Toyota Yaris: Sfi System / Random/Multiple Cylinder Misfire Detected (P030000,P030027,P030085-P030300)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Random/Multiple Cylinder Misfire Detected (P030000,P030027,P030085-P030300)

DESCRIPTION

When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. Extremely high hydrocarbon concentration levels can cause an increase in exhaust emission levels. Extremely high concentrations of hydrocarbons can also cause increases in the three-way catalytic converter temperature, which may cause damage to the three-way catalytic converter. To prevent this increase in emissions and to limit the possibility of thermal damage, the ECM monitors the misfire count. When the temperature of the three-way catalytic converter reaches the point of thermal degradation, the ECM blinks the MIL. To monitor misfires, the ECM uses both the camshaft position sensor and the crankshaft position sensor. The camshaft position sensor is used to identify any misfiring cylinders and the crankshaft position sensor is used to measure variations in the crankshaft rotation speed. Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. If the misfire count exceeds the threshold levels, and could cause emission control system performance deterioration, the ECM illuminates the MIL and stores a DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

P030000

Random/Multiple Cylinder Misfire Detected

Simultaneous misfiring of several cylinders occurs and one of the following conditions is met (2 trip detection logic):

  • A misfire occurs that may damage the three-way catalytic converter (MIL blinks immediately when detected).
  • An emission deterioration misfire occurs (MIL illuminates).
  • Open or short in engine wire harness
  • Connector connection
  • Vacuum hose connections
  • Ignition system
  • Port fuel injector assembly
  • Direct fuel injector assembly
  • Fuel pressure
  • Mass air flow meter sub-assembly
  • Engine coolant temperature sensor
  • Compression pressure
  • Valve timing
  • PCV valve and hose
  • PCV hose connections
  • Intake system
  • ECM

Comes on/Blinks*

*: The MIL flashes when a catalyst-damaging misfire is detected.

SAE: P0300

P030027

Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change Above Threshold

An emission deterioration misfire occurs (2 trip detection logic).

  • Open or short in engine wire harness
  • Connector connection
  • Vacuum hose connections
  • Ignition system
  • Port fuel injector assembly
  • Direct fuel injector assembly
  • Fuel pressure
  • Mass air flow meter sub-assembly
  • Engine coolant temperature sensor
  • Compression pressure
  • Valve timing
  • PCV valve and hose
  • PCV hose connections
  • Intake system
  • ECM

Comes on

SAE: -

P030085

Random / Multiple Cylinder Misfire Detected (Over Temperature) Signal Above Allowable Range

A misfire occurs that may damage the three-way catalytic converter (2 trip detection logic).

  • Open or short in engine wire harness
  • Connector connection
  • Vacuum hose connections
  • Ignition system
  • Port fuel injector assembly
  • Direct fuel injector assembly
  • Fuel pressure
  • Mass air flow meter sub-assembly
  • Engine coolant temperature sensor
  • Compression pressure
  • Valve timing
  • PCV valve and hose
  • PCV hose connections
  • Intake system
  • ECM

Comes on/Blinks*

*: The MIL flashes when a catalyst-damaging misfire is detected.

SAE: -

P030100

Cylinder 1 Misfire Detected

Misfiring of a specific cylinder occurs and one of the following conditions is met (2 trip detection logic):

  • A misfire occurs that may damage the three-way catalytic converter (MIL blinks immediately when detected).
  • An emission deterioration misfire occurs (MIL illuminates).
  • Open or short in engine wire harness
  • Connector connection
  • Vacuum hose connections
  • Ignition system
  • Port fuel injector assembly
  • Direct fuel injector assembly
  • Fuel pressure
  • Mass air flow meter sub-assembly
  • Engine coolant temperature sensor
  • Compression pressure
  • Valve timing
  • PCV valve and hose
  • PCV hose connections
  • Intake system
  • ECM

Comes on/Blinks*

*: The MIL flashes when a catalyst-damaging misfire is detected.

