SFI SYSTEM, Diagnostic DTC:P017100, P017200, P117000, P117B00

DTC Code DTC Name
P017100 System Too Lean Bank 1
P017200 System Too Rich Bank 1
P117000 Fuel Performance/Port Injector
P117B00 Fuel Performance/Direct Injector

DESCRIPTION

The fuel trim is related to the feedback compensation value, not to the basic injection duration. The fuel trim consists of both the short-term and long-term fuel trims.

The short-term fuel trim is fuel compensation that is used to constantly maintain the air fuel ratio at stoichiometric levels. The signal from the air fuel ratio sensor indicates whether the air fuel ratio is rich or lean compared to the stoichiometric ratio. This triggers a reduction in the fuel injection volume if the air fuel ratio is rich and an increase in the fuel injection volume if lean.

Factors such as individual engine differences, wear over time and changes in operating environment cause short-term fuel trim to vary from the central value. The long-term fuel trim, which controls overall fuel compensation, compensates for long-term deviations in the fuel trim from the central value caused by the short-term fuel trim compensation.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P017100 System Too Lean Bank 1 With a warm engine and stable air fuel ratio feedback, the fuel trim is considerably in error to the lean side (2 trip detection logic).

  • Intake system

  • Port fuel injector assembly

  • Direct fuel injector assembly

  • Mass air flow meter sub-assembly

  • Engine coolant temperature sensor

  • Fuel pressure

  • Fuel pressure sensor (for high pressure side)

  • Gas leak from exhaust system

  • Open or short in air fuel ratio sensor circuit

  • Air fuel ratio sensor

  • Purge VSV

  • PCV valve and hose

  • PCV hose connections

  • Wire harness or connector

  • ECM

 Comes on (Euro-OBD) / - (Except Euro-OBD) DTC stored (Euro-OBD) / - (Except Euro-OBD)

SAE Code:

P0171
P017200 System Too Rich Bank 1 With a warm engine and stable air fuel ratio feedback, the fuel trim is considerably in error to the rich side (2 trip detection logic).

  • Port fuel injector assembly

  • Direct fuel injector assembly

  • Mass air flow meter sub-assembly

  • Engine coolant temperature sensor

  • Ignition system

  • Fuel pressure

  • Fuel pressure sensor (for high pressure side)

  • Gas leak from exhaust system

  • Open or short in air fuel ratio sensor circuit

  • Air fuel ratio sensor

  • Wire harness or connector

  • ECM

 Comes on (Euro-OBD) / - (Except Euro-OBD) DTC stored (Euro-OBD) / - (Except Euro-OBD)

SAE Code:

P0172
P117000 Fuel Performance/Port Injector Although a DTC is stored for a rich or lean condition, the amount of fuel trim during direct injection is normal (1 trip detection logic)

  • Port fuel injector assembly

  • Direct fuel injector assembly

  • Fuel pressure

  • ECM

 Does not come on (Euro-OBD) / - (Except Euro-OBD) DTC stored (Euro-OBD) / - (Except Euro-OBD)

SAE Code:

P1170
P117B00 Fuel Performance/Direct Injector Although a DTC is stored for a rich or lean condition, the amount of fuel trim during port injection is normal (1 trip detection logic)

  • Port fuel injector assembly

  • Direct fuel injector assembly

  • Fuel pressure

  • ECM

 Does not come on (Euro-OBD) / - (Except Euro-OBD) DTC stored (Euro-OBD) / - (Except Euro-OBD)

SAE Code:

P117B

Tech Tips


  • When DTC P017100 is stored, the actual air fuel ratio is on the lean side. When DTC P017200 is stored, the actual air fuel ratio is on the rich side.

  • If the vehicle runs out of fuel, the air fuel ratio is lean and DTC P017100 may be stored. The MIL is then illuminated.

  • When DTC P117000 or P117B00 is output, it may not be possible to precisely determine whether the port injection or the direct injection is malfunctioning, depending on the conditions. In this case, perform an Active Test (Control the Injection Mode) to determine which injection system is malfunctioning.

