P2010

Diagnostic Chart:

Schematic:

Each (one per bank) variable intake manifold runner is a shaft with three flaps located inside the intake manifold, which is controlled by an externally located vacuum operated diaphragm. As the diaphragm moves above a certain engine speed/load range, the flaps cover intake ports, which change induction airflow characteristics. The ECM controls the intake manifold runner diaphragms by controlling their vacuum supply via the intake manifold runner control (IMRC) solenoid. The IMRC solenoid is supplied continuos manifold 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 be low. The ECM IMRC solenoid feedback circuit uses a pull-up voltage (2.6-4.6 volts), which allows the ECM to individually differentiate between and open, short to ground or short to voltage. DTC P2010 will set if the ECM detects higher than normal feedback voltage when the IMRC solenoid is commanded On with engine running.

DTC PARAMETERS
DTC P2010 will set if IMRC solenoid feedback voltage is greater than 4.6 volts when IMRC solenoid is commanded On when:
^ Condition exists for longer than 0.5 seconds
^ Engine speed is greater than 40 rpm
^ Main relay voltage is between 8.0 and 18.0 volts

DTC P2010 diagnostic runs continuously once the above conditions have been met.

P2010 is a type D DTC.

DIAGNOSTIC AIDS
To locate an intermittent problem, use Scan tool to command INTAKE MANIFOLD RUNNER CONTROL SOLENOID On and Off with ignition On, engine Off. Wiggling wires while listening for the IMRC solenoid to stop clicking may locate a shorted solenoid or the area where a short to voltage in the wiring may exist.

IMRC solenoid resistance: 18-27 ohms