Operation CHARM
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Jeep
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2004
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TJ (CANADA) L6-4.0L
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Body Control Module
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Testing and Inspection
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Symptom Related Diagnostic Procedures
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Instrument Cluster
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Speedometer Inaccurate or Inoperative
Speedometer Inaccurate or Inoperative
Test 1 - 3:
SYMPTOM
SPEEDOMETER INACCURATE OR INOPERATIVE
POSSIBLE CAUSES
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PCM
DTC present
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Incorrect configuration
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Intermittent condition
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Instrument cluster