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Home >> Toyota >> 1995 >> Tercel Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Testing >> Code P0510 - Closed Throttle Position Switch Malfunction >> Diagnosis & Repair (OBD-II Scan Tester Only)

Diagnosis & Repair (OBD-II Scan Tester Only)

  1. Ensure ignition is off. Disconnect TPS harness connector. Turn ignition on. Using DVOM, measure voltage between terminals No. 1 and 2. See Figure. If voltage is 9-14 volts, replace TPS and retest. If voltage is NOT 9-14 volts, go to next step.
  2. Turn ignition off. Inspect circuits between TPS and ECM for open. Repair as needed. If circuits are okay, replace ECM and retest.
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