-122 2.0L SOHC VIN P SFI (1999)
Heated Glass Element Relay: Testing and Inspection
Component Tests
MINI ISO RELAY
Use 73 Digital Multimeter to check for the continuity between terminal 85 and all other terminals. If the resistance is 5 ohms or less between
terminal 85 and any other terminal, replace the relay. If resistance is greater than 5 ohms, continue with the test. Use two jumper wires to connect
relay terminals 86 and 30 directly to the positive battery terminal. Use 73 Digital Multimeter set into the volts position to check for voltage at
terminal 87A. If battery voltage is not indicated, replace the relay. If battery voltage is indicated, connect a third jumper wire to terminal 85 and
ground the jumper wire to a known good ground. Check for voltage at terminal 87. If battery voltage is not indicated, replace the relay.
MICRO ISO RELAY
Use 73 Digital Multimeter to check for continuity between terminal 2 and all other terminals. If resistance is 5 ohms or less between terminal 2
and any other terminal, replace the relay. If resistance is greater than 5 ohms, continue with the test. Use 73 Digital Multimeter set in the volts
position to check for voltage at terminal 4. If battery voltage is not indicated, replace the relay. If battery voltage is indicated, connect a third
jumper wire to terminal 2 and ground the jumper wire to a known good ground. Check for voltage at terminal 5. If battery voltage is not indicated,
replace the relay.
