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Home >> Lexus >> 2007 >> RX 350 AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - U151F >> Automatic Transaxle System >> Terminals Of ECM

Terminals Of ECM

  1. ECM 
    Fig 1: Identifying ECM Connector Terminals
    G05268601Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    Each ECM terminal's standard voltage is shown in the table below.

    In the table, first follow the information under "Condition". Look under "Symbols (Terminal No.)" for the terminals to inspected. The standard voltage between the terminals is shown under "Specific Condition".

    Use the illustration above as a reference for the ECM terminals.

    VOLTAGE SPECIFICATION

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    L(2) (E6-9) - E1 (E7-1) L-BR L shift position switch signal IG switch ON and shift lever L position 10 to 14 V
    IG switch ON and shift lever other than L position Below 1 V
    2(2) (E6-10) - E1 (E7-1) Y-BR 2 shift position switch signal IG switch ON and shift lever 2 and L position 10 to 14 V
    IG switch ON and shift lever other than 2 and L position Below 1 V
    D(1) (E6-21) - E1 (E7-1) B-BR D shift position switch signal IG switch ON and shift lever D and S position 10 to 14 V
    IG switch ON and shift lever other than D and S position Below 1 V
    D(2) (E6-21) - E1 (E7-1) B-BR D shift position switch signal IG switch ON and shift lever D and 4 position 10 to 14 V
    IG switch ON and shift lever other than D and 4 position Below 1 V
    R (E6-11) - E1 (E7-1) G-BR R shift position switch signal IG switch ON and shift lever R position 10 to 14 V
    IG switch ON and shift lever other than R position Below 1 V
    SPD (E6-8) - E1 (E7-1) LG-BR Speed signal Vehicle speed 20 km/h (12 mph) Pulse generation (See  h waveform 8)
    STP (E5-15) - E1 (E7-1) B-BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
    Brake pedal is released Below 1.5 V
    3(2) (E6-19) - E1 (E7-1) SB-BR 3 shift position switch signal IG switch ON and shift lever 3 position 10 to 14 V
    IG switch ON and shift lever other than 3 position Below 1 V
    SFTD(1) (E6-5) - E1 (E7-1) Y - BR Down shift switch signal IG switch ON and shift lever S position 10 to 14 V
    IG switch ON and shift lever "-" position (Down shift) Below 1 V
    SFTU(1) (E6-6) - E1 (E7-1) W - BR Up shift switch signal IG switch ON and shift lever S position 10 to 14 V
    IG switch ON and shift lever "+" position (Up shift) Below 1 V
    4(2) (E6-20) - E1 (E7-1) BR - BR 4 shift position switch signal IG switch ON and shift lever 4 position 10 to 14 V
    IG switch ON and shift lever other than 4 position Below 1 V
    S(1) (E6-20) E1 (E7-1) SB-BR S shift position switch signal IG switch ON and shift lever S position 10 to 14 V
    IG switch ON and shift lever other than S position Below 1 V
    P (E6-23) - E1 (E7-1) L - BR Park position switch signal IG switch ON and shift lever P position 10 to 14 V
    IG switch ON and shift lever other then P position Below 1 V
    N (E6-22) - E1 (E7-1) O - BR Neutral position switch signal IG switch ON and shift lever N position 10 to 14 V
    IG switch ON and shift lever other than N position Below 1 V
    NSW (E9-8) - E1 (E7-1) W - R - BR Park neutral switch signal IG switch ON and shift lever P and N position Below 1 V
    IG switch ON and shift lever other than P and N position 10 to 14 V
    DSL (E9-11) - E1 (E7-1) G-R - BR DSL solenoid signal Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) Pulse generation (See  b waveform 2)
    SR (E9-9) - E1 (E7-1) L-B - BR SR solenoid signal IG switch ON Below 1 V
    3rd, 4th or 5th gear 10 to 14 V
    1st or 2nd gear Below 1 V
    S4 (E9-10) - E1 (E7-1) W-L - BR S4 solenoid signal IG switch ON Below 1 V
    5th gear 10 to 14 V
    Except 5th gear Below 1 V
    SL3+ (E9-17) - SL3- (E9-16) W-B-W SL3 solenoid signal Engine idle speed Pulse generation (See  cwaveform 3)
    SL2+ (E9-15) - SL2- (E9-14) Y - L SL2 solenoid signal Engine idle speed Pulse generation (See  d waveform 4)
    SL1+ (E9-19) - SL1- (E9-18) G - P SL1 solenoid signal Engine idle speed Pulse generation (See  e waveform 5)
    NC+ (E9-34) - NC- (E9-26) L-B - G-R Speed sensor (NC) signal Vehicle speed 30 km/h (19 mph): (3rd gear) Engine speed 1,400 RPM Pulse generation (See  f waveform 6)
    NT+ (E9-35) - NT- (E9-27) W-L - L Speed sensor (NT) signal Vehicle speed 20 km/h (12 mph) Pulse generation (See  gwaveform 7)
    SLT+ (E9-13) - SLT- (E9-12) R - G SLT solenoid signal Engine idle speed Pulse generation (See  awaveform 1)
    THO1 (E9-24) - E2 (E8-28) W-R - L ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V
    (1) Shift lever with Multi-mode automatic transmission type
    (2) Except*1 (Gate shift lever type)
    1. Waveform 1