MONITOR DESCRIPTION

Under closed loop fuel control, fuel injection volumes that deviate from those estimated by the ECM cause changes in the long-term fuel trim compensation value. The long-term fuel trim is adjusted when there are persistent deviations in the short-term fuel trim values. Deviations from the fuel injection volumes estimated by the ECM also affect the average fuel trim learned value, which is a combination of the average short-term fuel trim (fuel feedback compensation value) and the average long-term fuel trim (learned value of the air fuel ratio). If the average fuel trim learned value exceeds the malfunction thresholds, the ECM interprets this as a fault in the fuel system and stores a DTC.

Example:

The average fuel trim learned value is +35% or higher, or -35% or less, the ECM interprets this as a fuel system malfunction.

B005OSRE07

MONITOR STRATEGY

Required Sensors/Components

Air fuel ratio sensor

Mass air flow meter sub-assembly

Crankshaft position sensor
Frequency of Operation Continuous

TYPICAL ENABLING CONDITIONS

Fuel system status Closed loop
Battery voltage 11 V or higher
Either of the following conditions is met 1 or 2
1. Engine speed Less than 1100 rpm
2. Engine load 10% or higher

TYPICAL MALFUNCTION THRESHOLDS

P017100 and P017200: Fuel Trim
EVAP purge-cut Executing
Either of the following conditions is met 1 or 2
1. Average between short-term fuel trim and long-term fuel trim 35% or higher (varies with engine coolant temperature)
2. Average between short-term fuel trim and long-term fuel trim -35% or less (varies with engine coolant temperature)
P117000: Fuel Trim (Port Injection Fail)
DTCs of fuel system have already been set -
EVAP purge-cut Executing
Injection mode Direct
Both of the following conditions are met 1 and 2
1. Average between short-term fuel trim and long-term fuel trim Less than 48% (varies with engine coolant temperature)
2. Average between short-term fuel trim and long-term fuel trim Higher than -35% (varies with engine coolant temperature)
P117B00: Fuel Trim (Direct Injection Fail)
DTCs of fuel system have already been set -
EVAP purge-cut Executing
Injection mode Port
Both of the following conditions are met 1 and 2
1. Average between short-term fuel trim and long-term fuel trim Less than 48% (varies with engine coolant temperature)
2. Average between short-term fuel trim and long-term fuel trim Higher than -35% (varies with engine coolant temperature)

CONFIRMATION DRIVING PATTERN

B005PWPE26

  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for at least 30 seconds.

  5. Turn the engine switch on (IG) and turn the GTS on [A].

  6. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off [B].

  7. With the engine warmed up, idle the engine for 2 minutes or more [C].

  8. Drive the vehicle at a speed between 60 and 100 km/h (37 and 62 mph) for 5 minutes or more [D].

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

  9. Enter the following menus: Powertrain / Engine / Trouble Codes [E].

  10. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If no pending DTC is output, the system is normal.

WIRING DIAGRAM


CAUTION / NOTICE / HINT

Note

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

Tech Tips


  • Sensor 1 refers to the sensor closest to the engine assembly.

  • Sensor 2 refers to the sensor farthest away from the engine assembly.

  • A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.

  • A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.

  • 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 DTC P017100, P017200, P117000 OR P117B00)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Trouble Codes.

    5. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P017100, P017200, P117000 or P117B00 is output A
      DTC P017100, P017200, P117000 and/or P117B00 and other DTCs are output B

      Tech Tips

      If any DTCs other than P017100, P017200, P117000 or P117B00 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION MODE)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Start the engine and warm it up.

    5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Data List / Injection Mode, Short FT Bank 1 and Long FT Bank 1.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the Injection Mode
      Data List Display
      Injection Mode
      Short FT Bank 1
      Long FT Bank 1

      Tech Tips


      • When using the "Control the Injection Mode" Active Test to check the condition of the engine, switch from "Port" to "Direct".

      • Do not switch from "Direct" to "Port". When performing the inspection more than once, after the Active Test ends, lightly race the engine, and then perform the inspection from "Port" again.

