BACK DOOR CLOSER SYSTEM TERMINALS OF ECU


  1. CHECK POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT)

    A01NHK5E15

    1. Disconnect the P33 power back door ECU connector.

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      P33-12 (B) - Body ground Y - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      P33-10 (ECUB) - Body ground BR - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      P33-8 (IG) - Body ground SB - Body ground IG power supply Power switch on (IG) 11 to 14 V
      P33-8 (IG) - Body ground SB - Body ground IG power supply Power switch off Below 1 V
      P33-11 (GND) - 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. Reconnect the P33 power back door ECU connector.

    4. Initialize the power back door ECU (power back door motor unit) Click here.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      P33-2 (DC+) - P33-1 (DC-) LG - W-B Back door lock motor circuit Back door lock motor operating 11 to 14 V
      P33-2 (DC+) - P33-1 (DC-) LG - W-B Back door lock motor circuit Back door lock motor not operating Below 1 V
      P33-20 (FUL) - Body ground P - Body ground Back door courtesy switch circuit Back door closed 11 to 14 V
      P33-20 (FUL) - Body ground P - Body ground Back door courtesy switch circuit Back door open Below 1 V
      P33-22 (HAF) - Body ground R - Body ground Back door lock latch switch signal circuit Back door fully open Below 1 V
      P33-22 (HAF) - Body ground R - Body ground Back door lock latch switch signal circuit Back door closed 11 to 14 V
      P33-16 (PAWL) - Body ground B - Body ground Back door lock pawl switch signal circuit Fully open → back door ajar Below 1 V → 11 to 14 V → Below 1 V
      P33-16 (PAWL) - Body ground B - Body ground Back door lock pawl switch signal circuit Back door ajar → back door closed Below 1 V → 11 to 14 V → Below 1 V
      P33-16 (PAWL) - Body ground B - Body ground Back door lock pawl switch signal circuit Back door closed → operation finished Below 1 V
      P33-24 (POS) - Body ground LG - Body ground Back door lock position switch signal circuit Back door open → Back door closer operates → Back door closed Below 1 V → 11 to 14 V → Below 1 V

      If the result is not as specified, the power back door ECU (power back door motor unit) may have a malfunction.

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A01NFU2E07

    1. Disconnect the F58 connector.

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

      Tech Tips

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      F58-22 (TSW5) - Body ground L - Body ground Back door opener switch signal Back door opener switch on Below 1 Ω
      F58-22 (TSW5) - Body ground L - Body ground Back door opener switch signal Back door opener switch off 10 kΩ or higher

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

    3. Reconnect the F58 connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      F58-22 (TSW5) - Body ground L - Body ground Back door opener switch signal Back door opener switch off Pulse generation
      F58-22 (TSW5) - Body ground L - Body ground Back door opener switch signal Back door opener switch on Below 1 V

      If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.