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Terminals Of Ecu

  1. CHECK DISPLAY AND NAVIGATION MODULE DISPLAY*1, MULTI-DISPLAY*2 
    • *1: w/ Navigation System
    • *2: w/o Navigation System
      Fig 1: Identifying Terminals Of ECU
      G05762744Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F28 display connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F28-1 (+B1) - F28-10 (GND1) R - W-B Battery Always 11 to 14 V
      F28-2 (ACC) - F28-10 (GND1) GR - W-B Accessory (ON) Engine switch off Below 1 V
      F28-2 (ACC) - F28-10 (GND1) GR - W-B Accessory (ON) Engine switch on (ACC) 11 to 14 V
      F28-3 (IG) - F28-10 (GND1) G - W-B Ignition (ON) Engine switch off Below 1 V
      F28-3 (IG) - F28-10 (GND1) G - W-B Ignition (ON) Engine switch on (IG) 11 to 14 V
      F28-10 (GND1) - 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 F28 display connector.
    4. Measure the voltage according to the value (s) in the table below.
      TERMINAL DESCRIPTION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F27-1 (TX-) - F28-10 (GND1) L - B-W AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F27-2 (TX+) - F28-10 (GND1) W - B-W AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F27-3 (TX2-) - F28-10 (GND1) L - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F27-4 (TX2+) - F28-10 (GND1) W - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F27-5 (TSW-) - F28-10 (GND1) BR - W-B Telephone relation switch signal Always Below 1 V
      F27-9 (MACC) - F28-10 (GND1)(1) Y - W-B Microphone amplifier power supply Engine switch off Below 1 V
      F27-9 (MACC) - F28-10 (GND1)(1) Y - W-B Microphone amplifier power supply Engine switch on (IG) 5V
      F27-10 (MIN-) - F28-10 (GND1) R - W-B Microphone voice signal See "Mic & Voice Recognition Check" (See OPERATION CHECK ) -
      F27-11 (MIN+) - F28-10 (GND1) G - W-B Microphone voice signal See "Mic & Voice Recognition Check" (See OPERATION CHECK ) -
      F27-12 (SGND) - F28-10 (GND1) BR - W-B Signal ground Always Below 1 V
      F27-13 (CA+) - F28-10 (GND1)(2) B - W-B Television camera power supply Engine switch on (IG), shift lever moved to R 5.8 to 6.5 V
      F27-14 (CGND) - Body ground(2) W - Body ground Ground Always Below 1 V
      F27-21 (IVO-) - F28-10 (GND1) B - W-B Voice guidance signal Voice guidance provided Waveform synchronized with sounds is output
      F27-22 (IVO+) - F28-10 (GND1) W - W-B Voice guidance signal Voice guidance provided Waveform synchronized with sounds is output
      F27-23 (SLD) - F28-10 (GND1) Shielded - W-B Shielded ground Always Below 1 V
      F27-27 (V+) - F27-14 (CGND)(2) R - W Television camera image signal Engine switch on (IG), shift lever moved to R Pulse generation (refer to  ewaveform 1)
      F27-28 (V-) - F27-14 (CGND)(2) Shielded - W Shielded ground Always Below 1 V
      F28-5 (HILL) - F28-10 (GND1) W - W-B Illumination signal Light control switch off Below 1 V
      F28-5 (HILL) - F28-10 (GND1) W - W-B Illumination signal Light control switch on 11 to 14 V
      F28-7 (TC) - F28-10 (GND1) V - W-B Diagnosis ON signal Engine switch on (IG) 9 to 14 V
      F28-8 (HAZ) - F28-10 (GND1) O - W-B Hazard warning signal Hazard warning switch off Below 1 V
      Hazard warning switch on 11 to 14 V
      F28-9 (ARON) - F28-10 (GND1) W - W-B Front passenger side airbag ON/OFF indicator signal Passenger airbag ON/OFF indicator off Below 2 V
      Passenger airbag ON/OFF indicator on 11 to 14 V
      F28-12 (ILL+) - F28-10 (GND1) G - W-B Illumination signal Light control switch off Below 1 V
      F28-12 (ILL+) - F28-10 (GND1) G - W-B Illumination signal Light control switch on 11 to 14 V
