AUTOMATIC TRANSAXLE SYSTEM TERMINALS OF ECM


  1. ECM

    A0027PZN30

    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
    A43-1 (BATT) - C1-53 (E1) GR - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    A43-2 (+B) - C1-53 (E1) G - BR Power source of ECM Ignition switch ON 11 to 14 V
    A43-3 (+B2) - C1-53 (E1) R - BR Power source of ECM Ignition switch ON 11 to 14 V
    A43-8 (+BM) - C1-53 (E1) B - BR Power source of ECM Always 11 to 14 V
    A43-13 (CANH) - C1-53 (E1) B - BR CAN communication line Ignition switch ON Pulse generation
    A43-17 (S) - C1-53 (E1) LG - BR S shift position switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever not in S Below 1 V
    A43-26 (CANL) - C1-53 (E1) W - BR CAN communication line Ignition switch ON Pulse generation
    A43-27 (STP) - C1-53 (E1) G - BR Stop light switch signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released Below 1 V
    A43-37 (SFTD) - C1-53 (E1) SB - BR Down-shift switch signal Ignition switch ON 11 to 14 V
    Ignition switch ON and shift lever held in "-" (Down shift) Below 1 V
    A43-38 (SFTU) - C1-53 (E1) V - BR Up-shift switch signal Ignition switch ON 11 to 14 V
    Ignition switch ON and shift lever held in "+" (Up shift) Below 1 V
    A43-39 (SPD) - C1-53 (E1) BE - BR Vehicle speed signal from combination meter assembly Driving at 20 km/h (12 mph) Pulse generation
    A43-43 (STA) - C1-53 (E1) P - BR Starter signal Cranking (shift lever in P or N, ignition switch ON (START)) 11 to 14 V
    Ignition switch ON and shift lever in P or N Below 2 V
    C1-6 (SL3+) - C1-7 (SL3-) L - R Solenoid (SL3) valve signal 3rd, 7th or Reverse gear Pulse generation
    C1-10 (SL5+) - C1-11 (SL5-) W - R Solenoid (SL5) valve signal 2nd or 8th gear Pulse generation
    C1-12 (SL1+) - C1-13 (SL1-) G - BR Solenoid (SL1) valve signal 1st, 2nd, 3rd, 4th or 5th gear Pulse generation
    C1-14 (SL4+) - C1-15 (SL4-) LG - R Solenoid (SL4) valve signal 4th or 6th gear Pulse generation
    C1-31 (SL2+) - C1-1 (SL2-) LG - P Solenoid (SL2) valve signal 5th, 6th, 7th or 8th gear Pulse generation
    C1-32 (SL6+) - C1-33 (SL6-) GR - LG Solenoid (SL6) valve signal 1st or Reverse gear Pulse generation
    C1-67 (SLT+) - C1-37 (SLT-) G - B Solenoid (SLT) valve signal Engine idling Pulse generation
    C1-53 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
    C1-76 (SLU+) - C1-61 (SLU-) L - B Solenoid (SLU) valve signal Lock-up ON Pulse generation
    C1-62 (SL) - C1-53 (E1) W - BR Solenoid (SL) valve signal

    • Shift lever in P, R or N

    • Lock-up OFF (shift lever in D)

    		 11 to 14 V
    C1-72 (NCO) - C1-53 (E1) L - BR Transmission Revolution Sensor (NC) signal Vehicle being driven Pulse generation
    C1-73 (NCB) - C1-53 (E1) G - BR

    Power source for sensor

    (specific voltage)

    		 Ignition switch ON 11 to 14 V
    C1-74 (NTO) - C1-53 (E1) B - BR Transmission Revolution Sensor (NT) signal Engine idling (shift lever in P or N) Pulse generation
    C1-75 (NTB) - C1-53 (E1) R - BR

    Power source for sensor

    (specific voltage)

    		 Ignition switch ON 11 to 14 V
    C1-86 (THO1) - C1-133 (ETHW) W - BR ATF temperature sensor signal ATF temperature 115°C (239°F) or higher Below 1.5 V
    C1-106 (NSW) - C1-53 (E1) G - 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
    C1-107 (R) - C1-53 (E1) B - BR R shift 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
    C1-108 (P) - C1-53 (E1) G - BR P shift 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
    C1-139 (D) - C1-53 (E1) R - BR D shift position switch signal Ignition switch ON and shift lever in D or S 11 to 14 V
    Ignition switch ON and shift lever not in D or S Below 1 V
    C1-140 (N) - C1-53 (E1) W - BR N shift 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