TAIL GATE CLOSER SYSTEM TERMINALS OF ECU


  1. CHECK NO. 2 MAIN BODY ECU

    A01ER9EE01

    1. Disconnect the L33 and L34 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 G - Body ground SIG power supply Engine switch on (IG) 11 to 14 V
      L33-13 (SIG) - Body ground G - Body ground SIG power supply Engine switch off Below 1 V
      L34-5 (B) - Body ground B - Body ground Lower tail gate lock motor RH power supply Always 11 to 14 V
      L34-6 (B) - Body ground 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 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)

      If the result is not as specified, the ECU may have a malfunction.

    5. A01EP8ZE01

      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. A01EQ4KE01

      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. A01EP8ZE01

      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)