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Symptom: P0509-IAC VALVE SENSE CIRCUIT HIGH When Monitored and Set Condition: P0509-IAC VALVE SENSE CIRCUIT HIGH When Monitored: Engine running. Battery voltage greater than 10 volts. Set Condition: The IAC sense circuit is greater than 980 mA. One Trip Fault. POSSIBLE CAUSES IAC MOTOR OPERATION IAC MOTOR (K961) IAC RETURN CIRCUIT SHORTED TO VOLTAGE (K61) IAC MOTOR CONTROL CIRCUIT SHORTED TO VOLTAGE (K961) IAC RETURN CIRCUIT SHORTED TO (K61) IAC MOTOR CONTROL CIRCUIT PCM TEST ACTION APPLICABILITY 1 NOTE: If the engine will not idle, maintain an engine speed between 800 and t, read the IAC Current. Is the IAC Current above 999 mA? All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 2 Turn the ignition off. t, monitor the IAC Current. Turn the ignition on. t display IAC Current at 0mA? All Yes → Replace the IAC Motor. Perform POWERTRAIN VERIFICATION TEST VER - 5. No → Go To 3 2005 RS POWERTRAIN 202 DRIVEABILITY - NGC |