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Terminals Of Ecu

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FRONT AIR CONDITIONING AMPLIFIER 
    Fig 1: Identifying Front Air Conditioning Amplifier Terminals
    G04440422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    FRONT AIR CONDITIONING AMPLIFIER TERMINALS REFERENCE

    Symbols (Terminal No.) Wiring Color Condition Specified Condition
    AIF (A45-1) - GND (A47-12) G-W - W-B IG ON. Air inlet control switch "FRESH" Battery voltage
    IG ON. Air inlet control switch "RECIRC" Below 1.0 V
    AIR (A45-2) - GND (A47-12) LG-B - W-B IG ON. Air inlet control switch "RECIRC" Battery voltage
    IG ON. Air inlet control switch "FRESH" Below 1.0 V
    MRRHR (A45-6) - GND (A47-12) R - W-B IG ON. Mirror heater switch "OFF" Battery voltage
    IG ON. Mirror heater switch "ON" Below 1.0 V
    MGC (A45-7) - GND (A47-12) L - W-B Compressor does not operate Battery voltage
    Compressor operates Below 1.0 V
    FRHR (A45-9) - GND (A47-12) Y-R - W-B IG ON. Front A/C blower motor does not operate Battery voltage
    IG ON. Front A/C blower motor operates Below 1.0 V
    RDFGR (A45-10) - GND (A47-12) LG - W-B IG ON. Rear defogger switch "OFF" Battery voltage
    IG ON. Rear defogger switch "ON" Below 1.0 V
    AC1 (A45-11) - GND (A47-12) W-G - W-B Compressor does not operate Battery voltage
    Compressor operates Below 1.0 V
    DEF (A45-12) - GND (A47-12) B-W - W-B IG ON. Mode control switch "Except DEF" Battery voltage
    IG ON. Mode control switch "DEF" Below 0.7 V
    F/D (A45-13) - GND (A47-12) P-L - W-B IG ON. Mode control switch "Except FOOT/DEF" Battery voltage
    IG ON. Mode control switch "FOOT/DEF" Below 0.7 V
    FOOT (A45-14) - GND (A47-12) W - W-B IG ON. Mode control switch "Except FOOT/DEF" Battery voltage
    IG ON. Mode control switch "FOOT/DEF" Below 0.7 V
    B/L (A45-15) - GND (A47-12) BR-W - W-B IG ON. Mode control switch "Except BI-LEVEL" Battery voltage
    IG ON. Mode control switch "BILEVEL" Below 0.7 V
    FACE (A45-16) - GND (A47-12) GR - W-B IG ON. Mode control switch "Except FACE" Battery voltage
    IG ON. Mode control switch "FACE" Below 0.7 V
    FRAMH (A45-21) - GND (A47-12) P-B - W-B IG ON. Temperature control dial "MAX. WARM" Battery voltage
    IG ON. Temperature control dial "MAX. COOL" Below 1.0 V
    FRAMC (A45-22) - GND (A47-12) P-G - W-B IG ON. Temperature control dial "MAX. COOL" Battery voltage
    IG ON. Temperature control dial "MAX. WARM" Below 1.0 V
    FRBLW (A45-23) - GND (A47-12) W-R - W-B IG ON. Front A/C blower motor does not operate Battery voltage
    IG ON. Front A/C blower motor operates Pulse generation
    HZD (A45-24)* - GND (A47-12) W - W-B Hazard switch "ON" Continuity
    DEFC (A45-27)* - GND (A47-12) R-L - W-B Diff. lock switch "ON" Continuity
    ANTU (A45-28)* - GND (A47-12) L-Y - W-B Push in antenna up switch Continuity
    ANTD (A45-29)* - GND (A47-12) L-W - W-B Push in antenna down switch Continuity
    RRMGV (A45-40) - GND (A47-12) LG-R - W-B IG ON. Rear cooler switch "OFF" Battery voltage
    IG ON. Rear cooler switch "ON" Below 1.0 V
    FRTP (A46-5) - FRSG (A46-18) B-Y - Y-G IG ON. Temperature control dial "MAX. COOL" Approx. 4.0 V
    IG ON. Temperature control dial "MAX. WARM" Approx. 1.0 V
    TAM (A46-7) - FRSG (A46-18) L-Y - Y-G IG ON. Ambient temperature at 25°C (77°F) 1.35 to 1.75 V
    TS (A46-8) - FRSG (A46-18) B-Y - Y-G IG ON. Sensor subject electric light 0.8 to 4.3 V
    IG ON. Sensor covered by a cloth Below 0.8 V
    FRS5 (A46-9) - FRSG (A46-18) G-R - Y-G Turn ignition switch "ON" 5.0 V
    Turn ignition switch "OFF" No voltage
    TPI (A46-14) - FRSG (A46-18) L-R - Y-G IG ON. Air inlet control switch "FRESH" Approx. 1.0 V
    IG ON. Air inlet control switch "RECIRC" Approx. 4.0 V
    FRTE (A46-16) - FRSG (A46-18) GR-B - Y-G IG ON. Evaporator temperature at 15°C (59°F) 1.4 to 1.8 V
    FRTR (A46-17) - FRSG (A46-18) B - Y-G IG ON. Cabin temperature at 25°C (77°F) 1.8 to 2.2 V
    FRSG (A46-18) - Body ground Y-G - Body ground Always Continuity
    ACT (A47-4) - GND (A47-12) L-B - W-B Compressor operates Below 1.0 V
    Compressor does not operate No voltage
    TW (A47-5) - GND (A47-12) Y-B - W-B IG ON. Pulse generation
    SPD (A47-6) - GND (A47-12) V - W-B Turn propeller shaft slowly Pulse generation
    PSW (A47-8) - GND (A47-12) L-W - W-B A/C refrigerant pressure: less than 0.9 MPa (2.0 kgf/cm2 , 28.4 psi) or more than 3.14 MPa (32 kgf/cm2 , 454.4 psi) From 10 to 14 V to below 1.0 V
    +B (A47-11) - GND (A47-12) L-W - W-B Always Battery voltage
    GND (A47-12) - Body ground W-B - Body ground Always Continuity
    VER5 (A47-14) - GND (A47-12) W-B - W-B Always Continuity
    VER4 (A47-15)* - GND (A47-12) W-B - W-B Always Continuity
    VER2 (A47-17) - GND (A47-12) W-B - W-B Always Continuity
    VER1 (A47-18) - Body ground W-B - Body ground Always Continuity
    IG (A47-22) - GND (A47-12) R-L-W-B IG ON. Light control switch "ON" Battery voltage
    IG ON. Light control switch "OFF" No voltage