      F28-13 (REV) - F28-10 (GND1) L - W-B Reverse signal See "Vehicle Signal Check" Mode (See OPERATION CHECK ) -
      F28-14 (SPD) - F28-10 (GND1) V - W-B Speed signal from combination meter See "Vehicle Signal Check" Mode (See OPERATION CHECK ) -
      F28-20 (AIR) - F28-10 (GND1) B - W-B Front passenger side airbag ON/OFF indicator signal Passenger airbag ON/OFF indicator off Below 2 V
      Passenger airbag ON/OFF indicator on 10.5 to 16 V
      F28-21 (PBEW) - F28-10 (GND1) Y - W-B Passenger seat belt signal Passenger seat occupied, seat belt fastened 11 to 14 V
      Passenger seat occupied, seat belt unfastened Below 2 V
      F28-23 (PKB) - F28-10 (GND1) Y - W-B Parking brake signal See "Vehicle Signal Check" Mode (See OPERATION CHECK ) -
      F28-24 (HFOF) - F28-10 (GND1) B - W-B Phone mute Engine switch on (IG) 3.3 to 5.0 V
      F29-1 (VV+) - F28-10 (GND1) W - W-B DVD image signal DVD played on radio receiver Pulse generation (refer to  fwaveform 2)
      F29-4 (VV-) - F28-10 (GND1) B - W-B Signal ground Always Below 1 V
      F34-1 (FR+) - F28-10 (GND1)(3), (4), (5) B - W-B Sound signal (right) Engine switch on (ACC), audio system playing Waveform synchronized with sounds is output
      F34-2 (FR-) - F28-10 (GND1)(3), (4), (5) W - W-B Sound signal (right) Engine switch on (ACC), audio system playing Waveform synchronized with sounds is output
      F34-3 (FL+) - F28-10 (GND1)(3), (4), (5) L - W-B Sound signal (left) Engine switch on (ACC), audio system playing Waveform synchronized with sounds is output
      F34-4 (FL-) - F28-10 (GND1)(3), (4), (5) R - W-B Sound signal (left) Engine switch on (ACC), audio system playing Waveform synchronized with sounds is output
      F34-5 (SLD1) - F28-10 (GND1)(3), (4), (5) Shielded - W-B Shielded ground Always Below 1 V
      F34-7 (MUT2) - F28-10 (GND1)(3), (5) B - W-B Mute signal Sound library playing → Changing mode 3.5 V or higher → Below 1 V
      F34-8 (MUTE) - F28-10 (GND1)(3), (4), (5) G - W-B Mute signal Sound library playing → Changing mode 3.5 V or higher → Below 1 V
      F34-9 (RL-) - F28-10 (GND1)(3), (5) G - W-B Sound signal (right) Engine switch on (ACC), audio system playing Waveform synchronized with sounds is output
      F34-10 (RL+) - F28-10 (GND1)(3), (5) R - W-B Sound signal (right) Engine switch on (ACC), audio system playing Waveform synchronized with sounds is output
      F34-11 (RR-) - F28-10 (GND1)(3), (5) W - W-B Sound signal (left) Engine switch on (ACC), audio system playing Waveform synchronized with sounds is output
      F34-12 (RR+) - F28-10 (GND1)(3), (5) B - W-B Sound signal (left) Engine switch on (ACC), audio system playing Waveform synchronized with sounds is output
      F34-13 (SGD2) - F28-10 (GND1)(3), (5) Shielded - W-B Shielded ground Always Below 1 V
      F35-2 (TXO+) - F28-10 (GND1)(5) B - B-W AVC-LAN plus communication signal Engine switch on (ACC) -
      F35-3 (TXI+) - F28-10 (GND1)(5) B - B-W AVC-LAN plus communication signal Engine switch on (ACC) -
      F35-5 (TXO-) - F28-10 (GND1)(5) W - B-W AVC-LAN plus communication signal Engine switch on (ACC) -
      F35-6 (TXI-) - F28-10 (GND1)(5) W - B-W AVC-LAN plus communication signal Engine switch on (ACC) -
      F40-1 (GVIF) - F28-10 (GND1)(2) B - B-W Digital image signal - -
      F42-1 (GVIF) - F28-10 (GND1)(3), (5) B - B-W Digital image signal - -
      F46-1 (IEEE) - F28-10 (GND1)(5) B - W-B IEEE signal Engine switch on (ACC)  
      (1) w/o LEXUS Link System
      (2) w/ Wide View Front and Side Monitor System
      (3) for DVD Changer Models
      (4) w/ SDARS System
      (5) w/ Navigation System

