AUTOMATIC TRANSAXLE SYSTEM TERMINALS OF ECU


  1. TCM

    A01ELDXE06

    Tech Tips

    Each TCM terminal standard voltage is shown in the table below.

    In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

    Use the illustration above as a reference for the TCM terminals.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    B40-15 (R) - B40-8 (E1) G - BR R shift position switch signal Ignition switch ON and shift lever in R 11 to 14 V
    Ignition switch ON and shift lever in any position except R Below 1 V
    B40-16 (D) - B40-8 (E1) LG - BR D shift position switch signal Ignition switch ON and shift lever in D and S 11 to 14 V
    Ignition switch ON and shift lever in any position except D and S Below 1 V
    B40-12 (STP) - B40-8 (E1) P - BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
    Brake pedal is released Below 1.5 V
    B40-11 (NSW) - B40-8 (E1) GR - BR Park/neutral switch signal Ignition switch ON and shift lever in P or N Below 2 V
    Ignition switch ON and shift lever in any position except P or N 11 to 14 V
    B40-10 (STA) - B40-8 (E1) V - BR Starter signal Cranking (shift lever in P or N) 11 to 14 V
    Ignition switch ON and shift lever in any position except P or N Below 2 V
    B40-3 (SPD) - B40-8 (E1) L - BR Speed signal from combination meter Vehicle speed 20 km/h (12 mph)

    Pulse generation

    (see waveform 1)
    B40-1 (BATT) - B40-8 (E1) W-L - BR Battery (for measuring battery voltage and for TCM memory) Always 9 to 14 V
    B40-13 (IGSW) - B40-8 (E1) Y - BR Ignition switch Ignition switch ON 9 to 14 V
    B40-18 (+B) - B40-8 (E1) Y - BR Power source of TCM Ignition switch ON 9 to 14 V
    B40-6 (CAN+) - B40-8 (E1) R - BR CAN communication line Ignition switch ON

    Pulse generation

    (see waveform 2)
    B40-7 (CAN-) - B40-8 (E1) W - BR CAN communication line Ignition switch ON

    Pulse generation

    (see waveform 3)

    1. A01EMS5E05

      Waveform 1

      Reference
      Terminal SPD - E1
      Tool setting 2 V/DIV., 20 ms./DIV.
      Vehicle condition Vehicle speed 20 km/h (12 mph)
    2. A01EJCRE06

      Waveform 2

      Reference
      Terminal CAN+ - E1
      Tool setting 1 V/DIV., 10 ms./DIV.
      Vehicle condition Engine is stopped, ignition switch ON
    3. A01EK6VE05

      Waveform 3

      Reference
      Terminal CAN- - E1
      Tool setting 1 V/DIV., 10 ms./DIV.
      Vehicle condition Engine is stopped, ignition switch ON

  2. ECM

    Tech Tips

    Each ECM terminal standard voltage is shown in the table below.

    In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

    Use the illustration below as a reference for the ECM terminals.

    A01EJV3E12
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A49-14 (S) - B58-104 (E1) BE - BR S shift position switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in any position except S Below 1 V
    A49-16 (SFTU) - B58-104 (E1) R - BR Up shift switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in "+" (Up shift) Below 1 V
    A49-51 (SFTD) - B58-104 (E1) LG - BR Down shift switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in "-" (Down shift) Below 1 V