METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A0137RBE02
    A0137SRE03
    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    +B (3G-4) - Body ground GR - Body ground Battery Always 10 to 14 V
    SIGNAL EARTH (C1-17) - Body ground SB - Body ground Ground Always 0 V
    F EARTH (C1-16) - Body ground O - Body ground Ground Always 0 V
    S1 (C1-22) - Body ground W - Body ground Vehicle speed signal (Input) Ignition switch ON and wheel turning slowly

    Pulse generation

    (See waveform 1)
    F SENDER (C1-14) - Body ground W - Body ground Fuel level signal Ignition switch ON, fuel level FULL → EMPTY 410 Ω
    WATER TEMP (A22-7) - Body ground W - Body ground High engine coolant temperature Ignition switch ON, engine coolant temperature 117°C (243°F) or more 0 V
    FASTEN BELT (C1-21) - Body ground Y - Body ground Seat belt condition signal (Driver side) FASTEN BELT indicator light ON 0 V
    FASTEN BELT (C1-21) - Body ground Y - Body ground Seat belt condition signal (Driver side) FASTEN BELT indicator light OFF 10 to 14 V
    DOOR (C1-20) - Body ground LG - Body ground Driver side door condition signal Driver side door open 0 V
    DOOR (C1-20) - Body ground LG - Body ground Driver side door condition signal Driver side door closed 10 to 14 V
    CHG- (C1-24) - Body ground V - Body ground Charge signal Idling 10 to 14 V
    CHG- (C1-24) - Body ground V - Body ground Charge signal Ignition switch OFF 0 V
    MIL (A22-14) - Body ground

    O*3 - Body ground

    BR*4 - Body ground

    		 MIL signal MIL ON 0 V
    MIL (A22-14) - Body ground

    O*3 - Body ground

    BR*4 - Body ground

    		 MIL signal MIL OFF 10 to 14 V
    IGN (3H-9) - Body ground Y - Body ground Ignition switch signal Ignition switch OFF 0 V
    IGN (3H-9) - Body ground Y - Body ground Ignition switch signal Ignition switch OFF 45 kΩ
    IGN (3H-9) - Body ground Y - Body ground Ignition switch signal Ignition switch ON 10 to 14 V
    OIL PRESSURE (A22-8) - Body ground O - Body ground Oil pressure signal Oil pressure warning light ON 0 V
    OIL PRESSURE (A22-8) - Body ground O - Body ground Oil pressure signal Oil pressure warning light OFF 10 to 14 V
    FLASH LR (3L-9) - Body ground Y - Body ground Ground Always 0 V
    FLASH LR (3L-8) - Body ground W - Body ground
    FLASH LR (3D-10) - Body ground BR - Body ground
    FLASH LL (3L-11) - Body ground V - Body ground Ground Always 0 V
    FLASH LL (3L-10) - Body ground O - Body ground
    FLASH LL (3D-2) - Body ground O - Body ground
    AIR BAG (C1-19) - Body ground GR - Body ground Air bag signal AIR BAG warning light ON Pulse generation
    AIR BAG (C1-19) - Body ground GR - Body ground Air bag signal AIR BAG warning light OFF Pulse generation