      If the result is not as specified, the display and navigation module display or multi-display may have a malfunction.

    5. Using an oscilloscope, check waveform 1.

      Waveform 1 (reference) 

      WAVEFORM 1 (REFERENCE)

      Item Content
      Terminal No. (Symbol) F27-27 (V+) - F27-14 (CGND)
      Tool Setting 0.2 V/DIV., 0.2 μs/DIV.
      Condition Engine switch on (IG), shift lever moved to R
      Fig 2: Waveform 1 Graph
      G04945285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Using an oscilloscope, check waveform 2.

      Waveform 2 (reference) 

      WAVEFORM 2 (REFERENCE)

      Item Content
      Terminal No. (Symbol) F29-1 (VV+) - F28-10 (GND1)
      Tool Setting 0.2 V/DIV., 0.2 μs/DIV.
      Condition Disc played on radio receiver
      Fig 3: Waveform 2 Graph
      G05762746Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CHECK RADIO RECEIVER (for DVD Changer Models) 
    Fig 4: Identifying Radio Receiver Connector Terminals
    G05762747Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F1 receiver connector.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      TERMINAL DESCRIPTION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F1-1 (B) - F1-20 (GND) L - BR Battery Always 11 to 14 V
      F1-20 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
      F1-11 (ACC) - F1-20 (GND) GR - BR Accessory (ON) Engine switch off Below 1 V
      F1-11 (ACC) - F1-20 (GND) GR - BR Accessory (ON) Engine switch on (ACC) 11 to 14 V

