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TAIL GATE CLOSER SYSTEM TERMINALS OF ECU

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  1. A015DA5E02

    CHECK NO. 2 MAIN BODY ECU


    1. Disconnect the L50 and L51 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
      L50-14 (BECU) - Body ground R - Body ground BECU power supply Always 11 to 14 V
      L50-13 (SIG) - Body ground G - Body ground SIG power supply Engine switch on (IG) 11 to 14 V
      L50-13 (SIG) - Body ground G - Body ground SIG power supply Engine switch off Below 1 V
      L51-5 (B) - Body ground B - Body ground Lower tail gate lock motor RH power supply Always 11 to 14 V
      L51-6 (B) - Body ground W - Body ground Lower tail gate lock motor LH power supply Always 11 to 14 V
      L50-7 (GND) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      L51-7 (GND) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      L50-19 (BDSU) - Body ground V - Body ground Back door remote control signal circuit Back door remote control pulled (on) Below 1 Ω
      L50-19 (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 L50 and L51 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
      L51-3 (DC+) - L51-7 (GND) R - W-B Lower tail gate lock motor LH circuit Lower tail gate lock motor LH operating (close) 11 to 14 V
      L51-3 (DC+) - L51-7 (GND) R - W-B Lower tail gate lock motor LH circuit Lower tail gate lock motor LH stopped Below 1 V
      L51-8 (DC-) - L51-7 (GND) B - W-B Lower tail gate lock motor LH circuit Lower tail gate lock motor LH operating (open) 11 to 14 V
      L51-8 (DC-) - L51-7 (GND) B - W-B Lower tail gate lock motor LH circuit Lower tail gate lock motor LH stopped Below 1 V
      L51-2 (DC+) - L51-7 (GND) G - W-B Lower tail gate lock motor RH circuit Lower tail gate lock motor RH operating (close) 11 to 14 V
      L51-2 (DC+) - L51-7 (GND) G - W-B Lower tail gate lock motor RH circuit Lower tail gate lock motor RH stopped Below 1 V
      L51-1 (DC-) - L51-7 (GND) W - W-B Lower tail gate lock motor RH circuit Lower tail gate lock motor RH operating (open) 11 to 14 V
      L51-1 (DC-) - L51-7 (GND) W - W-B Lower tail gate lock motor RH circuit Lower tail gate lock motor RH stopped Below 1 V
      L51-9 (HAF) - L51-7 (GND) GR - W-B Half-latch switch LH signal circuit Lower tail gate open Below 1 V
      L51-9 (HAF) - L51-7 (GND) GR - W-B Half-latch switch LH signal circuit Lower tail gate closed

      Pulse generation

      (See waveform 1)
      L50-8 (HAF) - L51-7 (GND) B - W-B Half-latch switch RH signal circuit Lower tail gate open Below 1 V
      L50-8 (HAF) - L51-7 (GND) B - W-B Half-latch switch RH signal circuit Lower tail gate closed

      Pulse generation

      (See waveform 1)
      L51-4 (FUL) - L51-7 (GND) G - W-B Lower tail gate courtesy switch LH signal circuit Lower tail gate open Below 1 V
      L51-4 (FUL) - L51-7 (GND) G - W-B Lower tail gate courtesy switch LH signal circuit Lower tail gate closed

      Pulse generation

      (See waveform 1)
      L50-22 (FUL) - L51-7 (GND)

      Y - W-B*1

      P - W-B*2

      		 Lower tail gate courtesy switch RH signal circuit Lower tail gate open Below 1 V
      L50-22 (FUL) - L51-7 (GND)

      Y - W-B*1

      P - W-B*2

      		 Lower tail gate courtesy switch RH signal circuit Lower tail gate closed

      Pulse generation

      (See waveform 1)
      L51-10 (LMT) - L51-7 (GND)

      Y - W-B*1

      P - W-B*2

      		 Close position switch LH signal circuit Lower tail gate closed Below 1 V
      L51-10 (LMT) - L51-7 (GND)

      Y - W-B*1

      P - W-B*2

      		 Close position switch LH signal circuit Lower tail gate open

      Pulse generation

      (See waveform 2)
      L50-17 (LMT) - L51-7 (GND) L - W-B Close position switch RH signal circuit Lower tail gate closed Below 1 V
      L50-17 (LMT) - L51-7 (GND) L - W-B Close position switch RH signal circuit Lower tail gate open

      Pulse generation

      (See waveform 2)
      L50-15 (POL) - L51-7 (GND) L - W-B Pawl switch LH signal circuit Lower tail gate lock motor LH is operating Below 1 V
      L50-15 (POL) - L51-7 (GND) L - W-B Pawl switch LH signal circuit Lower tail gate open

      Pulse generation

      (See waveform 2)
      L50-16 (POL) - L51-7 (GND) R - W-B Pawl switch RH signal circuit Lower tail gate lock motor RH is operating Below 1 V
      L50-16 (POL) - L51-7 (GND) R - W-B Pawl switch RH signal circuit Lower tail gate open

      Pulse generation

      (See waveform 2)
      L50-19 (BDSU) - L51-7 (GND) V - W-B Back door remote control signal circuit Back door remote control pulled (on) Below 1 V
      L50-19 (BDSU) - L51-7 (GND) V - W-B Back door remote control signal circuit Back door remote control free (off)

      Pulse generation

      (See waveform 3)

      • *1: Model code: GRJ200L-GNANKC, URJ202L-GNTEKC

      • *2: Model code except: GRJ200L-GNANKC, URJ202L-GNTEKC

    5. A0155VIE01

      Using an oscilloscope, check waveform 1.

      Table 1. Waveform 1 (Reference)
      Item Content
      Terminal (Symbol)

      • L51-9 (HAF) - L51-7 (GND)

      • L50-8 (HAF) - L51-7 (GND)

      • L51-4 (FUL) - L51-7 (GND)

      • L50-22 (FUL) - L51-7 (GND)
      Tool Setting 5 V/DIV., 5 ms/DIV
      Condition Lower tail gate closed
    6. A0155LLE01

      Using an oscilloscope, check waveform 2.

      Table 2. Waveform 2 (Reference)
      Item Content
      Terminal (Symbol)

      • L51-10 (LMT) - L51-7 (GND)

      • L50-17 (LMT) - L51-7 (GND)

      • L51-15 (POL) - L51-7 (GND)

      • L50-16 (POL) - L51-7 (GND)
      Tool Setting 5 V/DIV., 5 ms/DIV
      Condition Lower tail gate open
    7. A0155VIE01

      Using an oscilloscope, check waveform 3.

      Table 3. Waveform 3 (Reference)
      Item Content
      Terminal (Symbol) L50-19 (BDSU) - L51-7 (GND)
      Tool Setting 5 V/DIV., 5 ms/DIV
      Condition Back door remote control free (off)