Operation CHARM
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2005
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IS 300 L6-3.0L (2JZ-GE)
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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
Heater Main Relay Circuit
CIRCUIT DESCRIPTION
The heater main relay is switched on by signals from the A/C amplifier. It supplies power to the
blower motor
.
Wiring Diagram:
Step 1:
Step 2 - 3:
INSPECTION PROCEDURE