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Symptom List: P0506-IDLE SPEED LOW PERFORMANCE Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be P0506-IDLE SPEED LOW PER- When Monitored and Set Condition: P0506-IDLE SPEED LOW PERFORMANCE When Monitored: Engine Running. During an idle condition. Set Condition: If the engine RPM does not come within a calibratable low limit of the target idle speed, a failure timer will increment. When the appropriate failure timer P0507-IDLE SPEED HIGH PERFORMANCE When Monitored: Engine Running. During an idle condition. Set Condition: If the engine RPM does not come within a calibratable high limit of the target idle speed, a failure timer will increment. When the appropriate failure timer P0519-IDLE SPEED PERFORMANCE When Monitored: With the engine idling and the transmission in drive, if automatic. There must not be a MAP sensor trouble code or a Throttle Position Sensor trouble code. Set Condition: The engine idle is not within 200 rpm above or 100 rpm below the target idle for 50 seconds. Two trip fault. POSSIBLE CAUSES GOOD TRIP EQUAL TO ZERO PCV SYSTEM IAC MOTOR PASSAGES VACUUM LEAKS AIR INDUCTION SYSTEM THROTTLE BODY AND THROTTLE LINKAGE 197 DRIVEABILITY - NGC |