SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P017100, P017200, P017400, P017500, P117000, P117B00

DTC Code DTC Name
P017100 System Too Lean Bank 1
P017200 System Too Rich Bank 1
P017400 System Too Lean Bank 2
P017500 System Too Rich Bank 2
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

  • Fuel injector assembly (for port injection)

  • Fuel injector assembly (for direct injection)

  • 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 (bank 1 sensor 1) circuit

  • Air fuel ratio sensor (bank 1 sensor 1)

  • PCV valve and hose

  • PCV hose connections

  • Wire harness or connector

  • ECM

Comes on DTC stored 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).
  • Intake system

  • Fuel injector assembly (for port injection)

  • Fuel injector assembly (for direct injection)

  • 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 (bank 1 sensor 1) circuit

  • Air fuel ratio sensor (bank 1 sensor 1)

  • Wire harness or connector

  • ECM

Comes on DTC stored SAE Code: P0172
P017400 System Too Lean Bank 2 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

  • Fuel injector assembly (for port injection)

  • Fuel injector assembly (for direct injection)

  • 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 (bank 2 sensor 1) circuit

  • Air fuel ratio sensor (bank 2 sensor 1)

  • PCV valve and hose

  • PCV hose connections

  • Wire harness or connector

  • ECM

Comes on DTC stored SAE Code: P0174
P017500 System Too Rich Bank 2 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).
  • Intake system

  • Fuel injector assembly (for port injection)

  • Fuel injector assembly (for direct injection)

  • 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 (bank 2 sensor 1) circuit

  • Air fuel ratio sensor (bank 2 sensor 1)

  • Wire harness or connector

  • ECM

Comes on DTC stored SAE Code: P0175
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)
  • Fuel injector assembly (for port injection)

  • Fuel injector assembly (for direct injection)

  • Fuel pressure

  • ECM

Does not come on DTC stored 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)
  • Fuel injector assembly (for port injection)

  • Fuel injector assembly (for direct injection)

  • Fuel pressure

  • ECM

Does not come on DTC stored SAE Code: P117B

Tech Tips


  • When DTC P017100 or P017400 is stored, the actual air fuel ratio is on the lean side. When DTC P017200 or P017500 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 or P017400 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 +53% or higher, or -35% or less, the ECM interprets this as a fuel system malfunction.

B005OSRE25

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 650 rpm
2. Engine load 12% or higher

TYPICAL MALFUNCTION THRESHOLDS

P017100, P017200, P017400 and P017500: Fuel-Trim Lean/Rich
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 53% 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
Direct injection 100%
Both of the following conditions are met 1 and 2
1. Average between short-term fuel trim and long-term fuel trim Less than 53% (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
Port injection 100%
Both of the following conditions are met 1 and 2
1. Average between short-term fuel trim and long-term fuel trim Less than 53% (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


  • Bank 1 refers to the bank that includes the No. 1 cylinder*.

    *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.

  • Bank 2 refers to the bank that does not include the No. 1 cylinder.

  • 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, P017400, P017500, 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, P017400, P017500, P117000 or P117B00 is output A
      DTC P017100, P017200, P017400, P017500, P117000 and/or P117B00 and other DTCs are output B

      Tech Tips

      If any DTCs other than P017100, P017200, P017400, P017500, P117000 or P117B00 are output, troubleshoot those DTCs first.


    B
    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 / Port / Data List / Injection Mode, Short FT Bank 1, Long FT Bank 1, Short FT Bank 2 and Long FT Bank 2.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the Injection Mode
      Data List Display
      Injection Mode
      Short FT Bank 1
      Short FT Bank 2
      Long FT Bank 1
      Long FT Bank 2

      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. Read the values displayed on the GTS.

      OK
      Short FT Bank 1 (Bank 2) + Long FT Bank 1 (Bank 2) = Between -19% and 19% (Port Injection)
    7. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Direct / Data List / Injection Mode, Short FT Bank 1, Long FT Bank 1, Short FT Bank 2 and Long FT Bank 2.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the Injection Mode
      Data List Display
      Injection Mode
      Short FT Bank 1
      Short FT Bank 2
      Long FT Bank 1
      Long FT Bank 2

      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. Read the values displayed on the GTS.

