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Home >> Ford >> 1990 >> Bronco II 4WD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Test DH - Throttle Position (TP) Sensor >> Test DH: Step 90
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Test DH: Step 90

90) Continuous Memory Code 53: Monitor TPS Circuit Under Simulated Road Shock Conditions  Using KOEO Continuous Monitor Mode (Wiggle Test), observe DVOM or diagnostic tester for indication of fault while slowly opening throttle to WOT. Slowly bring throttle to closed position, lightly tap TPS and wiggle harness connector. This test attempts to find an open or short in the TPS, connectors and vehicle harness. If no fault is indicated, go to step 92). If fault is indicated, go to next step.