DTC P0098:00 [MZ-CD 1.6]

id0102g8146500

DTC P0098:00

Boost air temperature sensor circuit high input
DETECTION CONDITION
•  The PCM monitors the boost air temperature sensor. If the input voltage is more than 4.9 V, the PCM determines that the boost air temperature sensor circuit has a malfunction.
•  The PCM monitors the boost air temperature. If the boost air temperature exceeds -30.04 degrees C {-22.07 degrees F}, the PCM determines that there is a malfunction in the boost air temperature sensor circuit.
POSSIBLE CAUSE
•  Boost air temperature sensor connector or terminal malfunction
•  Short to power supply in the wiring harness between boost air temperature sensor terminal D and PCM terminal 214
•  Boost air temperature sensor malfunction
•  PCM connector or terminal malfunction
•  Open circuit in the wiring harness between boost air temperature sensor terminal B and PCM terminal 226
•  Open circuit in the wiring harness between boost air temperature sensor terminal D and PCM terminal 214
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related service repair information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE AND/OR DTC
•  Switch the ignition to ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the other PENDING CODE/DTC also present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6].)
No
Go to the next step.
4
INSPECT BOOST AIR TEMPERATURE SENSOR CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the boost air temperature sensor connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Go to the next step.
5
INSPECT BOOST AIR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Disconnect the boost air temperature sensor connector.
•  Switch the ignition to ON (engine off).
•  Measure the voltage at the boost air temperature sensor terminal D (wiring harness-side).
•  Is the voltage B+?
Yes
Repair or replace the wiring harness for a possible short to power supply, then go to Step 9.
No
Go to the next step.
6
INSPECT BOOST AIR TEMPERATURE SENSOR
•  Inspect the boost air temperature sensor.
•  Is there any malfunction?
Yes
Replace the boost air temperature sensor, then go to Step 9.
No
Go to the next step.
7
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Go to the next step.
8
INSPECT BOOST AIR TEMPERATURE SENSOR CIRCUIT FOR OPEN
•  Switch the ignition to ON (engine off).
•  Inspect for continuity between boost air temperature sensor and PCM at following wiring harness-side connector:
―  Boost air temperature sensor terminal B and PCM terminal 226
―  Boost air temperature sensor terminal D and PCM terminal 214
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, go to the next step.
9
VERIFY THAT DTC P0098:00 TROUBLESHOOTING IS COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [MZ-CD 1.6].)
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform the after repair procedure.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6].)
No
DTC troubleshooting completed.