DTC P0181:00 [MZR-CD 2.2]
id0102f3147300
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DTC P0181:00 |
Fuel temperature sensor circuit range/performance problem |
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DETECTION CONDITION
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• The PCM monitors the input signal from the fuel temperature sensor. If the difference between the fuel temperature before engine warm-up and the fuel temperature after engine warm-up is less than 1 °C {1.8 °F}, the PCM determines that there is a malfunction in the fuel temperature sensor.
Diagnostic support note
• The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.
• FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
• The DTC is stored in the PCM memory.
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POSSIBLE CAUSE
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• Fuel temperature sensor connector or terminals malfunction
• Fuel temperature sensor malfunction
• PCM connector or terminals malfunction
• PCM malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED
• Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
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Yes
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Go to the next step.
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No
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Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.
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2
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
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Yes
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Perform repair or diagnosis according to the available Service 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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VERIFY CURRENT INPUT SIGNAL STATUS IS CONCERN INTERMITTENT OR CONSTANT
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine.
• Perform the Pending Trouble Code Access Procedure.
• Is the PENDING CODE for this DTC present?
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Yes
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Go to the next step.
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No
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Intermittent concern exists.
• Perform the “INTERMITTENT CONCERN TROUBLESHOOTING” procedure.
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4
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INSPECT FUEL TEMPERATURE SENSOR CONNECTOR CONDITION
• Switch the ignition to off.
• Disconnect the fuel temperature sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the connector and/or terminals, then go to Step 7.
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No
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Go to the next step.
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5
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INSPECT FUEL TEMPERATURE SENSOR
• Inspect the fuel temperature sensor.
• Is there any malfunction?
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Yes
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Replace the supply pump, then go to Step 7.
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No
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Go to the next step.
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6
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INSPECT PCM CONNECTOR CONDITION
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the connector and/or terminals, then go to the next step.
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No
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Go to the next step.
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7
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VERIFY DTC TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine.
• Perform the Pending Trouble Code Access Procedure.
• Is the PENDING CODE for this DTC present?
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Yes
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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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8
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VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [MZR-CD 2.2].)
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No
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DTC troubleshooting completed.
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