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Terminals Of Ecu

WARNING: This page is about a different car, the 2008 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY 
    Fig 1: Identifying Air Conditioning Amplifier Assembly ECU Connector Terminals
    G05274308Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance of each terminal of the connectors.
      CONNECTOR TERMINAL VOLTAGE SPECIFICATION

      Symbols (Terminal No) Wire Color Terminal Description Condition Specified Condition
      A8-8 (FDEF) - A8-6 (GND) B - W-B Front Deicer Signal Engine switch on (IG)
      Front deicer switch ON      		 Below 1 V
      A8-8 (FDEF) - A8-6 (GND) B - W-B Front Deicer Signal Engine switch on (IG)
      Front deicer switch OFF      		 10 to 14 V
      A8-19 (DFG) - A8-6 (GND) G - W-B Rear Defogger Signal Engine switch on (IG)
      Rear defogger switch OFF      		 10 to 14 V
      A8-19 (DFG) - A8-6 (GND) G - W-B Rear Defogger Signal Engine switch on (IG)
      Rear defogger switch ON      		 Below 1 V
      A8-6 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
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