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Home >> Chevrolet >> 2002 >> Camaro Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P1352: Pcm Detects Open In Ignition Control Circuit >> Diagnostic Procedures

Diagnostic Procedures

  1. Did you perform the Diagnostic System Check-Engine Controls? If yes, go to next step. If no, see DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM.
  2. Observe the Freeze Frame/Failure Records for this DTC. Turn OFF the ignition for 30 seconds. Start the engine. Operate the vehicle within the Conditions for Running DTC, or within the parameters observed in the Freeze Frame/Failure Records. Does the DTC fail this ignition cycle? If yes, go to next step. If no, see INTERMITTENT CONDITIONS  under SELF-DIAGNOSTIC SYSTEM.
  3. Turn OFF the ignition. Disconnect the PCM. Turn ON the ignition. Probe the low reference circuit with a test lamp connected to battery positive voltage. Does the test lamp illuminate? If yes, go to step  6. If no, go to next step.
  4. Check the low reference circuit for an open. Did you find and correct the condition? If yes, go to step  12. If no, go to next step.
  5. Check for poor connections at ICM. Did you find and correct the condition? If yes, go to step  12. If no, go to step  7.
  6. Turn OFF the ignition. Connect the DMM between the IC and 3X low reference circuits. Turn ON the ignition. Probe the IC signal circuit with a test lamp connected to battery positive voltage. Does the voltage measure 150-250 mV? If yes, go to step  8. If no, go to next step.
  7. Turn OFF the ignition. Leave the PCM disconnected. Disconnect the ICM connector. Test for an open in the IC signal circuit. Did you find and correct the condition? If yes, go to step  12. If no, go to step  9.
  8. Inspect for poor terminal connections at the PCM. Did you find and correct the condition? If yes, go to step  12. If no, go to step  11.
  9. Inspect for poor terminal connections at the ICM. Did you find and correct the condition? If yes, go to step  12. If no, go to next step.
  10. Replace the ICM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article. After repairs, go to step  12.
  11. Replace the PCM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article. Reprogram PCM. See POWERTRAIN CONTROL MODULE  under PROGRAMMING. After repairs, go to next step.
  12. Clear the DTCs with a scan tool. Turn OFF the ignition. Start the engine. Operate the vehicle within the Conditions for Running DTC. Does the DTC run and pass? If yes, go to next step. If no, go to step  2.
  13. Observe the stored information, Capture Info with a scan tool. Does the scan tool display any DTCs that you have not diagnosed? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, system is okay.
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