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Terminals Of Ecu

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.
  1. RADIO RECEIVER 
    Fig 1: Identifying Terminals Of ECU (Radio Receiver)
    G04115422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    RADIO RECEIVER CONNECTOR TERMINALS REFERENCE

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specification
    B (R2-1) - GND (R2-20) L-B - BR Battery Always 10 to 14 V
    ILL+ (R2-2) - GND (R2-20) G - BR Illumination (rheostat) signal Light control switch OFF --> TAIL Below 1 V --> 10 to 14 V
    ATX+ (R2-5) - GND (R2-20) P - BR AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    MUTE (R2-7) - GND (R2-20) GR - BR MUTE signal Audio system is playing --> Changing Above 3.5 V --> Below 1 V
    R+ (R2-8) - GND (R2-20) B - BR Sound signal (Right) Audio system is playing A waveform synchronized with sounds is output
    L+ (R2-9) - GND (R2-20) R - BR Sound signal (Left) Audio system is playing A waveform synchronized with sounds is output
    SLD (R2-10) - Body ground Shielded - Body ground Shield ground Always Below 1 V
    ACC (R2-11) - GND (R2-20) GR - BR Accessory (ON) Turn ignition switch to ACC 10 to 14 V
    ILL- (R2-12) - GND (R2-20) W - BR Illumination (rheostat) signal Turn ignition switch off --> ON Below 1 V --> Pulse generation
    ANT (R2-13) - GND (R2-20) O - BR Power source of antenna Radio switch ON and AM or FM 10 to 14 V
    ATX- (R2-15) - GND (R2-20) L - BR AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    R- (R2-18) - GND (R2-20) W - BR Sound signal (Right) Audio system is playing A waveform synchronized with sounds is output
    L- (R2-19) - GND (R2-20) G - BR Sound signal (Left) Audio system is playing A waveform synchronized with sounds is output
    GND (R2-20) - Body ground BR - Body ground Ground Always Below 1 V
    SWG (R4-6) - GND (R2-20) R - BR Steering pad switch ground Always Below 1 V
    SW1 (R4-7) - GND (R2-20) G - BR Steering pad switch signal Steering pad switch not operated
    --> SEEK+ switch pushed
    --> SEEK- switch pushed
    --> VOL+ switch pushed
    --> VOL- switch pushed    		 4 V or more
    --> Approx. 0.5 V
    --> Approx. 0.9 V
    --> Approx. 2.0 V
    --> Approx. 3.4 V
    SW2 (R4-8) - GND (R2-20) V - BR Steering pad switch signal Steering pad switch not operated --> MODE switch pushed 4 V or more --> Below 2.5 V
    TX+ (R4-9) - GND (R2-20) ((2)) Y - BR AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    TX- (R4-10) - GND (R2-20) ((2)) BR - BR AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    RSLD (R4-14) - Body ground Shielded - Body ground Shield ground Always Below 1 V
    R-R+ (R4-15) - GND (R2-20) ((2)) P - BR Sound signal to RSE Audio system is playing A waveform synchronized with sounds is output
    R-R- (R4-16) - GND (R2-20) ((2)) LG - BR Sound signal to RSE Audio system is playing A waveform synchronized with sounds is output
    R-L+ (R4-17) - GND (R2-20) ((2)) SB - BR Sound signal to RSE Audio system is playing A waveform synchronized with sounds is output
    R-L- (R4-18) - GND (R2-20) ((2)) BR - BR Sound signal to RSE Audio system is playing A waveform synchronized with sounds is output
    RMUT (R4-19) - GND (R2-20) ((2)) O - BR RSE MUTE signal Audio system is playing --> Changing Above 3.5 V --> Below 1 V
    ADIM (R4-20) - GND (R2-20) SB - BR Illumination (auto dimmer) signal Ignition switch on, headlight dimmer switch in TAIL or ON and automatic light control sensor covered by hand Above 9 V
    CSLD (R3-1) - Body ground Shielded - Body ground Shield ground Always Below 1 V
    CDR+ (R3-2) - GND (R2-20) ((2)) L - BR Sound signal to RSE RSE system is playing A waveform synchronized with sounds is output
    CDR- (R3-3) - GND (R2-20) ((2)) O - BR Sound signal to RSE RSE system is playing A waveform synchronized with sounds is output
    CDL+ (R3-4) - GND (R2-20) ((2)) Y - BR Sound signal to RSE RSE system is playing A waveform synchronized with sounds is output
    CDL- (R3-5) - GND (R2-20) ((2)) V - BR Sound signal to RSE RSE system is playing A waveform synchronized with sounds is output
