power windows columbia basin college automotive technology
TRANSCRIPT
POWER WINDOWSPOWER WINDOWS
COLUMBIA BASIN COLLEGECOLUMBIA BASIN COLLEGE
Automotive TechnologyAutomotive Technology
COMPONENTSCOMPONENTS
Master SwitchMaster Switch Individual SwitchIndividual Switch Drive MotorsDrive Motors Rack and Pinion Flexible StripRack and Pinion Flexible Strip Safety SwitchSafety Switch Window RegulatorWindow Regulator
SATURN POWER WINDOWSATURN POWER WINDOW
NORMALLY OPEN SWITCHNORMALLY OPEN SWITCH
Powered separately Powered separately by circuit breakerby circuit breaker
Normally used with Normally used with two field coil motortwo field coil motor
Motor is groundedMotor is grounded Tested with Jumper Tested with Jumper
wires or test lightwires or test light
NORMALLY CLOSED NORMALLY CLOSED SWITCHSWITCH
Commonly used in Commonly used in most carsmost cars
Used with insulated Used with insulated system. system.
Receives separate Receives separate power from ignitionpower from ignition
Use jumper wires to Use jumper wires to test systemtest system
Lab 356 and 357
MASTER CONTROL SWITCHMASTER CONTROL SWITCH
On Driver’s DoorOn Driver’s Door System grounded through Master System grounded through Master
Switch if PM MotorSwitch if PM Motor Safety LockSafety Lock Ignition must be on.Ignition must be on. Must use Continuity Chart to TestMust use Continuity Chart to Test
Page 354C and 356C
WINDOW MOTOR CIRCUITWINDOW MOTOR CIRCUIT
DRIVE MOTORSDRIVE MOTORS
Permanent MagnetPermanent Magnet– most are insulatedmost are insulated
Two Field Winding Two Field Winding MotorMotor– opposite windingsopposite windings– motor is grounded motor is grounded
TAPE DRIVETAPE DRIVE– Cable DriveCable Drive
Page 353C
DIRECT DRIVE MOTOR DIRECT DRIVE MOTOR Page 354C
WINDOW REGULATORWINDOW REGULATORAssist Up SpringAssist Up Spring
Less Amps Less Amps used to used to raise raise windowwindow
Dangerous Dangerous when when servicing!servicing!
WIRING CIRCUITSWIRING CIRCUITSPage 356C
ONE TOUCH SYSTEMONE TOUCH SYSTEM
Most makers use this systemMost makers use this system Electronically controlled by “Power Electronically controlled by “Power
Window Control Module”Window Control Module” Less than .3 sec, window travels all the Less than .3 sec, window travels all the
way downway down More than .3 sec, window only travels More than .3 sec, window only travels
until you let off switchuntil you let off switch
Page 359 Classroom
DIAGNOSE IT RIGHT THE DIAGNOSE IT RIGHT THE FIRST TIMEFIRST TIME
Think about the Think about the circuit you are circuit you are diagnosing.diagnosing.
Get a plan of action Get a plan of action through reasoningthrough reasoning
Use the Schematic Use the Schematic of the Systemof the System
DIAGNOSISDIAGNOSIS
Broken Wire in JambBroken Wire in Jamb Sluggish OperationSluggish Operation Excessive Voltage DropExcessive Voltage Drop Jumper LeadsJumper Leads Binding LinkageBinding Linkage Lubrication is Important!Lubrication is Important!
Check Switch OperationCheck Switch OperationPg 406 Lab
Check for Power at MotorCheck for Power at Motor
Component ReplacementComponent Replacement
Safety First!!Safety First!! CleanlinessCleanliness Make sure diagnosis is correct. Make sure diagnosis is correct. Verify diagnosis before motor replaceVerify diagnosis before motor replace Verify Repair (Is problem taken care Verify Repair (Is problem taken care
of?)of?)
DEMONSTRATIONDEMONSTRATION
SHOP EXERCISESHOP EXERCISE Find a Power Window equipped vehicle.Find a Power Window equipped vehicle. Get a Power Window Schematic for the Get a Power Window Schematic for the
car you are working on.car you are working on. Verify type of system you are working Verify type of system you are working
on. (Identify switch type and terminals)on. (Identify switch type and terminals) Perform Switch test with jumper wires Perform Switch test with jumper wires
as applicable. (See Page 405 & 406 in as applicable. (See Page 405 & 406 in Lab manual for a guide.)Lab manual for a guide.)