ECD SYSTEM(w/ Glow Plug Controller), Diagnostic DTC:P0087,P0088,P0191,P0A0F,P1229 and P1272

DTC Code DTC Name
P0087 Fuel Rail / System Pressure - Too Low
P0088 Fuel Rail / System Pressure - Too High
P0191 Fuel Rail Pressure Sensor Circuit Range / Performance
P0A0F Engine Failed to Start
P1229 Fuel Pump System
P1272 Fuel Pressure Regulator Circuit

DESCRIPTION

With a cold engine, the internal pressure of the common rail is regulated by the pressure control valve of the common rail assembly. With a warm engine, it is regulated by the suction control valve of the fuel supply pump. When the engine is running with light load, it is regulated by both the pressure control valve and the suction control valve. Based on signals from the ECM, the pressure control valve opens when sudden deceleration occurs to prevent the fuel pressure from becoming too high.

A358494E01

DTCs to indicate a fuel pressure malfunction (P0087, P0088, P0191, P0A0F, P1229 and P1272)

These DTCs are used to indicate in which mode a malfunction was detected. They do not indicate which part was malfunctioning when the fuel pressure malfunction was detected.

Tip:

All of the following DTCs can be detected when the engine speed is 630 rpm or higher.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0087

Fuel Rail / System Pressure - Too Low

Common rail internal pressure is less than 12000 to 15000 kPa (varies with engine speed) for 0.3 seconds.

(1 trip detection logic)

  • Suction control valve (supply pump assembly)

  • Open or short in pressure control valve (common rail assembly) circuit

  • Pressure control valve (common rail assembly)

  • Fuel filter element clogged

  • Fuel leak

  • Injector assembly

  • Lack of fuel

  • Fuel line (air bleeding)

  • ECM

Comes on

DTC stored

P0088

Fuel Rail / System Pressure - Too High

Common rail internal pressure is 175000 kPa or higher for 0.3 to 1.0 seconds.

(1 trip detection logic)

  • Suction control valve (supply pump assembly)

  • Open or short in suction control valve (supply pump assembly) circuit

  • Open or short in pressure control valve (common rail assembly) circuit

  • Pressure control valve (common rail assembly)

  • Fuel filter element clogged

  • Fuel leak

  • Injector assembly

  • Lack of fuel

  • Fuel line (air bleeding)

  • ECM

Comes on

DTC stored

P0191

Fuel Rail Pressure Sensor Circuit Range / Performance

After certain period of time has elapsed after the engine has stopped (pressure control valve releases common rail internal pressure during this period), common rail internal pressure deviates from normal range. (Determination of a malfunction is conducted within a given time after the ignition switch is turned from ON to off. If a malfunction is detected within this time, the MIL is illuminated and a DTC is stored when the ignition switch is next turned to ON.)

(1 trip detection logic)

  • Common rail assembly

  • ECM

  • Wire harness

Comes on

DTC stored

P0A0F

Engine Failed to Start

The engine speed is greater equal than the minimum threshold, but the pressure built up in the rail is not sufficient. (them, engine cannot start)

Detect during engine cranking

(2 trip detection logic)

  • Fuel line

  • Supply pump assembly

  • Common rail assembly

  • Injector assembly

  • ECM

-

DTC stored

P1229

Fuel Pump System

Both of following conditions 1 and 2 are met (1 trip detection logic).

  1. Common rail internal pressure is regulated using suction control valve (supply pump) while all of following conditions are met.*1

    - Fuel temperature is above 15°C (59°F).

    - A certain period of time (maximum 300 seconds) has elapsed after the engine has been started.

    - Medium or heavy load condition.

  2. Actual fuel pressure remains lower than target rail pressure (The actual fuel pressure remains 17000 to 20000 kPa or lower for 1 second. Although the pressure control valve has sufficiently closed afterward, the actual fuel pressure still remains low for 1 second.)

