METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    B004U38E08

    1. Disconnect the combination meter assembly connectors.

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

      Terminal No. Wiring Color Terminal Description Condition Specified Condition
      G34-21 (IG+) - Body ground LA-G - Body ground IG power supply Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      G34-22 (B) - Body ground LA-B - Body ground +B power supply Power switch off 11 to 14 V
      G35-1 (B) - Body ground LA-P - Body ground +B power supply Power switch off 11 to 14 V
      G34-39 (ILL-) - Body ground B - Body ground Illumination signal Light control switch off Below 1 V
      Light control switch in tail or head position 11 to 14 V
      G34-38 (IL2-) - Body ground LA-BE - Body ground Illumination signal Light control switch off Below 1 V
      Light control switch in tail or head position 11 to 14 V
      G34-40 (EP) - Body ground LA - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the combination meter assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G34-14 (RLSB) - Body ground LG - Body ground Rear LH seat belt warning light signal Rear LH seat belt fastened within 30 seconds of opening door with Power switch on (IG) 11 to 14 V
      Rear LH seat belt unfastened within 30 seconds of opening door with Power switch on (IG) Below 1 V
      G34-12 (RRSB) - Body ground SB - Body ground Rear RH seat belt warning light signal Rear RH seat belt fastened within 30 seconds of opening door with Power switch on (IG) 11 to 14 V
      Rear RH seat belt unfastened within 30 seconds of opening door with Power switch on (IG) Below 1 V
      G34-13 (RCSB) - Body ground P - Body ground Rear center seat belt warning light signal Rear center seat belt fastened within 30 seconds of opening door with Power switch on (IG) 11 to 14 V
      Rear center seat belt unfastened within 30 seconds of opening door with Power switch on (IG) Below 1 V
      G35-6 (INT) - Body ground W - Body ground Tire pressure warning light signal Power switch on (IG), tire pressure warning light off Below 1 V
      Power switch on (IG), tire pressure warning light on 11 to 14 V
      G34-20 (SI) - Body ground LG - Body ground Speed signal for other system (Input) Power switch on (IG), wheel being rotated Pulse generation (See waveform 1)
      G34-19 (+S) - Body ground L - Body ground Speed signal for other system (Output) Power switch on (IG), wheel being rotated Pulse generation (See waveform 1)
      G34-34 (FV) - Body ground B - Body ground Fuel sender gauge (Power source) Power switch on (IG) 4.5 to 5.5 V
      G34-37 (FV) - Body ground R - Body ground Fuel sender gauge (Power source) Power switch on (IG) 4.5 to 5.5 V
      G34-33 (FR) - G34-32 (FE) G - R Fuel level signal Power switch on (IG) fuel level full Below 1 V
      Power switch on (IG) fuel level low (fuel level warning light on) 4.5 to 5.5 V
      G34-36 (FR) - G34-35 (FE&B) L - BE Fuel level signal Power switch on (IG) fuel level full Below 1 V
      Power switch on (IG) fuel level low (fuel level warning light on) 4.5 to 5.5 V
      G34-32 (FE) - Body ground R - Body ground Fuel sender gauge (Ground) Always Below 1 Ω
      G34-35 (FE&B) - Body ground BE - Body ground Fuel sender gauge (Ground) Always Below 1 Ω
      G34-16 (WLVL) - Body ground V - 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
      G34-31 (ES) - Body ground LA - Body ground Ground Always Below 1 Ω
      G34-5 (EPB) - Body ground P - Body ground Electric parking brake signal Power switch on (IG), parking brake switch is off 11 to 14 V
      Power switch on (IG), parking brake switch is on Below 1 V
      G34-24 (RLMT) - Body ground L - Body ground Rear LH seat belt warning light output 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
      G34-27 (RCMT) - Body ground LG - Body ground Rear center seat belt warning light output 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
