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Terminals Of Ecu

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
  1. RADIO RECEIVER ASSEMBLY (for 12 Speakers) 
    Fig 1: Radio Receiver Assembly Connector Terminal Identification (For 12 Speakers)
    GTY299495Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    E31-1 (B) - E31-20 (GND) R - BR Battery Always 11 to 14 V
    E31-2 (ILL+) - E31-20 (GND) G - BR Illumination signal Light control switch off Below 1 V
    E31-2 (ILL+) - E31-20 (GND) G - BR Illumination signal Light control switch tail or head 11 to 14 V
    E31-5 (ATX+) Y AVC-LAN communication signal - -
    E31-7 (MUTE) - E31-20 (GND) L - BR Mute signal Audio system playing mode Above 3.5 V
    E31-7 (MUTE) - E31-20 (GND) L - BR Mute signal Audio system changing mode Below 1 V
    E31-8 (R+) - E31-20 (GND) R - BR Sound signal (Right) Audio system playing mode A waveform synchronized with sounds is output
    E31-9 (L+) - E31-20 (GND) B - BR Sound signal (Left) Audio system playing mode A waveform synchronized with sounds is output
    E31-10 (SLD) - Body ground Shield - Body ground Shield ground Always Below 1 V
    E31-11 (ACC) - E31-20 (GND) Y - BR Accessory (ON) Ignition switch off Below 1 V
    E31-11 (ACC) - E31-20 (GND) Y - BR Accessory (ON) Ignition switch ACC 11 to 14 V
    E31-12 (ILL-) - E31-20 (GND) LG - BR Illumination (rheostat) signal Light control switch off Below 1 V
    E31-12 (ILL-) - E31-20 (GND) LG - BR Illumination (rheostat) signal Light control switch tail or head Pulse generation
    E31-13 (ANT) - E31-20 (GND) B - BR Power source of antenna Ignition switch ACC
    Radio switch on and AM or FM selected    		 11 to 14 V
    E31-15 (ATX-) BR AVC-LAN communication signal - -
    E31-18 (R-) - E31-20 (GND) G - BR Sound signal (Right) Audio system playing mode A waveform synchronized with sounds is output
    E31-19 (L-) - E31-20 (GND) W - BR Sound signal (Left) Audio system playing mode A waveform synchronized with sounds is output
    E31-20 (GND) - Body ground BR - Body ground Ground Always Below 1 V
    E34-3 (SPD) - E31-20 (GND) P - BR Vehicle speed signal from combination meter assembly Ignition switch ON
    Drive wheels turned slowly    		 Pulse generation
    E34-6 (SWG) - E31-20 (GND) B - BR Steering pad switch ground Always Below 1 V
    E34-7 (SW1) - E31-20 (GND) BE - BR Steering pad switch signal Steering pad switch not operated 3.28 to 3.5 V
    E34-7 (SW1) - E31-20 (GND) BE - BR Steering pad switch signal Seek+ switch pushed Below 0.8 V
    E34-7 (SW1) - E31-20 (GND) BE - BR Steering pad switch signal Seek- switch pushed 0.9 to 1.3 V
    E34-7 (SW1) - E31-20 (GND) BE - BR Steering pad switch signal Volume+ switch pushed 1.65 to 1.9 V
    E34-7 (SW1) - E31-20 (GND) BE - BR Steering pad switch signal Volume- switch pushed 2.45 to 2.6 V
    E34-8 (SW2) - E31-20 (GND) V - BR Steering pad switch signal Steering pad switch not operated 3.28 to 3.5 V
    E34-8 (SW2) - E31-20 (GND) V - BR Steering pad switch signal MODE switch pushed Below 0.8 V
    E34-8 (SW2) - E31-20 (GND) V - BR Steering pad switch signal On hook switch pushed 0.86 to 0.95 V
    E34-8 (SW2) - E31-20 (GND) V - BR Steering pad switch signal Off hook switch pushed 1.91 to 2.01 V
    E34-8 (SW2) - E31-20 (GND) V - BR Steering pad switch signal Voice switch pushed 3.23 to 3.57 V
    E34-11 (IVO+) - E31-20 (GND) Y - BR Voice signal "Bluetooth" hands-free voice signal transmitted A waveform synchronized with sounds is output
    E34-12 (IVO-) - E31-20 (GND) BR - BR Voice signal "Bluetooth" hands-free voice signal transmitted A waveform synchronized with sounds is output
