Pull down the rear headliner then disconnect the wire connector from the sunroof controller.
Insert a probe of test lamp to switch harness side connector terminal No.6 and ground the other probe with ignition switch ON.
OK : Test lamp "ON"
Insert a probe of test lamp to switch harness side connector No.4 and ground the other probe.
OK : Test lamp "ON"
Apply the battery voltage to the switch harness side connector terminal No.1.
OK : Test lamp "ON"
After inspection of wiring harness, if sunroof controller is not operate normally, replace the sunroof controller.