Diagnosis And Testing - Sunroof Switch
WARNING: This page is about a different variant/trim than selected.
WARNING:
On vehicles equipped with the high voltage system, disconnecting the 12-volt battery negative cable alone will not power down the 12-volt system. You must perform the 12-volt Power Down procedure before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
- On vehicles equipped with the high voltage system, power down the 12 volt system. Refer to ELECTRIC VEHICLE CONTROL SYSTEM, STANDARD PROCEDURE .
- Disconnect the negative 12 volt battery cable.
- Remove the power sunroof switch from the headliner. Refer to SWITCH, SUNROOF, REMOVAL .
- Disconnect the sunroof wire harness connector from the sunroof switch connector receptacle.
- Using a multimeter, test the continuity between the terminals of the sunroof switch connector receptacle while actuating the switch as shown in the Sunroof Switch Tests chart
.
SUNROOF SWITCH TESTS SWITCH POSITION CONTINUITY BETWEEN PINS OFF NO CONTINUITY CLOSE 1 and 2 OPEN 1 and 3 SWITCH ILLUMINATION LED - SET MULTIMETER TO DIODE MODE - CONNECT PIN 4 TO PLUS (+), CONNECT PIN 1 TO MINUS (-) - LED SHOULD BARELY GLOW - If the switch fails any of the tests, replace the ineffective switch.