      • If the display does not switch from "Port" even after lighting racing the engine, idle the engine for approximately 1 minute, and then lightly race the engine.

    6. According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Port.

      OK
      Short FT Bank 1 + Long FT Bank 1 = Between -19% and +19% (Port Injection).

    7. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Data List / Injection Mode, Short FT Bank 1 and Long FT Bank 1.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the Injection Mode
      Data List Display
      Injection Mode
      Short FT Bank 1
      Long FT Bank 1

      Tech Tips


      • When using the "Control the Injection Mode" Active Test to check the condition of the engine, switch from "Port" to "Direct".

      • Do not switch from "Direct" to "Port". When performing the inspection more than once, after the Active Test ends, lightly race the engine, and then perform the inspection from "Port" again.

      • If the display does not switch from "Port" even after lighting racing the engine, idle the engine for approximately 1 minute, and then lightly race the engine.

    8. According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct.

      OK
      Short FT Bank 1 + Long FT Bank 1 = Between -19% and +19% (Direct Injection).
      Result
      Item Proceed to
      Port Direct
      OK OK A
      OK NG B
      NG OK C
      NG NG D

    B

    READ VALUE USING GTS (FUEL PRESSURE (HIGH)) Click here

    C

    INSPECT PORT FUEL INJECTOR ASSEMBLY Click here

    D

    INSPECT PURGE VSV Click here

    A

  3. CHECK IF VEHICLE HAS RUN OUT OF FUEL IN PAST


    1. Has the vehicle run out of fuel in the past?

      Result
      Proceed to
      YES
      NO

    YES

    DTC CAUSED BY RUNNING OUT OF FUEL

    NO

    CHECK FOR INTERMITTENT PROBLEMS Click here

  4. READ VALUE USING GTS (FUEL PRESSURE (HIGH))


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Coolant Temperature and Fuel Pressure (High).


      Powertrain > Engine > Data List
      Tester Display
      Engine Speed
      Coolant Temperature
      Fuel Pressure (High)

    5. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off.

    6. Read Fuel Pressure (High) with the engine speed at 3000 rpm.

      Standard
      GTS Display Condition Specified Condition
      Fuel Pressure (High)

      Shift lever position: P

      A/C: Off

      Engine warmed up

      Engine Speed: 3000 rpm

      		 4000 to 8000 kPag
      Result
      Proceed to
      OK
      NG

    NG

    CHECK MISFIRE COUNT OF DIRECT INJECTION Click here

    OK

  5. PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION MODE (DIRECT))


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) and turn the GTS on.

    3. Start the engine and warm it up.

    4. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Data List / High Pressure Fuel Pump Duty Ratio (D4), Injection Mode, Short FT Bank 1 and Long FT Bank 1.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the Injection Mode
      Data List Display
      High Pressure Fuel Pump Duty Ratio (D4)
      Injection Mode
      Short FT Bank 1
      Long FT Bank 1

      Tech Tips


      • When using the "Control the Injection Mode" Active Test to check the condition of the engine, switch from "Port" to "Direct".

      • Do not switch from "Direct" to "Port". When performing the inspection more than once, after the Active Test ends, lightly race the engine, and then perform the inspection from "Port" again.

      • If the display does not switch from "Port" even after lighting racing the engine, idle the engine for approximately 1 minute, and then lightly race the engine.

    5. According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct.

      Tech Tips

      The A/C switch and all accessory switches should be off, and the shift lever should be in the P position, and the engine should be fully warmed up.

      Result
      Item Proceed to
      Injection Mode High Pressure Fuel Pump Duty Ratio (D4) Short FT Bank 1 + Long FT Bank 1
      Direct 10% to 40% - A
      40% or higher -20% or less B
      10% or less +20% or higher
      40% or higher +20% or higher C
      10% or less -20% or less D

      Tech Tips

      Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).

      Click here


    B

    REPLACE FUEL DELIVERY PIPE SUB-ASSEMBLY (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE)) Click here

    C

    GO TO STEP 8 Click here

    D

    REPLACE ECM Click here

    A

  6. PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION MODE (DIRECT))


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) and turn the GTS on.

