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 MANUALSFORD1998TAURUS V6-3.0L DOHC VIN SREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINTRANSMISSION CONTROL SYSTEMSTESTING AND INSPECTIONPINPOINT TESTSBEFORE PINPOINT TESTSAX4N
1998 Ford Taurus V6-3.0L DOHC VIN S
AX4N
1998 Ford Taurus V6-3.0L DOHC VIN SSECTION AX4N
If DTCs appear while performing the self-test, refer to the On-Board Diagnostic Trouble Code Description Chart for the appropriate service procedure.
NOTE: Prior to entering pinpoint tests, refer to the TSBs for AX4S concerns.
NOTE: Prior to entering pinpoint tests, the vehicle harness must be checked for continuity and shorts, and the PCM must be checked for any concerns.
NOTE: If any non-transaxle DTCs appear, service those DTCs first. They could affect the electrical operation of the transaxle. Record and erase codes from continuous memory after repairs have been performed. After servicing any DTCs in the Quick Test, the Quick Test should be repeated.
NOTE: Check the PCM system wiring harness for proper connection, bent or broken pins, corrosion, loose wires, proper routing, proper seals and their condition. Check the PCM sensors and actuators for physical damage.
NOTE: Prior to entering pinpoint tests, refer to the TSBs for AX4S concerns.
NOTE: Prior to entering pinpoint tests, the vehicle harness must be checked for continuity and shorts, and the PCM must be checked for any concerns.
NOTE: If any non-transaxle DTCs appear, service those DTCs first. They could affect the electrical operation of the transaxle. Record and erase codes from continuous memory after repairs have been performed. After servicing any DTCs in the Quick Test, the Quick Test should be repeated.
NOTE: Check the PCM system wiring harness for proper connection, bent or broken pins, corrosion, loose wires, proper routing, proper seals and their condition. Check the PCM sensors and actuators for physical damage.
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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.