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Home >> Jeep >> 2004 >> Grand Cherokee Overland, AWD >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Fuel Injection System >> O2S Heater Relay >> Removal
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O2S Heater Relay: Removal

  1. Remove PDC cover.
  2. Remove relay from PDC.
  3. Check condition of relay terminals and PDC connector terminals for damage or corrosion. Repair if necessary before installing relay.
  4. Check for pin height (pin height should be the same for all terminals within the PDC connector). Repair if necessary before installing relay.
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