Toyota Celica 2005, Repair Manual

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I01200
2 1
3
5
2
5
1
3
I01291
Tester Probe
Tin Foil
Heat Wire
I01292
At Center
− BODY ELECTRICAL DEFOGGER SYSTEM
BE − 59
2005 CELICA (RM1131U)
3. Connector connected:
INSPECT DEFOGGER SWITCH CIRCUIT
Connect the connector from the switch and inspect the wire har-
ness side connector from the back side as shown in the chart.
Tester connection Condition Specified condition
5 − Ground Ignition switch ON and defogger switch OFF Battery positive voltage
5 − Ground Ignition switch ON and defogger switch ON No voltage
If the circuit is not as specified, try replace the switch with a new
one.
If the circuit is not as specified, inspect the circuit connected to
other parts.
4. INSPECT DEFOGGER RELAY CONTINUITY
Condition Tester connection Specified condition
Constant 1 − 2 Continuity
Apply B+ between
terminals 1 and 2.
3 − 5 Continuity
If continuity is not as specified, replace the relay.
5. INSPECT DEFOGGER WIRE
NOTICE:
S
When cleaning the glass, use a soft, dry cloth, and
wipe the glass between the wires. Take care not to
damage the wires.
S
Do not use detergents or glass cleaners with abrasive
ingredients.
S
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.
Voltage Criteria
Approx. 5V Okay (No break in wire)
Approx. 10V or 0V Broken wire
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