AUTOMATIC TRANSMISSION SYSTEM(for 8AR-FTS) TERMINALS OF ECM


  1. ECM

    A01MYRWN12

    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
    A91-1 (BATT) - F78-53 (E1) L - W-B Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    A91-2 (+B) - F78-53 (E1) R - W-B Power source of ECM Engine switch on (IG) 11 to 14 V
    A91-3 (+B2) - F78-53 (E1) B - W-B Power source of ECM Engine switch on (IG) 11 to 14 V
    A91-9 (STP) - F78-53 (E1) R - W-B Stop light switch signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released Below 1 V
    A91-13 (CANH) - F78-53 (E1) R - W-B CAN communication line Engine switch on (IG) Pulse generation
    A91-26 (CANL) - F78-53 (E1) B - W-B CAN communication line Engine switch on (IG) Pulse generation
    A91-29 (STA) - F78-53 (E1)

    R - W-B*1

    B - W-B*2

    		 Starter signal Cranking (shift lever in P or N, engine switch on (START)) 11 to 14 V
    Engine switch on (IG) and shift lever in P or N Below 2 V

    A91-42 (SFTU) - A91-41 (ECCS)*3

    A91-42 (SFTU) - F78-53 (E1)*4

    V - L*3

    V - W-B*4

    		 Up-shift switch signal Engine switch on (IG) 11 to 14 V

    • Engine switch on (IG) and shift lever held in "+"

    • Engine switch on (IG) and "+" shift paddle switch pulled

    		 Below 1 V

    A91-43 (SFTD) - A91-41 (ECCS)*3

    A91-43 (SFTD) - F78-53 (E1)*4

    P - L*3

    P - W-B*4

    		 Down-shift switch signal Engine switch on (IG) 11 to 14 V

    • Engine switch on (IG) and shift lever held in "-"

    • Engine switch on (IG) and "-" shift paddle switch pulled

    		 Below 1 V
    A91-53 (KD) - F78-53 (E1) B - W-B Kick-down switch signal Engine switch on (IG) and accelerator pedal depressed Below 1 V
    Engine switch on (IG) and accelerator pedal released 11 to 14 V
    A91-57 (NSW) - F78-53 (E1) L - W-B Park/neutral position switch signal Engine switch on (IG) and shift lever in P or N Below 1 V
    Engine switch on (IG) and shift lever not in P or N 11 to 14 V
    A91-59 (S) - F78-53 (E1) GR - W-B M shift position switch signal Engine switch on (IG) and shift lever in M 11 to 14 V
    Engine switch on (IG) and shift lever not in M Below 1 V
    F78-1 (SLT+) - F78-31 (SLT-) V - Y Solenoid (SLT) valve signal Engine idling Pulse generation
    F78-3 (SLU+) - F78-2 (SLU-) GR - R Solenoid (SLU) valve signal

    • D position:

      3rd, 4th, 5th, 6th, 7th or 8th gear

      (Flex lock-up ON and Lock-up ON )

    • M position:

      2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear

      (Lock-up ON )

    		 Pulse generation
    F78-5 (SL2+) - F78-4 (SL2-) G - R Solenoid (SL2) valve signal 5th, 6th, 7th or 8th gear Pulse generation
    F78-7 (SL3+) - F78-6 (SL3-) G - R Solenoid (SL3) valve signal 3rd or 7th gear Pulse generation
    F78-11 (SL5+) - F78-10 (SL5-) P - G Solenoid (SL5) valve signal 2nd or 8th gear Pulse generation
    F78-13 (SL4+) - F78-12 (SL4-) W - L Solenoid (SL4) valve signal 4th or 6th gear Pulse generation
    F78-15 (SL1+) - F78-14 (SL1-) Y - B Solenoid (SL1) valve signal 1st, 2nd, 3rd, 4th or 5th gear Pulse generation
    F78-34 (D) - F78-53 (E1) W - W-B D shift position switch signal Engine switch on (IG) and shift lever in D or M 11 to 14 V
    Engine switch on (IG) and shift lever not in D or M Below 1 V
    F78-35 (R) - F78-53 (E1) R - W-B R shift position switch signal Engine switch on (IG) and shift lever in R 11 to 14 V
    Engine switch on (IG) and shift lever not in R Below 1 V
    F78-43 (SP2B) - F78-53 (E1) R - W-B

    Power source for sensor

    (specific voltage)

    		 Engine switch on (IG) 11 to 14 V
    F78-44 (SP2O) - F78-53 (E1) G - W-B Transmission Revolution Sensor (SP2) signal Vehicle speed 20 km/h (12 mph) Pulse generation
    F78-45 (SC2) - F78-53 (E1) L - W-B Solenoid (SC2) valve signal 2nd, 3rd, 4th, 5th, 6th, 7th, 8th gear or shift lever in R 11 to 14 V
    F78-53 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
    F78-64 (P) - F78-53 (E1) B - W-B P shift position switch signal Engine switch on (IG) and shift lever in P 11 to 14 V
    Engine switch on (IG) and shift lever not in P Below 1 V
    F78-65 (N) - F78-53 (E1) G - W-B N shift position switch signal Engine switch on (IG) and shift lever in N 11 to 14 V
    Engine switch on (IG) and shift lever not in N Below 1 V
    F78-71 (NTB) - F78-53 (E1) B - W-B

    Power source for sensor

    (specific voltage)

    		 Engine switch on (IG) 11 to 14 V
    F78-72 (NTO) - F78-53 (E1) W - W-B Transmission Revolution Sensor (NT) signal Engine idling (shift lever in P or N) Pulse generation
    F78-73 (NC3B) - F78-53 (E1) L - W-B

    Power source for sensor

    (specific voltage)

    		 Engine switch on (IG) 11 to 14 V
    F78-74 (NC3O) - F78-53 (E1) Y - W-B Transmission Revolution Sensor (NC3) signal 1st, 3rd, 4th, 5th, 6th or 7th gear Pulse generation
    F78-75 (SC1) - F78-53 (E1) B - W-B Solenoid (SC1) valve signal

    • Shift lever in P or N

    • Shift lever in M: M1 (1st gear) selected

    		 11 to 14 V
    F78-84 (THO1) - F78-83 (ETHO) L - BR ATF temperature sensor signal ATF temperature 115°C (239°F) or higher Below 1.5 V

    *1: w/o Stop and Start System

    *2: w/ Stop and Start System

    *3: w/o Dynamic Radar Cruise Control System

    *4: w/ Dynamic Radar Cruise Control System