5. FUEL INJECTION SYSTEM MXU 500EXi/MXU500i TILT SWITCH(ROLL SENSOR) INSPECTION Support the ATV level surface. Turn the ignition switch to "OFF" Remove the screws, washers and tilt switch. Do not disconnect the tilt switch connector during inspection. Place the tilt switch vertical as shown, and turn the ignition switch to "ON". Measure the voltage between the following terminals of the tilt switch connector with the connector connected. Terminal Normal 5 V (ECU V/R (+) -G(-) voltage) B/W (+) G(-) 0.41.4 V Incline the tilt switch 6510 degrees to the left or right with the ignition switch turned to "ON". Measure the voltage between the following terminals of the tilt switch connector with the connector connected. Terminal Normal 5 V (ECU V/R (+) G (-) voltage) B/W (+) G(-) 3.74.4 V Roll Sensor If repeat this test, first turn the ignition switch to "OFF", then turn the ignition switch to "ON". REMOVAL/INSTALLATION Disconnect the connector and remove two screws. Remove the Tilt switch. Installation is in the reverse order of removal. Install the tilt switch with its "UP" mark facing up. Tighten the mounting screws securely. 5-19