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Terminals Of Ecu

  1. AIR CONDITIONING AMPLIFIER 
    Fig 1: Identifying ECU Connector Terminals
    G05243938Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    Check from the rear of the connector with it connected to the air conditioning amplifier.

    TERMINAL DESCRIPTION AND SYMBOLS REFERENCE

    Terminal No. (Symbols) Wiring color Terminal Description Condition Specification
    A10-2 (IG) - A10-11 (GND) BR - W-B Main power supply Ignition switch: LOCK or ACC Below 1 V
    A10-2 (IG) - A10-11 (GND) BR - W-B Main power supply Ignition switch: ON 10 to 14 V
    A10-4 (MR/F) - A10-6 (AIF) Y - W Recirculation damper servomotor operation Ignition switch: ON
    R/F switch: RECIRCULATION    		 Below 1 V
    A10-4 (MR/F) - A10-6 (AIF) Y - W Recirculation damper servomotor operation Ignition switch: ON
    R/F switch: FRESH    		 10 to 14 V
    A10-4 (MR/F) - A10-5 (AIR) Y - B Recirculation damper servomotor operation Ignition switch: ON
    R/F switch: RECIRCULATION    		 Below 1 V
    A10-4 (MR/F) - A10-5 (AIR) Y - B Recirculation damper servomotor operation Ignition switch: ON
    R/F switch: FRESH    		 10 to 14 V
    A10-7 (HR) - A10-11 (GND) O - W-B Blower speed operation signal Ignition switch: ON
    Blower switch: ON    		 Below 1 V
    A10-7 (HR) - A10-11 (GND) O - W-B Blower speed operation signal Ignition switch: ON
    Blower switch: OFF    		 10 to 14 V
    A10-8 (F)(1) - A10-11 (GND) R - W-B Flasher relay operation signal Ignition switch: ON
    Flasher relay: ON    		 Below 1 V
    A10-8 (F)(1)-A10-11 (GND) R - W-B Flasher relay operation signal Ignition switch: ON
    Flasher relay: OFF    		 10 to 14 V
    A10-9 (MPX-) - A10-11 (GND) G - W-B Multiplex communication signal Ignition switch: ON Pulse generation
    A10-10 (FDEF) - A10-11 (GND) P - W-B Deicer relay operation signal Ignition switch: ON
    Deicer relay: ON    		 Below 1 V
    A10-10 (FDEF) - A10-11 (GND) P - W-B Deicer relay operation signal Ignition switch: ON
    Deicer relay: OFF    		 10 to 14 V
    A10-11 (GND) - Body ground W-B - Body ground Ground for main power supply Always Below 1 V
    A10-12 (+B) - A10-11 (GND) W - W-B Back up power supply Always 10 to 14 V
    A10-13 (ACC) - A10-11 (GND) GR - W-B Power supply for accessories Ignition switch: ACC 10 to 14 V
    A10-13 (ACC) - A10-11 (GND) GR - W-B Power supply for accessories Ignition switch: except ACC Below 1 V
    A10-14 (DIM) - A10-11 (GND) SB - W-B Air bag ON/OFF indicator Dimmer signal Ignition switch: ON
    Light switch: OFF    		 10 to 14 V
    A10-14 (DIM) - A10-11 (GND) SB - W-B Air bag ON/OFF indicator Dimmer signal Ignition switch: ON
    Light switch: TAIL or HEAD Any occupant is detected in the front passenger seat    		 1 to 2V
    A10-15 (ILL+)(1) - A10-21 (ILL-)(1) V - Y Illumination signal Light switch: TAIL or HEAD 10 to 14 V
    A10-17 (BLW) - A10-11 (GND) LG - W-B Blower speed operation signal Ignition switch: ON
    Blower switch: OFF→ LO, M1, M2, M3, HI    		 Pulse generation (See  awaveform 1)
    A10-18 (RDEF) - A10-11 (GND) L - W-B Rear defogger relay operation signal Ignition switch: ON
    Rear defogger relay: ON    		 Below 1 V
    A10-18 (RDEF) - A10-11 (GND) L - W-B Rear defogger relay operation signal Ignition switch: ON
    Rear defogger relay: OFF    		 10 to 14 V
    A10-20 (S5) - A10-11 (GND) SB - W-B Humidity sensor signal Ignition switch: ON
    Cabin humidity: 40 %    		 2.0 V
    A10-20 (S5) - A10-11 (GND) SB - W-B Humidity sensor signal Ignition switch: ON
    Cabin humidity: 60 %    		 2.5 V
