AUTOMATIC TRANSMISSION SYSTEM TERMINALS OF ECM


  1. CHECK ECM

    A01DS2FE01

    Tech Tips

    The standard voltage at 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 inspect. The standard voltage 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
    G60-24 (NSW) - C64-5 (E1) B - BR PNP switch signal

    • Ignition switch ON

    • Shift lever in P or N

    		 Below 1 V

    • Ignition switch ON

    • Shift lever not in P or N

    		 11 to 14 V
    C63-16 (P) - C64-5 (E1) L - BR P shift position switch signal

    • Ignition switch ON

    • Shift lever in P

    		 11 to 14 V

    • Ignition switch ON

    • Shift lever not in P

    		 Below 1 V
    C63-17 (R) - C64-5 (E1) R - BR R shift position switch signal

    • Ignition switch ON

    • Shift lever in R

    		 11 to 14 V

    • Ignition switch ON

    • Shift lever not in R

    		 Below 1 V
    C63-11 (N) - C64-5 (E1) G - BR N shift position switch signal

    • Ignition switch ON

    • Shift lever in N

    		 11 to 14 V

    • Ignition switch ON

    • Shift lever not in N

    		 Below 1 V
    G60-9 (D) - C64-5 (E1) B - BR D shift position switch signal

    • Ignition switch ON

    • Shift lever in D or 3

    		 11 to 14 V

    • Ignition switch ON

    • Shift lever not in D or 3

    		 Below 1 V
    G60-23 (3) - C64-5 (E1) V - BR 3 shift position switch signal

    • Ignition switch ON

    • Shift lever in 3

    		 11 to 14 V

    • Ignition switch ON

    • Shift lever not in 3

    		 Below 1 V
    C63-15 (2) - C64-5 (E1) P - BR 2 shift position switch signal

    • Ignition switch ON

    • Shift lever in 2

    		 11 to 14 V

    • Ignition switch ON

    • Shift lever not in 2

    		 Below 1 V
    C63-25 (L) - C64-5 (E1) W - BR L shift position switch signal

    • Ignition switch ON

    • Shift lever in L

    		 11 to 14 V

    • Ignition switch ON

    • Shift lever not in L

    		 Below 1 V
    C62-21 (S1) - C64-5 (E1) B-W - BR S1 solenoid signal 1st or 2nd gear 11 to 14 V
    3rd or 4th gear Below 1 V
    C62-22 (S2) - C64-5 (E1) B-R - BR S2 solenoid signal 2nd or 3rd gear 11 to 14 V
    1st or 4th gear Below 1 V
    C62-23 (SLT+) - C62-24 (SLT-) G-B - L-B SLT solenoid signal Engine idling Pulse generation
    C63-20 (SLU+) - C63-21 (SLU-) P - LG SLU solenoid signal 3rd gear (lock-up) or 4th gear (lock-up) Pulse generation
    C62-18 (THO1) - C62-17 (ETHO) L - R No. 1 ATF temperature sensor signal No. 1 ATF temperature: 115°C (239°F) or higher Below 1.5 V
    C61-2 (THOC) - C62-16 (E2) W-L - W-R No. 2 ATF temperature sensor signal No. 2 ATF temperature: 115°C (239°F) or higher Below 1.5 V
    C63-2 (SP2+) - C63-9 (SP2-) B - W Speed sensor SP2 signal Vehicle speed 20 km/h (12 mph)

    Pulse generation

    (See waveform 1)
    C63-5 (NCO+) - C63-10 (NCO-) L - W Speed sensor NCO signal

    Engine idling

    (shift lever in P or N)

    Pulse generation

    (See waveform 2)
    G59-14 (L4) - C64-5 (E1) R - BR L4 position signal

    • Ignition switch ON

    • Transfer in L4

    		 Below 1 V

    • Ignition switch ON

    • Transfer not in L4

    		 11 to 14 V
    G60-34 (CANH) - C64-5 (E1) LG - BR CAN communication line Ignition switch ON

    Pulse generation

    (See waveform 3)
    G60-33 (CANL) - C64-5 (E1) W - BR CAN communication line Ignition switch ON

    Pulse generation

    (See waveform 4)
    G60-27 (SNWI) - C64-5 (E1) GR - BR Pattern select (2ND) switch signal

    • Ignition switch ON

    • Pattern select (2ND) switch pushed

    		 Below 1 V

    • Ignition switch ON

    • Pattern select (2ND) switch not pushed

    		 11 to 14 V

    1. A01DTDCE04

      Using an oscilloscope, check waveform 1.

      Reference
      Terminal No. (Symbol) Tool Setting Condition
      C63-2 (SP2+) - C63-9 (SP2-) 2 V/DIV., 20 msec./DIV. Vehicle speed 20 km/h (12 mph)
    2. A01DQS0E03

      Using an oscilloscope, check waveform 2.

      Reference
      Terminal No. (Symbol) Tool Setting Condition
      C63-5 (NCO+) - C63-10 (NCO-) 1 V/DIV., 2 msec./DIV. Engine idling (shift lever in P or N)
    3. A01DQX1E03

      Using an oscilloscope, check waveform 3.

      Reference
      Terminal No. (Symbol) Tool Setting Condition
      G60-34 (CANH) - C64-5 (E1) 1 V/DIV., 10 μsec./DIV. Ignition switch ON
    4. A01DP9UE03

      Using an oscilloscope, check waveform 4.

      Reference
      Terminal No. (Symbol) Tool Setting Condition
      G60-33 (CANL) - C64-5 (E1) 1 V/DIV., 10 μsec./DIV. Ignition switch ON