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HOMESERVICE MANUALSSCION2008XD AUTOMATICREPAIR AND DIAGNOSISBODY & FRAMEWINDOWSWINDSHIELD/WINDOWGLASSWINDOW DEFOGGER SYSTEMTERMINALS OF ECU
2008 Scion xD Automatic

Terminals Of Ecu

2008 Scion xD AutomaticSECTION Terminals Of Ecu
  1. CHECK HEATER CONTROL 
    Fig 1: Identifying ECU Connector Terminals
    G05403105Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance according to the value(s) in the table below.

      Standard voltage: 

      STANDARD VOLTAGE SPECIFICATIONS

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      G6-2 (RDEF) - G6-1 (E) B - W-B Rear defogger signal Ignition switch ON, Rear defogger switch OFF 11 to 14 V
      Ignition switch ON, Rear defogger switch ON Below 1 V
      G6-3 (IG+) - G6-1 (E) P - W-B Power source Ignition switch ON 11 to 14 V
      Ignition switch OFF Below 1 V

      Standard resistance: 

      STANDARD RESISTANCE SPECIFICATIONS

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      G6-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction in the wire harness.

  2. CHECK MAIN BODY ECU 
    Fig 2: Identifying Main Body ECU Connector Terminals
    G05403106Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage according to the value(s) in the table below.

      Standard voltage: 

      STANDARD VOLTAGE SPECIFICATIONS

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      4G-1 - Body ground B - Body ground Power source Always 11 to 14 V
      4Q-12 - Body ground B - Body ground DEF relay operation signal Ignition switch ON, Rear defogger switch OFF 11 to 14 V
      Ignition switch ON, Rear defogger switch ON Below 1 V
      4F-2 - Body ground B - Body ground Defogger wire operation signal Ignition switch ON, Rear defogger switch OFF Below 1 V
      Ignition switch ON, Rear defogger switch ON 11 to 14 V

      If the result is not as specified, there may be a malfunction in the wire harness or main body ECU.

RENDER: 1.0x

NO RELATED

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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.