Mustang Cobra V8-281 4.6L DOHC VIN V MFI (1997)
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If data link diagnostic test passed and concern(s) remains, go to Step 4.
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If data link diagnostic test did not pass, go to Communication Systems Diagnostics.
4. Retrieve continuous DTCs from selected module.
5. Record all continuous DTCs.
6. Clear all continuous DTCs from selected module.
NOTE: The on-demand self-test program for an individual module may produce observable outputs.
7. Perform On-Demand Self Test procedure for selected module.
8. Record all on-demand DTCs.
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If DTCs are retrieved, go to the Diagnostic Trouble Code (DTC) Index for selected module to continue diagnostics. See: Diagnostic Trouble
Code Indexes
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If no DTCS are retrieved (on-demand self test passed) and concern(s) remains, go to Step 9.
9. If continuous DTCs were recorded in Step 5, go to the DTC Index for the selected module to continue diagnosis for all continuous DTCs. See:
Diagnostic Trouble Code Indexes If no continuous DTCs were retrieved, concern is not related to J1850 or ISO 9141 communication network(s)
and is not a module-monitored function. Return to referred section Symptom Chart for non-network related concern.
Communication System Diagnostic Preview Notes
Communication System Diagnostics
Before proceeding to the J1850 or ISO 9141 communication network Diagnostic Trouble Code (DTC) indexes to diagnose a network DTC:
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Review equipment level of vehicle.
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Make note of module and systems with which vehicle is not equipped.
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Before performing a pinpoint test, make sure DTC being diagnosed is referencing a module or system with which the vehicle is equipped.
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The New Generation Star (NGS) Tester may produce a network DTC for no communication if the vehicle is not equipped with the suspect module
or system.
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The NGS Tester will interpret a not equipped module as a communication failure.
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If a DTC is retrieved for a not equipped module or system, disregard this DTC.
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If a not equipped DTC is the only DTC retrieved, the communication system self test should be considered passed. See: Pinpoint Tests
