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Terminals Of ECM

WARNING: This page is about a different variant/trim than selected.
  1. CHECK ECM 
    Fig 1: ECM Connector Terminals Identification (SFI System)
    GTY159011Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage of the ECM connector.

      HINT: 

      Each ECM terminal's 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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A36-16 (SFTU) - B33-104 (E1) W-L - BR Up-shift position switch signal
      • Ignition switch ON
      • Shift lever in S
      		 11 to 14 V
      • Ignition switch ON
      • Shift lever "+" position (up-shift)
      		 Below 1 V
      A36-36 (STP) - B33-104 (E1) L - BR Stop light switch signal Brake pedal depressed 7.5 to 14 V
      Brake pedal released Below 1 V
      A36-48 (STA) - B33-104 (E1) LG -BR Park/Neutral position switch signal Cranking 6.0 V or more
      A36-51 (SFTD) - B33-104 (E1) R - BR Down-shift position switch signal
      • Ignition switch ON
      • Shift lever in S
      		 11 to 14 V
      • Ignition switch ON
      • Shift lever "-" position (down-shift)
      		 Below 1 V
      B33-52 (NSW) - B33-104 (E1) W - BR Park/Neutral position switch signal
      • Ignition switch ON
      • Shift lever in P or N
      		 Below 2 V
      • Ignition switch ON
      • Shift lever not in P or N
      		 11 to 14 V
      B33-53 (R) - B33-104 (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
      B33-54 (N) - B33-104 (E1) B - 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
      B33-56 (D) - B33-104 (E1) P - BR D shift position switch signal
      • Ignition switch ON
      • Shift lever in D
      		 11 to 14 V
      • Ignition switch ON
      • Shift lever not in D
      		 Below 1 V
      B33-57 (SL1+) - B33-77 (SL1-) G - P SL1 solenoid signal Engine idle speed Pulse generation
      (See waveform 1)
      Ignition switch ON Pulse generation
      (See waveform 1)
      1st gear Pulse generation
      (See waveform 1)
      Not in 1st gear Below 1 V
      B33-58 (SL2+) - B33-59 (SL2-) Y - R SL2 solenoid signal Engine idle speed Pulse generation
      (See waveform 2)
      Ignition switch ON Pulse generation
      (See waveform 2)
      1st or 2nd gear Pulse generation
      (See waveform 2)
      3rd or 4th gear Below 1 V
      B33-72 (THO1) - B33-95 (ETHO) LG - BR ATF temperature sensor signal ATF temperature 115°C (239°F) or more Below 1.5 V
      B33-73 (P) - B33-104 (E1) V - 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
      B33-74 (S) - B33-104 (E1) L - BR S shift position switch signal
      • Ignition switch ON
      • Shift lever in S
      		 11 to 14 V
      • Ignition switch ON
      • Shift lever not in S
      		 Below 1 V
      B33-76 (SLT+) - B33-75 (SLT-) R - GR SLT solenoid signal Engine idle speed Pulse generation
      B33-78 (S4) - B33-104 (E1) W - BR S4 solenoid signal Ignition switch ON Below 1 V
      4th gear 11 to 14 V
      Not in 4th gear Below 1 V
      B33-79 (DSL) - B33-104 (E1) G - BR DSL solenoid signal Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) Below 1 V
      Vehicle driving under lock-up position Pulse generation
      (See waveform 3)
      B33-101 (NC+) - B33-102 (NC-) R - W Speed sensor NC signal Vehicle speed 30 km/h (19 mph): (3rd gear)
      Engine speed 1400 rpm      		 Pulse generation
      (See waveform 4)
      B33-125 (NT+) - B33-124 (NT-) W - L Speed sensor NT signal Vehicle speed 20 km/h (12 mph) Pulse generation
      (See waveform 5)
    2. Using an oscilloscope, check the waveform 1.
      Fig 2: Identifying Waveform 1
      GTY156956Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 1

      Terminal SL1+ - SL1-
      Tool Setting 5 V/DIV., 1 msec./DIV.
      Condition Engine idle speed
    3. Using an oscilloscope, check the waveform 2.
      Fig 3: Identifying Waveform 2
      GTY156956Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 2

      Terminal SL2+ - SL2-
      Tool Setting 5 V/DIV., 1 msec./DIV.
      Condition Engine idle speed
    4. Using an oscilloscope, check the waveform 3.
      Fig 4: Voltage Waveform 3
      GTY165788Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 3

      Terminal DSL - E1
      Tool Setting 10 V/DIV., 100 msec./DIV.
      Condition Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF)
    5. Using an oscilloscope, check the waveform 4.
      Fig 5: Identifying Waveform 4
      GTY167105Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 4

      Terminal NC+ - NC-
      Tool Setting 1 V/DIV., 1 msec./DIV.
      Condition Vehicle speed 30 km/h (19 mph): (3rd gear)
      Engine speed 1400 rpm
    6. Using an oscilloscope, check the waveform 5.
      Fig 6: Identifying Waveform 5
      GTY159461Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 5

      Terminal NT+ - NT-
      Tool Setting 5 V/DIV., 0.5 msec./DIV.
      Condition Vehicle speed 20 km/h (12 mph)
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