  • Suction control valve (supply pump assembly)

  • Open or short in suction control valve (supply pump assembly) circuit

  • Open or short in pressure control valve (common rail assembly) circuit

  • Pressure control valve (common rail assembly)

  • Fuel filter element clogged

  • Fuel leak

  • Injector assembly

  • Lack of fuel

  • Fuel line (air bleeding)

  • ECM

Comes on / -

DTC stored

P1272

Fuel Pressure Regulator Circuit

Both of the following conditions 1 and 2 are met (1 trip detection logic).

  1. Either of following conditions (a) or (b) is met

    (a) Common rail internal pressure is regulated using pressure control valve when either of the following condition is met*2

    - Fuel temperature is below 15°C (59°F)

    - Within a certain period of time after the engine has been started (maximum 300 seconds, regardless of fuel temperature)

    (b) Common rail internal pressure is regulated using both suction control valve (supply pump) and pressure control valve while engine running under light load (including idling) and fuel temperature above 15°C (59°F)

  2. One of the following conditions (a) or (b) is met:

    (a) Although the pressure control valve has sufficiently opened, actual fuel pressure remains higher than target fuel pressure by 25000 kPa or higher for 1 second.

    (b) Actual fuel pressure remains lower than target rail pressure (The actual fuel pressure remains 17000 to 20000 kPa or lower than target fuel pressure for 1 second. Although the pressure control valve has sufficiently closed, afterward the actual fuel pressure still remains low for 1 second.)

  • Suction control valve (supply pump assembly)

  • Open or short in suction control valve (supply pump assembly) circuit

  • Open or short in pressure control valve (common rail assembly) circuit

  • Pressure control valve (common rail assembly)

  • Fuel filter element clogged

  • Fuel leak

  • Injector assembly

  • Lack of fuel

  • Fuel line (air bleeding)

  • ECM

Comes on / -

DTC stored
Tip:

*1: At this time, the suction control valve is sending minimum volume of fuel depending on engine speed, load and fuel pressure, so it can reduce the rise in fuel temperature and reduce engine load.

Fuel pressure control response with suction control valve is not as fast as with the pressure control valve.

*2: At this time, suction control valve sending maximum volume of fuel at that engine speed.

Pressure control valve can reduce common rail pressure quickly during sudden deceleration.

DTC No.

DTC Detection Drive Pattern

P0087

Drive the vehicle when the fuel temperature is 15°C (59°F) or higher.

Tip:

  • Detection of this DTC is suspended during idling or when the accelerator pedal fully is released.

  • Refer to the Freeze Frame Data, in particular Vehicle Speed, Engine Speed, MAF, MAP, Calculate Load, Coolant Temp.

Control mode:

Fuel pressure malfunction when in PCV (Pressure Control Valve) control or SCV (Suction Control Valve) control.

Purpose of Monitoring:

Detect in a high pressure line, injection nozzle stuck in open position, worn high pressure pump, worn injector assembly, leaking pressure control valve.

Possible malfunctions on the low pressure side: Pressure before gear pump too low, gear pump output too low (filter clogged up, leak on low pressure side), supply pump output too low.

DTC No.

DTC Detection Drive Pattern

P0088

Drive the vehicle when the fuel temperature is 15°C (59°F) or higher.

Tip:

  • Detection of this DTC is suspended during idling or when the accelerator pedal fully is released.

  • Refer to the Freeze Frame Data, in particular Vehicle Speed, Engine Speed, MAF, MAP, Calculate Load, Coolant Temp.

Control mode:

Fuel pressure malfunction when in PCV (Pressure Control Valve) control or SCV (Suction Control Valve) control.

Purpose of Monitoring:

Possible malfunctions on the high pressure side: Pressure control valve stuck closed, pressure control valve supplied with power due to electrical error, suction control valve stuck in open position, orifice clogged up, suction control valve without power due to electrical error.

Possible malfunctions on the low pressure side: Pressure before gear pump too high (e.g. supply pump with suction control valve), pressure after orifice too high.