    HINT:

    *: w/o Navigation system

  2. CHECK REAR AIR CONDITIONING AMPLIFIER 
    Fig 2: Identifying Rear Air Conditioning Amplifier Terminals
    G04440423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    REAR AIR CONDITIONING AMPLIFIER TERMINALS REFERENCE

    Symbols (Terminal No.) Wiring Color Condition Specified Condition
    +B (A32-1) - GND (A32-22) L-W - W-B Always Battery voltage
    IG1 (A32-2) - GND (A32-22) B-W - W-B IG ON. Battery voltage
    VMRC (A32-3) - GND (A32-22) W-L - W-B Rr FACE mode. Rr blower switch: LO --> MIDDLE --> HI 7.2 --> 4.2 --> 0.5 V
    BLWRC (A32-4) - GND (A32-22) R - W-B Rr FACE mode. Rr blower switch: OFF --> LO Below 1.0 V --> 1.5 to 3.0 V
    S51 (A32-5) - SG1 (A32-9) R-Y - Y-G IG ON. 4.5 to 5.5 V
    TPR (A32-6) - SG1 (A32-9) GR-R - Y-G Rr temp. control switch: Max. COOL --> Max. HOT 4.0 to 1.0 V
    TER (A32-7) - SG1 (A32-9) Y - Y-G Rr evaporator temp.: 0°C (32°F) 2.0 to 2.4 V
    Rr evaporator temp.: 15°C (59°F) 2.0 to 2.4 V
    TINR (A32-8) - SG1 (A32-9) GR-G - Y-G Rr inlet air temp.: 25°C (77°F) 1.5 to 1.9 V
    Rr inlet air temp.: 40°C (104°F) 1.2 to 1.6 V
    SG1 (A32-9) - GND (A32-22) Y-G - W-B Always Continuity
    MCR (A32-11) - GND (A32-22) W-L - W-B Rr temp. control switch: Max.
    HOT --> Max. COOL    		 Below 1.0 V --> Battery voltage for 16 sec.
    MHR (A32-12) - GND (A32-22) Y - W-B Rr temp. control switch: Max.
    COOL --> Max. HOT    		 Below 1.0 V --> Battery voltage for 16 sec.
    HRRC (A32-13) - GND (A32-22) R-Y - W-B Rr FACE mode. Rr blower control switch: OFF --> LO Battery voltage --> Below 1.0 V
    HRRH (A32-14) - GND (A32-22) L-B - W-B Rr FOOT mode. Rr blower control switch: OFF --> LO Battery voltage --> Below 1.0 V
    VMRH (A32-15) - GND (A32-22) R-W - W-B Rr FOOT mode. Rr blower control switch: LO --> MIDDLE --> HI 7.2 --> 4.2 --> 0.5 V
    BLWRH (A32-16) - GND (A32-22) R-G - W-B Rr FOOT mode. Rr blower control switch: OFF --> LO Below 1.0 V --> 1.5 to 3.0 V
    CID (A32-18) - GND (A32-22) B - W-B IG ON. Pulse generation
    CSD (A32-19) - GND (A32-22) R - W-B IG ON. Pulse generation
    CLK (A32-20) - GND (A32-22) W - W-B IG ON. Pulse generation
    GND (A32-22) - Body ground W-B - Body ground Always Continuity
    IG2 (A33-1) - RG (A34-8) L-R - G-W IG ON. 10 to 14 V
    S52 (A33-4) - SG2 (A33-12) Y-R - G-Y IG ON. 4.5 to 5.5 V
    ILL+2 (A33-5) - RG (A34-8) G - G-W IG ON. Light switch OFF --> TAIL 0 --> Below 1.0 V