    3. Start the engine and warm it up.

    4. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Data List / High Pressure Fuel Pump Duty Ratio (D4), Injection Mode, Short FT Bank 1 and Long FT Bank 1.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the Injection Mode
      Data List Display
      High Pressure Fuel Pump Duty Ratio (D4)
      Injection Mode
      Short FT Bank 1
      Long FT Bank 1

      Tech Tips


      • When using the "Control the Injection Mode" Active Test to check the condition of the engine, switch from "Port" to "Direct".

      • Do not switch from "Direct" to "Port". When performing the inspection more than once, after the Active Test ends, lightly race the engine, and then perform the inspection from "Port" again.

      • If the display does not switch from "Port" even after lighting racing the engine, idle the engine for approximately 1 minute, and then lightly race the engine.

    5. According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct.

      Tech Tips

      The A/C switch and all accessory switches should be off, and the shift lever should be in the P position, and the engine should be fully warmed up.

      Result
      Item Proceed to
      Injection Mode High Pressure Fuel Pump Duty Ratio (D4) Short FT Bank 1 + Long FT Bank 1
      Direct 10% to 40% -25% or less A
      10% to 40% +25% or higher
      10% to 40% -25% to +25% B

      Tech Tips

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

      Click here


    A

    REPLACE DIRECT FUEL INJECTOR ASSEMBLY Click here

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

  7. CHECK MISFIRE COUNT OF DIRECT INJECTION


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Start the engine and warm it up.

    5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Data List / Injection Mode and Misfire Count Cylinder #1 to Misfire Count Cylinder #4.


      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
      Misfire Count Cylinder #4

      Tech Tips


      • When using the "Control the Injection Mode" Active Test to check the condition of the engine, switch from "Port" to "Direct".

      • Do not switch from "Direct" to "Port". When performing the inspection more than once, after the Active Test ends, lightly race the engine, and then perform the inspection from "Port" again.

      • If the display does not switch from "Port" even after lighting racing the engine, idle the engine for approximately 1 minute, and then lightly race the engine.

    6. According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct.

      Tech Tips

      The A/C switch and all accessory switches should be off, and the shift lever should be in the P position, and the engine should be fully warmed up.

      Result
      Injection Mode Misfire Count Proceed to
      Direct No misfire counts, or misfire counts occur randomly in all cylinders A
      Misfire counts occur in particular cylinder B

      Tech Tips

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

      Click here


    B

    REPLACE DIRECT FUEL INJECTOR ASSEMBLY Click here

    A

  8. REPLACE FUEL PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE)


    1. Replace the fuel pump assembly (for high pressure side).

      Click here

      Tech Tips

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

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  9. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the engine switch off and wait for at least 30 seconds.

    6. Turn the engine switch on (IG).

    7. Turn the GTS on.

    8. Start the engine and warm it up.

    9. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    10. Enter the following menus: Powertrain / Engine / Trouble Codes.

    11. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P017100, P017200, P117000 and/or P117B00 are output A
      DTCs are not output B

    A

    REPLACE ECM Click here

    B

    END

  10. INSPECT PORT FUEL INJECTOR ASSEMBLY


    1. Inspect the injection volume (whether fuel volume is high or low, and whether injection pattern is poor).

      Click here

      Tech Tips

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

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPLACE PORT FUEL INJECTOR ASSEMBLY Click here

  11. INSPECT PURGE VSV


    1. Inspect the purge VSV.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PURGE VSV Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)


    1. Disconnect the purge VSV connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D12-2 - D1-70 (PRG) Always Below 1 Ω
      D12-2 or D1-70 (PRG) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. CHECK PCV HOSE CONNECTIONS

    A01VWSR

    1. Check the PCV hose connections.

      OK
      PCV valve and hose are connected correctly and are not damaged.
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE PCV HOSE

    OK

  14. CHECK INTAKE SYSTEM


    1. Check the intake system for vacuum leaks.

      Click here

      OK
      No leaks from the intake system.

