DTC P0087: Fuel Rail / System Pressure - Too Low: Procedure

1. Check around and beneath the car for fuel leaks, fumes, etc.

   OK

   No fuel leaks present.

NG → REPAIR OR REPLACE FUEL SYSTEM 

OK: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs. Refer to DTC CHECK / CLEAR .
4. Start the engine.
5. Enter the following menus: Powertrain / Engine / Trouble Codes.
6. Read the DTCs using Techstream.

   Result

   Display (DTC output)	Proceed to
   P0087	A
   P0087 and other DTCs	B

   HINT: 

   If any codes other than P0087 are output, perform troubleshooting for those DTCs first.

B → See step   12 

A: Go to next step 

1. Has the vehicle run out of fuel in the past?

YES → DTC CAUSED BY RUNNING OUT OF FUEL 

NO: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Enter the following menus: Powertrain / Engine / Data List / Cylinder #1 (to #6) Misfire Count.
4. Allow the engine to idle.
5. Read each value of Cylinder #1 (to #6) Misfire Count displayed on the Techstream.
6. Check if there is a particular cylinder that the misfire count is concentrated on.

   Result

   Misfire Count	Proceed to
   No misfire counts, or misfire counts occur randomly in all cylinders	A
   Misfire counts occur in particular cylinder	B

B → See step   13 

A: Go to next step 

1. Connect Techstream to the DLC3.
2. Start the engine.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Fuel Press.
5. Check that the fuel pressure fluctuates when the engine condition changes from idling to racing.

   Result

   Inspection Result	Proceed to
   Fuel pressure does not fluctuate	A
   Fuel pressure fluctuates	B
   Fuel pressure does not rise	C

A → See step   14 

B → See step   8 

C: Go to next step 

1. Check the fuel pump operation. Refer to ON-VEHICLE INSPECTION - Step 1 .

NG → See step   15 

OK: Go to next step 

1. Check the fuel pressure (low pressure side). Refer to ON-VEHICLE INSPECTION - Step 2 .

NG → See step   16 

OK: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn Techstream on.
3. Enter the following menus: Powertrain / Engine / Data List / Fuel Press.
4. Start the engine.
5. Check that the fuel pressure fluctuations when the engine switch is turned off.

   HINT: 

   Turn the engine switch off and on (IG) before checking the fuel pressure.

   Fig 1: View Of Fuel Pressure Fluctuation Graph

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result

   Inspection Result	Proceed to
   Fuel pressure is almost constant, or fluctuations are gradual	A
   Fuel pressure drops suddenly	B

A → See step   10 

B: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn Techstream on.
3. Enter the following menus: Powertrain / Engine / Data List / Fuel Press.
4. Start the engine.
5. Check the fuel pressure fluctuations when the fuel hose is pressed with your fingers.

   Result

   Inspection Result	Proceed to
   Pressing the hose raises the fuel pressure slightly	A
   Fuel pressure does not fluctuate	B

B → See step   17 

A: Go to next step 

1. Replace the fuel pump for high pressure. Refer to REMOVAL .

NEXT: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs. Refer to DTC CHECK / CLEAR .
4. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
5. Enter the following menus: Powertrain / Engine / Trouble Codes.
6. Read the DTCs.

   Result

   Display (DTC output)	Proceed to
   P0087	A
   No output	B

B → END 

A → See step   18