    E34-13 (SLD1) - E31-20 (GND) Shield - BR Shield ground Always Below 1 V
    E34-15 (ARI) - E31-20 (GND) G - BR Sound signal (Right) External device playing (When stereo jack used) A waveform synchronized with sounds is output
    E34-16 (ASGN) - E31-20 (GND) L - BR Shield ground Always Below 1 V
    E34-17 (ALI) - E31-20 (GND) P - BR Sound signal (Left) External device playing (When stereo jack used) A waveform synchronized with sounds is output
    E34-18 (AGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    E34-19 (AUXI) - E31-20 (GND) SB - BR External device connection detection signal External device connected Below 1 V
    E34-20 (ADIM) - E31-20 (GND) R - BR Illumination (auto dimmer) signal Ignition switch ON, headlight dimmer switch in tail or head and automatic light control sensor covered by hand Above 9 V
    E40-1 (SNS2) - E31-20 (GND) SB - BR Microphone connection detection signal Always Below 1 V
    E40-2 (MIC+) - E31-20 (GND) P - BR Microphone voice signal "Bluetooth" hands-free function on A waveform synchronized with sounds is output
    E40-3 (MACC) - E31-20 (GND) L - BR Microphone amplifier power supply Ignition switch off Below 1 V
    E40-3 (MACC) - E31-20 (GND) L - BR Microphone amplifier power supply Ignition switch ON 4 to 6 V
    E40-5 (MIC-) - E31-20 (GND) G - BR Microphone voice signal "Bluetooth" hands-free function on A waveform synchronized with sounds is output
    E40-6 (SGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    E35-2 (CDR+) - E31-20 (GND) LG - BR USB audio system sound signal USB audio system playing A waveform synchronized with sounds is output
    E35-3 (CDR-) - E31-20 (GND) BR - BR USB audio system sound signal USB audio system playing A waveform synchronized with sounds is output
    E35-4 (CDL+) - E31-20 (GND) P - BR USB audio system sound signal USB audio system playing A waveform synchronized with sounds is output
    E35-5 (CDL-) - E31-20 (GND) SB - BR USB audio system sound signal USB audio system playing A waveform synchronized with sounds is output
    E35-6 (MUTE) - E31-20 (GND) W - BR Mute signal USB audio system playing Above 3.5 V
    E35-6 (MUTE) - E31-20 (GND) W - BR Mute signal USB audio system changing mode Below 1 V
    E35-7 (GND) - E31-20 (GND) W-B - BR Ground Always Below 1 V
    E35-9 (TXM+) R AVC-LAN communication signal - -
    E35-10 (TXM-) G AVC-LAN communication signal - -
    E35-11 (ACC) - E31-20 (GND) GR - BR Accessory (ON) Ignition switch off Below 1 V
    E35-11 (ACC) - E31-20 (GND) GR - BR Accessory (ON) Ignition switch ACC 11 to 14 V
    E35-12 (+B) - E31-20 (GND) L - BR Battery Always 11 to 14 V
  2. RADIO RECEIVER ASSEMBLY (for 9 Speakers) 
    Fig 2: Radio Receiver Assembly Connector Terminal Identification (For 9 Speakers)
    GTY295779Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    E32-1 (FR+) - E32-7 (GND) GR - BR Sound signal (Front Right) Audio system playing A waveform synchronized with sounds is output
    E32-2 (FL+) - E32-7 (GND) LG - BR Sound signal (Front Left) Audio system playing A waveform synchronized with sounds is output
    E32-3 (ACC) - E32-7 (GND) Y - BR Accessory (ON) Ignition switch off Below 1 V
    E32-3 (ACC) - E32-7 (GND) Y - BR Accessory (ON) Ignition switch ACC 11 to 14 V
    E32-4 (B) - E32-7 (GND) R - BR Battery Always 11 to 14 V
    E32-5 (FR-) - E32-7 (GND) W - BR Sound signal (Front Right) Audio system playing A waveform synchronized with sounds is output
    E32-6 (FL-) - E32-7 (GND) L - BR Sound signal (Front Left) Audio system playing A waveform synchronized with sounds is output
    E32-7 (GND) - Body ground BR - Body ground Ground Always Below 1 V
