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Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 234 (Tire And Wheel) >> Tire Pressure Warning System >> Terminals Of Ecu

Terminals Of Ecu

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HINT:

Inspect the connectors from the back side while the connectors are connected.

Fig 1: Identifying Terminals Of ECU
G05584907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CONNECTOR TERMINAL WIRING COLOR REFERENCE

Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
E56-2 (SPD) - E56-9 (GND) V - W-B Vehicle speed signal Vehicle is running Pulse generation (see  1waveform 1)
E56-3 (TC) - E56-9 (GND) G - W-B TC terminal When terminal TC is not connected 8 to 15 V
E56-4 (TACH) - E56-9 (GND) GR - W-B Engine speed signal Engine is running Pulse generation (see  2waveform 2)
E56-5 (IND) - E56-9 (GND) P - W-B Tire pressure warning light signal After ignition switch is turned ON, when tire pressure warning light illuminates for 3 seconds 0.9 to 3.2 V
  • Ignition switch ON
  • Tire pressure warning light off
 3.2 V or higher
E56-6 (RF5V) - E56-9 (GND) R - W-B Tire pressure warning antenna and receiver power source Ignition switch ON 4.5 to 5.5 V
E56-7 (IG) - E56-9 (GND) L - W-B IG power source Ignition switch ON 10 to 16 V
E56-9 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
E56-10 (SIL) - E56-9 (GND) W - W-B Diagnostic communication terminal
  • Ignition switch ON
  • Techstream is connected to DLC3
 Pulse generation (see  3waveform 3)
E56-11 (GND2) - E56-9 (GND) Y - W-B Tire pressure warning antenna and receiver ground Always Below 1 Ω
E56-12 (RDA) - E56-9 (GND) G - W-B Tire pressure warning antenna and receiver signal
  • Ignition switch ON
  • The tire pressure warning antenna and receiver is not connected
 9 to 16 V
  1. Waveform 1 (Reference) 
    1. Waveform
      WAVEFORM REFERENCE

      Item Contents
      Terminal SPD - GND
      Tool setting 5 V/DIV, 200 ms/DIV.
      Vehicle condition While driving at approximately 20 km/h (12 mph).
      Fig 2: Waveform Graph (1)
      G04966584Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Waveform 2 (Reference) 
    1. Waveform
      WAVEFORM REFERENCE

      Item Contents
      Terminal TACH - GND
      Tool setting 5 V/DIV, 10 ms/DIV.
      Vehicle condition Idling

      HINT:

      The wavelength becomes shorter as the engine speed increases.

      Fig 3: Waveform Graph (2)
      G04966584Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Waveform 3 (Reference) 
    1. Waveform
      WAVEFORM REFERENCE

      Item Contents
      Terminal SIL - Body ground
      Tool setting 5 V/DIV., 1 ms/DIV.
      Vehicle condition Communicating using Techstream
      Fig 4: Waveform Graph (3)
      G04977832Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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