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Terminals Of Ecu

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  1. CHECK MAIN BODY ECU (INSTRUMENT PANEL J/B) 
    Fig 1: Identifying Main Body ECU Connectors Terminals
    G05252291Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the DA, DD, DF and E59 J/B connectors.
    2. Measure the voltage and resistance between the specified terminals of the wire harness side connectors and body ground.

      Standard voltage 

      TERMINALS REFERENCE

      Symbols Wiring Color Terminal Description Condition Specified Condition
      BATB (DA-1) - Body ground W - Body ground Battery power supply Always 10 to 14 V
      ALTB (DD-16) - Body ground W - Body ground Generator power supply Always 10 to 14 V

      Standard resistance 

      TERMINALS REFERENCE

      Symbols Wiring Color Terminal Description Condition Specified Condition
      GND1 (DF-10) - Body ground W-B - Body ground Ground Always Below 1 Ω
      GND3 (E59-1) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the DA, DD, DF, and E59 J/B connectors.
    4. Measure the resistance and voltage between the specified terminals of the J/B connectors and body ground.

      Standard resistance 

      TERMINALS REFERENCE

      Symbols Wiring Color Terminal Description Condition Specified Condition
      CLTE (E60-18) - Body ground W - Body ground Automatic light control sensor ground Always Below 1 Ω

      Standard voltage 

      TERMINALS REFERENCE

      Symbols Wiring Color Terminal Description Condition Specified Condition
      PKB (DC-14) - Body ground L - Body ground Parking brake switch input Parking brake switch ON Below 1 V
      Parking brake switch OFF 10 to 14 V
      HRLY (DD-3) - Body ground P - Body ground Headlight relay drive output Light control switch in HEAD Below 1 V
      Light control switch not in HEAD 10 to 14 V
      DRL (DD-9) - Body ground V - Body ground High beam headlights drive output High beam headlights ON Below 1 V
      High beam headlights OFF 10 to 14 V
      HU (DG-5) - Body ground W - Body ground Dimmer switch HIGH input Dimmer switch in HIGH or HIGH FLASH 10 to 14 V
      Dimmer switch in LOW Below 1 V
      LCTY (DO-7) - Body ground B - Body ground Rear left door courtesy switch input Rear left door open Below 1 V
      Rear left door closed 10 to 14 V
      LSWL (DP-5) - Body ground GR - Body ground Rear left door lock position switch input Rear left door locked 10 to 14 V
      Rear left door unlocked Below 1 V
      ILE (DR-5) - Body ground BR - Body ground Interior light and seat illumination drive output Interior light and seat illumination OFF 10 to 14 V
      Interior light and seat illumination ON Below 1 V
      CANH (E59-5) - Body ground BR - Body ground Control system CAN communication Engine switch on (IG) Pulse generation
      Engine switch off Below 1 V
      CANL (E59-6) - Body ground GR - Body ground Control system CAN communication Engine switch on (IG) Pulse generation
      Engine switch off Below 1 V
      CANN (E59-15) - Body ground W - Body ground Body system CAN communication Engine switch on (IG) Pulse generation
      Engine switch off Below 1 V
      CANP (E59-16) - Body ground B - Body ground Body system CAN communication Engine switch on (IG) Pulse generation
      Engine switch off Below 1 V
      FSPT (E59-11) - Body ground BR - Body ground Footwell illumination drive output Footwell illumination OFF 10 to 14 V
      Footwell illumination ON Below 1 V
      HEAD (E60-17) - Body ground L - Body ground Light control switch HEAD input Light control switch in HEAD Below 1 V
      Light control switch not in HEAD 10 to 14 V
      CLTS (E60-19) - Body ground LG - Body ground Automatic light control sensor signal input Engine switch off Below 1 V
      Automatic light control system operates Pulse generation (See  1waveform 1)
      CLTB (E60-20) - Body ground BR - Body ground Automatic light control sensor power supply output Engine switch off Below 1 V
      Engine switch on (IG) and light control switch in AUTO 10 to 14 V
      PCTY (E60-21) - Body ground G - Body ground Passenger side door courtesy switch input Passenger side door open Below 1 V
      Passenger side door closed 10 to 14 V
      LGCY (E60-25) - Body ground W - Body ground Luggage courtesy switch input Luggage compartment door open Below 1 V
      Luggage compartment door closed 10 to 14 V
      LSWP (E60-27) - Body ground LG - Body ground Passenger side door lock position switch input Passenger side door locked 10 to 14 V
      Passenger side door unlocked Below 1 V
      FFOG (E60-28) - Body ground GR - Body ground Front fog light switch input Front fog light switch ON Below 1 V
      Front fog light switch OFF 10 to 14 V
      LSWR (E60-5) - Body ground Y - Body ground Rear right door lock position switch input Rear right door locked 10 to 14 V
      Rear right door unlocked Below 1 V
      RCTY (E60-7) - Body ground GR - Body ground Rear right door courtesy switch input Rear right door open Below 1 V
      Rear right door closed 10 to 14 V
      HF (E61-13) - Body ground R - Body ground Dimmer switch HIGH FLASH signal input Dimmer switch in HIGH FLASH position Below 1 V
      Dimmer switch not in HIGH FLASH position 10 to 14 V
      SSW2 (E61-16) - Body ground V - Body ground Engine switch input Engine switch pushed Below 1 V
      Engine switch not pushed 10 to 14 V
      SSW1 (E61-17) - Body ground L - Body ground Engine switch input Engine switch on (IG) 10 to 14 V
      Engine switch off Below 1 V
      A (E61-21) - Body ground Y - Body ground Light control switch AUTO signal input Light control switch in AUTO Below 1 V
      Light control switch not in AUTO 10 to 14 V
      ACCD (E61-22) - Body ground R - Body ground Accessory relay drive output Engine switch on (ACC) Below 1 V
      Engine switch off 10 to 14 V
      TAIL (E61-23) - Body ground B - Body ground Light control switch TAIL signal input Light control switch in TAIL or HEAD Below 1 V
      Light control switch in neither TAIL nor HEAD 10 to 14 V
      DCTY (E61-24) - Body ground GR - Body ground Driver side door courtesy switch input Driver side door open Below 1 V
      Driver side door closed 10 to 14 V
      IG1D (E61-3) - Body ground LG - Body ground Ignition 1 relay drive output Engine switch on (IG) Below 1 V
      Engine switch off 10 to 14 V
      FFGO (E61-4) - Body ground G - Body ground Front fog light relay drive output Light control switch in HEAD and front fog light switch ON Below 1 V
      Front fog light switch OFF 10 to 14 V
      LSWD (E61-9) - Body ground L - Body ground Driver side door lock position switch input Driver side door locked 10 to 14 V
      Driver side door unlocked Below 1 V
      SWIL (E61-25) - Body ground R - Body ground Engine switch illumination drive output Engine switch illumination ON 10 to 14 V
      Engine switch illumination OFF Below 1 V

