Lexus ES: Fuel Rail Pressure Sensor (Low) Signal Stuck in Range (P107A2A,P107A64)
DESCRIPTION
Refer to DTC P107A11.
Click here .gif)
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P107A2A | Fuel Rail Pressure Sensor (Low) Signal Stuck in Range | When target low pressure side fuel pressure changes, the change in fuel pressure sensor value is abnormal (2 trip detection logic). |
| Comes on | DTC stored | SAE Code: P107B |
| P107A64 | Fuel Rail Pressure Sensor (Low) Signal Plausibility Failure | When the fuel pump on the low pressure side is operated at the maximum during a fuel cut, the low pressure side fuel pressure is higher or lower than threshold (2 trip detection logic). |
| Comes on | DTC stored | SAE Code: P107B |
MONITOR DESCRIPTION
Fuel Pressure Sensor Stuck MonitorIf the fuel pressure sensor (for low pressure side) value does not follow the change in the target low pressure side fuel pressure, it is judged as a malfunction. If this malfunction is detected in 2 consecutive driving cycles, the ECM will illuminate the MIL and store DTC P107A2A.
Fuel Pressure Sensor Correlation Monitor (Fuel Cut)If the fuel pressure sensor (for low pressure side) value is less than or higher than the threshold value when the fuel pump on the low pressure side is operated at the maximum during a fuel cut, it is judged as a malfunction has occurred. If this malfunction is detected for 2 consecutive driving cycles, the ECM will illuminate the MIL and store DTC P107A64.
MONITOR STRATEGY
| Related DTCs | P107B: Fuel pressure sensor rationality (stuck monitor) P107B: Fuel pressure sensor rationality (correlation monitor (fuel cut)) |
| Required Sensors/Components (Main) | Fuel pressure sensor (for low pressure side) |
| Required Sensors/Components (Related) | Atmospheric pressure sensor (ECM) |
| Frequency of Operation | Continuous: Stuck monitor Once per driving cycle: Correlation monitor |
| Duration | Less than 30 seconds: Stuck monitor Less than 10 seconds: Correlation monitor (fuel cut) |
| MIL Operation | 2 driving cycles |
| Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
Stuck Monitor| All of the following conditions are met | 5 seconds or more |
| Engine coolant temperature sensor malfunction (P0116, P0117, P0118) | Not detected |
| Intake air temperature sensor (mass air flow meter sub-assembly) malfunction (P0111, P0112, P0113) | Not detected |
| Fuel pressure sensor (for low pressure side) circuit malfunction (P107C, P107D) | Not detected |
| Battery voltage | 11 V or higher |
| Fuel cut | Off |
| All of the following conditions are met | - |
| Engine coolant temperature sensor malfunction (P0116, P0117, P0118) | Not detected |
| Intake air temperature sensor (mass air flow meter sub-assembly) malfunction (P0111, P0112, P0113) | Not detected |
| Fuel pressure sensor (for low pressure side) circuit malfunction (P107C, P107D) | Not detected |
| Battery voltage | 11 V or higher |
| Engine coolant temperature | 75°C (167°F) or higher |
| Intake air temperature | -10°C (14°F) or higher |
| Atmospheric pressure | 76 kPa(abs) [11 psi(abs)] or higher |
| Fuel cut | On |
| Fuel pump operation at maximum duty | 1 second or more |
TYPICAL MALFUNCTION THRESHOLDS
Stuck Monitor| Malfunction counter | 5 times or more |
| Malfunction counter is incremented when following conditions is met | - |
| Fuel pressure sensor (for low pressure side) output deviation | Less than 12 kPa (0.1 kgf/cm2, 1.7 psi) |
| Malfunction counter | 2 seconds or more |
| Malfunction counter is counted when following condition is met | - |
| Fuel pressure sensor (for low pressure side) output | Higher than 770 kPa (7.9 kgf/cm2, 112 psi), or less than 540 kPa (5.5 kgf/cm2, 78.3 psi) |
CONFIRMATION DRIVING PATTERN
HINT:
-
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the engine switch off and wait for at least 30 seconds.
