DTC P0601 [L8, LF]
id0102b1809100
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DTC P0601 |
PCM memory check sum error |
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DETECTION CONDITION
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• The PCM internal memory check sum error.
Diagnostic support note
• This is a continuous monitor (CCM).
• The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA (Mode 2/Mode 12) is available.
• The DTC is stored in the PCM memory.
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POSSIBLE CAUSE
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• PCM internal memory 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 12) HAS BEEN RECORDED
• Has the FREEZE FRAME DATA (Mode 12) 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 12) 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 DTC TROUBLESHOOTING COMPLETED
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine and warm it up completely.
• Perform the KOEO/KOER self test.
(See KOEO/KOER SELF TEST [L8, LF].)
• 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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4
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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 troubleshooting.
(See DTC TABLE [L8, LF].)
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No
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DTC troubleshooting completed.
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