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Home >> Toyota >> 2018 >> Corolla LE >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge / Display - Diagnostics - Introduction (2 Of 2) (Model Code: ZRE172) >> Meter / Gauge System >> Terminals Of Ecu [08/2013 - 04/2014] >> Terminals Of Ecu [08/2013 - 04/2014]

Terminals Of Ecu [08/2013 - 04/2014]

  1. COMBINATION METER ASSEMBLY 
    Fig 1: Combination Meter Assembly Connector End View
    GTY450038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E43-2 (ILL-) - Body ground W - Body ground Illumination signal Headlight dimmer switch off Below 1 V
      Headlight dimmer switch in tail or head position Pulse generation
      E43-4 (EP) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E43-5 (SI) - Body ground R - Body ground Speed signal for other system (Input) Ignition switch ON, wheel being rotated Pulse generation (See waveform 1)
      E43-6 (+S) - Body ground V - Body ground Speed signal for other system (Output) Ignition switch ON, wheel being rotated Pulse generation (See waveform 1)
      E43-9 (S) - Body ground V - Body ground Oil pressure signal Idling 11 to 14 V
      Ignition switch ON Below 1 V
      E43-10 (WLVE)*1 - Body ground L - Body ground Washer fluid level signal Ignition switch ON, washer fluid level not low 11 to 14 V
      Ignition switch ON, washer fluid level low Below 1 V
      E43-11 (CHK) - Body ground LG - Body ground MIL (Check engine warning light) signal Ignition switch ON, MIL off 11 to 14 V
      Ignition switch ON, MIL on Below 1 V
      E43-12 (SW) - Body ground B - Body ground Brake fluid level signal Ignition switch ON, brake fluid level not low 11 to 14 V
      Ignition switch ON, brake fluid level low Below 1 V
      E43-13 (CHG-)*2 - Body ground G - Body ground Charge warning signal Ignition switch ON, charge warning light off or "Charge warning (Charge warning symbol)" not displayed Below 1 V
      Ignition switch ON, charge warning light on or "Charge warning (Charge warning symbol)" displayed 11 to 14 V
      E43-14 (-) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E43-16 (L) - E43-15 (E) V - BR Fuel level signal Ignition switch ON, fuel level warning off Below 1 V
      Ignition switch ON, fuel level warning on 4.5 to 9 V
      E43-17 (TC) - Body ground Y - Body ground Light control rheostat signal (Tail cancel switch) Ignition switch ON, light control rheostat knob not fully turned upward (Tail cancel switch off) 1 to 6 V
      Ignition switch ON, light control rheostat fully turned upwards (Tail cancel switch on) Below 1 V
      E43-19 (+) - Body ground R - Body ground High beam signal Ignition switch ON, high beam off Below 1 V
      Ignition switch ON, high beam on 11 to 14 V
      E43-21 (ET) - Body ground BR - Body ground Ground Always Below 1 Ω
      E43-28 (SW1) - Body ground R - Body ground Steering pad switch assembly (DISP switch) signal Ignition switch ON, DISP switch not pressed 11 to 14 V
      Ignition switch ON, DISP switch pressed Below 1 V
      E43-31 (CANL) - Body ground W - Body ground CAN communication line - -
      E43-32 (CANH) - Body ground LG - Body ground CAN communication line - -
      E43-33 (SW3) - Body ground R - Body ground Light control rheostat signal (Rheostat ground) Always Below 1 Ω
      E43-35 (TX1+) - E43-34 (TX1-) G - W Ambient temperature sensor signal
      • Ignition switch ON
      • Ambient temperature: 25°C (77°F)
      		 1.5 to 2.5 V
      E43-36 (SW2) - Body ground B - Body ground Light control rheostat signal Ignition switch ON, light control rheostat knob not fully turned upward (Tail cancel switch off) 1 to 6 V
      (Gradually change)
      E43-37 (SW1) - Body ground L - Body ground Light control rheostat signal Always 4 to 6 V
      E43-39 (IG+) - Body ground P - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      E43-40 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      E47-1 (B) - Body ground B - Body ground Battery Always 11 to 14 V
      E47-3 (HAZ) - Body ground GR - Body ground Hazard warning switch signal Ignition switch ON, hazard warning switch not pressed 11 to 14 V
      Ignition switch ON, hazard warning switch pressed Below 1 V
      E47-7 (LR) - Body ground L - Body ground RH turn indicator light signal (Output) Ignition switch ON, RH turn indicator light off Below 1 V
      Ignition switch ON, RH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      E47-9 (ER) - Body ground P - Body ground RH turn indicator light signal (Input) Ignition switch ON, RH turn signal switch off 11 to 14 V
      Ignition switch ON, RH turn signal switch on Below 1 V
      E47-10 (EL) - Body ground LG - Body ground LH turn indicator light signal (Input) Ignition switch ON, LH turn signal switch off 11 to 14 V
      Ignition switch ON, LH turn signal switch on Below 1 V
      E47-12 (FOG)*3 - Body ground G - Body ground Front fog indicator light signal Ignition switch ON, front fog indicator light off Below 1 V
      Ignition switch ON, front fog indicator light on 11 to 14 V
      E47-13 (LL) - Body ground Y - Body ground LH turn indicator light signal (Output) Ignition switch ON, LH turn indicator light off Below 1 V
      Ignition switch ON, LH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      • *1: w/ Washer fluid level warning
      • *2: w/o Battery current sensor
      • *3: w/ Front fog light
      1. Waveform 1 (Reference):
        GTY436922Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Condition
        Tool setting 5 V/DIV., 20 ms./DIV.
        Vehicle condition Ignition switch ON, wheel being rotated

        HINT: 

        When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

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