      OK
      Short FT Bank 1 (Bank 2) + Long FT Bank 1 (Bank 2) = 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
    C
    D
    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
    NO
  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. Start the engine and warm it up.

    5. Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (High).


      Powertrain > Engine > Data List
      Tester Display
      Fuel Pressure (High)
    6. Read the values.

      Standard
      2400 to 19500 kPag (3000 rpm, engine warmed up, shift lever in P, A/C off).
      Result
      Proceed to
      OK
      NG

    NG
    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 / Direct / Data List / High Pressure Fuel Pump Duty Ratio (D4), Injection Mode, Short FT Bank 1, Long FT Bank 1, Short FT Bank 2 and Long FT Bank 2.


      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
      Short FT Bank 2
      Long FT Bank 1
      Long FT Bank 2

      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. Read the values displayed on the GTS.

      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 Short FT Bank 2 + Long FT Bank 2
      Direct 10% to 40% - - A
      40% or higher -20% or less -20% or less B
      10% or less 20% or higher 20% or higher
      40% or higher 20% or higher 20% or higher C
      10% or less -20% 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
    C
    D
    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 / Direct / Data List / High Pressure Fuel Pump Duty Ratio (D4), Injection Mode, Short FT Bank 1, Long FT Bank 1, Short FT Bank 2 and Long FT Bank 2.


      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
      Short FT Bank 2
      Long FT Bank 1
      Long FT Bank 2

      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. Read the values displayed on the GTS.

      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 Short FT Bank 2 + Long FT Bank 2
      Direct 10% to 40% -25% or less -25% or less A
      10% to 40% 30% or higher 30% or higher
      10% to 40% -25% or less -25% to 25% B
      10% to 40% 25% or higher -25% to 25%
      10% to 40% -25% to 25% -25% or less C
      10% to 40% -25% to 25% 25% or higher
      10% to 40% -25% to 25% -25% to 25% D

      Tech Tips

      Perform "Inspection After Repair" after replacing the fuel injector assembly (for direct injection).

      Click here


    A
    B
    C
    D
  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 / Direct / Data List / Injection Mode and Misfire Count Cylinder #1 to Misfire Count Cylinder #6.


      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
      Misfire Count Cylinder #5
      Misfire Count Cylinder #6

      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. Read the values displayed on the GTS.

      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 fuel injector assembly (for direct injection).

      Click here


    B
    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 (DTC P017100, P017200, P017400, P017500, 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
      DTCs are not output A
      DTC P017100, P017200, P017400, P017500, P117000 and/or P117B00 are output B

    A
    B
  10. INSPECT FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION)


    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 fuel injector assembly (for port injection).

      Click here

      Result
      Proceed to
      OK
      NG

    OK
    NG
  11. CHECK PCV HOSE CONNECTIONS


    1. Check the PCV hose connections.

      Click here

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

    NG
    OK
  12. 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
    OK
  13. 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 or A/F (O2) Sensor Voltage B2S1 and O2 Sensor Voltage B2S2.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the Injection Volume for A/F Sensor
      Data List Display
      A/F (O2) Sensor Voltage B1S1
      A/F (O2) Sensor Voltage B2S1
      O2 Sensor Voltage B1S2
      O2 Sensor Voltage B2S2
    6. Perform the Control the Injection Volume for A/F Sensor 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 or A/F (O2) Sensor Voltage B2S1 and O2 Sensor Voltage B2S2) 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

      A/F (O2) Sensor Voltage B2S1

      (Air fuel ratio)

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

      O2 Sensor Voltage B1S2

      O2 Sensor Voltage B2S2

      (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 or A/F (O2) Sensor Voltage B2S1 Status of O2 Sensor Voltage B1S2 or O2 Sensor Voltage B2S2 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 of the Active Test, the air fuel ratio sensor output voltage (A/F (O2) Sensor Voltage B1S1 or A/F (O2) Sensor Voltage B2S1) is consistently higher than 3.4 V, and the heated oxygen sensor output voltage (O2 Sensor Voltage B1S2 or O2 Sensor Voltage B2S2) is consistently below 0.4 V.

