DTC P0098:00 [PCM (SKYACTIV-X)]
id0102u9146500
Outline
System malfunction location |
Boost air temperature sensor circuit high input |
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Detection condition
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• The boost air temperature sensor output voltage exceeds 4.8 V for a continuous 5 s.
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Fail-safe
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• Inhibits the boost system.
• Stops the EGR control.
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Possible cause
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• Boost air temperature sensor/boost pressure sensor connector or terminals malfunction
• PCM connector or terminals malfunction
• Boost air temperature sensor malfunction
• Short to power supply in boost air temperature sensor signal circuit
• Open circuit in any of the following boost air temperature sensor circuits.
• PCM malfunction
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Diagnostic Procedure
Step |
Inspection |
Results |
Action |
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1
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RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
• Record the freeze frame data/snapshot data.
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—
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Go to the next step.
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2
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VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY
• Verify related Service Bulletins, on-line repair information, or Service Information availability.
• Is any related Information available?
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Yes
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Perform repair or diagnosis according to the available information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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3
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DETERMINE IF BOOST AIR TEMPERATURE SENSOR OR WIRING HARNESS MALFUNCTION
• Access the IAT2 PID using the M-MDS.
(See PID/DATA MONITOR INSPECTION.)
• Verify the IAT2 PID value.
• Is the IAT2 PID value 5 V or B+?
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Yes
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Go to Step 7.
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No
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Go to the next step.
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4
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INSPECT BOOST AIR TEMPERATURE SENSOR/BOOST PRESSURE SENSOR CONNECTOR FOR MALFUNCTION
• Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)
• Are the connector and terminal normal?
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Yes
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Go to the next step.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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5
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INSPECT PCM CONNECTOR FOR MALFUNCTION
• Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)
• Are the connector and terminal normal?
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Yes
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Go to the next step.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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6
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INSPECT BOOST AIR TEMPERATURE SENSOR FOR MALFUNCTION
• Inspect the applicable part.
• Is the part normal?
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Yes
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Go to repair completion verification.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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7
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DETERMINE IF BOOST AIR TEMPERATURE SENSOR SIGNAL CIRCUIT OR BOOST AIR TEMPERATURE SENSOR GROUND CIRCUIT MALFUNCTION
• Switch the ignition off.
• Disconnect the boost pressure sensor/boost air temperature sensor connector.
• Access the IAT2 PID using the M-MDS.
(See PID/DATA MONITOR INSPECTION.)
• Verify the IAT2 PID value.
• Is the IAT2 PID value 5 V or B+?
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Yes
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Go to the next step.
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No
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Go to Step 9.
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8
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INSPECT BOOST PRESSURE SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT
• Inspect the applicable circuit for open circuit.
(See CIRCUIT INSPECTION.)
• Is the circuit normal?
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Yes
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Inspect the signal circuit for a short to power supply.
(See CIRCUIT INSPECTION.)
• Repair or replace the malfunctioning location and perform the repair completion verification.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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9
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INSPECT BOOST PRESSURE SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT
• Inspect the applicable circuit for open circuit.
(See CIRCUIT INSPECTION.)
• Is the circuit normal?
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Yes
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Repair or replace the malfunctioning location and perform the repair completion verification.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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Repair completion verification 1
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VERIFY THAT VEHICLE IS REPAIRED
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Clear the DTC recorded in the memory.
(See CLEARING DTC.)
• Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
• Perform the DTC inspection for the PCM.
(See DTC INSPECTION.)
• Is the same Pending DTC present?
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Yes
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
• If the malfunction recurs, replace the PCM, then go to the next step.
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No
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Go to the next step.
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Repair completion verification 2
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VERIFY IF OTHER DTCs DISPLAYED
• Perform the DTC inspection.
(See DTC INSPECTION.)
• Are any other DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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