GLASS HATCH OPENER SYSTEM TERMINALS OF ECU


  1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    A0028JSC01
    *A Main Body ECU (Multiplex Network Body ECU) with 3 Connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 3 Connectors - -
    B00403HC01
    *A Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 2 Connectors - -

    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

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    2. Reconnect the instrument panel junction block assembly connectors.

    3. 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 connectors disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      MB-11 (GND1) - Body ground - Ground Always Below 1 Ω
      MB-31 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Ignition switch ACC 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Ignition switch off Below 1 V
      MB-32 (IG) - Body ground - IG power supply Ignition switch ON 11 to 14 V
      MB-32 (IG) - Body ground - IG power supply Ignition switch off Below 1 V

    4. Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.

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    5. Measure the voltage and check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F18-28 (GOSW) - Body ground G - Body ground Glass hatch opener switch signal Glass hatch opener switch assembly on Below 1 V
      F18-28 (GOSW) - Body ground G - Body ground Glass hatch opener switch signal Glass hatch opener switch assembly off Pulse generation
      F18-21 (GHRY) - Body ground LG - Body ground Glass hatch opener relay signal Ignition switch ON, glass hatch opener switch assembly on Below 1 V
      F18-21 (GHRY) - Body ground LG - Body ground Glass hatch opener relay signal Ignition switch ON, glass hatch opener switch assembly off 11 to 14 V
      F18-27 (GCTY) - Body ground R - Body ground Glass hatch courtesy switch signal Glass hatch open Below 1 V
      F18-27 (GCTY) - Body ground R - Body ground Glass hatch courtesy switch signal Glass hatch closed Pulse generation