- Turn the engine switch on (IG) [A].
- Turn the Techstream on.
- Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
-
Drive the vehicle at 50 to 80 km/h (31 to 50 mph) for 15 minutes or more [C].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
Drive the vehicle while keeping the engine load as constant as possible.
- Enter the following menus: Powertrain / Engine / Trouble Codes [D].
-
Read the pending DTCs.
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Input the DTC: P107A2A.
-
Check the DTC judgment result.
Techstream Display
Description
NORMAL
- DTC judgment completed
- System normal
ABNORMAL
- DTC judgment completed
- System abnormal
INCOMPLETE
- DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE, perform steps [C] and [D] again.
-
[A] to [D]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the engine switch off and wait for at least 30 seconds.
- Turn the engine switch on (IG) [A].
- Turn the Techstream on.
- Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
-
Drive the vehicle at approximately 80 km/h (50 mph) for 10 seconds or more, and then decelerate the vehicle by releasing the accelerator pedal for 10 seconds or more to perform the fuel-cut [C].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
- Enter the following menus: Powertrain / Engine / Trouble Codes [D].
-
Read the pending DTCs.
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Input the DTC: P107A64.
-
Check the DTC judgment result.
Techstream Display
Description
NORMAL
- DTC judgment completed
- System normal
ABNORMAL
- DTC judgment completed
- System abnormal
INCOMPLETE
- DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE, perform steps [C] and [D] again.
-
[A] to [D]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
WIRING DIAGRAM
Refer to DTC P107A11.
Click here
CAUTION / NOTICE / HINT
HINT:
Read freeze frame data using the Techstream. 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 P107A2A, P107A64, P008A00 OR P008B00) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read the DTCs and record the Freeze Frame Data.
Powertrain > Engine > Trouble Codes| Result | Proceed to |
|---|---|
| DTC P107A2A is output | A |
| DTC P107A64 is output | B |
| DTC P107A2A or P107A64 and P008A00 are output | C |
| DTC P107A2A or P107A64 and P008B00 are output | D |
| DTC P107A2A, P107A64, P008A00 and/or P008B00 and other DTCs are output | E |
HINT:
If any DTCs other than P107A2A, P107A64, P008A00 and/or P008B00 are output, troubleshoot those DTCs first.
| B | .gif) | GO TO STEP 6 |
| C | | GO TO STEP 7 |
| D | | GO TO STEP 16 |
| E | | GO TO DTC CHART |
|
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| 2. | READ VALUE USING TECHSTREAM (FUEL PRESSURE (LOW) / FUEL PRESSURE 2) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Data List| Tester Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(e) Start the engine.
(f) Record the Fuel Pressure (Low) / Fuel Pressure 2 value.
(g) Turn the engine switch off.
(h) Discharge the fuel pressure.
HINT:
DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.
(1) Remove the EFI-MAIN NO. 2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.
(2) Start the engine.
(3) After the engine has stopped on its own, turn the engine switch off.
HINT:
If the engine does not stop naturally, perform direct injection by racing the engine to reduce the fuel pressure [Fuel Pressure (High)] and stop the engine.
(4) Crank the engine again and make sure that the engine does not start.
(5) Install the EFI-MAIN NO. 2 fuse.
(i) Turn the engine switch on (IG).
(j) Turn the Techstream on.
(k) Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Data List| Tester Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(l) Compare the Fuel Pressure (Low) / Fuel Pressure 2 value recorded with the engine running to the Fuel Pressure (Low) / Fuel Pressure 2 value currently shown on the Techstream.
| Result | Proceed to |
|---|---|
| Fuel Pressure (Low) / Fuel Pressure 2 value drops | A |
| Fuel Pressure (Low) / Fuel Pressure 2 value does not fluctuate | B |
HINT:
Perform "Inspection After Repair" after replacing the fuel pressure sensor (for low pressure side).
Click here
| B | | REPLACE FUEL DELIVERY PIPE RH (FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE)) |
|
| 3. | CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTC.