    E32-8 (ANT) - E32-7 (GND) B - BR Power source of antenna Ignition switch ACC
    Radio switch on and AM or FM selected    		 11 to 14 V
    E32-10 (ILL+) - E32-7 (GND) G - BR Illumination signal Light control switch off Below 1 V
    E32-10 (ILL+) - E32-7 (GND) G - BR Illumination signal Light control switch tail or head 11 to 14 V
    E33-1 (RR+) - E32-7 (GND) R - BR Sound signal (Rear Right) Audio system playing A waveform synchronized with sounds is output
    E33-2 (RL+) - E32-7 (GND) Y - BR Sound signal (Rear Left) Audio system playing A waveform synchronized with sounds is output
    E33-3 (RR-) - E32-7 (GND) W - BR Sound signal (Rear Right) Audio system playing A waveform synchronized with sounds is output
    E33-5 (ILL-) - E32-7 (GND) LG - BR Illumination (rheostat) signal Light control switch off Below 1 V
    E33-5 (ILL-) - E32-7 (GND) LG - BR Illumination (rheostat) signal Light control switch tail or head Pulse generation
    E33-6 (RL-) - E32-7 (GND) B - BR Sound signal (Rear Left) Audio system playing A waveform synchronized with sounds is output
    E34-3 (SPD) - E32-7 (GND) P - BR Vehicle speed signal from combination meter assembly Ignition switch ON
    Turn drive wheels slowly    		 Pulse generation
    E34-6 (SWG) - E32-7 (GND) B - BR Steering pad switch ground Always Below 1 V
    E34-7 (SW1) - E32-7 (GND) BE - BR Steering pad switch signal Steering pad switch not operated 4.5 to 5.5 V
    E34-7 (SW1) - E32-7 (GND) BE - BR Steering pad switch signal Seek+ switch pushed Below 0.5 V
    E34-7 (SW1) - E32-7 (GND) BE - BR Steering pad switch signal Seek- switch pushed 0.86 to 0.95 V
    E34-7 (SW1) - E32-7 (GND) BE - BR Steering pad switch signal Volume+ switch pushed 1.91 to 2.01 V
    E34-7 (SW1) - E32-7 (GND) BE - BR Steering pad switch signal Volume- switch pushed 3.23 to 3.57 V
    E34-8 (SW2) - E32-7 (GND) V - BR Steering pad switch signal Steering pad switch not operated 4.5 to 5.5 V
    E34-8 (SW2) - E32-7 (GND) V - BR Steering pad switch signal MODE switch pushed Below 0.5 V
    E34-8 (SW2) - E32-7 (GND) V - BR Steering pad switch signal On hook switch pushed 0.86 to 0.95 V
    E34-8 (SW2) - E32-7 (GND) V - BR Steering pad switch signal Off hook switch pushed 1.91 to 2.01 V
    E34-8 (SW2) - E32-7 (GND) V - BR Steering pad switch signal Voice switch pushed 3.23 to 3.57 V
    E34-15 (ARI) - E32-7 (GND) G - BR Sound signal (Right) External device playing (When stereo jack used) A waveform synchronized with sounds is output
    E34-16 (ASGN) - E32-7 (GND) L - BR Shield ground Always Below 1 V
    E34-17 (ALI) - E32-7 (GND) P - BR Sound signal (Left) External device playing (When stereo jack used) A waveform synchronized with sounds is output
    E34-18 (AGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    E34-19 (AUXI) - E32-7 (GND) SB - BR External device connection detection signal External device connected Below 1 V
    E34-20 (ADIM) - E32-7 (GND) R - BR Illumination (auto dimmer) signal Ignition switch ON, headlight dimmer switch in tail or head and automatic light control sensor covered by hand Above 9 V
    E40-1 (SNS2) - E32-7 (GND) SB - BR Microphone connection detection signal Always Below 1 V
    E40-2 (MIC+) - E32-7 (GND) P - BR Microphone voice signal "Bluetooth" handsfree function on A waveform synchronized with sounds is output
    E40-3 (MACC) - E32-7 (GND) L - BR Microphone amplifier power supply Ignition switch off Below 1 V
    E40-3 (MACC) - E32-7 (GND) L - BR Microphone amplifier power supply Ignition switch ON 4 to 6 V
