LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2008 >> Camry Base, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting (Except Hybrid) >> Lighting System >> Terminals Of Ecu

Terminals Of Ecu

  1. CHECK MAIN BODY ECU (INSTRUMENT PANEL J/B) 
    Fig 1: Identifying Main Body ECU Connector Terminal
    G04980052Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the IA, ID, IF and IM J/B connectors.
    2. Measure the voltage and resistance between the specified terminals of the wire harness side connectors and body ground.

      Standard voltage 

      VOLTAGE SPECIFICATION

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

      Standard resistance 

      RESISTANCE REFERENCE

      Symbols Wiring Color Terminal Description Condition Specified Condition
      GND1 (IF-10) - Body ground W-B - Body ground Ground Always Below 1 Ω
      GND2 (IM-9) - 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 IA, ID, IF, and IM J/B connectors.
    4. Measure the resistance and voltage between the specified terminals of the J/B connectors and body ground.

      Standard resistance 

      RESISTANCE REFERENCE

      Symbols Wiring Color Terminal Description Condition Specified Condition
      CLTE (E6-18) - Body ground BR - Body ground Automatic light control ground Always Below 1 Ω

      Standard voltage 

      VOLTAGE SPECIFICATION

      Symbols Wiring Color Terminal Description Condition Specified Condition
      PKB (IC-14) - Body ground (*3) L - Body ground Parking brake switch input Parking brake switch ON Below 1 V
      Parking brake switch OFF 10 to 14 V
      HRLY (ID-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 (ID-9) - Body ground V - Body ground High beam headlights drive output Dimmer switch in HIGH or HIGH FLASH Below 1 V
      Dimmer switch in LOW 10 to 14 V
      HU (IG-5) - Body ground LG - Body ground Dimmer switch HIGH input Dimmer switch in HIGH or HIGH FLASH 10 to 14 V
      Dimmer switch in LOW Below 1 V
      ILE (II-10) - Body ground (*2) BR - Body ground Interior light and ignition key cylinder light drive output Interior light and ignition key cylinder light ON Below 1 V
      Interior light and ignition key cylinder light OFF 10 to 14 V
      PKB (IM-2) - Body ground (*4) Y - Body ground Parking brake switch input Parking brake switch ON Below 1 V
      Parking brake switch OFF (Released) 10 to 14 V
      LCTY (IO-7) - Body ground LG - Body ground Rear left door courtesy switch input Rear left door open Below 1 V
      Rear left door closed 10 to 14 V
      LSR (IP-5) - Body ground (*2, *5) 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
      LSWL (IP-5) - Body ground (*1, *5) 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
      HEAD (E6-17)- Body ground P - 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 (E6-19) - Body ground G - Body ground Automatic light control sensor signal input Ignition switch off Below 1 V
      Automatic light control system operates Pulse generation (See  1waveform 1)
      CLTB (E6-20) - Body ground B - Body ground Automatic light control sensor power supply output Ignition switch off Below 1 V
      Ignition switch on (IG) and light control switch in AUTO 10 to 14 V
      PCTY (E6-21) - Body ground Y - Body ground Passenger side door courtesy switch input Passenger side door open Below 1 V
      Passenger side door closed 10 to 14 V
      LGCY (E6-25) - 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 (E6-27) - 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 (E6-28) - Body ground V - 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 (E6-5) - Body ground (*1, *5) V - 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 (E6-5) - Body ground (*2) GR - Body ground Rear right door courtesy switch input Rear right door open Below 1 V
      Rear right door closed 10 to 14 V
      RCTY (E6-7) - Body ground (*1) 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 (E7-13) - 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 (E7-16) - Body ground (*1) V - Body ground Engine switch input Engine switch not pushed 10 to 14 V
      Engine switch pushed Below 1 V
      SSW1 (E7-17) - Body ground (*1) L - Body ground Engine switch input Engine switch not pushed 10 to 14 V
      Engine switch pushed Below 1 V
      A (E7-21) - Body ground G - 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 (E7-22) - Body ground (*1) W - Body ground Accessory relay drive output Ignition switch on (ACC) Below 1 V
      Ignition switch off 10 to 14 V
      TAIL (E7-23) - 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 (E7-24) - Body ground L - Body ground Driver side door courtesy switch input Driver side door open Below 1 V
      Driver side door closed 10 to 14 V
      IG1D (E7-3) - Body ground (*1) P - Body ground Ignition 1 relay drive output Ignition switch on (IG) Below 1 V
      Ignition switch off 10 to 14 V
      FFGO (E7-4) - Body ground R - 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 (E7-9) - 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
      CANH (E8-5) - Body ground B - Body ground Control system CAN communication Ignition switch on (IG) Pulse generation
      Ignition switch off Below 1 V
      CANL (E8-6) - Body ground W - Body ground Control system CAN communication Ignition switch on (IG) Pulse generation
      Ignition switch off Below 1 V
      HINT:
      *1: with smart key system
      *2: without smart key system
      *3: Pedal type parking brake
      *4: Lever type parking brake
      *5: with Theft Deterrent

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

      1. Waveform 1
        WAVEFORM 1 REFERENCE

        Item Contents
        Tool setting 5 V/DIV., 5 ms./DIV.

        HINT:

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

        Fig 2: Waveform 1 Graph
        G04980053Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About LEMON Manuals