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Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 566 (Anti-Theft System) >> Diagnosis And Testing >> Passive Anti-Theft System (PATS) - Symptom Chart >> Symptom Chart

Symptom Chart

WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHART

Condition Possible Sources Action
  • The anti-theft indicator is always/never on - engine cranks, but no three-second theft indicator prove-out
  • Powertrain control module (PCM).
  • Theft indicator.
  • The anti-theft system does not operate correctly - anti-theft number of programmed keys is below minimum
  • Number of programmed keys is below minimum.
  • Powertrain control module (PCM).
  • Circuitry.
  • Passive anti -theft system (PATS) transceiver.
  • Unprogrammed key.
  • The anti-theft system does not operate correctly - antenna not connected or damaged transceiver
  • Passive anti -theft system (PATS) key.
  • Powertrain control module (PCM).
  • Circuitry.
  • PATS transceiver.
  • The anti-theft system does not operate correctly - passive anti-theft system (PATS) key transponder signal is not received - damaged key or non-PATS key
  • PATS key.
  • Powertrain control module (PCM).
  • Circuitry.
  • PATS transceiver.
  • The anti-theft system does not operate correctly - passive anti-theft system (PATS) received incorrect key-code from key transponder (unprogrammed PATS key)
  • PATS key.
  • Powertrain control module (PCM).
  • The anti-theft system does not operate correctly - passive anti-theft system (PATS) received invalid format of keycode from PATS key transponder (partial key read)
  • PATS key.
  • Powertrain control module (PCM).
  • Circuitry.
  • PATS transceiver.
  • The anti-theft system does not operate correctly - passive anti-theft system (PATS) transceiver signal is not received (not connected, damaged, or wiring)
  • PATS key.
  • Powertrain control module (PCM).
  • Circuitry.
  • PATS transceiver.
  • The vehicle does not start - theft indicator proves out for three seconds as normal
  • Starter relay.
  • Powertrain control module (PCM).
  • Circuitry.
  • Passive anti -theft system (PATS) key.
  • PATS key code.
  • PATS key transponder key code.
  • PATS key transponder key code format.
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