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Home >> Cadillac >> 2008 >> SRX 3.6 7, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 3.6L - DTC P0341 To DTC P2099 >> DTC P2008, P2009, or P2010 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the IMRC solenoid.
  2. Ignition ON, test for B+ between the ignition voltage circuit terminal E and ground.
    • If less than B+, repair the ignition voltage circuit of the IMRC solenoid for a short to ground or an open/high resistance. Replace the fuse, if necessary.
  3. Ignition OFF, connect a test lamp between the control circuit terminal C and the ignition voltage circuit terminal E.
    4. IMPORTANT: The control circuit for the IMRC solenoid is pulled-up to voltage within the ECM, 2.0-3.0 volts on the control circuit is normal.
  4. Ignition ON, command the IMRC solenoid ON and OFF with a scan tool. The test lamp should turn ON and OFF.
    • If the test lamp remains ON all the time, test for a short to ground on the control circuit. If circuit/connections test normal, replace the ECM.
    • If the test lamp remains OFF all the time, test for a short to voltage or an open/high resistance on the control circuit. If circuit/connections test normal, replace the ECM.
  5. Test for 2.0-3.0 volts between the control circuit terminal C and ground.
    • If the voltage is not within the specified range, replace the ECM.
  6. Connect a test lamp between the ground circuit terminal D and B+. The test lamp should illuminate.
    • If the test lamp does not illuminate, repair the open/high resistance in the ground circuit of the IMRC solenoid.
  7. If all circuits/connections test normal, replace the IMRC solenoid.
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