    A11-1 (SG-4) - A11-9 (S5-4) B - BR Power supply for air outlet control servomotor Ignition switch: ON
    Mode switch: FACE    		 Below 1 V
    A11-1 (SG-4) - A11-9 (S5-4) B - BR Power supply for air outlet control servomotor Ignition switch: ON
    Mode switch: DEF    		 10 to 14 V
    A11-2 (MPX+) - A10-11 (GND) V - W-B Multiplex communication signal Ignition switch: ON Pulse generation
    A11-3 (SG-3) - A11-4 (TR) Y - W Room temperature sensor signal Ignition switch: ON
    Cabin temperature: 25°C (77°F)    		 1.8 to 2.2 V
    A11-3 (SG-3) - A11-4 (TR) Y - W Room temperature sensor signal Ignition switch: ON
    Cabin temperature: 40°C (104°F)    		 1.3 to 1.7 V
    A11-5 (TE) - A11-12 (SG-1) LG - P Evaporator temperature sensor signal Ignition switch: ON
    Evaporator temperature: 0°C (32°F)    		 2.2 to 2.6 V
    A11-5 (TE) - A11-12 (SG-1) LG - P Evaporator temperature sensor signal Ignition switch: ON
    Evaporator temperature: 15°C (59°F)    		 1.3 to 1.7 V
    A11-6 (TPO) - A11-1 (SG-4) R - B Air outlet control servomotor operation Ignition switch: ON
    Mode switch: DEF    		 0.5 to 1.5 V
    A11-6 (TPO) - A11-1 (SG-4) R - B Air outlet control servomotor operation Ignition switch: ON
    Mode switch: FACE    		 3.5 to 4.5 V
    A11-7 (AOD) - A10-11 (GND) G - W-B Air outlet control servomotor operation Ignition switch: ON
    Mode switch: DEF    		 10 to 14 V
    A11-7 (AOD) - A10-11 (GND) G - W-B Air outlet control servomotor operation Ignition switch: ON
    Mode switch: FACE    		 Below 1 V
    A11-8 (AOF) - A10-11 (GND) V - W-B Air outlet control servomotor operation Ignition switch: ON
    Mode switch: DEF    		 Below 1 V
    A11-8 (AOF) - A10-11 (GND) V - W-B Air outlet control servomotor operation Ignition switch: ON
    Mode switch: FACE    		 10 to 14 V
    A11-9 (S5-4) - A11-1 (SG-4) BR - B Power supply for air outlet control servomotor Ignition switch: ON 4.5 to 5.5 V
    A11-10 (TP) - A11-12 (SG-1) SB - P Air mix damper control servomotor operation signal Ignition switch: ON
    Set temperature: MAX. HOT    		 0.5 to 1.5 V
    A11-10 (TP) - A11-12 (SG-1) SB-P Air mix damper control servomotor operation signal Ignition switch: ON
    Set temperature: MAX. COOL    		 3.5 to 4.5 V
    A11-11 (S5-1) - A11-12 (SG-1) O - P Power supply for air mix damper servomotor Ignition switch: ON 4.5 to 5.5 V
    A11-12 (SG-1) - Body ground P - Body ground Ground for air mix damper servomotor Always Below 1 V
    A11-13 (AMC) - A10-11 (GND) GR - W-B Air mix damper servomotor operation signal Ignition switch: ON
    Set temperature: MAX. HOT    		 Below 1 V
    A11-13 (AMC) - A10-11 (GND) GR - W-B Air mix damper servomotor operation signal Ignition switch: ON
    Set temperature: MAX. COOL    		 10 to 14 V
    A11-14 (AMH) - A10-11 (GND) B - W-B Air mix damper servomotor operation signal Ignition switch: ON
    Set temperature: MAX. HOT    		 10 to 14 V
    A11-14 (AMH) - A10-11 (GND) B - W-B Air mix damper servomotor operation signal Ignition switch: ON
    Set temperature: MAX. COOL    		 Below 1 V
    A11-15 (S5-3) - A11-16 (TS) W - L Solar sensor signal Ignition switch: OFF
    Solar sensor subject to electric light    		 4.5 to 5.5 V
    A11-15 (S5-3) - A11-16 (TS) W - L Solar sensor signal Ignition switch: ON
    Solar sensor is covered by a cloth    		 Below 4 V
    (1) w/o Navigation System
    1. Waveform 1 :
      1. Measure the waveform between terminal BLW (A10-17) of the A/C amplifier and body ground.
        Fig 2: Identifying Waveform 1 Signal Reference
        G05242130Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        OK: Waveform appears as shown in the illustration. 

