AUTOMATIC TRANSMISSION SYSTEM(for 1UR-FE) TERMINALS OF ECM


  1. CHECK ECM

    A01WZJSE01

    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 above as a reference for the ECM terminals.

    • *1: for LHD

    • *2: for RHD

    • *3: w/ Active Height Control Suspension

    • *4: w/o Active Height Control Suspension

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition

    A38-21 (L4) - C45-81 (E1)*1

    A52-21 (L4) - C46-81 (E1)*2

    		 R - BR L4 position signal

    • Engine switch on (IG)

    • Transfer in L4

    		 Below 1.5 V

    • Engine switch on (IG)

    • Transfer not in L4

    		 11 to 14 V

    C45-120 (NSW) - C45-81 (E1)*1

    C46-120 (NSW) - C46-81 (E1)*2

    		 L - BR PNP switch signal

    • Engine switch on (IG)

    • Shift lever in P or N

    		 Below 1 V

    • Engine switch on (IG)

    • Shift lever not in P or N

    		 11 to 14 V

    C45-2 (P) - C45-81 (E1)*1

    C46-2 (P) - C46-81 (E1)*2

    		 W - BR P shift position switch signal

    • Engine switch on (IG)

    • Shift lever in P

    		 11 to 14 V

    • Engine switch on (IG)

    • Shift lever not in P

    		 Below 1 V

    C45-26 (R) - C45-81 (E1)*1

    C46-26 (R) - C46-81 (E1)*2

    		 L - BR R shift position switch signal

    • Engine switch on (IG)

    • Shift lever in R

    		 11 to 14 V

    • Engine switch on (IG)

    • Shift lever not in R

    		 Below 1 V

    C45-25 (N) - C45-81 (E1)*1

    C46-25 (N) - C46-81 (E1)*2

    		 R - BR N shift position switch signal

    • Engine switch on (IG)

    • Shift lever in N

    		 11 to 14 V

    • Engine switch on (IG)

    • Shift lever not in N

    		 Below 1 V

    C45-27 (D) - C45-81 (E1)*1

    C46-27 (D) - C46-81 (E1)*2

    		 Y - BR D shift position switch signal

    • Engine switch on (IG)

    • Shift lever in D

    		 11 to 14 V

    • Engine switch on (IG)

    • Shift lever not in D

    		 Below 1 V

    A38-25 (S) - C45-81 (E1)*1

    A52-25 (S) - C46-81 (E1)*2

    		 W - BR S shift position switch signal

    • Engine switch on (IG)

    • Shift lever in S

    		 11 to 14 V

    • Engine switch on (IG)

    • Shift lever not in S

    		 Below 1 V

    A38-38 (SFTU) - C45-81 (E1)*1

    A52-38 (SFTU) - C46-81 (E1)*2

    		 V - BR Up-shift shift position switch signal

    • Engine switch on (IG)

    • Shift lever in S

    		 11 to 14 V

    • Engine switch on (IG)

    • Shift lever "+" position (up-shift)

    		 Below 1 V

    A38-27 (SFTD) - C45-81 (E1)*1

    A52-27 (SFTD) - C46-81 (E1)*2

    		 L - BR Down-shift position switch signal

    • Engine switch on (IG)

    • Shift lever in S

    		 11 to 14 V

    • Engine switch on (IG)

    • Shift lever "-" position (down-shift)

    		 Below 1 V

    A38-36 (STP) - C45-81 (E1)*1

    A52-36 (STP) - C46-81 (E1)*2

    		 R - BR Stop light switch signal Brake pedal depressed 11 to 14 V
    Brake pedal released Below 1.5 V

    C45-7 (S1) - C45-81 (E1)*1

    C46-7 (S1) - C46-81 (E1)*2

    		 R - BR Shift solenoid valve S1 signal 1st gear Below 1 V
    Not in 1st gear 11 to 14 V

    C45-6 (S2) - C45-81 (E1)*1

    C46-6 (S2) - C46-81 (E1)*2

    		 W - BR Shift solenoid valve S2 signal 1st, 2nd or 6th gear 11 to 14 V
    3rd, 4th or 5th gear Below 1 V

    C45-3 (S3) - C45-81 (E1)*1

    C46-3 (S3) - C46-81 (E1)*2

    		 B - BR Shift solenoid valve S3 signal 1st, 2nd or 3rd gear 11 to 14 V
    4th, 5th or 6th gear Below 1 V

    C45-5 (S4) - C45-81 (E1)*1

    C46-5 (S4) - C46-81 (E1)*2

    		 G - BR Shift solenoid valve S4 signal 5th or 6th gear 11 to 14 V
    1st, 2nd, 3rd or 4th gear Below 1 V

    C45-4 (SR) - C45-81 (E1)*1

    C46-4 (SR) - C46-81 (E1)*2

    		 G - BR Shift solenoid valve SR signal 1st, 2nd, 3rd or 4th gear 11 to 14 V
    5th or 6th gear Below 1 V

