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Symptom: P0500-NO VEHICLE SPEED SENSOR SIGNAL When Monitored and Set Condition: P0500-NO VEHICLE SPEED SENSOR SIGNAL When Monitored: Engine Temperature greater than 104 deg F. , MAP vacuum approxi- mately 15 9 to 169 inches of mercury and Engine RPM between 1400 and 3000 rpm. Set Condition: No Vehicle Speed Signal for more than 15 seconds on two consecutive trips. POSSIBLE CAUSES INTERMITTENT VEHICLE SPEED SIGNAL 5 VOLT SUPPLY CIRCUIT OPEN SENSOR GROUND CIRCUIT OPEN VEHICLE SPEED SIGNAL CIRCUIT OPEN VEHICLE SPEED SIGNAL CIRCUIT SHORTED TO GROUND VEHICLE SPEED SIGNAL CIRCUIT SHORTED TO VOLTAGE POWERTRAIN CONTROL MODULE (VEHICLE SPEED SENSOR) TEST ACTION APPLICABILITY 1 Turn the ignition on. t , read PCM DTCs. Is the Good Trip Counter for P-0500 displayed and equal to 0? All Yes → No → 2 Turn the ignition off. All Yes → Repair the 5 Volt Supply circuit for an open. No → 185 DRIVEABILITY - GAS |