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DTC P00CF: Abnormal Correlation Between Boost Pressure Sensor And Barometric Pressure Sensor
 
 
 
 
TECHNICAL DESCRIPTION
The ECM detects abnormality in the sensor by comparing the boost pressure sensor output with the barometric pressure sensor output.
 
 
MONITOR EXECUTION
  • Continuous
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Engine coolant temperature sensor
  • Manifold absolute pressure sensor
  • Boost pressure sensor
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • More than 2 seconds have passed since the engine starting sequence was completed.
  • Engine coolant temperature is higher than 0°C (32°F).
  • Mass airflow sensor output is 6 g/sec or less.
  • More than 2 seconds have passed after the above mentioned conditions have been met.
Judgment Criterion
  • Difference between boost pressure sensor output and barometric pressure sensor output is more than 11.9 kPa (3.51 in.Hg) for 2 seconds.
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • None.
 
 
OBD-II DRIVE CYCLE PATTERN
  • Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 1 .
 
 
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are: )
  • Boost pressure sensor failed.
  • Boost pressure sensor circuit harness damage, or connector damage.
  • Barometric pressure sensor failed.
  • ECM failed.

 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), read the diagnostic trouble code (DTC).
cautionTo 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) to the data link connector.
(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 P00CF set?
Refer to Diagnostic Trouble Code Chart .
Go to Step 2.
 
STEP 2. Check of harness damage in UPS5 line between boost pressure sensor connector and ECM connector.
Is the harness wire in good condition?
Go to Step 3.
Repair the connector(s) or wiring harness. Then go to Step 7.
 
STEP 3. Check of harness damage in UPS line between boost pressure sensor connector and ECM connector.
Is the harness wire in good condition?
Go to Step 4.
Repair the connector(s) or wiring harness. Then go to Step 7.
 
STEP 4. Check of harness damage in E line between boost pressure sensor connector and ECM connector.
Is the harness wire in good condition?
Go to Step 5.
Repair the connector(s) or wiring harness. Then go to Step 7.
 
STEP 5. Using scan tool (M.U.T.-IIISE), check data list item 125: Boost Pressure Sensor.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool (M.U.T.-IIISE) to the data reading mode for item 125, Boost Pressure Sensor.
  • When altitude is 0 m (0 foot), 101 kPa (29.8 in.Hg).
  • When altitude is 600 m (1,969 feet), 95 kPa (28.1 in.Hg).
  • When altitude is 1,200 m (3,937 feet), 88 kPa (26.0 in.Hg).
  • When altitude is 1,800 m (5,906 feet), 81 kPa (23.9 in.Hg).
(3) Start the engine.
  • When the engine is idling, 70 - 110 kPa (20.7 - 32.4 in.Hg) (Near the atmospheric pressure).
  • When the engine is suddenly revved, boost pressure varies.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the sensor operating properly?
Go to Step 6.
Replace the boost pressure sensor. Then go to Step 7.
 
STEP 6. Check the trouble symptoms.
(1) Carry out 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 P00CF set?
Replace the ECM (Refer to Removal and Installation ). Then go to Step 7.
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 .
 
STEP 7. 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 P00CF set?
Retry the troubleshooting.
The inspection is complete.