Toyota Yaris: Meter / Gauge System / Terminals Of Ecu

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Vehicle Interior / Meter / Gauge / Display / Meter / Gauge System / Terminals Of Ecu

TERMINALS OF ECU

COMBINATION METER ASSEMBLY

(a) Measure the voltage and resistance and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

H6-1 (B) - Body ground

Auxiliary battery

Ignition switch off

11 to 14 V

H6-9 (CANH)

CAN communication line

-

-

H6-10 (MSCL)

Local bus communication line

-

-

H6-11 (TX1-) - Body ground

Outside temperature sensor signal

-

-

H6-13 (FR2) - H6-24 (FE&B)

Fuel level signal

Ignition switch ON, fuel level full → low (fuel level warning light on)

Pulse generation

(See waveform 3)

H6-14 (FV) - Body ground

Fuel sender gauge (Power source)

Ignition switch ON

Pulse generation

(See waveform 1)

H6-15 (MSTI) - Body ground

Steering pad switch signal

Ignition switch ON, up, down, right and left switches on steering pad switch not pushed

4.8 to 5.2 V

H6-16 (TX1+) - Body ground

Outside temperature sensor signal

-

-

H6-19 (EP) - Body ground

Ground

Always

Below 1 Ω

H6-20 (SI) - Body ground

Speed signal for other system (Input)

Ignition switch ON, wheel being rotated

Pulse generation

(See waveform 2)

H6-22 (B) - Body ground

Auxiliary battery

Ignition switch off

11 to 14 V

H6-23 (ES) - Body ground

Ground

Always

Below 1 Ω

H6-24 (FE&B) -Body ground

Fuel sender gauge (Ground)

Always

Below 1 Ω

H6-25 (CANL)

CAN communication line

-

-

H6-27 (MSCH)

Local bus communication line

-

-

H6-31 (FR) - H6-24 (FE&B)

Fuel level signal

Ignition switch ON, fuel level full → low (fuel level warning light on)

Pulse generation

(See waveform 3)

H6-32 (MSM+) - Body ground

Steering pad switch signal

Ignition switch On, OK and back switches on steering pad switch not pushed

4.8 to 5.2 V

H6-36 (+S) - Body ground

Speed signal for other systems (Output)

Ignition switch ON, wheel being rotated

Pulse generation

(See waveform 2)

H6-38 (IG+) - Body ground

Ignition switch signal

Ignition switch off

Below 1 V

Ignition switch ON

10.5 to 16 V

H7-1 (LL) - Body ground

LH turn signal

LH turn indicator light off → blinking

Below 1 V → 11 to 14 V ←→ Below 1 V

H7-2 (LR) - Body ground

RH turn signal

RH turn indicator light off → blinking

Below 1 V → 11 to 14 V ←→ Below 1 V

H7-5 (TRNL) - Body ground

LH turn signal

LH turn indicator light off → blinking

Below 1 V → 11 to 14 V ←→ Below 1 V

H7-6 (TRNR) - Body ground

RH turn signal

RH turn indicator light off → blinking

Below 1 V → 11 to 14 V ←→ Below 1 V

H7-7 (LP) - Body ground

Security indicator signal

Security indicator light off → blinking

Below 2 V → Pulse generation

H7-16 (SW) - Body ground

Brake fluid level signal

Ignition switch ON, brake fluid level not low (brake warning light off) → low (brake warning light on)

11 to 14 V → Below 1 V

H7-17 (HAZ) - Body ground

Hazard warning signal switch signal

Hazard warning signal switch off → on

11 to 14 V → Below 1 V

H7-31 (OILW) - Body ground

Ground

Always

Below 1 Ω

H7-34 (BKL) - Body ground

Driver seat belt warning signal

Ignition switch ON, front passenger seat belt unfastened → fastened

Below 1 V → 11 to 14 V

  • Waveform 1:

    Item

    Condition

    Tester connection

    H6-14 (FV) - Body ground

    Tool setting

    2.5 V/DIV., 20 ms./DIV.

    Condition

    Ignition switch ON

    Specified Condition

    4.5 to 5.5 V

  • Waveform 2:

    Item

    Condition

    Tester connection

    • H6-20 (SI) - Body ground
    • H6-36 (+S) - Body ground

    Tool setting

    5 V/DIV., 20 ms./DIV.

    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.

  • Waveform 3:

    Item

    Condition

    Tester connection

    • H6-31 (FR) - H6-24 (FE&B)
    • H6-13(FR2) - H6-24 (FE&B)

    Tool setting

    2.5 V/DIV., 20 ms./DIV.

    Condition

    Ignition switch ON, fuel level full → low (fuel level warning light on)

    HINT:

    The magnitude of the voltage (A) changes as shown in the following tables.

    • Condition

      Voltage

      H6-31 (FR) - H6-24 (FE&B)

      H6-13(FR2) - H6-24 (FE&B)

      Ignition switch ON, fuel level full

      4.2 to 4.6 V

      3.7 to 4.6 V

      Ignition switch ON, fuel level 1/2

      4.2 to 4.6 V

      0.5 to 0.9 V

      Ignition switch ON, fuel level low (fuel level warning light on)

      0.3 to 2.2 V

      0.5 to 0.9 V

    Problem Symptoms Table

    PROBLEM SYMPTOMS TABLE NOTICE: When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored...

    Dtc Check / Clear

    D..

    Other information:

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    Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Problem Symptoms Table


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    Categories

    Break-In Period

    No special break-in is necessary, but a few precautions in the first 600 miles (1,000 km) may add to the performance, economy, and life of the vehicle.

    Do not race the engine. Do not maintain one constant speed, either slow or fast, for a long period of time. Do not drive constantly at full-throttle or high engine rpm for extended periods of time. Avoid unnecessary hard stops. Avoid full-throttle starts.

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