    E40-5 (MIC-) - E32-7 (GND) G - BR Microphone voice signal "Bluetooth" handsfree function on A waveform synchronized with sounds is output
    E40-6 (SGND) - E32-7 (GND) Shield - BR Shield ground Always Below 1 V
    E35-2 (CDR+) - E32-7 (GND) LG - BR USB audio system sound signal USB audio system playing A Waveform synchronized with sound is output
    E35-3 (CDR-) - E32-7 (GND) BR - BR USB audio system sound signal USB audio system playing A Waveform synchronized with sound is output
    E35-4 (CDL+) - E32-7 (GND) P - BR USB audio system sound signal USB audio system playing A Waveform synchronized with sound is output
    E35-5 (CDL-) - E32-7 (GND) SB - BR USB audio system sound signal USB audio system playing A Waveform synchronized with sound is output
    E35-6 (MUTE) - E32-7 (GND) W - BR Mute signal USB audio system playing Above 3.5 V
    E35-6 (MUTE) - E32-7 (GND) W - BR Mute signal USB audio system changing mode Below 1 V
    E35-7 (GND) - E32-7 (GND) W-B - BR Ground Always Below 1 V
    E35-9 (TXM+) R AVC-LAN communication signal - -
    E35-10 (TXM-) G AVC-LAN communication signal - -
    E35-11 (ACC) - E32-7 (GND) GR - BR Accessory (ON) Ignition switch off Below 1 V
    E35-11 (ACC) - E32-7 (GND) GR - BR Accessory (ON) Ignition switch ACC 11 to 14 V
    E35-12 (+B) - E32-7 (GND) L - BR Battery Always 11 to 14 V
  3. STEREO COMPONENT AMPLIFIER ASSEMBLY (for 12 Speakers) 
    Fig 3: Stereo Component Amplifier Assembly Connector Terminal Identification (For 12 Speakers)
    GTY297394Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    E38-1 (+B) - E38-2 (GND) G - B Battery Always 11 to 14 V
    E38-2 (GND) - Body ground B - Body ground Ground Always Below 1 V
    E38-3 (+B2) - E38-2 (GND) L - B Battery Always 11 to 14 V
    E38-4 (WFR-) - E38-2 (GND) P - B Sound signal (Woofer) Audio system playing A waveform synchronized with sounds is output
    E38-5 (WFR+) - E38-2 (GND) V - B Sound signal (Woofer) Audio system playing A waveform synchronized with sounds is output
    E38-6 (GND2) - Body ground W-B - Body ground Ground Always Below 1 V
    E20-1 (MUTE) - E38-2 (GND) L - B Mute signal Audio system playing Above 3.5 V
    E20-1 (MUTE) - E38-2 (GND) L - B Mute signal Audio system changing sources Below 1 V
    E20-2 (L-) - E38-2 (GND) W - B Sound signal (Left) Audio system playing A waveform synchronized with sounds is output
    E20-3 (L+) - E38-2 (GND) B - B Sound signal (Left) Audio system playing A waveform synchronized with sounds is output
    E20-4 (R-) - E38-2 (GND) G - B Sound signal (Right) Audio system playing A waveform synchronized with sounds is output
    E20-5 (R+) - E38-2 (GND) R - B Sound signal (Right) Audio system playing A waveform synchronized with sounds is output
    E20-7 (TX-) BR AVC-LAN communication signal - -
    E20-8 (TX+) Y AVC-LAN communication signal - -
    E20-11 (SPD) - E38-2 (GND) W - B Vehicle speed signal from combination meter assembly Ignition switch ON
    Drive wheels turned slowly    		 Pulse generation
    E20-12 (ACC) - E38-2 (GND) P - B Accessory (ON) Ignition switch off Below 1 V
    E20-12 (ACC) - E38-2 (GND) P - B Accessory (ON) Ignition switch ACC 11 to 14 V
    E20-14 (INT-) - E38-2 (GND) BR - B Voice signal "Bluetooth" hands-free voice signal transmitted A waveform synchronized with sounds is output
    E20-15 (INT+) - E38-2 (GND) Y - B Voice signal "Bluetooth" hands-free voice signal transmitted A waveform synchronized with sounds is output
    E37-2 (SR+) - E38-2 (GND) BR - B Sound signal (Rear Right) Audio system playing A waveform synchronized with sounds is output
    E37-3 (WF1+) - E38-2 (GND) GR - B Sound signal (Woofer) Audio system playing A waveform synchronized with sounds is output