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

    3. Reconnect the F1 receiver connector.
    4. Measure the resistance, waveform and voltage according to the value (s) in the table below.
      TERMINAL DESCRIPTION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F1-2 (ILL+) - F1-20 (GND) G - BR Illumination signal Engine switch on (IG), light control switch off Below 1 V
      F1-2 (ILL+) - F1-20 (GND) G - BR Illumination signal Engine switch on (IG), light control switch tail or on 11 to 14 V
      F1-7 (MUTE) - F1-20 (GND) B - BR Mute signal Audio system playing → changing modes 3.5 V or higher → Below 1 V
      F1-8 (R+) - F1-20 (GND) B - BR Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F1-9 (L+) - F1-20 (GND) R - BR Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F1-18 (R-) - F1-20 (GND) W - BR Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F1-19 (L-) - F1-20 (GND) G - BR Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F1-10 (SLD) - F1-20 (GND) Shielded - BR Shielded ground Always Below 1 V
      F24-5 (CDL-) - F1-20 (GND)(1)(2) R - BR Sound signal (left) RSE system playing Waveform synchronized with sound is output
      F24-4 (CDL+) - F1-20 (GND)(1)(2) L - BR Sound signal (left) RSE system playing Waveform synchronized with sound is output
      F24-3 (CDR-) - F1-20 (GND)(1)(2) W - BR Sound signal (right) RSE system playing Waveform synchronized with sound is output
      F24-2 (CDR+) - F1-20 (GND)(1)(2) B - BR Sound signal (right) RSE system playing Waveform synchronized with sound is output
      F24-6 (MUTE) - F1-20 (GND)(1)(2) G - BR Mute signal RSE system playing → changing modes 3.5 V or higher → Below 1 V
      F23-18 (R-L-) - F1-20 (GND)(1)(2) R - BR Sound signal (left) RSE system playing Waveform synchronized with sound is output
      F23-17 (R-L+) - F1-20 (GND)(1)(2) L - BR Sound signal (left) RSE system playing Waveform synchronized with sound is output
      F23-16 (R-R-) - F1-20 (GND)(1)(2) W - BR Sound signal (right) RSE system playing Waveform synchronized with sound is output
      F23-15 (R-R+) - F1-20 (GND)(1)(2) B - BR Sound signal (right) RSE system playing Waveform synchronized with sound is output
      F23-14 (RSLD) - Body ground(1)(2) Shielded - Body ground Ground Always Below 1 V
      F23-19 (RMUT) - F1-20 (GND)(1)(2) G - BR Mute signal RSE system playing → changing modes 3.5 V or higher → Below 1 V
      F25-7 (SLD2) - Body ground(1) Shielded - Body ground Ground Always Below 1 Ω
      F25-6 (SGD4) - F1-20 (GND)(1) W - BR Ground Always Below 1 Ω
      F25-5 (NTRO) - F1-20 (GND)(1) B - BR Display signal DVD image playing Pulse generation
      F1-12 (ILL-) - F1-20 (GND) W - BR Illumination signal Engine switch off Below 1 V
      F1-12 (ILL-) - F1-20 (GND) W - BR Illumination signal Engine switch on (IG) Pulse generation
      F23-9 (TX+) - F1-20 (GND) W - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F23-10 (TX-) - F1-20 (GND) L - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F1-5 (ATX+) - F1-20 (GND) R - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F1-15 (ATX-) - F1-20 (GND) W - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F24-9 (TXM+) - F1-20 (GND)(2) G - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F24-10 (TXM-) - F1-20 (GND)(2) R - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F30-3 (TX1+) - F1-20 (GND)(2) B - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F30-6 (TX1-) - F1-20 (GND)(2) W - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F30-2 (TX0+) - F1-20 (GND)(3) B - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F30-5 (TXO+) - F1-20 (GND)(3) W - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F1-13 (ANT) - F1-20 (GND) P - BR Power source of antenna Radio switch on and AM or FM 11 to 14 V
      F23-6 (SWG) - F1-20 (GND) W - BR Steering pad switch ground Always Below 1 V
      F23-7 (SW1) - F1-20 (GND) L - BR Steering pad switch signal Steering pad switch not pushed 4 V or higher
      F23-7 (SW1) - F1-20 (GND) L - BR Steering pad switch signal Steering pad switch seek+ switch pushed Below 0.5 V
      F23-7 (SW1) - F1-20 (GND) L - BR Steering pad switch signal Steering pad switch seek-switch pushed 0.8 V
      F23-7 (SW1) - F1-20 (GND) L - BR Steering pad switch signal Steering pad switch vol+ switch pushed 1.8V
      F23-7 (SW1) - F1-20 (GND) L - BR Steering pad switch signal Steering pad switch vol-switch pushed 3.0 V
      F23-8 (SW2) - F1-20 (GND) P - BR Steering pad switch signal Steering pad switch not pushed 4 V or higher
      F23-8 (SW2) - F1-20 (GND) P - BR Steering pad switch signal Steering pad switch MODE switch pushed Below 0.5 V
      F23-8 (SW2) - F1-20 (GND) P - BR Steering pad switch signal Steering pad switch on hook switch pushed 0.9 V
      F23-8 (SW2) - F1-20 (GND) P - BR Steering pad switch signal Steering pad switch off hook switch pushed 1.5 V
      F23-8 (SW2) - F1-20 (GND) P - BR Steering pad switch signal Steering pad switch voice recognition switch pushed 3.0 V
      F25-1 (NTSC) - F1-20 (GND) W - BR DVD image signal DVD played Pulse generation (see  ewaveform 1)
      F25-2 (GND) - F1-20 (GND) B - BR Ground Always Below 1 V
      F25-3 (SLD) - F1-20 (GND) Shielded - BR Shielded ground Always Below 1 V
      F26-2 (ARI) - F1-20 (GND) W - BR Sound signal (right) External device playing (When stereo jack used) Waveform synchronized with sound is output
      F26-5 (ASGN) - F1-20 (GND) R - BR Ground Always Below 1 V
      F26-4 (AGND) - F1-20 (GND) Shielded - BR Shielded ground Always Below 1 V
      F26-3 (ALI) - F1-20 (GND) B - BR Sound signal (left) External device playing (When stereo jack used) Waveform synchronized with sound is output
      F26-6 (AUXI) - F1-20 (GND) V - BR External device connection detection signal External device connected Below 1 V
      F44-1 (DVD) - F1-20 (GND) # - BR Digital image signal DVD played on radio receiver -
      #: There is no wire color information.
      (1) w/ Rear Seat Entertainment System
      (2) w/ SDARS System
      (3) w/ Navigation System