SAE: P0301

P030200

Cylinder 2 Misfire Detected

Misfiring of a specific cylinder occurs and one of the following conditions is met (2 trip detection logic):

  • A misfire occurs that may damage the three-way catalytic converter (MIL blinks immediately when detected).
  • An emission deterioration misfire occurs (MIL illuminates).
  • Open or short in engine wire harness
  • Connector connection
  • Vacuum hose connections
  • Ignition system
  • Port fuel injector assembly
  • Direct fuel injector assembly
  • Fuel pressure
  • Mass air flow meter sub-assembly
  • Engine coolant temperature sensor
  • Compression pressure
  • Valve timing
  • PCV valve and hose
  • PCV hose connections
  • Intake system
  • ECM

Comes on/Blinks*

*: The MIL flashes when a catalyst-damaging misfire is detected.

SAE: P0302

P030300

Cylinder 3 Misfire Detected

Misfiring of a specific cylinder occurs and one of the following conditions is met (2 trip detection logic):

  • A misfire occurs that may damage the three-way catalytic converter (MIL blinks immediately when detected).
  • An emission deterioration misfire occurs (MIL illuminates).
  • Open or short in engine wire harness
  • Connector connection
  • Vacuum hose connections
  • Ignition system
  • Port fuel injector assembly
  • Direct fuel injector assembly
  • Fuel pressure
  • Mass air flow meter sub-assembly
  • Engine coolant temperature sensor
  • Compression pressure
  • Valve timing
  • PCV valve and hose
  • PCV hose connections
  • Intake system
  • ECM

Comes on/Blinks*

*: The MIL flashes when a catalyst-damaging misfire is detected.

SAE: P0303

When DTCs for misfiring cylinders are randomly stored, but DTC P030000 is not stored, it indicates that misfires have been detected in different cylinders at different times. DTC P030000 is only stored when several misfiring cylinders are detected at the same time.

MONITOR DESCRIPTION

The ECM illuminates the MIL and stores a DTC when the following condition, which could cause emission deterioration, is detected (2 trip detection logic).

  • An excessive number of misfires (approximately 10 to 70 misfires per 1000 crankshaft revolutions) occurs a total of 4 times.

The ECM flashes the MIL (immediate detection logic) and stores a DTC (2 trip detection logic) when the following condition, which could cause damage to the three-way catalytic converter, is detected.

  • At a normal engine speed, a sufficient amount of misfires to damage the catalyst occurring within 200 crankshaft revolutions is detected 3 times.

MONITOR STRATEGY

Required Sensors/Components (Main)

Crankshaft position sensor

Camshaft position sensor

Required Sensors/Components (Related)

Engine coolant temperature

Intake air temperature sensor (mass air flow meter sub-assembly)

Mass air flow meter sub-assembly

Frequency of Operation

Continuous

TYPICAL ENABLING CONDITIONS

Misfire

Either of the following conditions is met

(a) or (b)

(a) Engine coolant temperature at engine start

Higher than -10°C (14°F)

(b) Engine coolant temperature

Higher than 20°C (68°F)

Monitor Period of Emission-related Misfire

Duration

Crankshaft 1000 revolutions x 4

Monitor Period of Catalyst-damaging Misfire (MIL Blinks)

Duration

Crankshaft 200 revolutions x 3

CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the GTS on.
  4. Record the DTC(s) and Freeze Frame Data.
  5. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  6. Using the GTS, switch the ECM from normal mode to check mode.

    Click here

  7. Start the engine.
  8. Read the misfire counts of each cylinder, Misfire Count Cylinder #1 to Misfire Count Cylinder #3, with the engine idling. If any misfire count is displayed, skip the following confirmation driving pattern.
  9. Drive the vehicle so that the vehicle conditions displayed in Misfire RPM and Misfire Load of the Data List are the same as the Freeze Frame Data. Perform this step several times.

    HINT:

    In order to store misfire DTCs, it is necessary to operate the vehicle for the period of time shown in the table below, confirm the Misfire RPM and Misfire Load in the Data List.

    Engine speed

    Duration

    Idling

    4.5 minutes or more

    2000

    2.5 minutes or more

    3000

    1.5 minutes or more

  10. Check whether misfires have occurred by checking DTCs and Freeze Frame Data.

    HINT:

    Do not turn the ignition switch off until the output DTC(s) and Freeze Frame Data have been recorded. When the ECM returns to normal mode (default), the stored DTC(s), Freeze Frame Data and other data are cleared.

  11. Record the DTC(s), Freeze Frame Data and misfire counts.
  12. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  13. Turn the ignition switch off and wait for at least 30 seconds.

WIRING DIAGRAM

Refer to DTC P010012 for the mass air flow meter sub-assembly circuit.