Powertrain > Engine > Clear DTCs(e) Turn the engine switch off and wait for at least 30 seconds.
|
| 4. | CHECK WHETHER DTC OUTPUT RECURS (DTC P107A2A OR P107A64) |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Powertrain > Engine > Utility| Tester Display |
|---|
| All Readiness |
(c) Input the DTC: P107A2A or P107A64.
(d) Check the DTC judgment result.
| Result | Proceed to |
|---|---|
| NORMAL (DTCs are not output) | A |
| ABNORMAL (DTC P107A2A or P107A64 is output) | B |
| A | | CHECK FOR INTERMITTENT PROBLEMS |
|
| 5. | PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP DUTY RATIO) |
(a) Install the fuel pressure gauge (for low pressure line of low pressure side).
Click here
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty Ratio / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Active Test| Active Test Display |
|---|
| Control the Fuel Pump Duty Ratio |
| Data List Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(f) Compare the values in the Data List using the Techstream and the fuel pressure gauge when the Active Test was performed.
Standard:
| Techstream Operation | Standard |
|---|---|
| Low | Data List value and fuel pressure gauge are within +/-50 kPa of each other |
| High |
HINT:
Perform "Inspection After Repair" after replacing the fuel pressure sensor (for low pressure side).
Click here
| OK | | REPLACE ECM |
| NG | | REPLACE FUEL DELIVERY PIPE RH (FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE)) |
| 6. | READ FREEZE FRAME DATA (FUEL PRESSURE (LOW) / FUEL PRESSURE 2) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Read the Freeze Frame Data value from step 1.
| Result | Proceed to |
|---|---|
| Fuel Pressure (Low) / Fuel Pressure 2 value is 770 kPag or higher | A |
| Fuel Pressure (Low) / Fuel Pressure 2 value is 540 kPag or less | B |
| A | | GO TO STEP 16 |
| B | | GO TO STEP 7 |
| 7. | CHECK FUEL LEAK |
(a) Check around and beneath the vehicle for fuel leaks, fumes, etc.
OK:
No fuel leaks present.
| NG | | REPAIR OR REPLACE FUEL LEAK POINT |
|
| 8. | PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP DUTY RATIO) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty Ratio.
Powertrain > Engine > Active Test| Tester Display |
|---|
| Control the Fuel Pump Duty Ratio |
(e) Check whether the fuel pump operating sound occurs when performing the Active Test on the Techstream.
Standard:
| Techstream Operation | Standard |
|---|---|
| High | Operating sounds can be heard from fuel pump (for low pressure side) |
| NG | | GO TO FUEL PUMP CONTROL CIRCUIT |
|
| 9. | PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP DUTY RATIO) |
(a) Discharge the fuel pressure.
HINT:
DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.
(1) Remove the EFI-MAIN NO. 2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.
(2) Start the engine.
(3) After the engine has stopped on its own, turn the engine switch off.
(4) Crank the engine again and make sure that the engine does not start.
(5) Install the EFI-MAIN NO. 2 fuse.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty Ratio / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Active Test| Active Test Display |
|---|
| Control the Fuel Pump Duty Ratio |
| Data List Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(f) Read the value displayed on the Techstream when the Active Test was performed.
Standard:
| Techstream Operation | Standard |
|---|---|
| Low to High | When switching from Low to High, Fuel Pressure (Low) / Fuel Pressure 2 value changes |
HINT:
Once the fuel pressure becomes high, the fuel pressure will not decrease, even when switched from High to Low. Therefore, make sure that the fuel pressure is low before checking that the fuel pressure changes when switching from Low to High.
| NG | | GO TO STEP 15 |
|
| 10. | PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP DUTY RATIO) |
(a) Discharge the fuel pressure.
HINT:
DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.
(1) Remove the EFI-MAIN NO. 2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.
(2) Start the engine.
(3) After the engine has stopped on its own, turn the engine switch off.
HINT:
If the engine does not stop naturally, perform direct injection by racing the engine to reduce the fuel pressure [Fuel Pressure (High)] and stop the engine.
(4) Crank the engine again and make sure that the engine does not start.
