POWER WINDOWS

COMPONENTS n Master Switch n Individual Switch n Drive Motors n Rack and Pinion Flexible Strip n Safety Switch n Window Regulator

NORMALLY OPEN SWITCH

NORMALLY CLOSED SWITCH

DRIVE MOTORS n Permanent Magnet n Two Field Winding Motor n TAPE DRIVE –Cable Drive

DIRECT DRIVE MOTOR

WINDOW REGULATOR Assist Up Spring

WIRING CIRCUITS

DIAGNOSE IT RIGHT THE FIRST TIME n Think about the circuit you are diagnosing. n Get a plan of action through reasoning n Use the Schematic of the System

DIAGNOSIS n Broken Wire in Jamb n Sluggish Operation n Excessive Voltage Drop n Jumper Leads n Binding Linkage

Check Switch Operation

Check for Power at Motor

Component Replacement n Safety First!! n Cleanliness n Make sure diagnosis is correct. n Verify diagnosis before motor replace n Verify Repair (Is problem taken care of?)

DEMONSTRATION

SHOP EXERCISE