Diagnostic Test
- READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR THE DTC TO RETURN
- With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
- For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.
- With the scan tool, erase all DTCs.
- Turn the ignition off for a minimum of 10.0 seconds.
- Turn the ignition on.
- Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
- With the scan tool, read DTCs.
Did the DTC return?
Yes
- Go To 2
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
- CHECK FOR OTHER DTCS
- Refer to the recorded DTCs.
Are there any 5-Volt Reference or Fuel Pressure Sensor circuit DTCs active or pending?
Yes
- Perform the applicable diagnostic procedure(s). Refer to DIAGNOSTIC CODE INDEX .
No
- Go To 3
- Refer to the recorded DTCs.
- CHECK THE FUEL PRESSURE SENSOR CONNECTOR AND TERMINALS
- Turn the ignition off.
- Check the Fuel Pressure Sensor harness connector for proper connection at the Fuel Pressure Sensor.
- Verify that the connector is completely plugged in and properly locked prior to disconnecting.
- Disconnect the Fuel Pressure Sensor harness connector and check for any pushed out, damaged or spread terminals.
Were any issues found with the connector or terminals?
Yes
- Repair the damaged terminal or properly connect and lock the Fuel Pressure Sensor harness connector and retest for DTCs.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Go To 4
- VISUALLY INSPECT THE FUEL SYSTEM FOR LEAKS OR RESTRICTIONS
- Visually inspect the fuel system for leaks or restrictions.
Were any fuel system issues found?
Yes
- Perform the appropriate repairs.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Go To 5
- Visually inspect the fuel system for leaks or restrictions.
- CHECK THE FUEL DELIVERY SYSTEM FOR PROPER OPERATION
- Perform the CHECKING THE FUEL DELIVERY SYSTEM (HARD START) test procedure. Refer to CHECKING THE FUEL DELIVERY SYSTEM (HARD START)
.
Is the Fuel Pump Assembly operating to specifications?
Yes
- Replace the Fuel Pressure Sensor in accordance with the Service Information.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Replace the Fuel Pump Assembly in accordance with the Service Information.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
- Perform the CHECKING THE FUEL DELIVERY SYSTEM (HARD START) test procedure. Refer to CHECKING THE FUEL DELIVERY SYSTEM (HARD START)
.