(5) Install the EFI-MAIN NO. 2 fuse.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty Ratio / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Active Test| Active Test Display |
|---|
| Control the Fuel Pump Duty Ratio |
| Data List Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(f) Read the value displayed on the Techstream when the Active Test was performed.
Standard:
| Techstream Operation | Fuel Pressure (Low) / Fuel Pressure 2 |
|---|---|
| Low | 50 kPag or higher |
| High | 420 kPag or higher |
HINT:
Once the fuel pressure becomes high, the fuel pressure will not decrease, even when switched from High to Low. Therefore, make sure that the fuel pressure is low before checking that the fuel pressure changes when switching from Low to High.
OK:
Actual Low and High values are as shown above.
| NG | | GO TO STEP 14 |
|
| 11. | PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP DUTY RATIO) |
(a) Install the fuel pressure gauge (for low pressure line of low pressure side).
Click here
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty Ratio / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Active Test| Active Test Display |
|---|
| Control the Fuel Pump Duty Ratio |
| Data List Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(f) Compare the values in the Data List using the Techstream and the fuel pressure gauge when the Active Test was performed.
Standard:
| Techstream Operation | Standard |
|---|---|
| Low | Data List value and fuel pressure gauge are within +/-50 kPa of each other |
| High |
HINT:
Perform "Inspection After Repair" after replacing the fuel pressure sensor (for low pressure side).
Click here
| NG | | REPLACE FUEL DELIVERY PIPE RH (FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE)) |
|
| 12. | CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTC.
Powertrain > Engine > Clear DTCs(e) Turn the engine switch off and wait for at least 30 seconds.
|
| 13. | CHECK WHETHER DTC OUTPUT RECURS (DTC P107A2A OR P107A64) |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Powertrain > Engine > Utility| Tester Display |
|---|
| All Readiness |
(c) Input the DTC: P107A2A or P107A64.
(d) Check the DTC judgment result.
| Result | Proceed to |
|---|---|
| NORMAL (DTCs are not output) | A |
| ABNORMAL (DTC P107A2A or P107A64 is output) | B |
| A | | CHECK FOR INTERMITTENT PROBLEMS |
| B | | REPLACE ECM |
| 14. | READ VALUE USING TECHSTREAM (FUEL PRESSURE (LOW) / FUEL PRESSURE 2) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Start the engine.
(e) Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Data List| Tester Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(f) Record the Fuel Pressure (Low) / Fuel Pressure 2 value.
(g) Turn the engine switch off.
(h) Wait for 10 seconds.
(i) Turn the engine switch on (IG).
(j) Turn the Techstream on.
(k) Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Data List| Tester Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(l) Compare the Fuel Pressure (Low) / Fuel Pressure 2 value recorded with the engine running to the Fuel Pressure (Low) / Fuel Pressure 2 value currently shown on the Techstream.
| Result | Proceed to |
|---|---|
| Fuel Pressure (Low) / Fuel Pressure 2 value is maintained | A |
| Fuel Pressure (Low) / Fuel Pressure 2 value drops | B |
HINT:
Perform "Inspection After Repair" after replacing the fuel pump (for low pressure side).
Click here
| A | | REPLACE FUEL PUMP (FOR LOW PRESSURE SIDE) |
| B | | REPLACE FUEL MAIN VALVE ASSEMBLY (FOR HIGH PRESSURE) |
| 15. | PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP DUTY RATIO) |
(a) Install the fuel pressure gauge (for low pressure line of low pressure side).
Click here
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty Ratio / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Active Test| Active Test Display |
|---|
| Control the Fuel Pump Duty Ratio |
| Data List Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(f) Read the values in the Data List using the Techstream and the fuel pressure gauge when the Active Test was performed.
| Techstream Operation | Result | Proceed to |
|---|---|---|
| Low to High | Data List value does not change, but fuel pressure gauge changes | A |
| Data List value and fuel pressure gauge do not change | B |
HINT:
Perform "Inspection After Repair" after replacing the fuel pressure sensor (for low pressure side).