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

    5. Using an oscilloscope, check the waveform.

      Waveform 1 (reference) 

      WAVEFORM 1 (REFERENCE)

      Item Content
      Terminal No. (Symbol) F25-1 (NTSC) - Body ground
      Tool Setting 200 mV/DIV., 10 μsec./DIV.
      Condition DVD displayed on multi-display
  3. CHECK RADIO RECEIVER (for CD Changer Models) 
    Fig 5: Waveform 1 Graph
    G05630163Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 6: Identifying Radio Receiver Connector Terminals
    G05762749Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F1 receiver connector.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      TERMINAL DESCRIPTION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F1-1 (B) - F1-20 (GND) L - BR Battery Always 11 to 14 V
      F1-20 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
      F1-11 (ACC) - F1-20 (GND) GR - BR Accessory (ON) Engine switch off Below 1 V
      F1-11 (ACC) - F1-20 (GND) GR - BR Accessory (ON) Engine switch on (ACC) 11 to 14 V

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

    3. Reconnect the F1 receiver connector.
    4. Measure the voltage according to the value (s) in the table below.
      TERMINAL DESCRIPTION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F1-2 (ILL+) - F1-20 (GND) G - BR Illumination signal Engine switch on (IG), light control switch off Below 1 V
      F1-2 (ILL+) - F1-20 (GND) G - BR Illumination signal Engine switch on (IG), light control switch tail or on 11 to 14 V
      F1-7 (MUTE) - F1-20 (GND) B - BR Mute signal Audio system playing → changing modes 3.5 V or higher → Below 1 V
      F1-8 (R+) - F1-20 (GND) B - BR Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F1-9 (L+) - F1-20 (GND) R - BR Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F1-18 (R-) - F1-20 (GND) W - BR Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F1-19 (L-) - F1-20 (GND) G - BR Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F1-12 (ILL-) - F1-20 (GND) W - BR Illumination signal Engine switch off Below 1 V
      F1-12 (ILL-) - F1-20 (GND) W - BR Illumination signal Engine switch on (IG) Pulse generation
      F1-5 (ATX+) - F1-20 (GND) R - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F1-15 (ATX-) - F1-20 (GND) W - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F23-9 (TX+) - F1-20 (GND) W - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F23-10 (TX-) - F1-20 (GND) L - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F24-9 (TXM+) - F1-20 (GND)(1) G - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F24-10 (TXM-) - F1-20 (GND)(1) R - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F1-13 (ANT) - F1-20 (GND) P - BR Power source of antenna Radio switch on and AM or FM 11 to 14 V
      F23-6 (SWG) - F1-20 (GND) W - BR Steering pad switch ground Always Below 1 V
      F23-7 (SW1) - F1-20 (GND) L - BR Steering pad switch signal Steering pad switch not pushed 4 V or higher
      F23-7 (SW1) - F1-20 (GND) L - BR Steering pad switch signal Steering pad switch seek+ switch pushed Below 2.5 V
      F23-7 (SW1) - F1-20 (GND) L - BR Steering pad switch signal Steering pad switch seek-switch pushed Below 0.9 V
      F23-7 (SW1) - F1-20 (GND) L - BR Steering pad switch signal Steering pad switch vol+ switch pushed Below 1.5 V
      F23-7 (SW1) - F1-20 (GND) L - BR Steering pad switch signal Steering pad switch vol+ switch pushed Below 0.9 V
      F23-8 (SW2) - F1-20 (GND) P - BR Steering pad switch signal Steering pad switch not pushed 4 V or higher
      F23-8 (SW2) - F1-20 (GND) P - BR Steering pad switch signal Steering pad switch MODE switch pushed Below 2.5 V
      F23-8 (SW2) - F1-20 (GND) P - BR Steering pad switch signal Steering pad switch DISP switch pushed Below 2.5 V
      F23-15 (ARI) - F1-20 (GND) W - BR Sound signal (right) External device playing (When stereo jack used) Waveform synchronized with sound is output
      F23-16 (ASGW) - F1-20 (GND) R - BR Ground Always Below 1 V
      F23-18 (AGND) - F1-20 (GND) Shielded - Body ground Shielded ground Always Below 1 V
      F23-17 (ALI) - F1-20 (GND) B - BR Sound signal (left) External device playing (When stereo jack used) Waveform synchronized with sound is output