      G34-28 (RRMT) - Body ground W - Body ground Rear RH seat belt warning light output 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
      G34-30 (CANL) W CAN communication line - -
      G34-29 (CANH) Y CAN communication line - -
      G34-7 (TX-) W Local bus communication line - -
      G34-8 (TX+) B Local bus communication line - -
      G34-3 (MSTI) - Body ground B - Body ground Steering pad switch signal Power switch on (IG), up, down, right and left switches on steering pad switch assembly not pushed 4.3 to 5.2 V
      Power switch on (IG), left switch on steering pad switch pushed Below 0.6 V
      Power switch on (IG), up switch on steering pad switch pushed 1.0 to 2.2 V
      Power switch on (IG), down switch on steering pad switch pushed 2.3 to 3.4 V
      Power switch on (IG), right switch on steering pad switch pushed 3.4 to 4.5 V
      G34-2 (MSM+) - Body ground LG - Body ground Steering pad switch signal Power switch on (IG), enter, trip and back switches on steering pad switch not pushed 4.3 to 5.2 V
      Power switch on (IG), enter switch on steering pad switch pushed Below 0.6 V
      Power switch on (IG), trip switch on steering pad switch pushed 1.0 to 2.2 V
      Power switch on (IG), back switch on steering pad switch pushed 2.3 to 3.4 V
      G34-23 (IND) - Body ground SB - 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
      G34-25 (TR) - Body ground Y - 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
      G34-26 (SW3) - Body ground W - Body ground Ground for trip switch Always Below 1 Ω
      G34-4 (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
      G34-11 (LST1) - Body ground GR - 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
      G34-9 (S) - Body ground BE - Body ground Oil pressure signal Engine started 11 to 14 V
      Engine not started Below 1 V
      G34-10 (PIND) - Body ground L - Body ground Pad wear indicator light signal Power switch on (IG), pad wear indicator light off Below 1 V
      Power switch on (IG), pad wear indicator light on 11 to 14 V
      G34-15 (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
      G35-2 (HZSW) - Body ground P - Body ground Hazard warning signal switch signal (Output) Hazard warning signal switch off 11 to 14 V
      Hazard warning signal switch on Below 1 V
      G35-12 (HAZM) - Body ground B - Body ground Hazard warning signal switch signal (Output) Power Switch on (IG), hazard warning signal switch not pressed Below 1 V
      Power Switch on (IG), hazard warning signal switch pressed 11 to 14 V ←→ Below 1 V
      G35-5 (TRNR) - Body ground LA-SB - 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
      G35-11 (TRNL) - Body ground LA-Y - 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
      G35-7 (LR) - Body ground LA-Y - Body ground Front/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
      G35-13 (LL) - Body ground LA-SB - Body ground Front/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

      • *1: w/ Washer Level Warning

      • *2: for Radio and Display Receiver Type

      If the result is not as specified, the combination meter assembly may be malfunctioning.


      1. B004WK3E08
        *a 5 V/DIV.
        *b 20 ms./DIV.

        Waveform 1 (Reference):

        Item Condition
        Tool setting 5 V/DIV., 20 ms./DIV.
        Vehicle condition Power switch on (IG) 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. B004RQWE05
        *a 5 V/DIV.
        *b 20 ms./DIV.

        Waveform 2:

        Item Condition
        Tester Range 5 V/DIV., 20 ms./DIV.
        Condition "Please Wait Now Opening" displayed on multi-information display
      3. B004S01E05
        *a 5 V/DIV.
        *b 20 ms./DIV.

        Waveform 3:

        Item Condition
        Tester Range 5 V/DIV., 20 ms./DIV.
        Condition "Close Fuel Lid" displayed on multi-information display
      4. B004W62E01
        *a 5 V/DIV.
        *b 20 ms./DIV.

        Waveform 4:

        Item Condition
        Tester Range 5 V/DIV., 20 ms./DIV.
        Condition "Refuel Ready" displayed on multi-information display