Z2: Check Door Ajar Warning Indicator Circuit

With the ignition key in the OFF position, close all doors. Measure the voltage on the Blue wire at terminal No. 11 of the instrument cluster connector C2. See WIRING DIAGRAMS  . Is the voltage greater than 10 volts with all the doors closed, and less than 1 volt with one door open? If yes, replace the instrument cluster. If no, go to the next step.