      If the result is not as specified, the main body ECU (instrument panel J/B) may have a malfunction.

      1. Waveform 1
        WAVEFORM REFERENCE

        Item Contents
        Tool setting 5 V/DIV., 5 ms./DIV.
        Fig 2: Identifying Waveform 1
        G04980053Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT:

        If the ambient light becomes brighter, width A becomes narrower.

  2. CHECK AFS ECU 
    1. Disconnect the A22 ECU connector.
      Fig 3: Identifying A22 ECU Connector Terminals
      G05252293Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance between the specified terminals of the wire harness side connectors and body ground.

      Standard voltage 

      TERMINALS REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      IGS (A22-14) - Body ground Y - Body ground Swivel motor power supply Engine switch off Below 1 V
      Engine switch on (IG) 10 to 14 V
      IG (A22-15) - Body ground GR - Body ground AFS ECU power supply Engine switch off Below 1 V
      Engine switch on (IG) 10 to 14 V

      Standard resistance 

      TERMINALS REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      E1 (A22-22) - Body ground W - Body ground AFS ECU ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the A22 ECU connector.
    4. Measure the resistance and voltage according to the value(s) in the table below.

      Standard resistance 

      TERMINALS REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      SGR (A22-21) - E1 (A22-22) O - W Rear height control sensor ground Always Below 1 Ω
      SMGL (A22-23) - E1 (A22-22) G - W Swivel motor LH ground Always Below 1 Ω
      SMGR (A22-24) - E1 (A22-22) P - W Swivel motor RH ground Always Below 1 Ω
      LH- (A22-27) - E1 (A22-22) GR - W Leveling motor LH ground Always Below 1 Ω
      RH- (A22-28) - E1 (A22-22) V - W Leveling motor RH ground Always Below 1 Ω

      Standard voltage 

      TERMINALS REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      SMBL (A22-1) - E1 (A22-22) L - W Swivel motor LH power supply Engine switch off Below 1 V
      Engine switch on (IG) 10 to 14 V
      SMBR (A22-2) - E1 (A22-22) G - W Swivel motor RH power supply Engine switch off Below 1 V
      Engine switch on (IG) 10 to 14 V
      LHT (A22-3) - E1 (A22-22) Y - W Leveling motor LH power supply Engine switch off Below 1 V
      Engine switch on (IG) 10 to 16 V
      RHT (A22-4) - E1 (A22-22) R - W Leveling motor RH power supply Engine switch off Below 1 V
      Engine switch on (IG) 10 to 14 V
      INIT (A22-7) - E1 (A22-22) L - W Initialization signal Terminal LVL and terminal GND of DLC3 connected Below 1 V
      Terminal LVL and terminal GND of DLC3 not connected 10 to 14 V
      SMR (A22-10) - E1 (A22-22) L - W Swivel motor RH LIN communication Engine switch off Below 1 V
      Engine switch on (IG) Pulse generation
      RH+ (A22-11) - E1 (A22-22) LG - W Leveling motor RH LIN communication Engine switch off Below 1 V
      Engine switch on (IG) Pulse generation
      MPX1 (A22-12) - E1 (A22-22) L - W CAN communication Engine switch off Below 1 V
      Engine switch on (IG) Pulse generation
      MPX2 (A22-13) - E1 (A22-22) Y - W CAN communication Engine switch off Below 1 V
      Engine switch on (IG) Pulse generation
      SHRL (A22-19) - SGR (A22-21) P - O Rear height control sensor signal Engine switch off Below 1 V
      Engine switch on (IG) 0 V to 4.5 V
      SML (A22-29) - E1 (A22-22) R - W Swivel motor LH LIN communication Engine switch off Below 1 V
      Engine switch on (IG) Pulse generation
      LH+ (A22-30) - E1 (A22-22) W - W Leveling motor LH LIN communication Engine switch off Below 1 V
      Engine switch on (IG) Pulse generation
      MSW (A22-32) - E1 (A22-22) BR - W AFS OFF switch signal Engine switch on (IG), AFS OFF switch OFF (not pushed) 10 to 14 V
      Engine switch on (IG), AFS OFF switch ON (pushed) Below 1 V

      If the result is not as specified, the ECU may have a malfunction.

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