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Symptom: P0501-VEHICLE SPEED SIGNAL PERFORMANCE When Monitored and Set Condition: P0501-VEHICLE SPEED SIGNAL PERFORMANCE When Monitored: With the engine running, transmission not in park or neutral, brakes not applied, and engine rpm greater than 1500. Set Condition: This code will set if no vehicle speed signal is received from the Body Control Module for more than 11 seconds for 2 consecutive trips. POSSIBLE CAUSES GOOD TRIP EQUAL TO ZERO (K75) VSS CIRCUIT SHORTED TO BATTERY VOLTAGE RESISTANCE IN THE (F856) 5-VOLT SUPPLY RESISTANCE BETWEEN GROUND AND THE (F856) 5-VOLT SUPPLY CIRCUIT VEHICLE SPEED SENSOR RESISTANCE BETWEEN GROUND AND THE (K75) VSS SIGNAL CIRCUIT (K75) VSS SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT PCM TEST ACTION APPLICABILITY 1 Ignition on, engine not running. t, read DTCs and record the related Freeze Frame data. Is the Good Trip Counter displayed and equal to zero? All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION Symptom (Diagnos- tic Procedure). 2 Disconnect the Vehicle Speed Sensor harness connector. All Yes → Repair the short to voltage in the (K75) VSS Signal circuit. Perform POWERTRAIN VERIFICATION TEST VER - 5. No → Go To 3 181 DRIVEABILITY - NGC |