    ILL+ (3D-4) - Body ground

    ILL+ (3N-5) - Body ground

    SB - Body ground

    G - Body ground

    		 Illumination signal Taillight OFF 0 V

    ILL+ (3D-4) - Body ground

    ILL+ (3N-5) - Body ground

    SB - Body ground

    G - Body ground

    		 Illumination signal Taillight ON 10 to 14 V
    BRAKE LEVEL (A22-13) - Body ground LG - Body ground BRAKE signal BRAKE warning light ON 0 V
    BRAKE LEVEL (A22-13) - Body ground LG - Body ground BRAKE signal BRAKE warning light OFF 10 to 14 V
    HI BEAM+ (3G-9) - Body ground *1 G - Body ground *1 Hi-Beam signal Hi-Beam OFF 0 V
    +B (3G-4) - Body ground *2 GR - Body ground*2 Hi-Beam signal Always 10 to 14 V
    HI BEAM+ (3G-9) - Body ground *1 G - Body ground *1 Hi-Beam signal Hi-Beam ON 10 to 14 V
    +B (3G-4) - Body ground *2 GR - Body ground*2 Hi-Beam signal Always 10 to 14 V
    HI BEAM- (3K-1) - Body ground *1 W-B - Body ground *1 Hi-Beam signal Always 0 V
    HI BEAM- (3C-5) - Body ground *2 P - Body ground*2 Hi-Beam signal Hi-Beam OFF 0 V
    HI BEAM- (3G-9) - Body ground *2 G - Body ground*2
    HI BEAM- (3G-10) - Body ground *2 P - Body ground*2
    HI BEAM- (3C-5) - Body ground *2 P - Body ground*2 Hi-Beam signal Hi-Beam ON 10 to 14 V
    HI BEAM- (3G-9) - Body ground *2 G - Body ground*2
    HI BEAM- (3G-10) - Body ground *2 P - Body ground*2
    LO BEAM+ (3L-5) - Body ground *1 GR - Body ground *1 Lo-Beam signal Lo-Beam OFF 0 V
    +B (3G-4) - Body ground *2 GR - Body ground*2 Lo-Beam signal Always 10 to 14 V
    LO BEAM+ (3L-5) - Body ground *1 GR - Body ground *1 Lo-Beam signal Lo-Beam ON 10 to 14 V
    +B (3G-4) - Body ground *2 GR - Body ground*2 Lo-Beam signal Always 10 to 14 V
    LO BEAM- (3K-1) - Body ground *1 W-B - Body ground *1 Lo-Beam signal Always 0 V
    LO BEAM- (3C-11) - Body ground *2 L - Body ground*2 Lo-Beam signal Lo-Beam OFF 0 V
    LO BEAM- (3L-5) - Body ground *2 GR - Body ground*2
    LO BEAM- (3L-6) - Body ground *2 LG - Body ground*2
    LO BEAM- (3C-11) - Body ground *2 L - Body ground*2 Lo-Beam signal Lo-Beam ON 10 to 14 V
    LO BEAM- (3L-5) - Body ground *2 GR - Body ground*2
    LO BEAM- (3L-6) - Body ground *2 LG - Body ground*2
    RR FOG SW (3C-10) - Body ground R - Body ground Rear fog signal Rear fog ON 10 to 14 V
    RR FOG SW (3D-15) - Body ground LG - Body ground
    RR FOG SW (3C-10) - Body ground R - Body ground Rear fog signal Rear fog OFF 0 V
    RR FOG SW (3D-15) - Body ground LG - Body ground
    FLASH HAZ(3G-2) - Body ground Y - Body ground Power source for flasher relay Always 10 to 14 V
    POWER EARTH (3K-1) - Body ground W-B - Body ground Ground Always 0 V
    FLASH ER (3C-9) - Body ground Y - Body ground Turn signal RH Turn signal RH ON 0 V
    FLASH ER (3C-9) - Body ground Y - Body ground Turn signal RH Turn signal RH OFF 10 to 14 V
    FLASH EL (3C-4) - Body ground B - Body ground Turn signal LH Turn signal LH ON 0 V
    FLASH EL (3C-4) - Body ground B - Body ground Turn signal LH Turn signal LH OFF 10 to 14 V
    HAZ SW (C1-13) - Body ground Y - Body ground Hazard signal Hazard ON 0 V
    HAZ SW (C1-13) - Body ground Y - Body ground Hazard signal Hazard OFF 10 to 14 V
    ABS (A22-16) - Body ground P - Body ground ABS signal ABS warning light OFF 0 V
    ABS (A22-16) - Body ground P - Body ground ABS signal ABS warning light ON 10 to 14 V
    TRC (A22-10) - Body ground G - Body ground TRC signal Slip indicator light OFF 10 to 14 V
    TRC (A22-10) - Body ground G - Body ground TRC signal Slip indicator light ON 0 V
    VSW (A22-11) - Body ground L - Body ground VSC signal VSC warning light OFF 10 to 14 V
    VSW (A22-11) - Body ground L - Body ground VSC signal VSC warning light ON 0 V
    EBD (A22-15) - Body ground W - Body ground EBD signal BRAKE warning light OFF 0 V
    EBD (A22-15) - Body ground W - Body ground EBD signal BRAKE warning light ON 10 to 14 V
    EPS (C1-23) - Body ground G - Body ground EPS signal EPS warning light OFF 0 V
    EPS (C1-23) - Body ground G - Body ground EPS signal EPS warning light ON 10 to 14 V
    TX+ (A22-5) - Body ground Y - Body ground Multi-mode manual transmission position signal Multi-mode manual transmission position indicator ON Pulse generation
    TX+ (A22-5) - Body ground Y - Body ground Multi-mode manual transmission position signal Multi-mode manual transmission position indicator OFF 0 V
    BRQ (A22-4) - Body ground R - Body ground Multi-mode manual transmission signal Multi-mode manual transmission warning light ON 4.5 to 5.5 V
    BRQ (A22-4) - Body ground R - Body ground Multi-mode manual transmission signal Multi-mode manual transmission warning light OFF 0 V
    FUEL FILTER (A22-12) - Body ground G - Body ground Fuel filter warning switch signal Fuel filter warning light ON 0 V
    FUEL FILTER (A22-12) - Body ground G - Body ground Fuel filter warning switch signal Fuel filter warning light OFF 10 to 14 V
    GLOW (A22-9) - Body ground L - Body ground Glow plug signal Glow plug ON 0 V
    GLOW (A22-9) - Body ground L - Body ground Glow plug signal Glow plug OFF 10 to 14 V

