Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY1998SABLE V6-3.0L DOHC VIN SREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESCOMMUNICATION ERROR (NORMAL AND ABNORMAL PCM RESPONSES)
1998 Mercury Sable V6-3.0L DOHC VIN S
Communication Error (Normal and Abnormal PCM Responses)
1998 Mercury Sable V6-3.0L DOHC VIN SSECTION Communication Error (Normal and Abnormal PCM Responses)
It is possible to receive a communication error from a scan tool when initiating a diagnostic test or accessing Parameter Identification (PIDs). The communication error can be caused by operator error, the vehicle wiring, connectors, the Powertrain Control Module (PCM) or other control modules connected to the Data Link Connector (DLC) wiring. The PCM will respond to a scan tool whenever the tool requests a test. These are not diagnostic trouble codes. The illustration lists some of the numeric codes and generic descriptions that a scan tool may display when trying to perform some PCM operations. It is possible to get other numeric codes not listed. For a complete list of communication response codes, refer to Society of Automotive Engineers (SAE) document J2190 enhanced ELE Diagnostic Test Modes. Some are normal responses to valid requests. The others are communication error responses. If the tool displays any of the communication error responses, refer to Pinpoint Test Step QA1, after checking scan tool connections, cable/adapters and entry of vehicle information. QA - Unable to Activate Self-Test/SCP Error/DTC Not Listed
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.