Click here

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

  • Check the "Fuel Cut Elapsed Time" in the Data List or the Freeze Frame Data.

    If the elapsed time is over 0 seconds, then the engine speed is high (engine speed at which fuel cut occurs + 500 rpm).

    When this has happened, there is the possibility that the No. 1 valve rocker arm sub-assembly will become loose and a fire could start, so check that the No. 1 valve rocker arm sub-assembly is properly attached.

  • By clearing the DTCs, "Fuel Cut Elapsed Time" will be cleared.
  • In the past, when the primary ignition system (the igniter drive circuit in the ECM, the primary circuit in the ignition coil assembly, the related wire harness, or the connector) was out of order, diagnostic codes from P035113 to P035613 were output. However, these codes are not output in this vehicle.

    When a failure in the primary ignition system is suspected, refer to "Catalyst OT Misfire Fuel Cut History", "Catalyst OT Misfire Fuel Cut Cylinder #1 to #3", and "Misfire Count Cylinder #1 to #3" in the Freeze Frame Data, the pending Freeze Frame Data, and the Data List, and confirm in which cylinder the high-frequency misfire was concentrated.

  • Referring to the following contents of the Freeze Frame Data (or the pending Freeze Frame Data) enables an estimation of which cylinder has misfired and to what degree.
    • Misfire Count Cylinder #1 to #3: Misfire count according to cylinder.
    • Catalyst OT Misfire Fuel Cut Cylinder #1 to #3: This expresses a high-frequency misfire was concentrated in a certain cylinder and that cylinder's fuel injection was stopped.
  • If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
  • If the misfire does not recur when the vehicle is brought to the workshop, reproduce the conditions stored in the ECM as Freeze Frame Data.
  • If the misfire still cannot be reproduced even though the conditions stored in the ECM as Freeze Frame Data have been reproduced, one of the following factors is considered to be a possible cause of the problem:
    1. There was insufficient fuel in the tank.
    2. Improper fuel was used.
    3. The spark plugs have been contaminated.
    4. The problem requires further diagnosis.
  • After finishing repairs, check the misfire counts of the cylinders (Misfire Count Cylinder #1 to Misfire Count Cylinder #3).
  • Be sure to confirm that no misfiring cylinder DTCs are stored again by performing the confirmation driving pattern after finishing repairs.
  • For 6 cylinder engine, the ECM intentionally does not set the specific misfiring cylinder DTCs at high engine speed. If misfires occur only in high engine speed areas, only DTC P030000 is set.

    In the event of DTC P030000 being present, perform the following operations:

    1. Clear the DTCs.

      Click here

    2. Start the engine and conduct the confirmation driving pattern.
    3. Read the misfiring counts of each cylinder or DTC(s) using the GTS.
    4. Repair the cylinder(s) that has a high misfiring rate or is indicated by the DTC.
    5. After finishing repairs, conduct the confirmation driving pattern again, in order to verify that DTC P030000 is not set.
  • When one of Short FT B1S1, Long FT B1S1 in the Freeze Frame Data is outside the range of +/-20%, the air fuel ratio may be rich (-20% or less) or lean (+20% or higher).
  • When Coolant Temperature in the Freeze Frame Data is less than 75°C (167°F), the misfires have occurred only while warming up the engine.
  • Vehicle body vibration caused by an extremely imbalanced drive wheel may cause misfire DTCs to be stored.
  • When a torsional characteristic abnormality has occurred in the flywheel sub-assembly, misfire DTCs may be stored when idling.
  • Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS)

(a) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

P030000, P030027, P030085, P030100, P030200 and/or P030300 are output

A

P030000, P030027, P030085, P030100, P030200 and/or P030300 and other DTCs are output

B

HINT:

If any DTCs other than P030000, P030027, P030085, P030100, P030200 and/or P030300 are output, troubleshoot those DTCs first.

B

GO TO DTC CHART

A

2.

CHECK PCV VALVE AND HOSE CONNECTIONS

(a) Check the PCV hose connections.

(b) Check the PCV valve.

Click here

OK:

PCV hose and PCV valve are connected correctly and are not damaged.

NG

REPAIR OR REPLACE PCV VALVE OR HOSE

OK

3.

READ VALUE USING GTS (MISFIRE RPM AND MISFIRE LOAD)

(a) Enter the following menus.

