ELECTRONIC SHIFT LEVER SYSTEM TERMINALS OF ECU


  1. TRANSMISSION CONTROL ECU INSPECTION

    A003Z61E07

    Tech Tips

    Inspect the connectors from the back while the connector is connected.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A21-1 (MWA) - A22-6 (E01) W - W-B Parking lock motor Engine stopped (hybrid system stopped), power switch on (IG) 9 to 14 V
    A21-2 (MVA) - A22-6 (E01) R - W-B Parking lock motor Engine stopped (hybrid system stopped), power switch on (IG) 9 to 14 V
    A21-5 (MUA) - A22-6 (E01) B - W-B Parking lock motor Engine stopped (hybrid system stopped), power switch on (IG) 9 to 14 V
    A21-7 (VC) - A21-19 (E2) G - P Power source (Rotation angle sensor) Engine stopped (hybrid system stopped), power switch on (IG) 4.5 to 5.5 V
    A21-8 (RB) - A21-19 (E2) GR - P Rotation angle sensor signal Power switch off → Power switch on (IG) 0 to 1.5 V ←→ 4 to 5.5 V

    Power switch on (IG)

    Changing from park (P) to neutral (N), or neutral (N) to park (P).

    Pulse generation

    (see waveform 1)
    A21-15 (BATT) - A22-1 (E1) SB - BR Power source (RAM) Always 9 to 14 V
    A21-16 (+B) - A22-1 (E1) GR - BR Power source Engine stopped (hybrid system stopped), power switch on (IG) 9 to 14 V
    A21-17 (RA) - A21-19 (E2) LG - P Rotation angle sensor signal Power switch off → Power switch on (IG) 0 to 1.5 V ←→ 4 to 5.5 V

    Power switch on (IG)

    Changing from park (P) to neutral (N), or neutral (N) to park (P).

    Pulse generation

    (see waveform 1)
    A21-19 (E2) - Body ground P - Body ground Rotation angle sensor ground Always Below 1 Ω
    A21-20 (IND) - A22-1 (E1) R - BR P position switch indicator light Park (P) not selected → Park (P) selected [P position switch (transmission shift main switch) pushed to select park (P)] 9 to 14 V → 0 to 1.5 V
    A21-23 (BMA) - A22-1 (E1) B - BR P CON MTR relay (transaxle parking lock control relay) Engine stopped (hybrid system stopped), power switch on (IG) 9 to 14 V
    A22-1 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
    A22-5 (E02) - Body ground W-B - Body ground Ground Always Below 1 Ω
    A22-6 (E01) - Body ground W-B - Body ground Ground Always Below 1 Ω
    A22-15 (CA1L) - A22-1 (E1) BR - BR CAN communication Power switch on (IG)

    Pulse generation

    (see waveform 2)
    A22-16 (CA1H) - A22-1 (E1) Y - BR CAN communication Power switch on (IG)

    Pulse generation

    (see waveform 2)
    A22-22 (PCON) - A22-1 (E1) LG - BR Communication bus Engine stopped (hybrid system stopped), power switch on (IG)

    Pulse generation

    (see waveform 3)
    A22-23 (PPOS) - A22-1 (E1) V - BR Communication bus Engine stopped (hybrid system stopped), power switch on (IG)

    Pulse generation

    (see waveform 3)
    A22-24 (LIN) B LIN communication - -

  2. Oscilloscope waveforms

    Tech Tips

    Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.


    1. A003ZHSE01

      Waveform 1 (Rotation angle sensor signal)

      Item Contents
      Terminal

      A21-17 (RA) - A21-19 (E2)

      A21-8 (RB) - A21-19 (E2)
      Equipment setting 2 V/DIV., 100 msec./DIV.
      Condition

      Power switch on (IG)

      Changing from park (P) to neutral (N), or neutral (N) to park (P).

      Tech Tips


      • When changing from park (P) to neutral (N), or neutral (N) to park (P) with the power switch on (IG), a waveform will be generated for up to 0.5 seconds.

      • The waveform shown is for reference only.

    2. A003WK3E03

      Waveform 2 (CAN communication signal)

      Item Contents
      Terminal

      CH1: A22-16 (CA1H) - A22-1 (E1)

      CH2: A22-15 (CA1L) - A22-1 (E1)
      Equipment setting 1 V/DIV., 50 μs/DIV.
      Condition Power switch on (IG)
    3. A003Z04E01

      Waveform 3 (Transmission control communication signal)

      Item Contents
      Terminal

      CH1: A22-22 (PCON) - A22-1 (E1)

      CH2: A22-23 (PPOS) - A22-1 (E1)
      Equipment setting 10 V/DIV., 10 ms/DIV.
      Condition Power switch on (IG)