    TRR (A33-7) - SG2 (A33-12) B - G-Y IG ON. Rr room temperature: 25°C (77°F) 1.8 to 2.2 V
    IG ON. Rr room temperature: 40°C (104°F) 1.2 to 1.6 V
    TSETR (A33-8) - SG2 (A33-12) L-O - G-Y Rr temperature control switch: Max. COOL --> Max. HOT 5.0 --> 0 V
    SG2 (A33-12) - SG1 (A32-9) G-Y - Y-G Always Continuity
    AUTO-S (A34-1) - RG (A34-8) W-G - G-W Rr A/C control panel AUTO switch: OFF --> ON (during pushed switch) Battery voltage --> Below 1.0 V
    OFF-S (A34-2) - RG (A34-8) Y-B - G-W Rr A/C control panel OFF switch: OFF --> ON (during pushed switch) Battery voltage --> Below 1.0 V
    LO-S (A34-3)- RG (A34-8) GR - G-W Rr A/C control panel LO switch: OFF --> ON (during pushed switch) Battery voltage --> Below 1.0 V
    ME-S (A34-4) - RG (A34-8) L-Y - G-W Rr A/C control panel ME switch: OFF --> ON (during pushed switch) Battery voltage --> Below 1.0 V
    AUTO-I (A34-5) - GND (A32-22) L-R - W-B Rr A/C control panel switch: except AUTO --> AUTO Battery voltage --> Below 1.0 V
    LO-I (A34-6) - GND (A32-22) L-W - W-B Rr A/C control panel switch: except LO --> LO Battery voltage --> Below 1.0 V
    ME-I (A34-7) - GND (A32-22) L - W-B Rr A/C control panel switch: except MIDDLE --> MIDDLE Battery voltage --> Below 1.0 V
    RG (A34-8) - GND (A32-22) G-W - W-B Always Continuity
    HI-S (A34-9) - GND (A32-22) GR-R - W-B Rr A/C control panel HI switch: OFF --> ON (during pushed switch) Battery voltage --> Below 1.0 V
    FACE-S (A34-10) - GND (A32-22) R-L - W-B Rr A/C control panel FACE switch: OFF --> ON (during pushed switch) Battery voltage --> Below 1.0 V
    B/L-S (A34-11) - GND (A32-22) R-Y - W-B Rr A/C control panel B/L switch: OFF --> ON (during pushed switch) Battery voltage --> Below 1.0 V
    FOOT/S (A34-12) - GND (A32-22) R-G - W-B Rr A/C control panel FOOT switch: OFF --> ON (during pushed switch) Battery voltage --> Below 1.0 V
    FACE-I (A34-15) - GND (A32-22) G - W-B Rr A/C control panel switch: except FACE --> FACE Battery voltage --> Below 1.0 V
    B/L-I (A34-16) - GND (A32-22) W-G - W-B Rr A/C control panel switch: except B/L --> B/L Battery voltage --> Below 1.0 V
    FOOT-I (A34-17) - GND (A32-22) W-R - W-B Rr A/C control panel switch: except FOOT --> FOOT Battery voltage --> Below 1.0 V
    HI-I (A34-18) - GND (A32-22) L - W-B Rr A/C control panel switch: except HI --> HI Battery voltage --> Below 1.0 V
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