Powertrain > Engine > Data List

Tester Display

Misfire RPM

Misfire Load

(b) Read and note the Misfire RPM and Misfire Load values.

HINT:

The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred.

NEXT

4.

READ VALUE USING GTS (CATALYST OT MISFIRE FUEL CUT)

(a) Enter the following menus.

Powertrain > Engine > Data List

Tester Display

Catalyst OT Misfire Fuel Cut

(b) Read the value displayed on the GTS.

Data List

Result

Proceed to

Catalyst OT Misfire Fuel Cut

Avail

A

Not Avl

B

B

GO TO STEP 7

A

5.

READ FREEZE FRAME DATA (CATALYST OT MISFIRE FUEL CUT HISTORY)

(a) Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.

Click here

Freeze Frame Data Item

Result

Proceed to

Catalyst OT Misfire Fuel Cut History

ON

A

OFF

B

B

GO TO STEP 7

A

6.

CHECK MISFIRE COUNT OF PORT INJECTION

(a) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

(b) Enter the following menus.

Powertrain > Engine > Active Test

Active Test Display

Prohibit the Catalyst OT Misfire Prevent Fuel Cut

Data List Display

Injection Mode

Misfire Count Cylinder #1

Misfire Count Cylinder #2

Misfire Count Cylinder #3

(c) Read each value for Misfire Count Cylinder #1 to Misfire Count Cylinder #3 and Injection Mode displayed on the GTS while performing the Active Test.

Injection Mode

Misfire Count

Proceed to

Port

1 or 2 cylinders have misfire counts

A

3 cylinders or more have misfire counts

There are no misfire counts

B

A

GO TO STEP 8

B

GO TO STEP 11

7.

CHECK MISFIRE COUNT OF PORT INJECTION

(a) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

(b) Enter the following menus.

Powertrain > Engine > Active Test

Active Test Display

Control the Injection Mode

Data List Display

Injection Mode

Misfire Count Cylinder #1

Misfire Count Cylinder #2

Misfire Count Cylinder #3

(c) According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Port. If no misfire counts occur in any cylinders, perform procedure [A] and [B] and then check the misfire counts again.

(1) Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using GTS (Misfire RPM and Misfire Load)" procedures above [A].

(2) Read the Injection Mode and Misfire Count Cylinder #1 to Misfire Count Cylinder #3 or DTCs displayed on the GTS [B].

Injection Mode

Misfire Count

Proceed to

Port

1 or 2 cylinders have misfire counts

A

3 cylinders or more have misfire counts

There are no misfire counts

B

B

GO TO STEP 11

A

8.

CHECK MISFIRE COUNT OF DIRECT INJECTION

(a) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

(b) Enter the following menus.

Powertrain > Engine > Active Test

Active Test Display

Control the Injection Mode

Data List Display

Injection Mode

Misfire Count Cylinder #1

Misfire Count Cylinder #2

Misfire Count Cylinder #3

(c) According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct. If no misfire counts occur in any cylinders, perform procedure [A] and [B] and then check the misfire counts again.

(1) Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using GTS (Misfire RPM and Misfire Load)" procedures above [A].

(2) Read the Injection Mode and Misfire Count Cylinder #1 to Misfire Count Cylinder #3 or DTCs displayed on the GTS [B].

Misfire Count

Proceed to

Port (Result of step 6 or 7)

Direct

1 or 2 cylinders have misfire counts

1 or 2 cylinders have misfire counts

A

3 cylinders or more have misfire counts

3 cylinders or more have misfire counts

B

1 or 2 cylinders have misfire counts

There are no misfire counts

C

3 cylinders or more have misfire counts

There are no misfire counts

D

HINT:

Perform "Inspection After Repair" after replacing the port fuel injector assembly.

Click here

A

GO TO STEP 14

B

GO TO STEP 17

C

REPLACE PORT FUEL INJECTOR ASSEMBLY (MISFIRING CYLINDER)

D

9.

CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)

(a) Check the fuel pressure (for low pressure side).

Click here

HINT:

Perform "Inspection After Repair" after replacing the port fuel injector assembly.

Click here

OK

REPLACE PORT FUEL INJECTOR ASSEMBLY (MISFIRING CYLINDER)

NG

10.

