CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM TERMINALS OF ECM


  1. ECM

    A00Y7CHE02

    Tech Tips

    The standard voltage and resistance of each ECM terminal 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 or resistance between the terminals is shown under "Specified Condition".

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

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A50-1 (BATT) - B31-16 (E1) P - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    A50-2 (+B) - B31-16 (E1) B - BR Power source of ECM Ignition switch ON 11 to 14 V
    A50-3 (+B2) - B31-16 (E1) B - BR Power source of ECM Ignition switch ON 11 to 14 V
    A50-9 (STP) - B31-16 (E1) L - BR Stop light switch assembly signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released Below 1.5 V
    A50-13 (CANH) - B31-16 (E1) B - BR CAN communication line Ignition switch ON Pulse generation
    A50-26 (CANL) - B31-16 (E1) W - BR CAN communication line Ignition switch ON Pulse generation
    A50-41 (S) - B31-16 (E1) L - BR M position switch signal Ignition switch ON and shift lever in M 11 to 14 V
    Ignition switch ON and shift lever not in M Below 1 V
    A50-42 (SFTU) - B31-16 (E1) W - BR Up-shift position switch signal Ignition switch ON and shift lever in M 11 to 14 V

    • Ignition switch ON and shift lever in "+"

    • Ignition switch ON and "+" shift paddle operated

    		 Below 1 V
    A50-43 (SFTD) - B31-16 (E1) R - BR Down-shift position switch signal Ignition switch ON and shift lever in M 11 to 14 V

    • Ignition switch ON and shift lever in "-"

    • Ignition switch ON and "-" shift paddle operated

    		 Below 1 V
    A50-46 (MREL) - B31-16 (E1) L - BR EFI MAIN relay Ignition switch ON 11 to 14 V
    A50-57 (PWMS) - B31-16 (E1) G - BR Pattern select switch (SPORT) signal Ignition switch ON and pattern select switch (SPORT) off 11 to 14 V
    Ignition switch ON and pattern select switch (SPORT) on Below 1.5 V
    B31-16 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
    B31-29 (+BM) - B31-16 (E1) B - BR Power source of ECM Always 11 to 14 V
    B31-63 (NSW) - B31-16 (E1) W - BR Park/neutral position switch signal Ignition switch ON and shift lever in P or N Below 1 V
    Ignition switch ON and shift lever not in P or N 11 to 14 V
    B31-67 (SLT+) - B31-66 (SLT-) LG - V Shift solenoid valve SLT signal Engine idling Pulse generation
    B31-69 (DS2) - B31-16 (E1) G - BR Shift solenoid valve DS2 signal Accelerator pedal depressed further after driving at constant vehicle speed with shift lever in D Pulse generation
    B31-70 (DS1) - B31-16 (E1) P - BR Shift solenoid valve DS1 signal Accelerator pedal released while driving with shift lever in D Pulse generation
    B31-71 (DSU) - B31-16 (E1) R - BR Shift solenoid valve DSU signal Lock-up turned from off to on Pulse generation
    B31-73 (SLS+) - B31-72 (SLS-) B - L Shift solenoid valve SLS signal Engine idling Pulse generation
    B31-79 (R) - B31-16 (E1) L - BR R position switch signal Ignition switch ON and shift lever in R 11 to 14 V
    Ignition switch ON and shift lever not in R Below 1 V
    B31-81 (D) - B31-16 (E1) GR - BR D position switch signal Ignition switch ON and shift lever in D 11 to 14 V
    Ignition switch ON and shift lever not in D Below 1 V
    B31-89 (PTO) - B31-121 (EPTO) R - V Oil pressure sensor signal Engine idle speed and shift lever in P 0.8 to 1.2 V
    B31-95 (THO1) - B31-96 (ETHO) Y - GR CVT fluid temperature sensor signal CVT fluid temperature: 60 to 120°C (140 to 248°F) 0.2 to 1.0 V
    B31-97 (N) - B31-16 (E1) B - BR N position switch signal Ignition switch ON and shift lever in N 11 to 14 V
    Ignition switch ON and shift lever not in N Below 1 V
    B31-99 (P) - B31-16 (E1) V - BR P position switch signal Ignition switch ON and shift lever in P 11 to 14 V
    Ignition switch ON and shift lever not in P Below 1 V
    B31-120 (VCPT) - B31-121 (EPTO) R - V Power supply for oil pressure sensor signal Ignition switch ON 4.5 to 5.5 V
    B31-125 (NTO) - B31-16 (E1) GR - BR Transmission revolution sensor (NT) signal When driving with shift lever in D Pulse generation
    B31-126 (NTB) - B31-16 (E1) P - BR Power supply for transmission revolution sensor (NT) Ignition switch ON 4.75 to 5.25 V
    B31-127 (NIN+) - B31-128 (NIN-) P - V Transmission revolution sensor (NIN) signal When driving with shift lever in D Pulse generation
    B31-129 (NOTO) - B31-16 (E1) G - BR Transmission revolution sensor (NOUT) signal When driving with shift lever in D Pulse generation
    B31-130 (NOTB) - B31-16 (E1) R - BR Power supply for transmission revolution sensor (NOUT) Ignition switch ON 4.75 to 5.25 V