METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    B000KMHE04

    1. Measure the voltage and resistance according to the value(s) in the table below.

      except TMMK Made
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I18-1 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      I18-3 (+S) - Body ground V - Body ground Speed signal for other system (Output) Ignition switch ON, wheel being rotated

      Pulse generation

      (See waveform 1)
      I18-4 (SI) - Body ground P - Body ground Speed signal for other system (Input) Ignition switch ON, wheel being rotated

      Pulse generation

      (See waveform 1)
      I18-5 (OILW) - Body ground*1 B - Body ground Engine oil level signal Ignition switch ON, engine oil level not low 11 to 14 V
      Ignition switch ON, engine oil level low Below 1 V
      I18-6 (VSW) - Body ground*1 G - Body ground Vacuum warning switch signal Engine started, vacuum warning switch off (brake warning light off) 11 to 14 V
      Engine started, vacuum warning switch on (brake warning light on) Below 1 V
      I18-8 (S) - Body ground*2 B - Body ground Oil pressure signal Engine started 11 to 14 V
      Engine not started Below 1 V
      I18-9 (SW) - Body ground B - Body ground Brake fluid level signal Ignition switch ON, brake fluid level not low (brake warning light off) 11 to 14 V
      Ignition switch ON, brake fluid level low (brake warning light on) Below 1 V
      I18-13 (IG+) - Body ground L - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      I18-14 (FR) - I18-15 (FE) GR - V Fuel level signal Ignition switch ON, fuel level low (fuel level warning light on) 4.5 to 9 V
      Ignition switch ON, fuel level full Below 1 V
      I18-16 (CANL) - Body ground W - Body ground CAN communication line - -
      I18-17 (CANH) - Body ground R - Body ground CAN communication line - -
      I18-18 (MSCH) - Body ground*4, *5 GR - Body ground Local bus communication line - -
      I18-19 (MSCL) - Body ground*4, *5 W - Body ground Local bus communication line - -
      I18-20 (ES) - Body Ground BR - Body ground Ground Always Below 1 Ω
      I18-21 (MSSL) - Body ground B - Body ground Ground Always Below 1 Ω
      I18-22 (MSTI) - Body ground V - Body ground Steering pad switch assembly signal Ignition switch ON, up, down, back and page switches on steering pad switch assembly not pushed 4 to 6 V
      I18-23 (MSM+) - Body ground L - Body ground Steering pad switch assembly signal Ignition switch ON, enter switch on steering pad switch assembly not pushed 4 to 6 V
      I18-24 (WLVL) - Body ground LG - 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
      I17-1 (B) - Body ground R - Body ground Battery Always 11 to 14 V
      I17-4 (CHG-) - Body ground SB - Body ground Charge warning signal Ignition switch ON, "Charging System Malfunction See Owner's Manual" not displayed 11 to 14 V
      Ignition switch ON, "Charging System Malfunction See Owner's Manual" displayed Below 1 V
      I17-5 (HAZ) - Body ground W - Body ground Hazard warning switch signal Ignition switch ON, hazard warning signal switch not pressed 11 to 14 V
      Ignition switch ON, hazard warning signal switch pressed Below 1 V
      I17-7 (LL) - Body ground R - 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
      I17-8 (SW) - Body ground G - Body ground Turn signal switch signal Ignition switch ON, LH and RH turn signal switch off 11 to 14 V
      Ignition switch ON, LH or RH turn signal switch on Below 1 V
      I17-9 (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
      I17-10 (EL) - Body ground L - 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
      I17-11 (LVWG) - Body ground*3 P - Body ground Headlight leveling signal Ignition switch ON, "Check Headlight System" not displayed 11 to 14 V
      Ignition switch ON, "Check Headlight System" displayed Below 1 V
      I17-12 (CHK) - Body ground R - 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
      I17-13 (LR) - Body ground G - 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

      • *1: for 6AR-FSE

      • *2: except 6AR-FSE

      • *3: w/ Automatic Headlight Beam Level Control System

      • *4: for Navigation Receiver Type

      • *5: for Radio and Display Type

      for TMMK Made
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I18-1 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      I18-3 (+S) - Body ground V - Body ground Speed signal for other system (Output) Ignition switch ON, wheel being rotated