      F23-19 (AUXI) - F1-20 (GND) V - BR External device connection detection signal External device connected Below 1 V
      (1) w/ SDARS System

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

  4. CHECK STEREO COMPONENT AMPLIFIER (for DVD Changer Models) 
    1. Disconnect the F18 and F2 amplifier connectors.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      Fig 7: Identifying Stereo Component Amplifier Connector Terminals
      G05762750Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TERMINAL DESCRIPTION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F2-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F2-6 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F2-1 (+B) - F2-2 (GND) L - W-B Battery Always 11 to 14 V
      F2-3 (+B2) - F2-2 (GND) L - W-B Battery Always 11 to 14 V
      F18-12 (ACC) - F2-2 (GND) GR - W-B Accessory (ON) Engine switch off Below 1 V
      F18-12 (ACC) - F2-2 (GND) GR - W-B Accessory (ON) Engine switch on (ACC) 11 to 14 V

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

    3. Reconnect the F18 and F2 amplifier connectors.
    4. Measure the voltage according to the value (s) in the table below.
      TERMINAL DESCRIPTION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F3-3 (CTR+) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F3-9 (CTR-) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-2 (FL+) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-6 (FL-) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-8 (FR+) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-7 (FR-) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F3-4 (RL+) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F3-10 (RL-) - F2-2 (GND) Y - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-1 (RR+) - F2-2 (GND) R - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-5 (RR-) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F3-1 (WF1+) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F3-6 (WF1-) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F18-15 (II1+) - F2-2 (GND) W - W-B Voice guidance signal Voice guidance playing Waveform synchronized with sound is output
      F18-14 (IM-) - F2-2 (GND) B - W-B Voice guidance signal Voice guidance playing Waveform synchronized with sound is output
      F18-11 (SPD) - F2-2 (GND) V - W-B Speed signal Engine switch on (IG), drive wheels turned slowly Pulse generation
      F18-1 (MUTE) - F2-2 (GND) B - W-B Mute signal Audio system playing → change mode 3.5 V or higher → Below 1 V
      F18-24 (TMUT) - F2-2 (GND) B - W-B Mute signal Audio system playing → emergency call made 3.5 V or higher → Below 1 V
      F18-8 (TX+) - F2-2 (GND) R - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F18-7 (TX-) - F2-2 (GND) W - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F18-5 (R+) - F2-2 (GND) B - W-B Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F18-4 (R-) - F2-2 (GND) W - W-B Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F18-3 (L+) - F2-2 (GND) R - W-B Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F18-2 (L-) - F2-2 (GND) G - W-B Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F31-3 (R-L+) - F2-2 (GND) W - W-B Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F31-9 (R-L-) - F2-2 (GND) B - W-B Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F31-4 (R-R+) - F2-2 (GND) W - W-B Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F31-10 (R-R-) - F2-2 (GND) B - W-B Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F4-2 (SL+) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F4-7 (SL-) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F4-1 (SR+) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F4-6 (SR-) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F4-10 (WFL+) - F2-2 (GND) P - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F4-8 (WFL-) - F2-2 (GND) V - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F4-5 (WFR+) - F2-2 (GND) LG - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F4-11 (WFR-) - F2-2 (GND) L - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F43-1 (DVD) - F2-2 (GND) # - W-B Digital image signal DVD played on radio receiver -
      HINT:
      #: There is no wire color information.

