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Home >> Oldsmobile >> 1991 >> Ninety-Eight Regency Elite >> Repair and Diagnosis >> Body & Frame >> Power Seats >> Component Tests >> Heated Seat Control Module >> Heater Element Isolation Test
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Heater Element Isolation Test

  1. Disconnect the Heated Seat Control Module connectors C2 and C3.
  2. Measure the resistance between connector C2, terminals A and B. See Figure or Figure . If the resistance is less than 1 ohm, go to step  4 . If the resistance is not less than 1 ohm, go to the next step.
  3. Check/repair the wires to the Seat Back Heater for an open. If the wires are OK, replace the open Seat Back Heater.
  4. Measure the resistance between connector C2, terminal A and ground. If the resistance is less than 1000, go to the next step. If the resistance is not less than 1000, go to step  6 .
  5. Check/repair the wires to the Seat Back Heaters for a short to ground. If the wires are OK, replace the shorted Seat Back Heater.
  6. Measure the resistance between connector C3, terminals B and C. If the resistance is 850-1150 ohms, go to step  8 . If the resistance is not 850-1150 ohms, go to the next step.
  7. Replace the Center Seat Bottom Heater.
  8. Measure the resistance between connector C3, terminal B and ground. If the resistance is less than 1000, go to the next step. If the resistance is not less than 1000, go to step  10 .
  9. Replace the Center Seat Bottom Heater.
  10. Measure the resistance between connector C3, terminals A and D. If the resistance is less than 1 ohm, go to step  12 . If the resistance is not less than 1 ohm, go to the next step.
  11. Check/repair the wires to the Seat Bottom Heaters for an open. If the wires are OK, replace the open Seat Back Heater.
  12. Measure the resistance between connector C3, terminal A and ground. If the resistance is less than 1000, go to the next step. If the resistance is not less than 1000, go to step  14 .
  13. Check/repair the wires to the Seat Bottom Heaters for a short to ground. If the wires are OK, replace the shorted Seat Back Heater.
  14. Check the Heated Seat Control Module for good terminal contact. If terminal contact is OK, replace the Heated Seat Control Module.
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