Toyota Yaris: Lighting System / Terminals Of Ecu

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Vehicle Exterior / Lighting (ext) / Lighting System / Terminals Of Ecu

TERMINALS OF ECU

*1

Power Distribution Box Assembly

*2

Main Body ECU (Multiplex Network Body ECU)

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND POWER DISTRIBUTION BOX ASSEMBLY

(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

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(b) Connect the power distribution box assembly connectors.

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

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

MB-13 (GND1) - Body ground

Ground

Always

Below 1 Ω

MB-14 (GND2) - Body ground

Ground

Always

Below 1 Ω

MB-26 (BECU) - Body ground

Auxiliary battery power supply

Ignition switch off

11 to 14 V

MB-27 (IGR) - Body ground

Ignition power supply

Ignition switch off

Below 1 Ω

Ignition switch ON

11 to 14 V

(d) Install the main body ECU (multiplex network body ECU).

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(e) Connect the power distribution box assembly and main body ECU (multiplex network body ECU) connectors.

(f) 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

H4-26 (HEAD) - Body ground

Light control switch in HEAD position signal input

Light control switch not in HEAD position

11 to 14 V

Light control switch in HEAD position

Below 1 V

4D-10 - Body ground

Headlight assembly LH power supply

Ignition switch off

11 to 14 V

Ignition switch ON

Below 1 V

4D-6 - Body ground

Headlight assembly RH power supply

Ignition switch off

11 to 14 V

Ignition switch ON

Below 1 V

H4-8 (CLTB) - H4-21 (CLTE)

Automatic light control sensor power supply output

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

H4-14 (AHBI) - Body ground

Auto high beam switch signal input

Auto high beam switch on

Below 1 V

Auto high beam switch off

11 to 14 V

H4-20 (CLTS) - Body ground

Automatic light control sensor signal input

Ignition switch ON

Pulse generation

(See waveform 1)

4E-5 - Body ground

Front door courtesy light switch assembly RH input

Front door RH open

4.7 to 5.3 V

Front door RH closed

Below 1 V

(1) Waveform 1

Item

Content

Tester Connection

H4-20 (CLTS) - Body ground

Tool setting

2 V/DIV., 10 ms./DIV.

Condition

Ignition switch ON

HINT:

The communication waveform changes according to the surrounding brightness.

CHECK COMBINATION METER ASSEMBLY

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CHECK STEERING SENSOR

Click here

CHECK FORWARD RECOGNITION CAMERA (w/ Toyota Safety Sense)

Click here

SEMICONDUCTOR POWER INTEGRATION ECU

Click here

    Problem Symptoms Table

    PROBLEM SYMPTOMS TABLE NOTICE: Before replacing the main body ECU (multiplex network body ECU), refer to Registration. Click here When replacing the combination meter assembly, always replace it with a new one...

    Dtc Check / Clear

    DTC CHECK / CLEAR CHECK FOR DTC (MAIN BODY) (a) Check for DTCs. Body Electrical > Main Body > Trouble Codes CHECK FOR DTC (FRONT RECOGNITION CAMERA (FRONT LIGHTING CONTROL)) (a) Check for DTCs...

    Other information:

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Diagnostic Trouble Code Chart


