Diagnosis And Testing - Sunroof: Notes

Refer to the for possible causes. Refer to SUNROOF DIAGNOSIS TABLE . Before beginning sunroof diagnostics verify that all other power accessories are in proper operating condition. If not, a common electrical problem may exist.

If the glass panel does not fully move to the desired position the sunroof module may need to be initialized. To initialize the motor, connect power to the sunroof and press the vent-button until the glass panel has reached the full-vent position. Once in full vent hold the vent button for 15 seconds. The mechanism will make a click. This is the indication that the sunroof module is initialized

SUNROOF DIAGNOSIS TABLE

SYMPTOM	POSSIBLE CAUSE
Sunroof motor inoperative.	Faulty control switch.
	Faulty circuit ground between sunroof module, control switch, and body harness.
	Faulty power circuit between sunroof module, control switch, and body harness.
	Faulty sunroof drive motor.
	Faulty sunroof module.
Audible whine when switch is depressed, sunroof does not operate.	Faulty sunroof drive motor.
	Binding cable.
Audible clicking or ratcheting when switch is pressed, sunroof does not operate.	Broken or worn drive cable.
	Worn drive motor gear.
	Mechanisms not synchronized.
Sunroof vents and opens, but does not close.	Faulty circuit.
	Faulty control switch.
	Faulty drive motor.
Sunroof vents, but does not open.	Binding cable or mechanism.
	Faulty circuit.
	Faulty switch.
	Faulty sunroof module.
	Faulty drive motor. (Initialize the motor).
Sunroof does not vent	Binding cable or mechanism.
	Faulty circuit.
	Faulty control switch.
	Faulty sunroof module.
	Faulty drive motor. (Initialize the motor).
Sunroof water leak.	Drain tubes clogged or kinked or disconnected from the sunroof.
	Glass panel improperly adjusted.
	Faulty glass panel seal.
Gurgling sound from sunroof	Low spot in drain hose routing, allowing water to stand.
Wind noise from sunroof.	Glass panel compression to the roof opening not consistent.
	Wind deflector not deploying properly.
	Glass not installed or adjusted properly.
	Faulty glass panel seal.
Buzz, Squeak, Rattles from sunroof	Loose or broken attaching hardware.
	No lubrication in track.
	Worn or broken mechanism.
	Cables bunched or kinked.
Sunshade will not function or does not operate smoothly	Sunshade feet out of track.
Sunshade will not function or does not operate smoothly	Track obstructions or interference.
Glass movement not consistent or glass does not operate smoothly	Obstruction in track.
	Cables and Guide alignment.
	Faulty drive motor. (Initialize the motor).