      Tech Tips

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

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE INTAKE SYSTEM

    OK

  15. PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) and turn the GTS on.

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

    4. Warm up the air fuel ratio sensor at an engine speed of 2500 rpm for 90 seconds.

    5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / Data List / A/F (O2) Sensor Voltage B1S1 and O2 Sensor Voltage B1S2.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the Injection Volume for A/F Sensor
      Data List Display
      A/F (O2) Sensor Voltage B1S1
      O2 Sensor Voltage B1S2

    6. Perform the Control the Injection Volume for A/F Sensor for operation with the engine idling (change the fuel injection volume).

    7. Monitor the voltage outputs of the air fuel ratio sensor and the heated oxygen sensor (A/F (O2) Sensor Voltage B1S1 and O2 Sensor Voltage B1S2) displayed on the GTS.

      Tech Tips


      • The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 12.5%.

      • The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

      • If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

      Standard
      GTS Display (Sensor) Injection Volume Status Voltage

      A/F (O2) Sensor Voltage B1S1

      (Air fuel ratio)

      		 12.5% Rich Below 3.1 V
      -12.5% Lean Higher than 3.4 V

      O2 Sensor Voltage B1S2

      (Heated oxygen)

      		 12.5% Rich Higher than 0.55 V
      -12.5% Lean Below 0.4 V
      Result
      Status of A/F (O2) Sensor Voltage B1S1 Status of O2 Sensor Voltage B1S2 Air Fuel Ratio Condition and Air Fuel Ratio Sensor Condition Suspected Trouble Area Proceed to
      Lean/Rich Lean/Rich Normal - A
      Lean Lean Actual air fuel ratio lean

      • PCV valve and hose

      • PCV hose connections

      • Gas leak from exhaust system

      • Intake system

      • Fuel pressure

      • Mass air flow meter sub-assembly

      • Engine coolant temperature sensor
      Rich Rich Actual air fuel ratio rich

      • Gas leak from exhaust system

      • Ignition system

      • Fuel pressure

      • Mass air flow meter sub-assembly

      • Engine coolant temperature sensor
      Lean Lean/Rich Air fuel ratio sensor malfunction

      • Air fuel ratio sensor

      		 B
      Rich Lean/Rich Air fuel ratio sensor malfunction

      • Air fuel ratio sensor

      • Lean: During Control the Injection Volume for A/F Sensor, the air fuel ratio sensor output voltage (A/F (O2) Sensor Voltage B1S1) is consistently higher than 3.4 V, and the heated oxygen sensor output voltage (O2 Sensor Voltage B1S2) is consistently below 0.4 V.

      • Rich: During Control the Injection Volume for A/F Sensor, the A/F (O2) Sensor Voltage B1S1 is consistently below 3.1 V, and the O2 Sensor Voltage B1S2 is consistently higher than 0.55 V.

      • Lean/Rich: During Control the Injection Volume for A/F Sensor of the Active Test, the output voltage of the air fuel ratio sensor or heated oxygen sensor alternates correctly.

      Tech Tips

      Refer to "Data List / Active Test" [A/F (O2) Sensor Voltage B1S1 and O2 Sensor Voltage B1S2].

      Click here


    B

    INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Click here

    A

  16. READ VALUE USING GTS (COOLANT TEMPERATURE)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.


      Powertrain > Engine > Data List
      Tester Display
      Coolant Temperature

    5. 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
      Warm engine Between 75 and 100°C (167 and 212°F)

      Tech Tips

      Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR Click here

    OK

  17. READ VALUE USING GTS (MASS AIR FLOW SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature.


      Powertrain > Engine > Data List
      Tester Display
      Engine Speed
      Mass Air Flow Sensor
      Coolant Temperature

    5. Allow the engine to idle until Coolant Temperature reaches 75°C (167°F) or higher.

    6. Read Mass Air Flow Sensor while maintaining an engine speed of 3000 rpm.

      Standard
      GTS Display Condition Specified Condition
      Mass Air Flow Sensor

      Shift lever position: P

      A/C: Off

      Engine warmed up

      Engine Speed: 3000 rpm

      		 Between 6.0 gm/sec and 18.0 gm/sec
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 26 Click here

    OK

  18. CHECK FOR EXHAUST GAS LEAK


    1. Check for exhaust gas leaks.

      OK
      No gas leaks.

