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Home >> Hyundai >> 1994 >> Scoupe Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> Code 3153 - Throttle Position Sensor Failure >> Harness Inspection

Harness Inspection

  1. Measure TPS power supply voltage. Disconnect TPS harness connector. Turn ignition on. Using DVOM, measure voltage between TPS harness connector terminal No. 2(middle terminal) and vehicle ground. Voltage should be 4.8-5.2 volts.
  2. If voltage is not within specification, turn ignition off. Disconnect ECM connector. Connect jumper wire between ECM harness connector terminal No. 12 and vehicle ground. See Figure . Using ohmmeter, measure resistance between TPS harness connector terminal No. 2 (middle terminal) and vehicle ground. If continuity does not exist, inspect and repair circuit as needed. If continuity exists, substitute ECM with known good unit and retest.
  3. Check continuity of TPS ground circuit. Using ohmmeter, check resistance between TPS harness connector terminal No. 1 (Yellow/Black wire on non-turbo, Black wire on turbo) and vehicle ground. If continuity does not exist, inspect and repair circuit as needed.
  4. Check continuity of output circuit between TPS and ECM. Ensure ignition is off. Connect jumper wire between ECM harness connector terminal No. 53 (Green/Red wire) and vehicle ground. See Figure . Using ohmmeter, check resistance between TPS harness connector terminal No. 3 (Green/Red wire) and vehicle ground. If continuity does not exist, inspect and repair circuit as needed.
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