Power Sunroof Inoperative

TEST DESCRIPTION

Steps 1-4:

Steps 5-12:

Steps 13-21:

Steps 22-33:

Steps 34-45:

5. Using a jumper wire to simulate operation of the sunroof to determine if the switch is at fault.
13. Disconnecting the Position Encoding System (PES) module and shorting the limit switch 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 actuator/motor for testing.
14. When the sunroof module is at rest the sunroof motor open and close circuits are at ground potential. This step is testing for an output to drive the motor, when the sunroof module should be idle.