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Home >> Oldsmobile >> 1990 >> Cutlass Calais Base, 4D Sedan, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.3L PFI >> Diagnostic Tests >> Code 22: TPS Signal Volt Low >> Notes

Code 22: TPS Signal Volt Low: Notes

  1. Code 22 will set if engine is running and TPS signal voltage is less than .24 volt.
  2. Simulates Code 21. If ECM recognizes the high signal voltage, the ECM and wiring are okay.
  3. With closed throttle, ignition on or engine at idle, voltage should be .33-.46 volt. If voltage is not okay, check TPS adjustment.
  4. Simulates a high signal voltage. Checks circuit No. 417 for open.
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