LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2004 >> CTS Base, 3.6 7 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Engine Controls - 2.6L & 3.2L - Diagnosis (DTC P0449 - P2010)) >> Diagnostic Trouble Codes >> DTC P2010 >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.

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

  1. 2:  Listen for an audible click when the intake manifold runner control (IMRC) solenoid operates. Command both the ON and OFF states. Repeat the commands as necessary.
  2. 4:  This step verifies that the ECM is providing ground to the IMRC solenoid.
  3. 5:  This step tests for an open in the battery positive voltage circuit to the IMRC solenoid.
  4. 6:  This step tests if voltage is constantly being applied to the IMRC solenoid control circuit.
DTC P2010

Step Action 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. Turn ON the ignition, with the engine OFF.
  2. Command the intake manifold runner control (IMRC) solenoid ON and OFF with a scan tool.
Does the IMRC solenoid click with each command?		 Go to Step 3  Go to Step 4 
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 as specified in the supporting text or as close to the Freeze Frame/Failure Records that you observed.
Does the DTC fail this ignition?		 Go to Step 4  Go to Intermittent Conditions
4 
  1. Turn OFF the ignition.
  2. Disconnect the IMRC solenoid.
  3. Turn ON the ignition, with the engine OFF.
  4. Probe the control circuit of the IMRC solenoid with a test lamp that is connected to battery voltage.
  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 
  1. Connect a test lamp between the control circuit of the IMRC solenoid and the positive voltage circuit of the IMRC solenoid.
  2. Command the IMRC solenoid ON and OFF with a scan tool.
Does the test lamp turn ON and OFF?		 Go to Step 9  Go to Step 11 
6  Does the test lamp remain OFF with each command? Go to Step 8  Go to Step 7 
7 Test the control circuit of the IMRC solenoid for an short to ground or an open.
Did you find and correct the condition?		 Go to Step 14  Go to Step 10 
8 Test the control circuit of the IMRC solenoid for a short to voltage.
Did you find and correct the condition?		 Go to Step 14  Go to Step 13 
9 Inspect for poor connections at the IMRC solenoid.
Did you find and correct the condition?		 Go to Step 14  Go to Step 12 
10 Inspect for poor connections at the harness connector of the engine control module (ECM).
Did you find and correct the condition?		 Go to Step 14  Go to Step 13 
11 Repair the battery positive voltage circuit of the IMRC solenoid.
Did you complete the repair?		 Go to Step 14  -
12 Replace the IMRC solenoid.
Did you complete the replacement?		 Go to Step 14  -
13 Replace the ECM. Refer to Engine Control Module (ECM) Replacement .
Did you complete the replacement?		 Go to Step 14  -
14
  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 as specified in the supporting text.
Does the DTC run and pass?		 Go to Step 15  Go to Step 2 
15 With a scan tool, observe the stored information, Capture Info.
Does the scan tool display any DTCs that you have not diagnosed?		 Go to Diagnostic Trouble Code (DTC) List System OK
scientia non olet · About LEMON Manuals