LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2018 >> RX 450h Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System (Diagnostics - Introduction) (5 Of 5) >> Meter / Gauge System >> Terminals Of Ecu [08/2016 - 03/2018] >> Terminals Of Ecu [08/2016 - 03/2018]

Terminals Of Ecu [08/2016 - 03/2018]

  1. COMBINATION METER ASSEMBLY 
    GTY619204Courtesy 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
      J10-2 (MSM+) - Body ground Y - Body ground Steering pad switch assembly signal Power switch on (IG), enter, back and top switches on steering pad switch assembly not pushed 4.3 to 6 V
      Power switch on (IG), enter switch on steering pad switch assembly pushed Below 0.6 V
      Power switch on (IG), back switch on steering pad switch assembly pushed 2.3 to 3.2 V
      Power switch on (IG), top switch on steering pad switch assembly pushed 1 to 2 V
      J10-3 (MSTI) - Body ground LG - Body ground Steering pad switch assembly signal Power switch on (IG), up, down, right and left switches on steering pad switch assembly not pushed 4.3 to 6 V
      Power switch on (IG), up switch on steering pad switch assembly pushed 1 to 2 V
      Power switch on (IG), down switch on steering pad switch assembly pushed 2.3 to 3.2 V
      Power switch on (IG), right switch on steering pad switch assembly pushed 3.4 to 4.1 V
      Power switch on (IG), left switch on steering pad switch assembly pushed Below 0.6 V
      J10-4 (ODO) - Body ground W - Body ground ODO/TRIP switch signal Power switch on (IG), ODO/TRIP switch not pushed 4 to 6 V
      Power switch on (IG), ODO/TRIP switch pushed Below 1 V
      J10-5 (EPB) - Body ground R - Body ground Electric parking brake signal 20 seconds after power switch turned off 9 to 14 V
      J10-9 (S) - Body ground V - Body ground Oil pressure signal Engine started 11 to 14 V
      Engine not started Below 1 V
      J10-12 (RRSB) - Body ground* W - Body ground Rear seat belt indicator light RH signal Power switch on (IG), rear seat belt warning light RH off 11 to 14 V
      Power switch on (IG), rear seat belt warning light RH on Below 1 V
      J10-13 (RCSB) - Body ground* B - Body ground Rear seat belt indicator light center signal Power switch on (IG), rear seat belt warning light center off 11 to 14 V
      Power switch on (IG), rear seat belt warning light center on Below 1 V
      J10-14 (RLSB) - Body ground* R - Body ground Rear seat belt indicator light LH signal Power switch on (IG), rear seat belt warning light LH off 11 to 14 V
      Power switch on (IG), rear seat belt warning light LH on Below 1 V
      J10-15 (OILW) - Body ground SB - Body ground Engine oil level signal Power switch on (IG), engine oil level not low 11 to 14 V
      Power switch on (IG), engine oil level low Below 1 V
      J10-16 (WLVL) - Body ground L - Body ground Washer fluid level signal Power switch on (IG), washer fluid level not low 11 to 14 V
      Power switch on (IG), washer fluid level low Below 1 V
      J10-18 (FV) - Body ground R - Body ground Fuel sender gauge (Power source) Power switch on (IG) Pulse generation (See waveform 6)
      J10-19 (+S) - Body ground V - Body ground Speed signal for other system (Output) Power switch on (IG), wheel being rotated Pulse generation (See waveform 1)
      J10-20 (SI) - Body ground P - Body ground Speed signal for other system (Input) Power switch on (IG), wheel being rotated Pulse generation (See waveform 1)
      J10-21 (IG+) - Body ground GR - Body ground Power switch signal Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      J10-22 (B) - Body ground G - Body ground Auxiliary battery Power switch off 11 to 14 V
      J10-23 (IND) - Body ground L - Body ground Vehicle proximity notification system warning signal Power switch on (IG), "Proximity Notification System Malfunction Visit Your Dealer" displayed on multi-information display Below 1.5 V
      Power switch on (IG), "Proximity Notification System Malfunction Visit Your Dealer" not displayed on multi-information display 11 to 14 V
      J10-25 (TR) - Body ground BE - Body ground Light control rheostat switch signal Power switch on (IG), up switch and down switch of trip switch not pushed 4 to 6 V
      Power switch on (IG), up switch or down switch of trip switch pushed Below 1 V
      J10-26 (SW3) - Body ground V - Body ground Ground for trip switch Always Below 1 Ω
      J10-27 (FR) - J10-28 (FE) P - G Fuel level signal Power switch on (IG), fuel level full → low (fuel level warning light on) Pulse generation (See waveform 5)
      J10-29 (CANH) - Body ground GR - Body ground CAN communication line - -
      J10-30 (CANL) - Body ground W - Body ground CAN communication line - -
      J10-31 (ES) - Body ground W-B - Body ground Ground Always Below 1 Ω
      J10-34 (LST1) - Body ground R - Body ground Fuel lid operation signal "Please Wait Now Opening" displayed on multi-information display Pulse generation (See waveform 2)
      "Close Fuel Lid" displayed on multi-information display Pulse generation (See waveform 3)
      "Refuel Ready" displayed on multi-information display Pulse generation (See waveform 4)
      Power switch on (IG), "OFF" displayed on multi-information display 11 to 14 V
      J10-35 (RLMT) - Body ground* Y - Body ground Rear seat belt buckle switch LH signal Power switch on (IG), rear seat belt LH unfastened Below 1 V
      Power switch on (IG), rear seat belt LH fastened 11 to 14 V
      J10-36 (RCMT) - Body ground* W - Body ground Rear seat belt buckle switch center signal Power switch on (IG), rear seat belt center unfastened Below 1 V
      Power switch on (IG), rear seat belt center fastened 11 to 14 V
      J10-37 (RRMT) - Body ground* B - Body ground Rear seat belt buckle switch RH signal Power switch on (IG), rear seat belt RH unfastened Below 1 V
      Power switch on (IG), rear seat belt RH fastened 11 to 14 V
      J10-38 (IL2-) - Body ground G - Body ground Illumination signal Headlight dimmer switch off Below 1 V
      Headlight dimmer switch in tail or head position Pulse generation
      J10-39 (ILL-) - Body ground L - Body ground Illumination signal Headlight dimmer switch off Below 1 V
      Headlight dimmer switch in tail or head position Pulse generation
      J10-40 (EP) - Body ground W-B - Body ground Ground Always Below 1 Ω
      J11-1 (B) - Body ground Y - Body ground Auxiliary battery Power switch off 11 to 14 V
      J11-2 (HZSW) - Body ground GR - Body ground Hazard warning signal switch signal (Input) Power switch on (IG), hazard warning signal switch not pressed 11 to 14 V
      Power switch on (IG), hazard warning signal switch pressed Below 1 V
      J11-3 (ER) - Body ground SB - Body ground RH turn signal switch signal Power switch on (IG), RH turn signal switch off 11 to 14 V
      Power switch on (IG), RH turn signal switch on Below 1 V
      J11-4 (EL) - Body ground BE - Body ground LH turn signal switch signal Power switch on (IG), LH turn signal switch off 11 to 14 V
      Power switch on (IG), LH turn signal switch on Below 1 V
      J11-5 (TRNR) - Body ground V - Body ground Rear turn signal light LH signal Power switch on (IG), LH turn indicator light off Below 1 V
      Power switch on (IG), LH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      J11-6 (INT) - Body ground L - Body ground Tire pressure warning ECU and receiver signal Power switch on (IG) 8 to 15 V
      Power switch on (IG), steering pad switch assembly operated, "TPMS" selected on the multi-information display and "ENTER" switch (steering pad switch assembly) pressed and held Below 1.5 V
      J11-7 (LR) - Body ground W - Body ground Front and side turn signal light RH signal Power switch on (IG), RH turn indicator light off Below 1 V
      Power switch on (IG), RH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      J11-8 (SW) - Body ground B - Body ground Turn signal switch signal Power switch on (IG), LH and RH turn signal switch off 11 to 14 V
      Power switch on (IG), LH or RH turn signal switch on Below 1 V
      J11-9 (TX-) - Body ground W - Body ground Local bus communication line - -
      J11-10 (TX+) - Body ground LG - Body ground Local bus communication line - -
      J11-11 (TRNL) - Body ground G - Body ground Rear turn signal light RH signal Power switch on (IG), RH turn indicator light off Below 1 V
      Power switch on (IG), RH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      J11-12 (HAZM) - Body ground P - Body ground Hazard warning signal switch signal (Output) Power switch on (IG), hazard warning signal switch not pressed 11 to 14 V
      Power switch on (IG), hazard warning signal switch pressed Below 1 V
      J11-13 (LL) - Body ground R - Body ground Front and side turn signal light LH signal Power switch on (IG), LH turn indicator light off Below 1 V
      Power switch on (IG), LH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      J127-1 (GVIF) - Body ground B - Body ground Video signal (Digital) - -
      1. *: w/ Rear Seat Belt Warning
      1. Waveform 1 (Reference):
        Fig 1: Waveform 1
        GTY436923Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Condition
        Tool setting 5 V/DIV., 20 ms./DIV.
        Vehicle condition Power switch on (IG), 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.

