DTC P1603 [WL-C, WE-C (Thailand, General (L.H.D. R.H.D.) specs.)]
id0102b0838200
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DTC P1603 |
ID Number Unregistered |
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DETECTION CONDITION
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• PCM internal malfunction
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POSSIBLE CAUSE
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• After programming the immobilizer system, the DTC has not been cleared.
• The immobilizer system has not been programmed.
• 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 HAS BEEN RECORDED
• Has FREEZE FRAME 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 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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START THE ENGINE
• Start the engine.
• Can the engine be started?
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Yes
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Clear the DTC.
If DTC P1603 is displayed again even if it had been cleared, replace the PCM.
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No
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Program the immobilizer system and 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 inspection.
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No
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Troubleshooting completed.
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