    *1: w/ daytime running light

    *2: w/o daytime running light

    *3: w/o VSC

    *4: w/ VSC

  2. Waveform 1

    A01379YE03
    Item Contents
    Tool setting 5V/DIV, 20 ms/DIV
    Vehicle condition Driving at approximately 20 km/h (12 mph)

    Tech Tips

    As the vehicle speed increases, the cycle of the signal waveform narrows.

  3. COMBINATION METER INNER CIRCUIT

    A0137V6E02
    A0138NNE02
    A0138MXE01
    A0138MAE02
    Connectors:
    Terminal No. Wire Harness Side
    A22 4 Multi-mode Manual Transmission Control ECU *3
    5 Multi-mode Manual Transmission Control ECU *3
    7 ECM
    8 Oil Pressure Switch
    9 ECM *4
    10 Skid Control ECU *5
    11 Skid Control ECU *5
    12 Fuel Filter Warning Switch *4
    13 Brake Fluid Level Warning Switch
    14 ECM
    15 Skid Control ECU
    16 Skid Control ECU
    C1 13 Hazard Light Switch
    14 Fuel Sender Gauge
    16 Fuel Sender Gauge
    17 Ground
    19 Airbag Sensor Assembly Center
    20 Door Courtesy Light Switch
    21 Front Seat Belt Inner Belt
    22 Skid Control ECU
    23 Power Steering ECU
    24 Generator (Alternator)
    3C 4 Combination Switch
    5 Combination Switch *2
    6 Combination Switch *2
    9 Combination Switch
    10 Combination Switch
    11 Combination Switch *2
    3D 2 Rear Combination Light (LH)
    4 TAIL Relay *1
    10 Rear Combination Light (RH)
    15 Rear Combination Light (RH LH)
    3G 2 Battery
    4 Battery
    9 Headlight (HI LH)
    10 Headlight (HI RH) *2
    3H 9 Ignition Switch
    3K 1 Ground
    3L 5 Headlight (LO LH)
    6 Headlight (LO RH) *2
    8 Turn Signal Light (Front Side RH)
    9 Turn Signal Light (Front RH)
    10 Turn Signal Light (Front Side LH)
    11 Turn Signal Light (Front LH)

    *1: w/ daytime running light

    *2: w/o daytime running light

    *3: Multi-mode manual transmission

    *4: Diesel engine

    *5: w/ VSC

  4. TACHOMETER

    A0138XTE03
    Standard:
    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    B (C2-5) - Body ground L - Body ground Battery Always 10 to 14 V
    IG+ (C2-1) - Body ground R - Body ground Battery Ignition switch ON 10 to 14 V
    IG+ (C2-1) - Body ground R - Body ground Battery Ignition switch OFF 0 V
    S (C2-2) - Body ground B - Body ground Tacho signal (Input) Idling Pulse generation (See waveform 1)
    E (C2-4) - Body ground BR - Body ground Ground Always Below 1 Ω
    ILL+ (C2-6) - Body ground G - Body ground Illumination signal Taillight OFF Below 1 Ω
    ILL+ (C2-6) - Body ground G - Body ground Illumination signal Taillight ON 10 to 14 V

  5. Waveform 1

    A013837E02
    Item Contents
    Tool setting 5V/DIV, 10 ms/DIV
    Vehicle condition Engine idling speed