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

  5. CHECK STEREO COMPONENT AMPLIFIER (for CD Changer Models) 
    Fig 8: Identifying Stereo Component Amplifier Connector Terminals
    G05762751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F18 and F2 amplifier connectors.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      TERMINAL DESCRIPTION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F2-2 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F2-6 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F2-1 (+B) - F2-2 (GND) L - W-B Battery Always 11 to 14 V
      F18-12 (ACC) - F2-2 (GND) GR - W-B Accessory (ON) Engine switch off Below 1 V
      F18-12 (ACC) - F2-2 (GND) GR - W-B Accessory (ON) Engine switch on (ACC) 11 to 14 V

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

    3. Reconnect the F18 and F2 amplifier connectors.
    4. Measure the voltage and waveform according to the value (s) in the table below.
      TERMINAL DESCRIPTION

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F3-3 (CTR+) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F3-9 (CTR-) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-2 (FL+) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-6 (FL-) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-8 (FR+) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-7 (FR-) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F18-3 (L+) - F2-2 (GND) R - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F18-2 (L-) - F2-2 (GND) G - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F18-5 (R+) - F2-2 (GND) B - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F18-4 (R-) - F2-2 (GND) W - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F18-11 (SPD) - F2-2 (GND) V - W-B Speed signal Engine switch on (IG), drive wheels turned slowly Pulse generation
      F18-1 (MUTE) - F2-2 (GND) B - W-B Mute signal Audio system playing → change mode 3.5 V or higher → Below 1 V
      F18-8 (TX+) - F2-2 (GND) R - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F18-7 (TX-) - F2-2 (GND) W - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3V
      F18-5 (R+) - F2-2 (GND) B - W-B Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F18-4 (R-) - F2-2 (GND) W - W-B Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F18-3 (L+) - F2-2 (GND) R - W-B Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F18-2 (L-) - F2-2 (GND) G - W-B Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F31-3 (RL+) - F2-2 (GND) B - W-B Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F31-9 (RL-) - F2-2 (GND) Y - W-B Sound signal (left) Audio system playing Waveform synchronized with sound is output
      F31-4 (RR+) - F2-2 (GND) R - W-B Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F31-10 (RR-) - F2-2 (GND) W - W-B Sound signal (right) Audio system playing Waveform synchronized with sound is output
      F3-4 (WFL+) - F2-2 (GND) P - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F3-10 (WFL-) - F2-2 (GND) V - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-1 (WFR+) - F2-2 (GND) LG - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F31-5 (WFR-) - F2-2 (GND) L - W-B Sound signal Audio system playing Waveform synchronized with sound is output
      F18-15 (ll1+) - F2-2 (GND) W - W-B Voice guidance signal Voice guidance provided Waveform synchronized with sound is output
      F18-14 (IM-) - F2-2 (GND) B - W-B Voice guidance signal Voice guidance provided Waveform synchronized with sound is output

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

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