      Tech Tips

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

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE EXHAUST SYSTEM

    OK

  19. CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)


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

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 25 Click here

    NG

  20. CHECK FUEL PUMP OPERATION (FOR LOW PRESSURE SIDE)


    1. Check the fuel pump operation (for low pressure side).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    CHECK FUEL PUMP CONTROL CIRCUIT Click here

    OK

  21. CHECK FUEL LEAK (FOR LOW PRESSURE SIDE)


    1. Check for fuel leaks (for low pressure side).

      OK
      No leaks.
      Result
      Proceed to
      OK
      NG

    OK

    CHECK AND REPLACE FUEL PUMP, FUEL MAIN VALVE ASSEMBLY, FUEL SUCTION PLATE SUB-ASSEMBLY, FUEL LINE AND FILTER

    NG

    REPAIR OR REPLACE FUEL SYSTEM (FOR LOW PRESSURE SIDE)

  22. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE)


    1. Inspect the air fuel ratio sensor.

      Click here

      Tech Tips

      Perform "Inspection After Repair" after replacing the air fuel ratio sensor.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE AIR FUEL RATIO SENSOR Click here

    OK

  23. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)


    1. Disconnect the air fuel ratio sensor connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D25-1 (HA1A) - D1-19 (HA1A) Always Below 1 Ω
      D25-3 (A1A+) - D1-131 (A1A+) Always Below 1 Ω
      D25-4 (A1A-) - D1-132 (A1A-) Always Below 1 Ω
      D25-1 (HA1A) or D1-19 (HA1A) - Body ground and other terminals Always 10 kΩ or higher
      D25-3 (A1A+) or D1-131 (A1A+) - Body ground and other terminals Always 10 kΩ or higher
      D25-4 (A1A-) or D1-132 (A1A-) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  24. REPLACE AIR FUEL RATIO SENSOR


    1. Replace the air fuel ratio sensor.

      Click here

      Tech Tips

      Perform "Inspection After Repair" after replacing the air fuel ratio sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  25. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the engine switch off and wait for at least 30 seconds.

    6. Turn the engine switch on (IG).

    7. Turn the GTS on.

    8. Start the engine and warm it up.

    9. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    10. Enter the following menus: Powertrain / Engine / Trouble Codes.

    11. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P017100, P017200, P117000 and/or P117B00 are output A
      DTCs are not output B

    B

    END

    A

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


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

      Click here

      Tech Tips

      Repair any problems.

      Result
      Proceed to
      NEXT

    NEXT

  27. CHECK WHETHER DTC OUTPUT RECURS (DTC P017100, P017200, P117000 OR P117B00)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the engine switch off and wait for at least 30 seconds.

    6. Turn the engine switch on (IG).

    7. Turn the GTS on.

    8. Start the engine and warm it up.

    9. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    10. Enter the following menus: Powertrain / Engine / Trouble Codes.

    11. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P017100, P017200, P117000 and/or P117B00 are output A
      DTCs are not output B

    B

    END

    A

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


    1. Disconnect the mass air flow meter sub-assembly connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D9-5 (VG) - D1-92 (VG) Always Below 1 Ω
      D9-4 (E2G) - D1-91 (E2G) Always Below 1 Ω
      D9-5 (VG) or D1-92 (VG) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  29. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY


    1. Replace the mass air flow meter sub-assembly.

      Click here

      Tech Tips


      • If the result of the inspection performed in step 17 indicated 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

      Result
      Proceed to
      NEXT

    NEXT

  30. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

    5. Turn the engine switch off and wait for at least 30 seconds.

    6. Turn the engine switch on (IG).

    7. Turn the GTS on.

    8. Start the engine and warm it up.

    9. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    10. Enter the following menus: Powertrain / Engine / Trouble Codes.

    11. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P017100, P017200, P117000 and/or P117B00 are output A
      DTCs are not output B

    A

    REPLACE ECM Click here

    B

    END