DTC No.

DTC Detection Drive Pattern

P0191

Start the engine, then turn the ignition switch off and wait for 30 seconds or more when fuel temperature is 40°C (104°F) or higher, and then turn the ignition switch to ON.

Tip:

Refer to the Freeze Frame Data, in particular Vehicle Speed, Engine Speed, MAF, MAP, Calculate Load, Coolant Temp.

Purpose of Monitoring:

Detect characteristic malfunction of the fuel pressure sensor, or pressure dropping manner malfunction in the common rail due to pressure control valve failure.

DTC No.

DTC Detection Drive Pattern

P0A0F

Engine cranking when the intake air temperature is 0°C (32°F) or more, and atmospheric pressure is 85 kPa or more.

DTC No.

DTC Detection Drive Pattern

P1229

Drive the vehicle when the fuel temperature is 15°C (59°F) or higher.

Tip:

  • Detection of this DTC is suspended during idling or when the accelerator pedal fully is released.

  • Refer to the Freeze Frame Data, in particular Vehicle Speed, Engine Speed, MAF, MAP, Calculate Load, Coolant Temp.

Control mode:

Fuel pressure malfunction when SCV (Suction Control Valve) control.

Purpose of Monitoring (DTC detection condition 2):

Possible malfunction on the high pressure side: Leakage in a high pressure line, injection nozzle stuck in open position, worn high pressure pump, worn injector assembly, leaking pressure limiting valve.

Possible malfunction on the low pressure side: Pressure before gear pump too low, gear pump output too low (filter clogged up, leak on low pressure side), supply pump output too low.

DTC No.

DTC Detection Drive Pattern

P1272

One of following conditions (1), (2), (3) or (4) is met:

  1. When the fuel temperature is 15°C (59°F) or higher and accelerator pedal fully released.

  2. Engine idling.

  3. All driving conditions when fuel temperature is 10°C (50°F) or less.

  4. Within a certain period of time (maximum 300 seconds) after engine start.

Tip:

Refer to the Freeze Frame Data, in particular Vehicle Speed, Engine Speed, MAF, MAP, Calculate Load, Coolant Temp.

Control mode:

Fuel pressure malfunction when in PCV (Pressure Control Valve) control, or when switching to PCV and SCV cooperative control.

Purpose of Monitoring (DTC detection condition 2-(a)):

Possible malfunction on the high pressure side: Leakage in a high pressure line, injection nozzle stuck in open position, worn high pressure pump, worn injector assembly, leaking pressure limiting or pressure control valve.

Possible malfunction on the low pressure side: Pressure before gear pump too low, gear pump output too low (filter clogged up, leak on low pressure side), supply pump output too low.

Purpose of Monitoring (DTC detection condition 2-(b)):

Pressure control valve stuck, pressure control valve supplied with power due to electrical error.

Possible error in the low pressure stage. Pressure control valve reflux too high.
Table 1. Related Data List

DTC No.

Data List

P0087

P0088

P0191

P0A0F

P1229

P1272

  • Target Common Rail Pressure

  • Common Rail Pressure

  • Target Pump SCV Current

  • Fuel Temperature

  • Engine Speed

  • MAF

  • MAP

  • Vehicle Speed

  • Coolant Temp
Tip:

When the engine is running, the actual common rail internal pressure (Common Rail Pressure) follows the target common rail internal pressure (Target Common Rail Pressure). Under a stable condition such as idling, Common Rail Pressure is within +/-10000 kPa of Target Common Rail Pressure.

Tip:

  • If DTC P0087, P0088, P0191, P0A0F, P1229 or P1272 is stored, the following symptoms may appear.

    - Lack of power or engine stall due to fail-safe operation

  • If the Common Rail Pressure is 175000 kPa or higher.

    - Combustion noise worsens

  • If the Common Rail Pressure is 15000 kPa or less.

    - Difficult to start

  • If the Common Rail Pressure is higher than "Target Common Rail Pressure +20000 kPa".