      • Rich: During Control the Injection Volume for A/F Sensor of the Active Test, the A/F (O2) Sensor Voltage B1S1 or A/F (O2) Sensor Voltage B2S1 is consistently below 3.1 V, and the O2 Sensor Voltage B1S2 or O2 Sensor Voltage B2S2 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, O2 Sensor Voltage B1S2, A/F (O2) Sensor Voltage B2S1 or O2 Sensor Voltage B2S2].

      Click here


    B
    A
  14. 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
    OK
  15. READ VALUE USING GTS (MASS AIR FLOW SENSOR)


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    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

      Engine warmed up

      Shift lever position: P

      A/C: Off

      Engine Speed: 3000 rpm

      Between 28.0 gm/sec and 34.0 gm/sec
      Result
      Proceed to
      OK
      NG

    NG
    OK
  16. 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
    OK
  17. CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE)


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

      Click here

      Result
      Proceed to
      OK
      NG

    OK
    NG
  18. CHECK FUEL LINE


    1. Check the fuel lines for leaks or blockage.

      Result
      Proceed to
      OK
      NG

    OK
    NG
  19. 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
    OK
  20. 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
      D24-1 (HA1A) - D2-52 (HA1A) Always Below 1 Ω
      D24-3 (A1A+) - D2-125 (A1A+) Always Below 1 Ω
      D24-4 (A1A-) - D2-126 (A1A-) Always Below 1 Ω
      D23-1 (HA2A) - D2-17 (HA2A) Always Below 1 Ω
      D23-3 (A2A+) - D2-123 (A2A+) Always Below 1 Ω
      D23-4 (A2A-) - D2-124 (A2A-) Always Below 1 Ω
      D24-1 (HA1A) or D2-52 (HA1A) - Body ground and other terminals Always 10 kΩ or higher
      D24-3 (A1A+) or D2-125 (A1A+) - Body ground and other terminals Always 10 kΩ or higher
      D24-4 (A1A-) or D2-126 (A1A-) - Body ground and other terminals Always 10 kΩ or higher
      D23-1 (HA2A) or D2-17 (HA2A) - Body ground and other terminals Always 10 kΩ or higher
      D23-3 (A2A+) or D2-123 (A2A+) - Body ground and other terminals Always 10 kΩ or higher
      D23-4 (A2A-) or D2-124 (A2A-) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG
    OK
  21. 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
  22. CONFIRM CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED (DTC P017100, P017200, P017400, P017500, 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
      DTCs are not output A
      DTC P017100, P017200, P017400, P017500, P117000 and/or P117B00 are output B

    A
    B
  23. 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
  24. CHECK WHETHER DTC OUTPUT RECURS (DTC P017100, P017200, P017400, P017500, 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
      DTCs are not output A
      DTC P017100, P017200, P017400, P017500, P117000 and/or P117B00 are output B

    A
    B
  25. 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
      D8-3 (5V) - D2-90 (VC) Always Below 1 Ω
      D8-1 (FG) - D2-116 (VG) Always Below 1 Ω
      D8-2 (E2G) - D2-115 (E2G) Always Below 1 Ω
      D8-3 (5V) or D2-90 (VC) - Body ground and other terminals Always 10 kΩ or higher
      D8-1 (FG) or D2-116 (VG) - Body ground and other terminals Always 10 kΩ or higher
      D8-2 (E2G) or D2-115 (E2G) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG
    OK
  26. 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 15 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
  27. 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
      DTCs are not output A
      DTC P017100, P017200, P017400, P017500, P117000 and/or P117B00 are output B

    A
    B