DTC P0121:00 [MZR-CD 2.2]
id0102f3146900
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DTC P0121:00 |
APP sensor No.1/No.2 position correlation problem |
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DETECTION CONDITION
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• The PCM monitors the input signals from the APP sensor No.1 and the APP sensor No.2. If the difference between the APP sensor No.1 voltage and the APP sensor No.2 voltage is more than 0.5 V, the PCM determines that there is a malfunction in the APP sensor characteristic.
MONITORING CONDITIONS
Diagnostic support note
• The MIL illuminates if the PCM detects the above malfunction condition during the 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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• APP sensor No.1 malfunction
• APP sensor No.2 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 DTC Reading Procedure.
• Is the same 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 APP SENSOR NO.1 AND NO.2
• Inspect the APP sensor.
• Is there any malfunction?
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Yes
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Replace the accelerator pedal, then go to the next step.
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No
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Go to the next step.
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5
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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 DTC Reading Procedure.
• Is the same 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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6
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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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