Diagnostic Trouble Codes: Notes

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NOTE: Before clearing DTCs, perform On-Board Diagnostic (OBD) System Check. See the F - BASIC TESTING - 7.4L article. Record FREEZE FRAME and FAILURE RECORDS for reference during testing. Data will be erased when DTCs are cleared. If PCM/VCM is replaced, NEW PCM/VCM must be programmed using special manufacturer's equipment.