        HINT:

        Waveform cycle varies with the blower level.

  2. HYBRID VEHICLE CONTROL ECU 
    Fig 3: Identifying Hybrid Vehicle Control ECU Terminals
    G05203176Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    Check from the rear of the connector with it connected to the hybrid vehicle control ECU.

    TERMINAL DESCRIPTION AND SYMBOLS REFERENCE

    Terminal No. (Symbols) Wiring color Terminal Description Condition Specified condition
    H17-13 (PR2) - H17-20 (HP) L-W - L-B A/C Pressure sensor signal Ignition switch: ON
    A/C switch: ON
    Refrigerant pressure: 0.196 to 3.14 Mpa (32 kgf/ cm2 )    		 Below 1 V
    H17-13 (PR2) - H17-20 (HP) L-W - L-B A/C Pressure sensor signal Ignition switch: ON
    A/C switch: ON
    Refrigerant pressure: Below 0.196 Mpa (2.0 kgf/ cm2 ) or more than 3.14 Mpa    		 10 to 14 V
    H17-19 (TAM) - H15-28 (E2) Y - BR Ambient temperature sensor signal Ignition switch: ON
    at 25°C (77°F)    		 1.8 to 2.2 V
    H17-19 (TAM) - H15-28 (E2) Y - BR Ambient temperature sensor signal Ignition switch: ON
    at 40°C (104°F)    		 1.2 to 1.6 V
    H16-14 (CLK) - Body ground G - Body ground Compressor operation signal Ignition switch: ON Pulse generation (See  awaveform A)
    H16-15 (ITE) - Body ground W - Body ground Compressor operation signal Ignition switch: ON Pulse generation (See  bwaveform B)
    H16-16 (ETI) - Body ground Y - Body ground Compressor operation signal Ignition switch: ON Pulse generation (See  cwaveform C)
    H16-18 (STB) - Body ground B - Body ground Compressor operation signal Ignition switch: ON 10 to 14 V
    H16-18 (STB) - Body ground B - Body ground Compressor operation signal Ignition switch: ON Below 1 V
    H17-4 (WP) - Body ground L - Body ground Water pump operation signal Not operate the heater water pump 10 to 14 V
    H17-4 (WP) - Body ground L - Body ground Water pump operation signal Operate the heater water pump Below 1 V
    1. Waveform A:
      1. Measure the waveform between terminal CLK (H16-14) of the hybrid vehicle control ECU and body ground.
        Fig 4: Identifying Waveform (A) Signal Reference
        G05012116Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        OK: Waveform appears as shown in the illustration. 

        HINT:

        Waveform cycle varies with the communication contents.

    2. Waveform B:
      1. Measure the waveform between terminal ITE (H16-15) of the hybrid vehicle control ECU and body ground.
        Fig 5: Identifying Waveform (B) Signal Reference
        G05012117Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        OK: Waveform appears as shown in the illustration. 

        HINT:

        Waveform cycle varies with the communication contents.

    3. Waveform C:
      1. Measure the waveform between terminal ETI (H16-16) of the hybrid vehicle control ECU and body ground.
        Fig 6: Identifying Waveform (C) Signal Reference
        G05203179Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        OK: Waveform appears as shown in the illustration. 

        HINT:

        Waveform cycle varies with the communication contents.

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