    - Combustion noise worsens

  • If the Common Rail Pressure is less than "Target Common Rail Pressure -20000 kPa".

    - Difficult to start

    - Poor acceleration

    - Engine stall

WIRING DIAGRAM

Refer to DTC P0001.

Click here

Refer to DTC P0090.

Click here

CAUTION / NOTICE / HINT

Note:

  • When replacing the ECM and/or injector assembly, perform ECM Initialization and Registration.

    Click here

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

Tip:

  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

  • If the value of "Target Pump SCV Current" in the freeze frame data exceeds 1530 mA, the supply pump assembly may have a malfunction.

  • Before starting the inspection procedure, check the following items of freeze frame data carefully for identifying the cause of the malfunction, and in judging whether it was temporary or not.

    • Target Common Rail Pressure

    • Common Rail Pressure

    • Target Pump SCV Current

    • Fuel Temperature

    • Engine Speed

    • MAF

    • MAP

    • Vehicle Speed

    • Coolant Temp

PROCEDURE

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0087, P0088, P0191, P0A0F, P1229 OR P1272)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    4. Record the stored DTCs and Freeze Frame Data.

      Powertrain > Engine and ECT > Trouble Codes

      Result

      Result

      Proceed to

      DTC P0087, P0088, P0191, P1229 or P1272 is output

      A

      P0A0F is output

      B

      DTC P0087, P0088, P0191, P0A0F, P1229 or P1272 and other DTCs are output

      C
      Tip:

      If any DTCs other than P0087, P0088, P0191, P0A0F, P1229 or P1272 are output, troubleshoot those DTCs first.

    B

    BLEED AIR FROM FUEL SYSTEMClick here

    C

    GO TO DTC CHART

    Click hereClick hereClick here

    A

  2. CHECK FUEL RECEIVER GAUGE (AMOUNT OF FUEL)

    1. Check if the fuel level is low.

      Result

      Proceed to

      OK

      NG
    OK

    CLEAR DTCClick here

    NG

  3. ADD FUEL

    Result

    Proceed to

    NEXT
    NEXT

  4. BLEED AIR FROM FUEL SYSTEM

    1. Bleed the air from the fuel system.

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

  5. CHECK WHETHER DTC OUTPUT RECURS (DTC P0087, P0088, P0191, P1229 OR P1272)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch off and wait for 30 seconds.

    5. If DTC P1272 was stored in the result of Step 1, perform the (A) to (C) confirmation driving pattern process. If the result of Step 1 is other than DTC P1272, perform the (D) to (F) confirmation driving pattern process.

    6. Start the engine when the fuel temperature is 15°C (59°F) or less. (A)

    7. Drive the vehicle in 2nd gear. (B)

      CAUTION:

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

    8. Fully depress the accelerator pedal, and then fully release it at an engine speed of 3000 rpm or more. (C)

    9. Allow the engine to idle until the engine coolant temperature reaches 75°C (167°F) or higher. (D)

    10. Drive the vehicle in 2nd gear. (E)

    11. Fully depress the accelerator pedal, and then fully release it at an engine speed of 3000 rpm or more. (F)

    12. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.

    13. Read the pending DTCs.

      Powertrain > Engine and ECT > Trouble Codes

      Tip:

      Take a snapshot under stable conditions such as idling, confirm that Common Rail Pressure is within +/-10000 kPa of Target Common Rail Pressure.

      Result

      Result

      Proceed to

      DTC is not output

      A

      DTC P0087, P0088, P0191, P1229 or P1272 is output

      B
    A

    DTC CAUSED BY RUNNING OUT OF FUEL

    B

  6. CLEAR DTC

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

    Result

    Proceed to

    NEXT
    NEXT

  7. CHECK ENGINE STARTING CONDITION

    OK

    The engine can be started within 4 seconds.

    Note:

    Just after starting the engine, visually check for fuel leaks from the supply pump assembly, injector assemblies, common rail assembly, and fuel pipes in high-pressure areas.

