AC4: Check Wire Between Instrument Cluster & Bulb Check Relay For Open
With the ignition key in the OFF position, remove the instrument cluster. Disconnect the instrument cluster connector C1. Remove the bulb check relay. Measure the resistance of the Yellow/Purple wire between the bulb check relay connector and terminal No. 16 of the instrument cluster connector C1. See WIRING DIAGRAMS . Is the resistance less than 5 ohms? If yes, go to the next step. If no, service the Yellow/Purple wire.