STEP 1. Using scan tool (M.U.T.-IIISE), check data list item 124: Fuel Rail Pressure Sensor (Absolute)
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).
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(1) Connect scan tool (M.U.T.-IIISE). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-IIISE) . (2) Start the engine.
(3) Set scan tool (M.U.T.-IIISE) to the data reading mode for item 124, Fuel Rail Pressure Sensor (Absolute).
(4) Warm up the engine.- When the engine is idling, 4,000 - 21,000 kPa (1,181.4 - 6,202.0 in.Hg).
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Is the sensor operating properly?
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions . Go to Step 2.
STEP 2. Measure the voltage at fuel rail pressure sensor connector.
(1) Disconnect the connector and measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal HFPS line and ground.- Voltage should be between 4.9 and 5.1 volts.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the measured voltage between 4.9 and 5.1 volts?
Go to Step 5. Go to Step 3.
STEP 3. Check of open circuit in HFPS line between fuel rail pressure sensor connector and ECM connector.
STEP 4. Using scan tool (M.U.T.-IIISE), check data list item 124: Fuel Rail Pressure Sensor (Absolute)
(1) Start the engine.
(2) Set scan tool (M.U.T.-IIISE) to the data reading mode for item 124, Fuel Rail Pressure Sensor (Absolute).
(3) Warm up the engine.- When the engine is idling, 4,000 - 21,000 kPa (1,181.4 - 6,202.0 in.Hg).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the sensor operating properly?
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions . Replace the ECM (Refer to Removal and Installation ). Then go to Step 9.
STEP 5. Measure the resistance at fuel rail pressure sensor connector.
STEP 6. Check of open circuit and harness damage in HFPG line between fuel rail pressure sensor connector and ECM connector.
STEP 7. Using scan tool (M.U.T.-IIISE), check data list item 124: Fuel Rail Pressure Sensor (Absolute)
(1) Start the engine.
(2) Set scan tool (M.U.T.-IIISE) to the data reading mode for item 124, Fuel Rail Pressure Sensor (Absolute).
(3) Warm up the engine.- When the engine is idling, 4,000 - 21,000 kPa (1,181.4 - 6,202.0 in.Hg).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the sensor operating properly?
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions . Go to Step 8.
STEP 8. Replace the fuel rail (high pressure) (integrated with fuel rail pressure sensor).
STEP 9. 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 P0193 set?
Retry the troubleshooting. The inspection is complete.