Diesel Data
: Automotive Repair
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2003
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Neon L4-2.0L VIN C
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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P Code Charts
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P1603
P1603
Test 1:
SYMPTOM
P1603-PCM INTERNAL DUAL-PORT RAM COMMUNICATION
POSSIBLE CAUSES
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Fused Ignition Switch Output (off-run-start)
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PCM Internal Failure
