2007 Lexus ES 350FACTORY OEM SERVICE PROCEDURE

Terminals Of Ecu

  1. CHECK A/C AMPLIFIER ASSEMBLY 
    Fig 1: Identifying A/C Amplifier Assembly Connector Terminals
    G05253663Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance of each terminal of the connectors.

      Standard voltage 

      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      RDFG (E1-38) - GND (E1-14) G-W-B Rear Defogger Signal Engine switch on (IG), Rear defogger switch OFF 10 to 14 V

      Standard resistance 

      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (E1-14) - Body ground W-B - Body ground Ground Always Below 1 Ω
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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