11B Radiator Fan Relay Control Circuit

1. Turn ignition switch off, then disconnect logic module white electrical connector.
2. Connect a voltmeter between logic module white electrical connector terminal No. 21 and ground, then turn ignition switch to the Run position.
3. If voltmeter reading is within one volt of battery voltage, replace logic module.
CAUTION: Before replacing the logic module make sure the terminal in cavity No. 21 is not crushed so that it cannot touch the logic module pin.
4. If voltmeter reading is not within 1 volt of battery voltage, locate and repair open in wire from terminal No. 21 of logic module white electrical connector to radiator fan relay.