Click here
| A | | REPLACE FUEL DELIVERY PIPE RH (FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE)) |
| B | | REPLACE FUEL PUMP CONTROL ECU |
| 16. | READ VALUE USING TECHSTREAM (FUEL PRESSURE (LOW) / FUEL PRESSURE 2) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Start the engine.
(e) Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Data List| Tester Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(f) Record the Fuel Pressure (Low) / Fuel Pressure 2 value.
(g) Turn the engine switch off.
(h) Discharge the fuel pressure.
HINT:
DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream.
(1) Remove the EFI-MAIN NO. 2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.
(2) Start the engine.
(3) After the engine has stopped on its own, turn the engine switch off.
HINT:
If the engine does not stop naturally, perform direct injection by racing the engine to reduce the fuel pressure [Fuel Pressure (High)] and stop the engine.
(4) Crank the engine again and make sure that the engine does not start.
(5) Install the EFI-MAIN NO. 2 fuse.
(i) Turn the engine switch on (IG).
(j) Turn the Techstream on.
(k) Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Data List| Tester Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(l) Compare the Fuel Pressure (Low) / Fuel Pressure 2 value recorded with the engine running to the Fuel Pressure (Low) / Fuel Pressure 2 value currently shown on the Techstream.
| Result | Proceed to |
|---|---|
| Fuel Pressure (Low) / Fuel Pressure 2 value drops | A |
| Fuel Pressure (Low) / Fuel Pressure 2 value is maintained | B |
HINT:
Perform "Inspection After Repair" after replacing the fuel pressure sensor (for low pressure side).
Click here
| B | | REPLACE FUEL DELIVERY PIPE RH (FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE)) |
|
| 17. | PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP DUTY RATIO) |
(a) Install the fuel pressure gauge (for low pressure line of low pressure side).
Click here
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty Ratio / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Active Test| Active Test Display |
|---|
| Control the Fuel Pump Duty Ratio |
| Data List Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(f) Compare the values in the Data List using the Techstream and the fuel pressure gauge when the Active Test was performed.
Standard:
| Techstream Operation | Standard |
|---|---|
| Low | Data List value and fuel pressure gauge are within +/-50 kPa of each other |
| High |
HINT:
Perform "Inspection After Repair" after replacing the fuel pressure sensor (for low pressure side).
Click here
| NG | | REPLACE FUEL DELIVERY PIPE RH (FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE)) |
|
| 18. | PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP DUTY RATIO) |
(a) Install the fuel pressure gauge (for low pressure line of low pressure side).
Click here
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty Ratio / Data List / Fuel Pressure (Low) / Fuel Pressure 2.
Powertrain > Engine > Active Test| Active Test Display |
|---|
| Control the Fuel Pump Duty Ratio |
| Data List Display |
|---|
| Fuel Pressure (Low) / Fuel Pressure 2 |
(f) Read the values on the Data List and the fuel pressure gauge when the Active Test was performed.
| Techstream Operation | Fuel Pressure (Low) / Fuel Pressure 2 | Fuel pressure gauge | Proceed to |
|---|---|---|---|
| Low | Below 600 kPag | Below 600 kPa (6.1 kgf/cm2, 87 psi) | A |
| 600 kPag or higher | 600 kPa (6.1 kgf/cm2, 87 psi) or higher | B |
| B | | REPLACE FUEL PUMP CONTROL ECU |
|
| 19. | CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTC.
Powertrain > Engine > Clear DTCs(e) Turn the engine switch off and wait for at least 30 seconds.
|
| 20. | CHECK WHETHER DTC OUTPUT RECURS (DTC P107A2A OR P107A64) |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Powertrain > Engine > Utility| Tester Display |
|---|
| All Readiness |
(c) Input the DTC: P107A2A or P107A64.
(d) Check the DTC judgment result.
| Result | Proceed to |
|---|---|
| NORMAL (DTCs are not output) | A |
| ABNORMAL (DTC P107A2A or P107A64 is output) | B |
| A | | CHECK FOR INTERMITTENT PROBLEMS |
| B | | REPLACE ECM |
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