Power Sunroof Inoperative

POWER SUNROOF INOPERATIVE

TEST DESCRIPTION

Step 1:

Steps 2 - 5:

Steps 6 - 10:

Steps 11 - 12:

Steps 13 - 14:

Steps 15 - 19:

Steps 20 - 26:

Steps 27 - 31:

Steps 32 - 37:

Steps 38 - 45:

The numbers below refer to the step numbers on the diagnostic table.
5. Using a jumper wire to simulate operation of the sunroof to determine if the switch is at fault.
13. Disconnecting the sunroof limit switch/sunroof opening position switch harness connector and shorting the sunroof limit switch position 1-LS1 circuit, the sunroof module thinks the glass is in the closed position, allowing any request from the sunroof switch to enable an output to the sunroof motor/actuator for testing.
14. When the sunroof control module is at rest the sunroof motor/actuator open and close circuits are at ground potential. This step is testing for an output to drive the motor, when the sunroof control module should be idle.