TAIL GATE CLOSER SYSTEM TERMINALS OF ECU


  1. CHECK NO. 2 MAIN BODY ECU

    A01WRNKE02

    1. Disconnect the L33 and L34 No. 2 main body 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
      L33-14 (BECU) - Body ground R - Body ground BECU power supply Always 11 to 14 V
      L33-13 (SIG) - Body ground B - Body ground SIG power supply Engine switch on (IG) 11 to 14 V
      L33-13 (SIG) - Body ground B - Body ground SIG power supply Engine switch off Below 1 V
      L34-5 (B) - Body ground LA-B - Body ground Lower tail gate lock motor RH power supply Always 11 to 14 V
      L34-6 (B) - Body ground LA-W - Body ground Lower tail gate lock motor LH power supply Always 11 to 14 V
      L33-7 (GND) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      L34-7 (GND) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      L33-19 (BDSU) - Body ground V - Body ground Back door remote control signal circuit Back door remote control pulled (on) Below 1 Ω
      L33-19 (BDSU) - Body ground V - Body ground Back door remote control signal circuit Back door remote control free (off) 10 kΩ or higher

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

    3. Reconnect the L33 and L34 No. 2 main body 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
      L34-3 (DC+) - L34-7 (GND) R - W-B Lower tail gate lock motor LH circuit Lower tail gate lock motor LH operating (close) 11 to 14 V
      L34-3 (DC+) - L34-7 (GND) R - W-B Lower tail gate lock motor LH circuit Lower tail gate lock motor LH stopped Below 1 V
      L34-8 (DC-) - L34-7 (GND) B - W-B Lower tail gate lock motor LH circuit Lower tail gate lock motor LH operating (open) 11 to 14 V
      L34-8 (DC-) - L34-7 (GND) B - W-B Lower tail gate lock motor LH circuit Lower tail gate lock motor LH stopped Below 1 V
      L34-2 (DC+) - L34-7 (GND) G - W-B Lower tail gate lock motor RH circuit Lower tail gate lock motor RH operating (close) 11 to 14 V
      L34-2 (DC+) - L34-7 (GND) G - W-B Lower tail gate lock motor RH circuit Lower tail gate lock motor RH stopped Below 1 V
      L34-1 (DC-) - L34-7 (GND) W - W-B Lower tail gate lock motor RH circuit Lower tail gate lock motor RH operating (open) 11 to 14 V
      L34-1 (DC-) - L34-7 (GND) W - W-B Lower tail gate lock motor RH circuit Lower tail gate lock motor RH stopped Below 1 V
      L34-9 (HAF) - L34-7 (GND) GR - W-B Half-latch switch LH signal circuit Lower tail gate open Below 1 V
      L34-9 (HAF) - L34-7 (GND) GR - W-B Half-latch switch LH signal circuit Lower tail gate closed

      Pulse generation

      (See waveform 1)
      L33-8 (HAF) - L34-7 (GND) B - W-B Half-latch switch RH signal circuit Lower tail gate open Below 1 V
      L33-8 (HAF) - L34-7 (GND) B - W-B Half-latch switch RH signal circuit Lower tail gate closed

      Pulse generation

      (See waveform 1)
      L34-4 (FUL) - L34-7 (GND) G - W-B Lower tail gate courtesy switch LH signal circuit Lower tail gate open Below 1 V
      L34-4 (FUL) - L34-7 (GND) G - W-B Lower tail gate courtesy switch LH signal circuit Lower tail gate closed

      Pulse generation

      (See waveform 1)
      L33-22 (FUL) - L34-7 (GND) P - W-B Lower tail gate courtesy switch RH signal circuit Lower tail gate open Below 1 V
      L33-22 (FUL) - L34-7 (GND) P - W-B Lower tail gate courtesy switch RH signal circuit Lower tail gate closed

      Pulse generation

      (See waveform 1)
      L34-10 (LMT) - L34-7 (GND) P - W-B Close position switch LH signal circuit Lower tail gate closed Below 1 V
      L34-10 (LMT) - L34-7 (GND) P - W-B Close position switch LH signal circuit Lower tail gate open

      Pulse generation

      (See waveform 2)
      L33-17 (LMT) - L34-7 (GND) L - W-B Close position switch RH signal circuit Lower tail gate closed Below 1 V
      L33-17 (LMT) - L34-7 (GND) L - W-B Close position switch RH signal circuit Lower tail gate open

      Pulse generation

      (See waveform 2)
      L33-15 (POL) - L34-7 (GND) L - W-B Pawl switch LH signal circuit Lower tail gate lock motor LH is operating Below 1 V
      L33-15 (POL) - L34-7 (GND) L - W-B Pawl switch LH signal circuit Lower tail gate open

      Pulse generation

      (See waveform 2)
      L33-16 (POL) - L34-7 (GND) R - W-B Pawl switch RH signal circuit Lower tail gate lock motor RH is operating Below 1 V
      L33-16 (POL) - L34-7 (GND) R - W-B Pawl switch RH signal circuit Lower tail gate open

      Pulse generation

      (See waveform 2)
      L33-19 (BDSU) - L34-7 (GND) V - W-B Back door remote control signal circuit Back door remote control pulled (on) Below 1 V
      L33-19 (BDSU) - L34-7 (GND) V - W-B Back door remote control signal circuit Back door remote control free (off)

      Pulse generation

      (See waveform 3)
    5. A01WPH8E01

      Using an oscilloscope, check waveform 1.

      Waveform 1 (Reference)
      Item Content
      Terminal (Symbol)

      • L34-9 (HAF) - L34-7 (GND)

      • L33-8 (HAF) - L34-7 (GND)

      • L34-4 (FUL) - L34-7 (GND)

      • L33-22 (FUL) - L34-7 (GND)
      Tool Setting 5 V/DIV., 5 ms/DIV
      Condition Lower tail gate closed
    6. A01WQJ9E01

      Using an oscilloscope, check waveform 2.

      Waveform 2 (Reference)
      Item Content
      Terminal (Symbol)

      • L34-10 (LMT) - L34-7 (GND)

      • L33-17 (LMT) - L34-7 (GND)

      • L34-15 (POL) - L34-7 (GND)

      • L33-16 (POL) - L34-7 (GND)
      Tool Setting 5 V/DIV., 5 ms/DIV
      Condition Lower tail gate open
    7. A01WPH8E01

      Using an oscilloscope, check waveform 3.

      Waveform 3 (Reference)
      Item Content
      Terminal (Symbol) L33-19 (BDSU) - L34-7 (GND)
      Tool Setting 5 V/DIV., 5 ms/DIV
      Condition Back door remote control free (off)