GLASS HATCH OPENER SYSTEM TERMINALS OF ECU


  1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    A01DMMGE06

    1. Remove the main body ECU (multiplex network body ECU) Click here.

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A-30 (BECU) - Body ground - Auxiliary battery power supply Ignition switch off 11 to 14 V
      A-31 (ALTB) - Body ground - Auxiliary battery power supply Ignition switch off 11 to 14 V
      A-32 (IG) - Body ground - Ignition switch power supply Ignition switch ON 11 to 14 V
      A-32 (IG) - Body ground - Ignition switch power supply Ignition switch off Below 1 V
      A-29 (ACC) - Body ground - ACC power supply Ignition switch ACC 11 to 14 V
      A-29 (ACC) - Body ground - ACC power supply Ignition switch off Below 1 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω
      G63-3 (GND2) - 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.

    3. Install the main body ECU (multiplex network body ECU).

    4. Measure the voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G63-17 (GOSW) - Body ground LG - Body ground Glass hatch opener switch input Glass hatch open Below 1 V
      G63-17 (GOSW) - Body ground LG - Body ground Glass hatch opener switch input Ignition switch off, all doors closed and glass hatch closed Pulse generation (See waveform 1 or 2)
      2I-9 (GHRY) - Body ground*1 B - Body ground Glass hatch opener relay output Ignition switch ON, glass hatch opener switch off Below 1 V
      2I-9 (GHRY) - Body ground*1 B - Body ground Glass hatch opener relay output Ignition switch ON, glass hatch opener switch on 11 to 14 V
      2H-9 (GHRY) - Body ground*2 B - Body ground Glass hatch opener relay output Ignition switch ON, glass hatch opener switch off Below 1 V
      2H-9 (GHRY) - Body ground*2 B - Body ground Glass hatch opener relay output Ignition switch ON, glass hatch opener switch on 11 to 14 V

      • *1: for LHD

      • *2: for RHD

      If the result is not as specified, the main body ECU (multiplex network body ECU) or driver side junction block assembly may have a malfunction.

    5. A01DS10E01

      Using an oscilloscope, check waveform 1.

      Waveform 1 (Reference)
      Item Content
      Terminal No. (Symbol) G63-17 (GOSW) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Glass hatch closed
    6. A01DSUNE01

      Using an oscilloscope, check waveform 2.

      Waveform 2 (Reference)
      Item Content
      Terminal No. (Symbol) G63-17 (GOSW) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Ignition switch off, all doors closed and glass hatch closed