    MUTE (R3-6) - GND (R2-20) ((2)) B - BR RSE MUTE signal RSE system is changing Above 3.5 V --> Below 1 V
    TX+ (R3-9) - GND (R2-20) ((1)) Y - BR AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    TX- (R3-10) - GND (R2-20) ((1)) BR - BR AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    (1) With Navigation System
    (2) With Rear Seat Entertainment System
  2. STEREO COMPONENT AMPLIFIER (STANDARD SYSTEM) 
    Fig 2: Identifying Stereo Component Amplifier Connector Terminals (Standard System)
    G04115423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    STEREO COMPONENT AMPLIFIER (STANDARD SYSTEM) TERMINALS REFERENCE

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specification
    +B (S30-1) - GND (S30-16) W - W-B Battery Always 10 to 14 V
    WF2+ (S30-4) - GND (S30-16) V - W-B Sound signal (Woofer Left) Audio system is playing A waveform synchronized with sounds is output
    WF1+ (S30-5) - GND (S30-16) P - W-B Sound signal (Woofer Right) Audio system is playing A waveform synchronized with sounds is output
    RL+ (S30-6) - GND (S30-16) R - W-B Sound signal (Rear Left) Audio system is playing A waveform synchronized with sounds is output
    RR+ (S30-7) - GND (S30-16) R-Y - W-B Sound signal (Rear Right) Audio system is playing A waveform synchronized with sounds is output
    FL+ (S30-8) - GND (S30-16) Y ((1)) - W-B
    BR ((2)) - W-B    		 Sound signal (Front Left) Audio system is playing A waveform synchronized with sounds is output
    FR+ (S30-9) - GND (S30-16) V - W-B Sound signal (Front Right) Audio system is playing A waveform synchronized with sounds is output
    +B2 (S30-10) - GND (S30-16) W - W-B Battery Always 10 to 14 V
    WF2- (S30-13) - GND (S30-16) W - W-B Sound signal (Front Left) Audio system is playing A waveform synchronized with sounds is output
    WF1- (S30-14) - GND (S30-16) L-B - W-B Sound signal (Front Right) Audio system is playing A waveform synchronized with sounds is output
    GND2 (S30-15) - Body ground W-B - Body ground Ground Always Below 1 V
    GND (S30-16) - Body ground W-B - Body ground Ground Always Below 1 V
    RL- (S30-17) - GND (S30-16) GR - W-B Sound signal (Rear Left) Audio system is playing A waveform synchronized with sounds is output
    RR- (S30-18) - GND (S30-16) L - W-B Sound signal (Rear Right) Audio system is playing A waveform synchronized with sounds is output
    FL- (S30-19) - GND (S30-16) LG ((1)) - W-B
    R-Y ((2)) - W-B    		 Sound signal (Front Left) Audio system is playing A waveform synchronized with sounds is output
    FR- (S30-20) - GND (S30-16) P - W-B Sound signal (Front Right) Audio system is playing A waveform synchronized with sounds is output
    MUTE (S29-1) - GND (S30-16) GR - W-B Mute signal from radio receiver Audio system is playing --> Changing Above 3.5 V --> Below 3.5 V
    L- (S29-2) - GND (S30-16) G - W-B Sound signal from radio receiver (Left) Audio system is playing A waveform synchronized with sounds is output
    L+ (S29-3) - GND (S30-16) R - W-B Sound signal from radio receiver (Left) Audio system is playing A waveform synchronized with sounds is output
    R- (S29-4) - GND (S30-16) W - W-B Sound signal from radio receiver (Right) Audio system is playing A waveform synchronized with sounds is output
    R+ (S29-5) - GND (S30-16) B - W-B Sound signal from radio receiver (Right) Audio system is playing A waveform synchronized with sounds is output
    TX- (S29-7) - GND (S30-16) L - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    TX+ (S29-8) - GND (S30-16) P - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    SPD (S29-11) - GND (S30-16) SB - W-B Speed signal from combination meter Vehicle is driven Pulse generation
    ACC (S29-12) - GND (S30-16) P - W-B Accessory (ON) Turn ignition switch to ACC Below 1 V --> 10 to 14 V
    N-MU (S29-21) - GND (S30-16) ((1)) V - W-B Mute signal from navigation ECU Navigation system is changing Above 3.5 V --> Below 1 V
    (1) With Navigation System
    (2) Without Navigation System
  3. STEREO COMPONENT AMPLIFIER (MARK LEVINSON SYSTEM) 
