Diagnostic Procedure

STEP	INSPECTION		ACTION
1	INSPECT MALFUNCTION SYMPTOM Does the malfunction symptom occur only under the following special conditions?: Driving over railroad tracks Driving on bumpy roads. Opening/closing the door.	Yes	The system is normal (Explain to the customer that this does not indicate a malfunction because the system is designed to reverse the door glass while it is closing if it receives vibration when the vehicle is crossing railroad tracks, driving on a bumpy road, or when the door is opened/closed.)
1		No	Go to the next step.
2	INSPECT ACRYLIC DOOR VISOR INSTALLATION CONDITION Is the acrylic door visor normal?	Yes	Go to the next step.
2		No	Install the side visor properly, then go to the next step.
3	INSPECT DOOR GLASS CLOSING SPEED Affix tape to the rear edge of the door glass as shown in the figure for placing marks (to facilitate seeing the door glass movement) Start the engine and idle it (to ensure a stabilized operational voltage). Does the door glass hesitate only once while its closing?	Yes	Mark the point where the door glass closing speed changed, then go to Step 5.
3		No	Go to the next step.
4	REINSPECT DOOR GLASS CLOSING SPEED Does the door glass hesitate periodically (5-6 times) while it is closing?	Yes	Replace the power window motor, then go to Step 8 (See POWER WINDOW MOTOR REMOVAL/INSTALLATION .)
4		No	Go to Step 8.
5	INSPECT GLASS RUN CHANNEL AND DOOR GLASS SLIDING SURFACE Is there an object caught between the glass run channel and the door glass, or is there roughness on the sliding surface (rubber surface)?	Yes	Object is caught between glass run channel and door glass: Remove the object. Roughness on the sliding surface (rubber surface): Replace the glass run channel. After performing one of the above actions, reinspect. If the malfunction is not corrected, go to Step 3.
5		No	Go to the next step.
6	INSPECT TIGHTENING OF DOOR GLASS TO CARRIER PLATE Is it normal?	Yes	Go to the next step.
6		No	After tightening correctly, reinspect. If the malfunction is not corrected, go to Step 3.
7	INSPECT CONDITION OF GLASS RUN CHANNEL AND DOOR GLASS Is it normal?	Yes	Go to the next step.
7		No	Assemble the glass run channel and door glass securely, and reinspect. If the malfunction is not corrected, go to Step 3.
8	INSPECT DOOR GLASS CLOSING SPEED Does the door glass hesitate at any location?	Yes	Repeat the inspection from Step 3.
8		No	Troubleshooting completed.

Fig 1: Identifying Tape On Rear Edge of Door Glass

Fig 2: Inspecting Power Window System