    DIAGNOSTIC TROUBLE CODE CHART SFI System DTC No. Detection Item MIL Note Link P001013 A Camshaft Position Actuator Bank 1 Circuit Open Comes on SAE: P0010 P001100 Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1 Comes on SAE: P0011 P001200 Camshaft Position "A" - Timing Over-Retarded Bank 1 Comes on SAE: P0012 P001313 Camshaft Position "B" - Actuator Bank 1 Circuit Open Comes on SAE: P0013 P001400 Camshaft Position "B" - Timing Over-Advanced or System Performance Bank 1 Comes on SAE: P0014 P001500 Camshaft Position "B" - Timing Over-Retarded Bank 1 Comes on SAE: P0015 P001600 Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor A Comes on SAE: P0016 P001700 Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor B Comes on SAE: P0017 P003012 HO2S Heater Control Bank 1 Sensor 1 Circuit Short to Battery Comes on SAE: P0032 P003013 HO2S Heater Control Bank 1 Sensor 1 Circuit Open Comes on SAE: P0031 P003312 Turbocharger / Supercharger Bypass Valve "A" Control Circuit Short to Battery - SAE: P0035 P003314 Turbocharger / Supercharger Bypass Valve "A" Control Circuit Short to Ground or Open - SAE: P0034 P003612 HO2S Heater Control Circuit Bank 1 Sensor 2 Circuit Short to Battery Comes on SAE: P0038 P003613 A/F (O2) Heater Control Circuit Bank 1 Sensor 2 Circuit Open Comes on SAE: P0037 P006D62 Barometric Pressure - Turbocharger/Supercharger Inlet Pressure Correlation Bank 1 Signal Compare Failure - SAE: P006D P007A11 Charge Air Cooler Temperature Sensor Bank 1 Circuit Short to Ground - SAE: P007C P007A15 Charge Air Cooler Temperature Sensor Bank 1 Circuit Short to Battery or Open - SAE: P007D P008700 Fuel Rail / System Pressure - Too Low Comes on SAE: P0087 P008800 Fuel Rail / System Pressure - Too High Comes on SAE: P0088 P008A00 Low Pressure Fuel System Pressure - Too Low - SAE: P008A P008B00 Low Pressure Fuel System Pressure - Too High - SAE: P008B P00CF62 Barometric Pressure - Turbocharger / Supercharger Boost Sensor "A" Signal Compare Failure Comes on SAE: P00CF P010012 Mass or Volume Air Flow Sensor "A" Circuit Short to Battery Comes on SAE: P0103 P010014 Mass or Volume Air Flow Sensor "A" Circuit Short to Ground or Open Comes on SAE: P0102 P010511 Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Ground Comes on SAE: P0107 P010515 Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Battery or Open Comes on SAE: P0108 P011011 Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Ground Comes on SAE: P0112 P011015 Intake Air Temperature Sensor 1 Bank 1 Circuit Short to Battery or Open Comes on SAE: P0113 P011511 Engine Coolant Temperature Sensor 1 Circuit Short to Ground Comes on SAE: P0117 P011515 Engine Coolant Temperature Sensor 1 Circuit Short to Battery or Open Comes on SAE: P0118 P01152A Engine Coolant Temperature Sensor 1 Signal Stuck in Range Comes on SAE: P0116 P012011 Throttle / Pedal Position Sensor / Switch "A" Circuit Short to Ground Comes on SAE: P0122 P012015 Throttle / Pedal Position Sensor / Switch "A" Circuit Short to Battery or Open Comes on SAE: P0123 P01201C Throttle / Pedal Position Sensor / Switch "A" Circuit Voltage Out of Range Comes on SAE: P0121 P012A11 Turbocharger/Supercharger Inlet Pressure Sensor "A" Circuit Low Circuit Short to Ground - SAE: P012C P012A15 Turbocharger/Supercharger Inlet Pressure Sensor "A" Circuit High Circuit Short to Battery or Open - SAE: P012D P013616 A/F (O2) Sensor Circuit Bank 1 Sensor 2 Circuit Current (Voltage) Below Threshold Comes on SAE: P0136 P017100 System Too Lean Bank 1 Comes on SAE: P0171 P017200 System Too Rich Bank 1 Comes on SAE: P0172 P019011 Fuel Rail Pressure Sensor "A" Circuit Short to Ground Comes on SAE: P0192 P019015 Fuel Rail Pressure Sensor "A" Circuit Short to Battery or Open Comes on SAE: P0193 P019511 Engine Oil Temperature Sensor Circuit Short to Ground - SAE: P0197 P019515 Engine Oil Temperature Sensor Circuit Short to Battery or Open - SAE: P0198 P020113 Cylinder 1 Injector "A" Circuit Open Comes on SAE: P0201 P020213 Cylinder 2 Injector "A" Circuit Open Comes on SAE: P0202 P020313 Cylinder 3 Injector "A" Circuit Open Comes on SAE: P0203 P022011 Throttle/Pedal Position Sensor/Switch "B" Circuit Short to Ground Comes on SAE: P0222 P022015 Throttle/Pedal Position Sensor/Switch "B" Circuit Short to Battery or Open Comes on SAE: P0223 P023400 Turbocharger/Supercharger "A" Overboost Condition - SAE: P0234 P023511 Turbocharger/Supercharger Boost Sensor "A" Circuit Short to Ground Comes on SAE: P0237 P023515 Turbocharger/Supercharger Boost Sensor "A" Circuit Short to Battery or Open Comes on SAE: P0238 P02351C Turbocharger/Supercharger Boost Sensor "A" Circuit Voltage Out of Range - SAE: P0236 P024313 Turbocharger/Supercharger Wastegate Solenoid "A" Circuit Open Does not come on SAE: P0243 P030000 Random/Multiple Cylinder Misfire Detected Comes on/Blinks* *: The MIL flashes when a catalyst-damaging misfire is detected...

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Operation Check


    OPERATION CHECK CHECK WINDOW LOCK FUNCTION HINT: Before performing the window lock switch operation check, make sure that the window lock switch is off (the switch is not pushed in). (a) Turn the window lock switch of the multiplex network master switch assembly on (pushed in) and check that the front passenger window (w/ Rear Power Window) are disabled...

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