      2. Waveform 2:
        Item Condition
        Tester Range 5 V/DIV., 20 ms./DIV.
        Condition "Please Wait Now Opening" displayed on multi-information display
        Fig 2: Waveform 2
        GTY552000Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Waveform 3:
        Item Condition
        Tester Range 5 V/DIV., 20 ms./DIV.
        Condition "Close Fuel Lid" displayed on multi-information display
        Fig 3: Waveform 3
        GTY558736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Waveform 4:
        Item Condition
        Tester Range 5 V/DIV., 20 ms./DIV.
        Condition "Refuel Ready" displayed on multi-information display
        Fig 4: Waveform 4
        GTY561477Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Waveform 5:
        Fig 5: Waveform 5
        GTY808354Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Condition
        Tool setting 2.5 V/DIV., 20 ms./DIV.
        Vehicle condition Power switch on (IG), fuel level full → low

        HINT: 

        • (A) will depending on the fuel level
        • Fuel level full → low (4.1 to 4.4 V → 0.3 to 1.1 V)
        6. Fig 6: Waveform 6
        GTY801514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      6. Waveform 6:
        Item Condition
        Tool setting 2.5 V/DIV., 20 ms./DIV.
        Condition Power switch on (IG)
        Specified Condition 4.5 to 5.5 V
scientia non olet · About LEMON Manuals