    Result

    Proceed to

    OK

    NG
    OK

    CHECK FREEZE FRAME DATA (TARGET PUMP SCV CURRENT)Click here

    NG

  8. BLEED AIR FROM FUEL SYSTEM

    1. Bleed the air from the fuel system.

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

  9. CHECK ENGINE STARTING CONDITION

    1. Check whether the engine can be started.

      OK

      The engine can be started.

    Result

    Proceed to

    OK

    NG
    OK

    CHECK FREEZE FRAME DATA (TARGET PUMP SCV CURRENT)Click here

    NG

  10. CHECK AND REPLACE FUEL INLET LINE

    1. Check the fuel line from fuel tank to the supply pump, and repair or replace the malfunctioning part if necessary.

      1. Check if the fuel filter is clogged.

      2. Check for fuel freezing in the fuel line when the cold condition.

      3. Check for clogs or leaks in the fuel pipe and hose between the fuel tank and supply pump assembly.

    Result

    Proceed to

    NEXT
    NEXT

  11. CHECK ENGINE STARTING CONDITION

    1. Check whether the engine can be started.

      OK

      The engine can be started.

    Result

    Proceed to

    OK

    NG
    OK

    CHECK FREEZE FRAME DATA (TARGET PUMP SCV CURRENT)Click here

    NG

  12. REPLACE SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)

    1. Replace the supply pump assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  13. BLEED AIR FROM FUEL SYSTEM

    1. Bleed the air from the fuel system.

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

  14. CHECK ENGINE STARTING CONDITION

    1. Check whether the engine can be started.

      OK

      The engine can be started.

    Result

    Proceed to

    OK

    NG
    OK

    CHECK FREEZE FRAME DATA (TARGET PUMP SCV CURRENT)Click here

    NG

  15. REPLACE COMMON RAIL ASSEMBLY (PRESSURE CONTROL VALVE)

    1. Replace the common rail assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  16. BLEED AIR FROM FUEL SYSTEM

    1. Bleed the air from the fuel system.

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

  17. CHECK FREEZE FRAME DATA (TARGET PUMP SCV CURRENT)

    1. Read the value of Target Pump SCV Current in Freeze Frame Data recorded in Step 1.

      Standard

      GTS Display (Freeze Frame Data Item)

      Specified Condition

      Target Pump SCV Current

      Below 1530 mA

    Result

    Proceed to

    OK

    NG
    NG

    CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)Click here

    OK

  18. CHECK FREEZE FRAME DATA (COMMON RAIL PRESSURE)

    1. Read the value of Common Rail Pressure and Target Common Rail Pressure in Freeze Frame Data recorded in Step 1.

      Standard

      GTS Display (Freeze Frame Data Item)

      Specified Condition

      Common Rail Pressure

      Below 195000 kPa

    2. Start the engine and warm it up.

    3. Enter the following menus: Powertrain / Engine and ECT / Data List / Common Rail Pressure and Target Common Rail Pressure.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Target Common Rail Pressure

      Common Rail Pressure

    4. Check that the Common Rail Pressure is within the specification below.

      Standard

      Common Rail Pressure is within +/-10000 kPa of Target Common Rail Pressure when engine is idling.

      Result

      Result

      Proceed to

      Both conditions are met:

      • Common Rail Pressure of Freeze Frame Data is 195000 kPa or higher

      • Common Rail Pressure is within +/-10000 kPa of Target Common Rail Pressure when engine is idling

      B

      Except above

      A
    B

    REPLACE COMMON RAIL ASSEMBLYClick here

    A

  19. CHECK FREEZE FRAME DATA (INJECTION FEEDBACK VAL #1 TO #4)

    Tip:

    Perform the procedure below to identify the malfunctioning cylinder.

