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Toyota Truck
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2000
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4 Runner Limited 2WD V6-3.4L (5VZ-FE)
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Repair and Diagnosis
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Heating and Air Conditioning
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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 main relay
is switched on by signals from the A/C control assembly. It supplies power to the blower motor.
Wiring Diagram:
Step 1:
Steps 2 - 3:
INSPECTION PROCEDURE