Toyota Yaris: 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.
Click here
(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).
Click here
(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
Click here
CHECK STEERING SENSOR
Click here
CHECK FORWARD RECOGNITION CAMERA (w/ Toyota Safety Sense)
Click here
SEMICONDUCTOR POWER INTEGRATION ECU
Click here
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 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:
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...
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...
Categories
The front and side supplemental restraint systems (SRS) include different
types of air bags. Please verify the different types of air bags
which are equipped on your vehicle by locating the “SRS AIRBAG”
location indicators. These indicators are visible in the area where the
air bags are installed.
The air bags are installed in the following locations:
The steering wheel hub (driver air bag)
The front passenger dashboard (front passenger air bag)
The outboard sides of the front seatbacks (side air bags)
The front and rear window pillars, and the roof edge along both
sides (curtain air bags)
read more