    1. Start the engine and allow it to idle until the engine coolant temperature reaches 75°C (167°F) or higher.

    2. Allow the engine to idle for 30 seconds or more.

    3. Connect the GTS to the DLC3.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Injection Feedback Val #1 to #4.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Injection Feedback Val #1

      Injection Feedback Val #2

      Injection Feedback Val #3

      Injection Feedback Val #4

    5. Read the value.

      Standard

      GTS Display (Data List Item)

      Engine Condition

      Specified Condition

      Injection Feedback Val #1

      Injection Feedback Val #2

      Injection Feedback Val #3

      Injection Feedback Val #4

      Idling

      Between -2.0 mm3/st and 2.0 mm3/st

    Result

    Proceed to

    OK

    NG
    NG

    PERFORM ACTIVE TEST USING GTS (FUEL CUT FOR IDENTIFYING MALFUNCTION)Click here

    OK

  20. PERFORM ACTIVE TEST USING GTS (TEST THE FUEL LEAK)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine and ECT/ Active Test / Test the Fuel Leak / Data List / Common Rail Pressure, Target Common Rail Pressure and Target Pump SCV Current.

      Powertrain > Engine and ECT > Active Test

      Active Test Display

      Test the Fuel Leak

      Data List Display

      Target Common Rail Pressure

      Common Rail Pressure

      Target Pump SCV Current

    4. Check the Common Rail Pressure is within +/-10000 kPa of Target Common Rail Pressure when engine is idling and running at 3000 rpm without load.

    5. Take a snapshot with the GTS during the Active Test.

    6. Maintain an engine speed of 3500 rpm, and press the "Start" button.

    7. Measure the difference between the target fuel pressure (Target Common Rail Pressure) and the actual fuel pressure (Common Rail Pressure) when the Active Test / Test the Fuel Leak is performed.

      A285606E03
      Note:

      The EPS, ABS and SRS warning lights may blink when the engine speed exceeds 3500 rpm during this test.

      Tip:

      To ensure accurate measurements, perform the Active Test with measurements 5 times or more.

      Standard

      The difference between the target fuel pressure and the actual fuel pressure is less than 15000 kPa when the target fuel pressure reaches the maximum value approximately 2 seconds after the Active Test starts.

    8. Read the value of Target Pump SCV Current in Data List when the Active Test / Test the Fuel Leak is performed.

      Standard current

      Target Pump SCV Current is less than 1530 mA.

      Tip:

      If the value of Target Pump SCV Current stored in Freeze Frame Data is higher than standard, intermittent sticking of the suction control valve may be the cause of the malfunction.

      Result

      Result

      Proceed to

      Both results are within standard

      A

      Difference between target fuel pressure and actual fuel pressure is 15000 kPa or higher

      B

      Target Pump SCV Current value is out of standard range

      C

      Both conditions are met:

      • Common Rail Pressure is 195000 kPa or higher during Active Test at 3500 rpm

      • Common Rail Pressure is within +/-10000 kPa of Target Common Rail Pressure when engine is idling

      D
    A

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

    C

    CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)Click here

    D

    REPLACE COMMON RAIL ASSEMBLYClick here

    B

  21. REPLACE SUPPLY PUMP ASSEMBLY

    Tip:

    If the supply pump assembly has already been replaced in step 12, proceed to the next step.

    1. Replace the supply pump assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  22. BLEED AIR FROM FUEL SYSTEM

    1. Bleed the air from the fuel system.

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

  23. PERFORM ACTIVE TEST USING GTS (TEST THE FUEL LEAK)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine and ECT/ Active Test / Test the Fuel Leak / Data List / Common Rail Pressure and Target Common Rail Pressure.

      Powertrain > Engine and ECT > Active Test

      Active Test Display

      Test the Fuel Leak

      Data List Display

      Target Common Rail Pressure

      Common Rail Pressure

    4. Take a snapshot with the GTS during the Active Test.

    5. Maintain an engine speed of 3500 rpm, and then press the "Start" button.

    6. Measure the difference between the target fuel pressure (Target Common Rail Pressure) and the actual fuel pressure (Common Rail Pressure) when the Active Test / Test the Fuel Leak is performed.

