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Toyota Truck
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2002
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Highlander 4WD V6-3.0L (1MZ-FE)
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Repair and Diagnosis
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Heating and Air Conditioning
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Testing and Inspection
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Component Tests and General Diagnostics
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Heater Main Relay Circuit
Heater Main Relay Circuit
CIRCUIT DESCRIPTION
The
heater relay
is switched on by signals from the
A/C amplifier
assy. It supplies power to the
blower motor
.
Wiring Diagram:
Step 1 - 3:
Step 4:
INSPECTION PROCEDURE