STEP 1. Using scan tool (M.U.T.-IIISE), read the diagnostic trouble code (DTC).
caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE). |
(1) Connect scan tool (M.U.T.-IIISE). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-IIISE) . (2) Turn the ignition switch to the "ON" position.
(3) Set scan tool (M.U.T.-IIISE), read the DFI and MFI-DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the diagnostic trouble code other than P0191 set?
Refer to Diagnostic Trouble Code Chart . Go to Step 2.
STEP 2. Check of open circuit, short circuit and harness damage in HFP5 line between fuel rail pressure sensor connector and ECM connector.
STEP 3. Check of short circuit and harness damage in HFPS line between fuel rail pressure sensor connector and ECM connector.
STEP 4. Check of short circuit and harness damage in HFPG line between fuel rail pressure sensor connector and ECM connector.
STEP 5. Measure the sensor output voltage at fuel rail pressure sensor connector.
STEP 6. Check of harness damage in HFP+ line between fuel pump (high pressure) connector and ECM connector.
STEP 7. Check of harness damage in HFP- line between fuel pump (high pressure) connector and ECM connector.
STEP 8. Check the trouble symptoms.
STEP 9. Check the trouble symptoms.
STEP 10. Check the trouble symptoms.
STEP 11. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 1 . (2) Check the diagnostic trouble code (DTC).
Is DTC P0191 set?
Retry the troubleshooting. The inspection is complete.