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 1)

      Terminal SLT+ - SLT-
      Tool setting 5 V/DIV, 1 ms/DIV
      Vehicle condition Engine idle speed
      Fig 2: Waveform Graph (Waveform 1)
      G04975834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Waveform 2

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 2)

      Terminal DSL-E1
      Tool setting 10 V/DIV, 100 ms/DIV
      Vehicle condition Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF)
      Fig 3: Waveform Graph (Waveform 2)
      G05271730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Waveform 3

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 3)

      Terminal SL3+ - SL3-
      Tool setting 5 V/DIV, 1 ms/DIV
      Vehicle condition Engine idle speed
      Fig 4: Waveform Graph (Waveform 3)
      G05138474Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Waveform 4

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 4)

      Terminal SL2+ - SL2-
      Tool setting 5 V/DIV, 1 ms/DIV
      Vehicle condition Engine idle speed
      Fig 5: Waveform Graph (Waveform 4)
      G04975834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Waveform 5

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 5)

      Terminal SL1 +- SL1-
      Tool setting 5 V/DIV, 1 ms/DIV
      Vehicle condition Engine idle speed
      Fig 6: Waveform Graph (Waveform 5)
      G05136944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Waveform 6

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 6)

      Terminal NC+ - NC-
      Tool setting 1 V/DIV, 1 ms/DIV
      Vehicle condition Vehicle speed 30 km/h (19 mph): (3rd gear) Engine speed 1.400 RPM
      Fig 7: Waveform Graph (Waveform 6)
      G04975884Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Waveform 7

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 7)

      Terminal NT+ - NT-
      Tool setting 5 V/DIV, 0.5 ms/DIV
      Vehicle condition Vehicle speed 20 km/h (12 mph)
      Fig 8: Waveform Graph (Waveform 7)
      G04975861Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Waveform 8

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 8)

      Terminal SPD - E1
      Tool setting 5 V/DIV, 20ms/DIV
      Vehicle condition Vehicle speed 20 km/h (12 mph)
      Fig 9: Waveform Graph (Waveform 8)
      G05271736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Instrument Panel Junction Block Assembly (Multiplex Network Body ECU) 
    Fig 10: Identifying Instrument Panel Junction Block Assembly Connector Terminals
    G05271737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    VOLTAGE SPECIFICATION

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    SNOW (B5-17) - Body ground O- - ECT SNOW switch signal IG switch ON 10 to 14 V
    IG switch ON and Press continuously ECT SNOW switch Below 1 V
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