AUTOMATIC TRANSMISSION SYSTEM TERMINALS OF ECM


  1. CHECK ECM

    A01BC1ME32

    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
    B71-25 (NSW) - D97-105 (E1) B - W-B PNP switch signal

    • Ignition switch ON

    • Shift lever in P or N

    		 11 to 14 V

    • Ignition switch ON

    • Shift lever not in P or N

    		 Below 1 V
    D97-17 (P) - D97-105 (E1) W - W-B 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
    D97-76 (R) - D97-105 (E1) L - W-B 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
    D97-99 (N) - D97-105 (E1) GR - W-B 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
    B71-47 (D) - D97-105 (E1) R - W-B 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
    D97-79 (3) - D97-105 (E1) B - W-B 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
    D97-78 (2) - D97-105 (E1) Y - W-B 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
    D97-39 (L) - D97-105 (E1) R - W-B 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
    D97-56 (S1) - D97-105 (E1) LG - W-B S1 solenoid signal 1st or 2nd gear 11 to 14 V
    3rd or 4th gear Below 1 V
    D97-55 (S2) - D97-105 (E1) P - W-B S2 solenoid signal 2nd or 3rd gear 11 to 14 V
    1st or 4th gear Below 1 V
    D97-54 (SLT+) - D97-53 (SLT-) L - W SLT solenoid signal Engine idling Pulse generation
    D97-61 (SL) - D97-105 (E1) GR - W-B SL solenoid signal Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF)

    Pulse generation

    (See waveform 1)
    D97-114 (THOC) - D97-72 (E2) B - Y ATF temperature sensor signal ATF temperature: 115°C (239°F) or higher Below 1.5 V
    D97-125 (SP2+) - D97-101 (SP2-) G - R Speed sensor SP2 signal Vehicle speed 20 km/h (12 mph)

    Pulse generation

    (See waveform 2)
    D97-122 (NC0+) - D97-100 (NC0-) Y - L Speed sensor NC0 signal Engine idling

    Pulse generation

    (See waveform 3)

    1. A01BGXRE02

      Using an oscilloscope, check waveform 1.

      Reference
      Terminal No. (Symbol) Tool Setting Condition
      D97-61 (SL) - D97-105 (E1) 10 V/DIV., 100 msec./DIV. Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF)
    2. A01BDFYE01

      Using an oscilloscope, check waveform 2.

      Reference
      Terminal No. (Symbol) Tool Setting Condition
      D97-125 (SP2+) - D97-101 (SP2-) 2 V/DIV., 20 msec./DIV. Vehicle speed 20 km/h (12 mph)
    3. A01BCUKE01

      Using an oscilloscope, check waveform 3.

      Reference
      Terminal No. (Symbol) Tool Setting Condition
      D97-122 (NC0+) - D97-100 (NC0-) 1 V/DIV., 2 msec./DIV. Engine idling