CHECK FUEL LINE

(a) Check the fuel lines for leaks or blockage.

HINT:

Perform "Inspection After Repair" after replacing the fuel pump (for low pressure side).

Click here

OK

GO TO FUEL PUMP CONTROL CIRCUIT

NG

REPAIR OR REPLACE FUEL SYSTEM

11.

CHECK MISFIRE COUNT OF DIRECT INJECTION

(a) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

(b) Enter the following menus.

Powertrain > Engine > Active Test

Active Test Display

Control the Injection Mode

Data List Display

Injection Mode

Misfire Count Cylinder #1

Misfire Count Cylinder #2

Misfire Count Cylinder #3

(c) According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct. If no misfire counts occur in any cylinders, perform procedure [A] and [B] and then check the misfire counts again.

(1) Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using GTS (Misfire RPM and Misfire Load)" procedures above [A].

(2) Read the Injection Mode and Misfire Count Cylinder #1 to Misfire Count Cylinder #3 or DTCs displayed on the GTS [B].

Misfire Count

Proceed to

Port (Result of step 6 or 7)

Direct

There are no misfire counts

There are misfire counts

A

There are no misfire counts

There are no misfire counts

B

HINT:

Perform "Inspection After Repair" after replacing the direct fuel injector assembly.

Click here

A

REPLACE DIRECT FUEL INJECTOR ASSEMBLY

B

12.

CLEAR DTC

(a) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(b) Turn the ignition switch off and wait for at least 30 seconds.

NEXT

13.

CHECK MISFIRE COUNT

(a) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

(b) Enter the following menus.

Powertrain > Engine > Data List

Tester Display

Injection Mode

Misfire Count Cylinder #1

Misfire Count Cylinder #2

Misfire Count Cylinder #3

Misfire RPM

Misfire Load

(c) Drive the vehicle with Misfire RPM and Misfire Load.

(d) Monitor all of the misfire count values and Injection Mode displayed on the GTS.

Misfire Count

Injection Mode

Proceed to

There are no misfire counts

-

A

1 or 2 cylinders have misfire counts

Port or Either

B

3 cylinders or more have misfire counts

Port or Either

C

There are misfire counts

Direct

D

HINT:

Perform "Inspection After Repair" after replacing the direct fuel injector assembly.

Click here

A

CHECK FOR INTERMITTENT PROBLEMS

C

GO TO STEP 17

D

REPLACE DIRECT FUEL INJECTOR ASSEMBLY

B

14.

INSPECT SPARK PLUG

(a) Inspect the spark plug of the misfiring cylinder.

Click here

HINT:

Perform "Inspection After Repair" after replacing the spark plug.

Click here

NG

REPLACE SPARK PLUG

OK

15.

CHECK FOR SPARK (SPARK TEST)

(a) Perform a spark test.

Click here

HINT:

  • If the result of the spark test is normal, proceed to the next step.
  • Perform "Inspection After Repair" after replacing the spark plug or ignition coil assembly.

    Click here

NEXT

16.

CHECK CYLINDER COMPRESSION PRESSURE

(a) Measure the cylinder compression pressure of the misfiring cylinder.

Click here

HINT:

Perform "Inspection After Repair" after repairing or replacing the engine assembly.

Click here

OK

REPLACE ECM

NG

CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION

17.

CHECK INTAKE SYSTEM

(a) Check the intake system for vacuum leaks.

Click here

OK:

No leaks from intake system.

HINT:

Perform "Inspection After Repair" after repairing or replacing the intake system.

Click here

NG

REPAIR OR REPLACE INTAKE SYSTEM

OK

18.

READ VALUE USING GTS (COOLANT TEMPERATURE)

(a) Enter the following menus.

Powertrain > Engine > Data List

Tester Display

Coolant Temperature

(b) Read the Data List twice, when the engine is both cold and warmed up.

Standard:

GTS Display

Condition

Specified Condition

Coolant Temperature

Cold engine

Same as ambient air temperature

After fully warming up

Between 75 and 105°C (167 and 221°F)

HINT:

  • The engine can be judged as fully warmed up after warming up the engine with the air conditioning off until the electric cooling fan starts to operate.
  • Leaving the vehicle overnight allows the engine temperature to be the same as the ambient temperature.
  • Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

    Click here

NG

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

OK

19.

INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

Click here

NG

GO TO STEP 21

OK

20.

CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN)

(a) Remove the cylinder head cover sub-assembly.

*a

Timing Mark

*b

TDC Timing Mark

*c

Groove

(b) Turn the crankshaft pulley and align its groove with the TDC timing mark of the timing chain cover.

(c) Check that the timing marks of the camshaft timing gear assemblies and camshaft timing exhaust gear assemblies are at the positions shown in the illustration.

HINT:

If the timing marks are not as shown, turn the crankshaft one revolution clockwise.

OK:

Timing marks on camshaft timing gear assemblies and camshaft timing exhaust gear assemblies are at the positions shown in the illustration.

HINT:

If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.

OK

GO TO STEP 21

NG

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

21.

CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION)

(a) Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM.

Click here

HINT:

Repair any problems.

NEXT

22.

CLEAR DTC

(a) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(b) Turn the ignition switch off and wait for at least 30 seconds.

NEXT

23.

CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS)

(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(b) Enter the following menus.

Powertrain > Engine > Utility

Tester Display

All Readiness

(c) Input the DTC: P030000, P030027, P030085, P030100, P030200 and/or P030300.

(d) Check the DTC judgment result.

Result

Proceed to

NORMAL

(DTCs are not output)

A

ABNORMAL

(P030000, P030027, P030085, P030100, P030200 and/or P030300 is output)

B

A

END

B

24.

CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)

(a) Disconnect the mass air flow meter sub-assembly connector.

(b) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D23-3(VCC) - D104-84(VCVG)

Always

Below 1 Ω

D23-1(FG) - D104-107(VG)

Always

Below 1 Ω

D23-2(E2G) - D104-83(E2G)

Always

Below 1 Ω

D23-3(VCC) or D104-84(VCVG) - Body ground and other terminals

Always

10 kΩ or higher

D23-1(FG) or D104-107(VG) - Body ground and other terminals

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

25.

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

Click here

HINT:

  • If the results of the inspections performed in step 19 (READ VALUE USING GTS (MASS AIR FLOW SENSOR)) indicate no problem, proceed to the next step without replacing the mass air flow meter sub-assembly.
  • Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

    Click here

NEXT

26.

CLEAR DTC

(a) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(b) Turn the ignition switch off and wait for at least 30 seconds.

NEXT

27.

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(b) Enter the following menus.

Powertrain > Engine > Utility

Tester Display

All Readiness

(c) Input the DTC: P030000, P030027, P030085, P030100, P030200 and/or P030300.

(d) Check the DTC judgment result.

Result

Proceed to

NORMAL

(DTCs are not output)

A

ABNORMAL

(P030000, P030027, P030085, P030100, P030200 and/or P030300 is output)

B

A

END

B

REPLACE ECM

    Turbocharger/Supercharger Wastegate Solenoid "A" Circuit Open (P024313)

    DESCRIPTION The waste gate valve is built into the turbine housing and is operated by the vacuum regulating valve assembly. The ECM uses duty control to open and close the vacuum regulating valve assembly...

    Knock Sensor 1 Bank 1 or Single Sensor Circuit Short to Ground (P032511)

    DESCRIPTION A flat-type knock control sensor (non-resonant type) has a structure that can detect vibrations between approximately 5 and 23 kHz. The knock control sensor is fitted onto the engine block to detect engine knocking...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Removal


    REMOVAL PROCEDURE 1. REMOVE DECK TRIM SIDE PANEL ASSEMBLY LH Click here 2. REMOVE RADIO SETTING CONDENSER NOTICE: When the terminal cover is removed, the radio setting condenser must be replaced because the terminal cover and condenser are supplied as a set...

    Toyota Yaris XP210 (2020-2022) Owner's Manual: Traction Control System (TCS)


    The Traction Control System (TCS) enhances traction and safety by controlling engine torque and braking. When the TCS detects driving wheel slippage, it lowers engine torque and operates the brakes to prevent loss of traction. This means that on a slick surface, the engine adjusts automatically to provide optimum power to the drive wheels, limiting wheel spin and loss of traction...

    Categories

    Refueling

    Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.

    To open the fuel-filler lid, pull the remote fuel-filler lid release.

    Toyota Yaris. Refueling

    To remove the fuel-filler cap, turn it counterclockwise. Attach the removed cap to the inner side of the fuel-filler lid.

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