      A285606E03
      CAUTION:

      The EPS, ABS and SRS warning lights may blink when the engine speed exceeds 3500 rpm during this test.

      Tip:

      To ensure accurate measurements, perform the Active Test with measurements 5 times or more.

      Standard

      The difference between the target fuel pressure and the actual fuel pressure is less than 15000 kPa when the target fuel pressure reaches the maximum value approximately 2 seconds after the Active Test starts.

      Result

      Result

      Proceed to

      Difference between target fuel pressure and actual fuel pressure is 15000 kPa or higher

      A

      Difference between target fuel pressure and actual fuel pressure is less than 15000 kPa

      B
    A

    REPLACE COMMON RAIL ASSEMBLYClick here

    B

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  24. PERFORM ACTIVE TEST USING GTS (FUEL CUT FOR IDENTIFYING MALFUNCTION)

    1. Start the engine and allow it to idle until the engine coolant temperature reaches 75°C (167°F) or higher.

    2. Connect the GTS to the DLC3.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Select Cylinder Fuel Cut.

      Powertrain > Engine and ECT > Active Test

      Tester Display

      Control the Select Cylinder Fuel Cut

    5. Check the four cylinders in sequence to identify a faulty cylinder.

      Tip:

      • DTCs may be output after this Active Test. Make sure to check for DTCs after this Active Test. If any DTCs are output, make sure to clear them.

        Click here

      • If the engine idle speed does not change when a injector is disabled, the cylinder being tested is malfunctioning.

    Result

    Proceed to

    NEXT
    NEXT

  25. REPLACE INJECTOR ASSEMBLY (INJECTOR OF MALFUNCTIONING CYLINDER)

    1. Replace the injector assembly of the malfunctioning cylinder.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  26. PERFORM REGISTRATION AND INITIALIZATION

    1. Perform Registration and Initialization.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  27. BLEED AIR FROM FUEL SYSTEM

    1. Bleed the air from the fuel system.

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  28. REPLACE COMMON RAIL ASSEMBLY

    Tip:

    If the common rail assembly has already been replaced in step 15, proceed to the next step.

    1. Replace the common rail assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  29. BLEED AIR FROM FUEL SYSTEM

    1. Bleed the air from the fuel system.

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  30. CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)

    1. Disconnect the suction control valve 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

      B123-2 - B212-30 (PCV)

      Always

      Below 1 Ω

      B123-2 or B212-30 (PCV) - Body ground and other terminals

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

  31. REPLACE SUPPLY PUMP ASSEMBLY

    Tip:

    If the supply pump assembly has already been replaced in step 12, proceed to the next step.

    1. Replace the supply pump assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  32. BLEED AIR FROM FUEL SYSTEM

    1. Bleed the air from the fuel system.

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  33. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Result

    Proceed to

    NEXT
    NEXT

  34. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch off and wait for 30 seconds.

    5. If DTC P1272 was stored in the result of Step 1, perform the (A) to (C) confirmation driving pattern process. If the result of Step 1 is other than DTC P1272, perform the (D) to (F) confirmation driving pattern process.

    6. Start the engine when the fuel temperature is 15°C (59°F) or less. (A)

    7. Drive the vehicle in 2nd gear. (B)

      CAUTION:

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

    8. Fully depress the accelerator pedal, and then fully release it at an engine speed of 3000 rpm or more. (C)

    9. Allow the engine to idle until the engine coolant temperature reaches 75°C (167°F) or higher. (D)

    10. Drive the vehicle in 2nd gear. (E)

    11. Fully depress the accelerator pedal, and then fully release it at an engine speed of 3000 rpm or more. (F)

    12. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.

    13. Confirm that the pending DTC is not output again.

      Powertrain > Engine and ECT > Trouble Codes

    Result

    Proceed to

    NEXT
    NEXT

    END