    C45-14 (SL1+) - C45-15 (SL1-)*1

    C46-14 (SL1+) - C46-15 (SL1-)*2

    		 Y - L Shift solenoid valve SL1 signal 5th or 6th gear Pulse generation

    C45-12 (SL2+) - C45-13 (SL2-)*1

    C46-12 (SL2+) - C46-13 (SL2-)*2

    		 G - L Shift solenoid valve SL2 signal Engine idling Pulse generation

    C45-9 (SLT+) - C45-8 (SLT-)*1

    C46-9 (SLT+) - C46-8 (SLT-)*2

    		 B - G Shift solenoid valve SLT signal Engine idling Pulse generation

    C45-10 (SLU+) - C45-11 (SLU-)*1

    C46-10 (SLU+) - C46-11 (SLU-)*2

    		 L - L Shift solenoid valve SLU signal 5th (lock-up) gear or 6th (lock-up) gear Pulse generation

    C45-122 (THO1) - C45-98 (E2)*1

    C46-122 (THO1) - C46-98 (E2)*2

    		 G - BR No. 1 ATF temperature sensor signal No. 1 ATF temperature: 115°C (239°F) or higher Below 1.5 V

    C45-99 (THO2) - C45-98 (E2)*1

    C46-99 (THO2) - C46-98 (E2)*2

    		 L - BR No. 2 ATF temperature sensor signal No. 2 ATF temperature: 115°C (239°F) or higher Below 1.5 V

    C45-101 (SP2+) - C45-100 (SP2-)*1

    C46-101 (SP2+) - C46-100 (SP2-)*2

    		 Y - B Speed sensor SP2 signal Vehicle speed 20 km/h (12 mph)

    Pulse generation

    (see waveform 1)

    C45-124 (NT+) - C45-123 (NT-)*1

    C46-124 (NT+) - C46-123 (NT-)*2

    		 Y - B Speed sensor NT signal

    Engine idling

    (shift lever in P or N)

    Pulse generation

    (see waveform 2)

    A38-10 (CANH) - C45-81 (E1)*1

    A52-10 (CANH) - C46-81 (E1)*2

    		 V - BR CAN communication line Engine switch on (IG)

    Pulse generation

    (see waveform 3)

    A38-11 (CANL) - C45-81 (E1)*1

    A52-11 (CANL) - C46-81 (E1)*2

    		 W - BR CAN communication line Engine switch on (IG)

    Pulse generation

    (see waveform 4)

    A38-51 (PWR) - C45-81 (E1)*1

    A52-51 (PWR) - C46-81 (E1)*2

    		 GR - BR PWR switch (integration control and panel assembly) signal*4

    • Engine switch on (IG)

    • PWR switch off

    		 11 to 14 V

    • Engine switch on (IG)

    • PWR switch on

    		 Below 1.5 V
    A38-39 (PWMS) - C45-81 (E1)*1 GR - BR SPORT S/S+ switch (integration control and panel assembly) signal*3

    • Engine switch on (IG)

    • SPORT S/S+ switch off

    		 11 to 14 V

    • Engine switch on (IG)

    • SPORT S/S+ switch on

    		 Below 1.5 V
    A38-22 (SPCN) - C45-81 (E1)*1 L - BR NORM switch (integration control and panel assembly) signal*3

    • Engine switch on (IG)

    • NORM switch off

    		 11 to 14 V

    • Engine switch on (IG)

    • NORM switch on

    		 Below 1.5 V

    A38-4 (SNWI) - C45-81 (E1)*1

    A52-4 (SNWI) - C46-81 (E1)*2

    		 P - BR ECT 2nd switch (integration control and panel assembly) signal

    • Engine switch on (IG)

    • ECT 2nd switch off

    		 11 to 14 V

    • Engine switch on (IG)

    • ECT 2nd switch on

    		 Below 1.5 V

    1. A01X09QE01
      *a 2 V/DIV.
      *b 2 msec./DIV.

      Using an oscilloscope, check waveform 1.

      Reference:
      Terminal No. (Symbol) Tool Setting Condition

      C45-101 (SP2+) - C45-100 (SP2-)*1

      C46-101 (SP2+) - C46-100 (SP2-)*2

      		 2 V/DIV., 2 msec./DIV. Vehicle speed 20 km/h (12 mph)
    2. A01X6ZQE01
      *a 1 V/DIV.
      *b 2 msec./DIV.

      Using an oscilloscope, check waveform 2.

      Reference:
      Terminal No. (Symbol) Tool Setting Condition

      C45-124 (NT+) - C45-123 (NT-)*1

      C46-124 (NT+) - C46-123 (NT-)*2

      		 1 V/DIV., 2 msec./DIV. Engine idling (shift lever in P or N)
    3. A01X0LEE01
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      Using an oscilloscope, check waveform 3.

      Reference:
      Terminal No. (Symbol) Tool Setting Condition

      A38-10 (CANH) - C45-81 (E1)*1

      A52-10 (CANH) - C46-81 (E1)*2

      		 1 V/DIV., 10 μsec./DIV. Engine switch on (IG)
    4. A01X0EYE01
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      Using an oscilloscope, check waveform 4.

      Reference:
      Terminal No. (Symbol) Tool Setting Condition

      A38-11 (CANL) - C45-81 (E1)*1

      A52-11 (CANL) - C46-81 (E1)*2

      		 1 V/DIV., 10 μsec./DIV. Engine switch on (IG)