Test 4: Lock-Out Function Inoperative

Disconnect master switch assembly connector. Using a test light connected to ground, backprobe master switch assembly connector Dark Blue wire terminal. If test light does not illuminate, replace master switch assembly. See WINDOW SWITCH  under REMOVAL & INSTALLATION. Recheck system operation. If test light illuminates, repair short to power in Dark Blue wire between master switch assembly connector and window switches. See WIRING DIAGRAMS  . Recheck system operation.