    E37-6 (SR-) - E38-2 (GND) G - B Sound signal (Rear Right) Audio system playing A waveform synchronized with sounds is output
    E37-7 (SL-) - E38-2 (GND) L - B Sound signal (Rear Left) Audio system playing A waveform synchronized with sounds is output
    E37-8 (SL+) - E38-2 (GND) LG - B Sound signal (Rear Left) Audio system playing A waveform synchronized with sounds is output
    E37-9 (WF1-) - E38-2 (GND) W - B Sound signal (Woofer) Audio system playing A waveform synchronized with sounds is output
    E36-2 (RR+) - E38-2 (GND) R - B Sound signal (Rear Right) Audio system playing A waveform synchronized with sounds is output
    E36-3 (FL+) - E38-2 (GND) P - B Sound signal (Front Left) Audio system playing A waveform synchronized with sounds is output
    E36-4 (RL+) - E38-2 (GND) Y - B Sound signal (Rear Left) Audio system playing A waveform synchronized with sounds is output
    E36-5 (CTR+) - E38-2 (GND) LG - B Sound signal (Front Center) Audio system playing A waveform synchronized with sounds is output
    E36-7 (RR-) - E38-2 (GND) W - B Sound signal (Rear Right) Audio system playing A waveform synchronized with sounds is output
    E36-8 (FL-) - E38-2 (GND) V - B Sound signal (Front Left) Audio system playing A waveform synchronized with sounds is output
    E36-9 (FR-) - E38-2 (GND) G - B Sound signal (Front Right) Audio system playing A waveform synchronized with sounds is output
    E36-10 (FR+) - E38-2 (GND) BE - B Sound signal (Front Right) Audio system playing A waveform synchronized with sounds is output
    E36-11 (RL-) - E38-2 (GND) B - B Sound signal (Rear Left) Audio system playing A waveform synchronized with sounds is output
    E36-12 (CTR-) - E38-2 (GND) BR - B Sound signal (Front Center) Audio system playing A waveform synchronized with sounds is output
  4. MULTI-MEDIA INTERFACE ECU 
    Fig 4: Multi-Media Interface ECU Connector Terminal Identification
    GTY296963Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    E41-1 (USD1) - Body ground Shield - Body ground Shield ground Always Below 1 V
    E41-2 (URO+) - E41-7 (GND) LG - W-B USB audio system sound signal USB audio system playing A waveform synchronized with sounds is output
    E41-3 (URO-) - E41-7 (GND) BR - W-B USB audio system sound signal USB audio system playing A waveform synchronized with sounds is output
    E41-4 (ULO+) - E41-7 (GND) P - W-B USB audio system sound signal USB audio system playing A waveform synchronized with sounds is output
    E41-5 (ULO-) - E41-7 (GND) SB - W-B USB audio system sound signal USB audio system playing A waveform synchronized with sounds is output
    E41-6 (MUT1) - E41-7 (GND) W - W-B Mute signal USB audio system playing Above 3.5 V
    E41-6 (MUT1) - E41-7 (GND) W - W-B Mute signal USB audio system changing mode Below 1 V
    E41-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 V
    E41-9 (TX1+) R AVC-LAN communication signal - -
    E41-10 (TX1-) G AVC-LAN communication signal - -
    E41-11 (ACC) - E41-7 (GND) GR - W-B Accessory (ON) Ignition switch off Below 1 V
    E41-11 (ACC) - E41-7 (GND) GR - W-B Accessory (ON) Ignition switch ACC 11 to 14 V
    E41-12 (+B) - E41-7 (GND) L - W-B Battery Always 11 to 14 V
    E46-1 (UESG) - Body ground - Body ground Ground Always Below 1 V
    E46-2 (UDI+) - Data signal USB device or "iPod" connected -
    E46-3 (UDI-) - Data signal USB device or "iPod" connected -
    E46-4 (UPO) - E46-1 (UESG) - Battery Ignition switch ACC 5 V
    E46-5 (UESS) - Body ground Shield - Body ground Shield ground Always Below 1 V
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