ECD SYSTEM(w/o DPF), Diagnostic DTC:P0087, P0088, P0191, P1229, 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
P1229	Fuel Pump System
P1272	Fuel Pressure Regulator System Malfunction

DESCRIPTION

With a cold engine, the internal pressure of the common rail is regulated by the pressure control valve. With a warm engine, it is regulated by the suction control valve. When the engine is running with light load, it is regulated by both the pressure control valve and the suction control valve of the supply pump.

Based on signals from the ECM, the pressure control valve opens when sudden deceleration occurs to prevent the fuel pressure from becoming too high.

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

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

Tech Tips

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

P0087
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Drive the vehicle when fuel temperature is 15°C (59°F) or more. Tech Tips Detection of this DTC intermitted during idling or accelerator pedal fully released. Please refer to the Freeze Frame Data, in particular Vehicle Speed, Engine Speed, MAF, MAP, Calculate Load, Coolant Temp.	Common rail internal pressure is less than 12000 to 15000 kPa (varies with engine speed) for 0.3 seconds. (1 trip detection condition).	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
Control mode: Fuel pressure malfunction when in PCV (Pressure Control Valve) control or SCV (Suction Control Valve) control.
Purpose of Monitoring: Leakage in the high pressure range, injection nozzle stuck in open position, worn high pressure pump, worn injector assembly, leaking pressure control valve. Possible errors in the low pressure stage: Pressure before gear pump too low, gear pump output too low (filter clogged up, leak on low pressure side), supply pump output too low.

P0088
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Drive the vehicle when fuel temperature is 15°C (59°F) or more. Tech Tips Detection of this DTC intermitted during idling or accelerator pedal fully released. Please refer to the Freeze Frame Data, in particular Vehicle Speed, Engine Speed, MAF, MAP, Calculate Load, Coolant Temp.	Common rail internal pressure is 175000 kPa or more for 0.3 to 1.0 seconds. (1 trip detection condition).	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
Control mode: Fuel pressure malfunction when in PCV (Pressure Control Valve) control or SCV (Suction Control Valve) control.
Purpose of Monitoring: 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 errors in the low pressure stage: Pressure before gear pump too great (e.g. supply pump with pressure control valve), pressure after orifice too high.

P0191
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
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 more, and then turn the ignition switch to ON. Tech Tips Please refer to the Freeze Frame Data, in particular Vehicle Speed, Engine Speed, MAF, MAP, Calculate Load, Coolant Temp.	After certain period of time has elapsed after engine stop (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 condition).	Common rail assembly ECM Wire harness
Purpose of Monitoring: Characteristic malfunction of the fuel pressure sensor, or pressure dropping manner malfunction in the common rail due to pressure control valve failure.

P1229
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Drive the vehicle when fuel temperature is 15°C (59°F) or more. Tech Tips Detection of this DTC intermitted during idling or accelerator pedal fully released. Please refer to the Freeze Frame Data, in particular Vehicle Speed, Engine Speed, MAF, MAP, Calculate Load, Coolant Temp.	Both of following conditions 1 and 2 are met (1 trip detection condition). 1. Common rail internal pressure is regulated using suction control valve (supply pump) while all of following conditions are met.* - Fuel temperature is above 15°C (59°F). - After certain period of time (maximum 300 seconds) has elapsed after engine start. - Medium or heavy load condition. Tech Tips *: At this time, suction control valve sending minimum volume of fuel depending on engine speed, load and fuel pressure, so it can reduce fuel temperature rising and reduce engine load. Fuel pressure control response with suction control valve is not as fast as pressure control valve. 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) Pressure control valve (common rail assembly) Fuel filter element clogged Fuel leak Injector assembly Lack of fuel Fuel line (air bleeding) ECM
Control mode: Fuel pressure malfunction when SCV (Suction Control Valve) control.
Purpose of Monitoring (DTC detection condition 2): Leakage in the high pressure range, injection nozzle stuck in open position, worn high pressure pump, worn injector assembly, leaking pressure limiting valve. Possible error in the low pressure stage. Pressure before gear pump too low, gear pump output too low (filter clogged up, leak on low pressure side), supply pump output too low.

P1272
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
One of following conditions (a), (b), (c) or (d) is met: (a) When the fuel temperature is 15°C (59°F) or more and accelerator pedal fully released. (b) Engine idling (c) All driving condition when fuel temperature is 10°C (50°F) or less. (d) Within certain period of time (maximum 300 seconds) after engine start. Tech Tips Please refer to the Freeze Frame Data, in particular Vehicle Speed, Engine Speed, MAF, MAP, Calculate Load, Coolant Temp.	Both of the following conditions 1 and 2 are met (1 trip detection logic). 1. Either of following conditions (1) or (2) is met (1) Common rail internal pressure is regulated using pressure control valve under one of the following condition is met* - Fuel temperature is below 15°C (59°F) - Within certain period of time after engine start (maximum 300 seconds, regardless of fuel temperature) (2) Common rail internal pressure is regulated using both suction control valve (supply pump) and pressure control valve while engine running with light load (including idling) and fuel temperature above 15°C (59°F) Tech Tips *: 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. 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 more 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
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)): Leakage in the high pressure range, injection nozzle stuck in open position, worn high pressure pump, worn injector assembly, leaking pressure limiting or pressure control valve. Possible error in the low pressure stage. 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.

Related Data List
DTC No.	Data List
P0087 P0088 P0191 P1229 P1272	Target Common Rail Pressure Fuel Press Target Pump SCV Current Fuel Temperature Engine Speed MAF MAP Vehicle Speed Coolant Temp.

Tech Tips

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

Tech Tips

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

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

If the Fuel Press is 175000 kPa or more.

Combustion noise worsens

If the Fuel Press is 15000 kPa or less.

Difficult to start

If the Fuel Press is more than "Target Common Rail Pressure +20000 kPa".

Combustion noise worsens

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

Difficult to start
Poor acceleration
Engine stall

WIRING DIAGRAM

Refer to DTC P0090 Click here

Refer to DTC P1228 Click here

CAUTION / NOTICE / HINT

Note

When replacing the ECM and/or injector assembly, the ECM needs Registration and Initialization Click here.
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips

When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.
Read freeze frame data using the intelligent tester. 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
Fuel Press
Target Pump SCV Current
Fuel Temperature
Engine Speed
MAF
MAP
Vehicle Speed
Coolant Temp.

PROCEDURE

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

Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Enter the following menus: Powertrain / Engine and ECT / DTC.

Record the stored DTCs and Freeze Frame Data.

Result
Result	Proceed to
DTC P0087, P0088, P0191, P1229 or P1272	A
DTC P0087, P0088, P0191, P1229 or P1272 and other DTCs	B

Tech Tips

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

GO TO DTC CHART Click here

CHECK FUEL RECEIVER GAUGE (AMOUNT OF FUEL)

Check if the fuel level is low.

Result
Result	Proceed to
Low fuel level warning light blinks	A
Low fuel level warning light does not blink	B

CLEAR DTC Click here

ADD FUEL

NEXT
BLEED AIR FROM FUEL SYSTEM
1. Bleed air from fuel system Click here.
NEXT

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

Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Clear the DTCs Click here.
Turn the ignition switch off and wait for 30 seconds.
If the DTC P1272 is 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.
Start the engine when the fuel temperature is 15°C (59°F) or less. (A)
Drive the vehicle in 2nd gear. (B)

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.
Fully depress the accelerator pedal, and then fully release it from engine speed of 3000 rpm or more. (C)
Allow the engine to idle until the engine coolant temperature reaches 75°C (167°F) or more. (D)
Drive the vehicle in 2nd gear. (E)
Fully depress the accelerator pedal, and then fully release it from engine speed of 3000 rpm or more. (F)
Enter the following menus: Powertrain / Engine and ECT / DTC.

Read the DTCs.

Tech Tips

Take a snapshot under a stable condition such as idling, confirm that Fuel Press is within +/-10000 kPa of Target Common Rail Pressure.
Perform the following procedure using the tester to determine whether or not the DTC judgment has been carried out.

Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
Input DTC P0087, P0088, P0191, P1229 or P1272.

Check that STATUS is NORMAL. If STATUS is INCOMPLETE or N/A, repeat the confirmation driving pattern process.

Result
Result	Proceed to
NORMAL	A
ABNORMAL	B

DTC CAUSED BY RUNNING OUT OF FUEL

CLEAR DTC
1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to ON and turn the tester on.
3. Clear the DTCs Click here.
NEXT
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, the injector assemblies, the common rail assembly, and the fuel pipes in high-pressure areas.

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

NG
BLEED AIR FROM FUEL SYSTEM
1. Bleed air from fuel system Click here.
NEXT
CHECK ENGINE STARTING CONDITION
1. Check whether the engine can be started.
  
  OK
  
  The engine can be started.
OK
CHECK FREEZE FRAME DATA (TARGET PUMP SCV CURRENT) Click here

NG
CHECK AND REPLACE FUEL INLET LINE
1. Check the following items (fuel line from fuel tank to supply pump), and repair or replace the malfunctioning part if necessary.
  1. Check for fuel filter clogging.
  2. Check for fuel freezing in the fuel line when the cold condition.
  3. Check for clogging or leaks in the fuel pipe and hose between the fuel tank and supply pump assembly.
NEXT
CHECK ENGINE STARTING CONDITION
1. Check whether the engine can be started.
  
  OK
  
  The engine can be started.
OK
CHECK FREEZE FRAME DATA (TARGET PUMP SCV CURRENT) Click here

NG
REPLACE SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)
1. Replace the supply pump assembly Click here.
NEXT
BLEED AIR FROM FUEL SYSTEM
1. Bleed air from fuel system Click here.
NEXT
CHECK ENGINE STARTING CONDITION
1. Check whether the engine can be started.
  
  OK
  
  The engine can be started.
OK
CHECK FREEZE FRAME DATA (TARGET PUMP SCV CURRENT) Click here

NG
REPLACE COMMON RAIL ASSEMBLY (PRESSURE CONTROL VALVE)
1. Replace the common rail assembly Click here.
NEXT
BLEED AIR FROM FUEL SYSTEM
1. Bleed air from fuel system Click here.
NEXT

OK
The engine can be started within 4 seconds.

OK
The engine can be started.

OK
The engine can be started.

OK
The engine can be started.

CHECK FREEZE FRAME DATA (TARGET PUMP SCV CURRENT)

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

Standard Current

Tester Display (Freeze Frame Data Item)	Specified Condition
Target Pump SCV Current	Below 1530 mA

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

CHECK FREEZE FRAME DATA (FUEL PRESS)

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

Standard

Tester Display (Freeze Frame Data Item)	Specified Condition
Fuel Press	Below 175000 kPa

Start the engine and warm it up.
Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Press and Target Common Rail Pressure.

Check that the Fuel Press is within the specification below.

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

Result
Result	Proceed to
Both conditions are met: Fuel Press of Freeze Frame Data is 175000 kPa or more Fuel Press is within +/-10000 kPa of Target Common Rail Pressure when engine is idling	B
Except above	A

REPLACE COMMON RAIL ASSEMBLY Click here

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

Tech Tips

Perform the procedures below to identify the malfunctioning cylinder.

Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more.
Allow the engine to idle for 30 seconds or more.
Connect the intelligent tester to the DLC3.
Enter the following menus: Powertrain / Engine and ECT / Data List / Injection Feedback Val #1 to #4.

Read the value.

Standard

Tester 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

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

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TEST THE FUEL LEAK)

Text in Illustration

*1 Snapshot Button

*a Reference

Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Enter the following menus: Powertrain / Engine and ECT/ Active Test / Test the Fuel Leak / Data List / Fuel Press, Target Common Rail Pressure and Target Pump SCV Current.
Check the Fuel Press is within +/-10000 kPa of Target Common Rail Pressure when engine is idling and running at 3000 rpm without load.
Take a snapshot with the tester during the Active Test.

Tech Tips

Detailed graphs can be displayed by transferring the stored snapshot from the tester to a PC (personal computer) with Intelligent Viewer installed.
Maintain the engine speed of 3500 rpm, and then press the "Start" button.

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

Note

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

Tech Tips

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.

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.

Tech Tips

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 more	B
Target Pump SCV Current value is out of standard range	C
Both conditions are met: Fuel Press is 175000 kPa or more during Active Test at 3500 rpm Fuel Press is within +/-10000 kPa of Target Common Rail Pressure when engine is idling	D

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

REPLACE SUPPLY PUMP ASSEMBLY Click here

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

REPLACE COMMON RAIL ASSEMBLY Click here

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FUEL CUT FOR IDENTIFYING MALFUNCTION)
1. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more.
2. Connect the intelligent tester to the DLC3.
3. Turn the tester on.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Cylinder#1 to #4 Fuel Cut.
5. Check the four cylinders in sequence to identify a faulty cylinder.
  Tech Tips
  - 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 idling remains normal despite cutting off the fuel injection, the cylinder is malfunctioning.
NEXT
REPLACE INJECTOR ASSEMBLY (INJECTOR OF MALFUNCTIONING CYLINDER)
1. Replace the injector assembly of the malfunctioning cylinder Click here.
NEXT
PERFORM REGISTRATION AND INITIALIZATION
1. Perform registration and initialization Click here.
NEXT
BLEED AIR FROM FUEL SYSTEM
1. Bleed air from fuel system Click here.
NEXT
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here
REPLACE SUPPLY PUMP ASSEMBLY

Tech Tips

If the supply pump assembly has already been replaced in step 12, proceed to next step.
1. Replace the supply pump assembly Click here.
NEXT
BLEED AIR FROM FUEL SYSTEM
1. Bleed air from fuel system Click here.
NEXT

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TEST THE FUEL LEAK)

Text in Illustration

*1 Snapshot Button

*a Reference

Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Enter the following menus: Powertrain / Engine and ECT/ Active Test / Test the Fuel Leak / Data List / Fuel Press and Target Common Rail Pressure.
Take a snapshot with the tester during the Active Test.

Tech Tips

Detailed graphs can be displayed by transferring the stored snapshot from the tester to a PC (personal computer) with Intelligent Viewer installed.
Maintain the engine speed of 3500 rpm, and then press the "Start" button.

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

CAUTION:

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

Tech Tips

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

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

REPLACE COMMON RAIL ASSEMBLY

Tech Tips

If the common rail assembly has already been replaced in step 15, proceed to next step.
1. Replace the common rail assembly Click here.
NEXT
BLEED AIR FROM FUEL SYSTEM
1. Bleed air from fuel system Click here.
NEXT
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)

Disconnect the suction control valve connector.
Disconnect the ECM connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
B67-2 - B21-12 (PCV)	Always	Below 1 Ω
B67-2 or B21-12 (PCV) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

REPLACE SUPPLY PUMP ASSEMBLY

Tech Tips

If the supply pump assembly has already been replaced in step 12, proceed to next step.
1. Replace the supply pump assembly Click here.
NEXT
BLEED AIR FROM FUEL SYSTEM
1. Bleed air from fuel system Click here.
NEXT
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here
REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to ON and turn the tester on.
3. Clear the DTCs Click here.
4. Turn the ignition switch off and wait for 30 seconds.
5. If the DTC P1272 is 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 from 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 more. (D)
10. Drive the vehicle in 2nd gear. (E)
11. Fully depress the accelerator pedal, and then fully release it from engine speed of 3000 rpm or more. (F)
12. Enter the following menus: Powertrain / Engine and ECT / DTC.
13. Confirm that the DTC is not output again.
  
  Tech Tips
  
  Perform the following procedure using the tester to determine whether or not the DTC judgment has been carried out.
  1. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  2. Input DTC P0087, P0088, P0191, P1229 or P1272.
  3. Check that STATUS is NORMAL. If STATUS is INCOMPLETE or N/A, repeat the confirmation driving pattern process.
NEXT
END