DTC Code | DTC Name |
---|---|
P0191 | Fuel Rail Pressure Sensor Circuit Range / Performance |
DESCRIPTION
Refer to DTC P0087.
Click hereНажмите здесь
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
---|---|---|---|---|---|
P0191 | Fuel Rail Pressure Sensor Circuit Range / Performance | The difference between the main and sub voltage outputs of the fuel pressure sensor is 0.04 V or less, or 1.06 V or higher for 1 second or more (1 trip detection logic). |
|
Comes on | DTC stored |
DTC No. | Data List |
---|---|
P0191 |
|
CONFIRMATION DRIVING PATTERN
DTC No. | DTC Detection Drive Pattern |
---|---|
P0191 | Idling for 1 second |
CAUTION / NOTICE / HINT
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click hereНажмите здесь).
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.
PROCEDURE
READ VALUE USING GTS (FUEL PRESS AND TARGET COMMON RAIL PRESSURE)
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Press and Target Common Rail Pressure.
Powertrain > Engine and ECT > Data ListTester Display |
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Target Common Rail Pressure |
Fuel Press |
Start the engine.
Check the change in the values for the Data List items above when increasing the engine speed from idling to 3000 rpm with no load.
Result | ||||||
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When in a stable condition such as when idling after warm up the engine, "Fuel Press" is +/-5000 kPa of "Target Common Rail Pressure".
B | Нажмите здесь |
GO TO STEP 4 |
A |
CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR - ECM)
Click hereНажмите здесь
Result | |||
---|---|---|---|
|
OK | Нажмите здесь |
GO TO STEP 5 |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR
Repair or replace the harness or connector.
Result | ||
---|---|---|
|
NEXT |
CHECK WHETHER DTC OUTPUT RECURS (DTC P0191)
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCsLet the engine idle for 1 second.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
Powertrain > Engine and ECT > Trouble CodesResult | ||||||
---|---|---|---|---|---|---|
|
B |
END |
A |
REPLACE COMMON RAIL ASSEMBLY
Replace the common rail assembly.
Click hereНажмите здесь
Result | ||
---|---|---|
|
NEXT |
BLEED AIR FROM FUEL SYSTEM
Bleed the air from the fuel system.
Click hereНажмите здесь
Result | ||
---|---|---|
|
NEXT |
CHECK WHETHER DTC OUTPUT RECURS (DTC P0191)
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCsLet the engine idle for 1 second.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
Powertrain > Engine and ECT > Trouble CodesResult | ||||||
---|---|---|---|---|---|---|
|
B |
END |
A |
REPLACE ECM
Replace the ECM.
Click hereНажмите здесь
Result | ||
---|---|---|
|
NEXT |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCsLet the engine idle for 1 second.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Confirm that the DTC is not output.
Powertrain > Engine and ECT > Trouble CodesResult | ||
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|
NEXT |
END |