BACK DOOR CLOSER SYSTEM TERMINALS OF ECU

  1. CHECK MULTIPLEX NETWORK DOOR ECU

    B426088E02

    1. Disconnect the U29 and U30 multiplex network door ECU connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      U29-20 (ECUB) - Body ground

      W - Body ground

      Auxiliary battery power supply

      Power switch off

      11 to 14 V

      U29-18 (IG) - Body ground

      W - Body ground

      IG power supply

      Power switch on (IG)

      11 to 14 V

      U29-18 (IG) - Body ground

      W - Body ground

      IG power supply

      Power switch off

      Below 1 V

      U30-1 (B) - Body ground

      W - Body ground

      Auxiliary battery power supply

      Power switch off

      11 to 14 V

      U30-10 (GND) - Body ground

      W-B - Body ground

      Body ground

      Always

      Below 1 Ω

    3. Reconnect the U29 and U30 multiplex network door ECU connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      U30-4 (DC+) - U30-3 (DC-)

      B - R

      Back door lock assembly (back door lock motor) circuit

      Back door lock motor operating

      11 to 14 V

      U30-4 (DC+) - U30-3 (DC-)

      B - R

      Back door lock assembly (back door lock motor) circuit

      Back door lock motor not operating

      Below 1 V

      U29-11 (FUL) - Body ground

      W - Body ground

      Back door lock assembly (back door courtesy switch) signal circuit

      Back door closed → open

      11 to 14 V → Below 1 V

      U29-9 (HAF) - Body ground

      G - Body ground

      Back door lock assembly (latch switch) signal circuit

      Back door closed → fully open

      11 to 14 V → Below 1 V

      U29-13 (PAWL) - Body ground

      W - Body ground

      Back door lock assembly (pawl switch) signal circuit

      Back door fully open → Partially close → back door fully close → power back door operate stop

      Below 1 V → 11 to 14 V → 11 to 14 V → Below 1 V

      U29-7 (POS) - Body ground

      GR - Body ground

      Back door lock assembly (sector switch) signal circuit

      Back door open → Back door closer operates → Back door closed

      Below 1 V → 11 to 14 V → Below 1 V

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B264892E77

    1. Disconnect the G82 and G84 certification ECU (smart key ECU assembly) connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      G82-2 (+B) - Body ground

      W - Body ground

      Auxiliary battery power supply

      Power switch off

      11 to 14 V

      G82-10 (CUTB) - Body ground

      P - Body ground

      Auxiliary battery power supply

      Power switch off

      11 to 14 V

      G84-5 (IG) - Body ground

      LG - Body ground

      IG power supply

      Power switch on (IG)

      11 to 14 V

      G84-5 (IG) - Body ground

      LG - Body ground

      IG power supply

      Power switch off

      Below 1 V

      G82-11 (E) - Body ground

      BR - Body ground

      Body ground

      Always

      Below 1 Ω

    3. Reconnect the G82 and G84 certification ECU (smart key ECU assembly) connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      G83-27 (TSW5) - Body ground

      Y - Body ground

      Back door opener switch assembly signal

      Back door opener switch assembly off

      Pulse generation

      G83-27 (TSW5) - Body ground

      Y - Body ground

      Back door opener switch assembly signal

      Back door opener switch assembly on

      Below 1 V
  3. C278789E07
    B440936C04

    *1

    Main Body ECU (Multiplex Network Body ECU)

    -

    -

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

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

      for RHD:Click here

      for LHD:Click here

    2. Connect the instrument panel junction block assembly connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      A-30 (BECU) -Body ground

      None - Body ground

      Auxiliary battery power supply

      Power switch off

      11 to 14 V

      A-29 (ACC) -Body ground

      None - Body ground

      ACC power supply

      Power switch on (ACC)

      11 to 14 V

      A-29 (ACC) -Body ground

      None - Body ground

      ACC power supply

      Power switch off

      Below 1 V

      A-32 (IG) - Body ground

      None - Body ground

      IG power supply

      Power switch on (IG)

      11 to 14 V

      A-32 (IG) - Body ground

      None - Body ground

      IG power supply

      Power switch off

      Below 1 V

      A-11 (GND1) - Body ground

      None - Body ground

      Body ground

      Always

      Below 1 Ω