      Pulse generation

      (See waveform 1)
      I18-4 (SI) - Body ground P - Body ground Speed signal for other system (Input) Ignition switch ON, wheel being rotated

      Pulse generation

      (See waveform 1)
      I18-8 (S) - Body ground B - Body ground Oil pressure signal Engine started 11 to 15 V
      Engine not started Below 1 V
      I18-9 (SW) - Body ground B - Body ground Brake fluid level signal Ignition switch ON, brake fluid level not low (brake warning light off) 11 to 14 V
      Ignition switch ON, brake fluid level low (brake warning light on) Below 1 V
      I18-11 (EP) - Body Ground W-B - Body ground Ground Always Below 1 Ω
      I18-12 (ILL-) - Body ground SB - Body ground Illumination signal Headlight dimmer switch off Below 1 V
      Headlight dimmer switch in tail or head position Pulse generation
      I18-13 (IG+) - Body ground L - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      I18-14 (FR) - 18-15 (FE) GR - V Fuel level signal Ignition switch ON, fuel level low (fuel level warning light on) 4.5 to 9 V
      Ignition switch ON, fuel level full Below 1 V
      I18-16 (CANL) - Body ground W - Body ground CAN communication line - -
      I18-17 (CANH) - Body ground R - Body ground CAN communication line - -
      I18-18 (MSCH) - Body ground GR - Body ground Local bus communication line - -
      I18-19 (MSCL) - Body ground W - Body ground Local bus communication line - -
      I18-20 (ES) - Body Ground BR - Body ground Ground Always Below 1 Ω
      I18-21 (MSSL) - Body ground P - Body ground Ground Always Below 1 Ω
      I18-22 (MSTI) - Body ground V - Body ground Steering pad switch assembly signal Ignition switch ON, up, down, back and page switches on steering pad switch assembly not pushed 4 to 6 V
      I18-23 (MSM+) - Body ground L - Body ground Steering pad switch assembly signal Ignition switch ON, enter switch on steering pad switch assembly not pushed 4 to 6 V
      I18-24 (WLVL) - Body ground LG - 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
      I17-1 (B) - Body ground R - Body ground Battery Always 11 to 14 V
      I17-4 (CHG-) - Body ground SB - Body ground Charge warning signal Ignition switch ON, "Check Charging System" not displayed 11 to 14 V
      Ignition switch ON, "Check Charging System" displayed Below 1 V
      I17-5 (HAZ) - Body ground W - Body ground Hazard warning switch signal Ignition switch ON, hazard warning signal switch not pressed 11 to 14 V
      Ignition switch ON, hazard warning signal switch pressed Below 1 V
      I17-7 (LL) - Body ground R - 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
      I17-8 (SW) - Body ground G - Body ground Turn signal switch signal Ignition switch ON, LH and RH turn signal switch off 11 to 14 V
      Ignition switch ON, LH or RH turn signal switch on Below 1 V
      I17-9 (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
      I17-10 (EL) - Body ground L - 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
      I17-11 (LVWG) - Body ground P - Body ground Headlight leveling signal Ignition switch ON, "Check Headlight Leveling System" not displayed 11 to 14 V
      Ignition switch ON, "Check Headlight Leveling System" displayed Below 1 V
      I17-12 (CHK) - Body ground R - 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
      I17-13 (LR) - Body ground G - 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
    2. B000KIBE15

      Waveform 1 (Reference):

      Item Condition
      Tool setting 5 V/DIV., 20 ms./DIV.
      Vehicle condition Ignition switch ON, wheel being rotated

      Tech Tips

      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.

  2. CLOCK ASSEMBLY (except TMMK Made)

    B000JJ0E02

    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
      I59-1 (B) - Body ground LG - Body ground Battery Always 11 to 14 V
      I59-2 (ACC) - Body ground P - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ACC 11 to 14 V
      I59-3 (ILL+) - Body ground V - Body ground Illumination signal Headlight dimmer switch off Below 1 V
      Headlight dimmer switch in tail or head position 11 to 14 V
      I59-7 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω