P2009

Wiring Diagram:

Intake Manifold Runner Control (IMRC) Solenoid Control Circuit Low Voltage:

P2009-INTAKE MANIFOLD RUNNER CONTROL (IMRC) SOLENOID CONTROL CIRCUIT LOW VOLTAGE
The intake manifold runner is a long moveable divider inside the intake manifold, which changes induction airflow characteristics as it pivots above a certain engine speed/load range. The ECM controls the intake manifold runner by controlling the intake manifold runner control (IMRC) solenoid. The IMRC solenoid is supplied continuous ported vacuum. which is transferred to the intake manifold runner diaphragms whenever the solenoid is energized. The ECM controls the solenoid by supplying the circuit ground. When the solenoid is commanded Off (circuit not grounded). the voltage level at the ECM should be high (ignition voltage). When the solenoid is commanded On (circuit grounded), the voltage level at the ECM should he low. The ECM IMRC solenoid feedback circuit uses a pull-up voltage (4.6-6.6 volts). which allows the ECM to individually differentiate between an open, short to ground or short to voltage. DTC P2009 will set if the ECM detects lower than normal feedback voltage when the IMRC solenoid is commanded Off with engine running/cranking.

DTC PARAMETERS
DTC P2009 will set if IMRC solenoid feedback voltage is less than 4 6 volts when IMRC solenoid is commanded Ott when.
^ Condition exists for longer than 0.5 seconds
^ Engine speed is greater than 40 rpm
^ Battery voltage is between 7.5 and 15 volts

DTC P2009 diagnostic runs continuously once the above conditions have been met.

P2009 is a type D DTC

DIAGNOSTIC AIDS
To locate an intermittent problem, use Scan tool to monitor DTC P2009 LAST TEST with engine running. Wiggling wires while watching for a change from PASSED to FAILED may locate the area where a short to ground in the wiring may exist.

IMRC solenoid resistance: 18-27 ohms