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Home >> Lexus >> 1993 >> SC 300 L6-3.0L (2JZ-GE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Component Tests and General Diagnostics >> Heater Main Relay Circuit

Heater Main Relay Circuit



Circuit Description
The heater main relay is switched on by signals from the air conditioning control assembly. It supplies power to the blower motor.

Diagnostic Chart:





Wiring Diagram:





Inspection Procedure

Step 1:





Step 2:





Step 3:




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