2001 TOYOTA PRIUS Service Repair Manual

I01291
Tester Probe
Tin FoilHeat WIre
I01292
At Center
I01293
0 VoltsSeveral
Volts
Broken
Wire BE±50
± BODY ELECTRICALDEFOGGER SYSTEM
2001 PRIUS (RM778U)
4. INSPECT DEFOGGER WIRE
NOTICE:

When cleaning the glass, use a soft, dry cloth, and wipe the
glass in the direction of the wire. Take care not to damage
the wires.

Do not use detergents or glass cleaners with abrasive in-
gredients.

When measuring voltage, wind a piece of tin foil around the
top of the negative probe and press the foil against the wire
with your finger, as shown.
(a) Turn the ignition switch ON.
(b) Turn the defogger switch ON.
(c) Inspect the voltage at the center of each heat wire, as
shown.
VoltageCriteria
Approx. 5VOkay (No break in wire)
Approx. 10V or 0VBroken wire
HINT:
If there is approximately 10 V, the wire is broken between the
center of the wire and the positive (+) end. If there is no voltage,
the wire is broken between the center of the wire and ground.
(d) Place the voltmeter positive (+) lead against the defogger
positive (+) terminal.
(e) Place the voltmeter negative (±) lead with the foil strip
against the heat wire at the positive (+) terminal end and
slide it toward the negative (±) terminal end.
(f) The point where the voltmeter deflects from zero to sever-
al V is the place where the heat wire is broken.
HINT:
If the heat wire is not broken, the voltmeter indicates 0 V at the
positive (+) end of the heat wire but gradually increases to about
12 V as the meter probe is moved to the other end.

BE1V2±01
I17845
Power WIndow Master Switch
1 One touch power window does not move up and down.
After turning the ignition switch ON and power window master switch UP or DOWN on the drivers side, check
that the master switch AUTO light blinks.

Error is classified into the following 3 types according to the way of blinking.
UP or DOWNON
OFF
1 Limit switch error 3 Limit switch/Pulse sensor
synchronize error
1.5 secs.
2 secs.Repeat
1.5 secs.0.5 sec.
No Repeat 2 Pulse sensor error
Repeat
< Reference >
When the ignition switch is turned OFF after the AUTO light starts
blinking, the blinking will stop 43 sec. later.

When the ignition switch is turned ON after that, the AUTO light will
start blinking again.
0.5 secs.
Blinks in the 1 way
Remove the master switch.
(Connector connection condition)Master switch defective
Blinks in the 2 or 3 way
1 sec.
CONTINUED ON NEXT PAGECONTINUED ON NEXT PAGE
0.5 sec.0.5 sec. 0.5 sec.
2.5 secs. 4 secs. 4 secs.3.5secs.
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
BE±51
1718 Author: Date:
2001 PRIUS (RM778U)
POWER WINDOW CONTROL SYSTEM
TROUBLESHOOTING

Master switch defective
Does continuity exist between
connector terminals on the vehicle side?
Master switch side e Motor side
12 (PLS) terminal e 3 terminal
13 (LMT) terminal e 4 terminal
11 (SGNG) terminal e 5 terminal
Does continuity exist between 11, 12,
and 13 terminals on the master switch
side or 3, 4, and 5 terminals on the
motor side and body ground?
Connect the connector of power window motor.
Connect the normal master switch, do AUTO UP
and AUTO DOWN operations work?
Power window motor defective. Ye sNoWire harness defective (open)
Wire harness defective (short) Ye s
Ye s No
No CONTINUED FROM PREVIOUS PAGE
Open the fully closed window glass of
the driver 's door and check the change
of the voltage between terminal 13 and
11 of the master switch
Fully opened: 0 V
Fully closed: 10 ± 14 VDisconnect the connecters of master
switch and driver's power window motor. CONTINUED FROM PREVIOUS PAGE
OKNG BE±52
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
1719 Author: Date:
2001 PRIUS (RM778U)

When operating AUTO UP with the ignition
switch ON, is there a cause of
increasing friction resistance at
the inverse position?Disassemble the door and repair or
replace the applicable part.
Remove the power window regulator assembly.
Does the window operate smoothly
when moving the window up manually
after assembling?
Remove the power window motor from
the power window regulator assembly.
When operating the power window
regulator manually, does the regulator
move smoothly?
Are gears not damaged?
Does window motor rotate smoothly?
Reset the limit switch (See page BE±60).
Does the window move normally?
Master switch defective.Check and replace door glass run.
Power window regulator defective.
Power window motor defective.
Normal (Check the function) 2 During AUTO UP operation, the power window moves down.
Ye s
No
No
No
No
No Ye s
Ye s
Ye s
Ye s
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
BE±53
1720 Author: Date:
2001 PRIUS (RM778U)

3The DOWN function does not work though some other objects are caught in the power window glass.
Is the system in the jam protection
function operating condition?

The AUTO UP operation works with
the ignition switch ON. (One±touch operation)Normal (Perform function check)
Proceed to chart 1.
Normal
After performing operation check
repeatedly, conduct the function check. Does the AUTO UP or AUTO DOWN operation work
with the ignition switch ON?
Is the power window within the jam
protection function operating area?
< Out of the operating area >
Area around the fully closed position
Reset the limit switch (See page BE±60).
Does the power window operate normally?
Master switch defective.No
Ye s
Ye s
No No Ye s Ye s
No BE±54
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
1721 Author: Date:
2001 PRIUS (RM778U)