AC9: Check Wire Between Bulb Check Relay & Diode Junction Box

With the ignition key in the OFF position, remove the instrument cluster and the bulb check relay. Disconnect the top black diode strip at the diode junction box located behind the instrument cluster. Measure the resistance of the Blue/Yellow wire between the bulb check relay connector and terminal No. 6 of the diode junction box connector. See WIRING DIAGRAMS  . Is the resistance less than 5 ohms? If yes, go to the next step. If no, service the Blue/Yellow wire.