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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1166 (Engine Controls Diagnosis - 3.6L (Ly7) (DTC P1845 To DTC P2196)) >> Diagnostic Trouble Codes >> DTC P2009 >> Test Description

Test Description

WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  Listen for an audible click when the IMRC solenoid operates. Command both the ON and OFF states. Repeat the commands as necessary.
  2. 5:  This step tests the feedback voltage from the ECM. If a voltage is not available, this indicates an internal ECM condition.
  3. 6:  This step tests the ignition 1 voltage circuit to the EVAP canister purge valve.
DTC P2009 Intake Manifold Runner Control (IMRC) Solenoid Control Circuit Low Voltage

Step Action Values Yes No
Schematic Reference:  Engine Controls Schematics 
Connector End View Reference:  Engine Control Module (ECM) Connector End Views  or  Engine Controls Connector End Views 
1 Did you perform the Diagnostic System Check-Engine Controls? - Go to Step 2  Go to Diagnostic System Check - Engine Controls
2 
  1. Start the engine.
  2. Observe the DTC information with a scan tool.
Does the DTC fail this ignition?		 - Go to Step 4  Go to Step 3 
3
  1. Observe the Freeze Frame/Failure Records for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 4  Go to Diagnostic Aids
4
  1. Turn OFF the ignition.
  2. Disconnect the intake manifold runner control (IMRC) solenoid.
  3. Turn ON the ignition, with the engine OFF.
  4. Connect a test lamp between the ignition 1 voltage circuit of the IMRC solenoid and the control circuit of the IMRC solenoid.
  5. Command the IMRC solenoid ON and OFF with a scan tool.
Does the test lamp turn ON and OFF?		 - Go to Step 5  Go to Step 6 
5  Measure the voltage from the control circuit of the IMRC solenoid to the engine control module (ECM) housing with a DMM.
Is the voltage within the specified range?		 2.6-4.6 V Go to Step 9  Go to Step 10 
6  Connect a test lamp between the ignition 1 voltage circuit of the IMRC solenoid and the ECM housing.
Does the test lamp illuminate?		 - Go to Step 7  Go to Step 8 
7
  1. Turn OFF the ignition.
  2. Disconnect the ECM.
  3. Test the control circuit of the IMRC solenoid for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 11  Go to Step 10 
8
    IMPORTANT: The ignition 1 voltage circuit supplies voltage to other components. Make sure you test all circuits for a short to ground or test all components for being shorted that share the ignition 1 voltage circuit.
  1. Repair the short to ground in the ignition 1 voltage circuit of the IMRC solenoid. Refer to Wiring Repairs in Wiring Systems.
  2. Replace the fuse.
Did you complete the repair?		 - Go to Step 11  -
9 Replace the IMRC solenoid. Refer to Intake Manifold Runner Control Solenoid Replacement .
Did you complete the replacement?		 - Go to Step 11  -
10 Replace the ECM. Refer to Engine Control Module (ECM) Replacement .
Did you complete the replacement?		 - Go to Step 11  -
11
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 2  Go to Step 12 
12 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List System OK
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