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6E1–195 X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION DIAGNOSTIC TROUBLE CODE (DTC) P0506 IDLE CONTROL SYSTEM RPM LOWER THAN EXPECTED D06RX112 Circuit Description The engine control module (ECM) controls engine idle Conditions for Setting the DTC D No intrusive tests being run. D Engine run time is more than 125 seconds. D No TPS, VSS, ECT, EGR, MAP, IAT, low voltage, fuel D Barometric pressure is greater than 72.7 kPa. D Canister purge duty cycle is above 0%. D Engine coolant temperature (ECT) is above 50 ° C (122 ° F). D Intake air temperature above –40 ° C (–40 ° F). D MAP is less than 60 kPa. D Ignition voltage is between 9.5 volts and 16 volts. D The throttle is closed. D All conditions are met for 10 seconds. D Engine speed is at least 100 RPM lower than desired Action Taken When the DTC Sets D The ECM will illuminate the malfunction indicator lamp D The ECM will store conditions which were present Conditions for Clearing the MIL/DTC D Diagnostic Trouble Code P0506 can be cleared by Diagnostic Aids Check for the following conditions: D Poor connection at ECM or IAC motor – Inspect |