Preliminary Checks

Confirm concern. Ensure battery is fully charged. Ensure window in question is properly aligned. Check the following for possible cause of malfunction:

• Damaged guide or regulator mechanism.
• Malfunctioning window motor. See POWER WINDOW MOTOR  under COMPONENT TESTING.
• Malfunctioning switch. See MASTER SWITCH  and/or SINGLE SWITCH under COMPONENT TESTING.
• Open or shorted circuit.