Test Notes

1999 Ford Ranger 2WD V6-3.0L VIN USECTION Test Notes
CAUTION:
- Electronic modules are sensitive to electrostatic discharge. If exposed to these charges, damage may result.
- Disconnect the battery before removing and installing the GEM or its connectors. Failure to follow this caution will result in the GEM storing many erroneous DTCs and possibly exhibiting erratic operation after installation.
- Be careful when probing the I/P fuse panel, power distribution box or any connectors. Damage will result to the connector receptacle if the probe or terminal being used is too large.

NOTE:
- If continuous DTCs are recorded and the symptom is not present when performing the pinpoint tests, an intermittent concern may be the cause. Always check for loose connections and corroded terminals.
- Complete the entire pinpoint test related to the symptom before replacing the GEM.
RENDER: 1.0x

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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.