    Fig 3: Identifying Stereo Component Amplifier Connector Terminals (Mark Levinson System)
    G04115424Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    STEREO COMPONENT AMPLIFIER CONNECTOR TERMINALS (MARK LEVINSON SYSTEM) REFERENCE

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specification
    FR+ (S28-1) - GND (S28-13) P - W-B Sound signal (Front Right) Audio system is playing A waveform synchronized with sounds is output
    FL+ (S28-2) - GND (S28-13) V - W-B Sound signal (Front Left) Audio system is playing A waveform synchronized with sounds is output
    RR+ (S28-3) - GND (S28-13) R-Y - W-B Sound signal (Rear Right) Audio system is playing A waveform synchronized with sounds is output
    RL+ (S28-4) - GND (S28-13) R - W-B Sound signal (Rear Left) Audio system is playing A waveform synchronized with sounds is output
    CTF+ (S28-5) - GND (S28-13) GR - W-B Sound signal (Center) Audio system is playing A waveform synchronized with sounds is output
    B+ (S28-7) - GND (S28-13) W - W-B Battery Always 10 to 14 V
    FR- (S28-8) - GND (S28-13) L-B - W-B Sound signal (Front Right) Audio system is playing A waveform synchronized with sounds is output
    FL- (S28-9) - GND (S28-13) W - W-B Sound signal (Front Left) Audio system is playing A waveform synchronized with sounds is output
    RR- (S28-10) - GND (S28-13) L - W-B Sound signal (Rear Right) Audio system is playing A waveform synchronized with sounds is output
    RL- (S28-11) - GND (S28-13) GR - W-B Sound signal (Rear Left) Audio system is playing A waveform synchronized with sounds is output
    E (S28-12) - Body ground W-B - Body ground Ground Always Below 1 V
    GND (S28-13) - Body ground W-B - Body ground Ground Always Below 1 V
    CTF- (S28-14) - GND (S28-13) B - W-B Sound signal (Center) Audio system is playing A waveform synchronized with sounds is output
    B+ (S28-16) - GND (S28-13) W - W-B Battery Always 10 to 14 V
    TFR+ (S27-1) - GND (S28-13) V - W-B Sound signal (Front Right) Audio system is playing A waveform synchronized with sounds is output
    TFL+ (S27-2) - GND (S28-13) Y ((1)) - W-B BR ((2)) - W-B Sound signal (Front Left) Audio system is playing A waveform synchronized with sounds is output
    MTX+ (S27-5) - GND (S28-13) P - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    N-MU (S27-9) - GND (S28-13) V((1)) - W-B Mute signal from navigation ECU Audio system is playing --> Changing Above 3.5 V --> Below 1 V
    R+ (S27-11) - GND (S28-13) B - W-B Sound signal from radio receiver (Right) Audio system is playing A waveform synchronized with sounds is output
    L+ (S27-12) - GND (S28-13) R - W-B Sound signal from radio receiver (Left) Audio system is playing A waveform synchronized with sounds is output
    SPD (S27-13) - GND (S28-13) SB - W-B Speed signal from combination meter Vehicle is driven Pulse generation
    TFR- (S27-14) - GND (S28-13) P - W-B Sound signal (Front Right) Audio system is playing A waveform synchronized with sounds is output
    TFL- (S27-15) - GND (S28-13) LG ((1)) - W-B
    R-Y ((2)) - W-B    		 Sound signal (Front Left) Audio system is playing A waveform synchronized with sounds is output
    MTX- (S27-18) - GND (S28-13) L - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    ACC (S27-20) - GND (S28-13) P - W-B Accessory (ON) Turn ignition switch off --> ACC or ON 10 to 14 V
    MUTE (S27-21) - GND (S28-13) GR - W-B Mute signal from radio receiver Audio system is playing --> Changing Above 3.5 V --> Below 1 V
    R- (S27-23) - GND (S28-13) W - W-B Sound signal from radio receiver (Right) Audio system is playing A waveform synchronized with sounds is output
    L- (S27-24) - GND (S28-13) G - W-B Sound signal from radio receiver (Left) Audio system is playing A waveform synchronized with sounds is output
    (1) With Navigation System
    (2) Without Navigation System
  4. GATEWAY ECU (See  GATEWAY ECU COMMUNICATION ERROR  ) 
  5. MULTI-DISPLAY CONTROLLER (See  MULTI-DISPLAY CONTROLLER POWER SOURCE CIRCUIT   ) 
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