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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P1361: Pcm Does Not Monitor Ignition Control Pulses >> Diagnostic Procedures

Diagnostic Procedures

  1. If powertrain diagnostic system check was performed, go to next step. If powertrain diagnostic system check was not performed, go to POWERTRAIN DIAGNOSTIC SYSTEM CHECK  under DIAGNOSTIC SYSTEM CHECKS. After performing powertrain diagnostic system check, go to next step.
  2. Turn ignition on, with engine off. Using scan tool, monitor the DTC information for DTC 1362. If scan tool indicates that DTC P1362 is current, go to step  6. If scan tool does not indicate that DTC P1362 is current, go to next step.
  3. Observe the FREEZE FRAME/FAILURE RECORDS for this DTC. Turn ignition off for 30 seconds. Start engine. Operate vehicle within the conditions for running the DTC or within the parameters observed in FREEZE FRAME/FAILURE RECORDS. f this DTC fails this ignition cycle, go to next step. If this DTC does not fail this ignition cycle, go to DIAGNOSTIC AIDS .
  4. Turn ignition off. Disconnect PCM connector. Turn ignition on. Using a test light connected to battery voltage, probe PCM connector C1 terminal No. 54 (White wire). See Figure. If test light illuminates, go to next step. If test light does illuminate, go to step  14.
  5. Turn ignition off. Leave PCM connector disconnected. Disconnect ICM connector. Turn ignition on. Using test light connected to ground, probe PCM connector C1 terminal No. 54 (White wire). If test light illuminates, go to step  10. If test light does not illuminate, go to step  13.
  6. Turn ignition off. Disconnect PCM connector. Disconnect ICM connector. Using test light connected to battery voltage, probe ICM connector terminal "A" (White wire). See Figure. If test light illuminates, go to step  11. If test light does not illuminate, go to next step.
  7. Leave ICM and PCM connectors disconnected. Using test light connected to battery voltage, probe ICM connector terminal "A" (White wire). If test light illuminates, go to step  12. If test light does not illuminate, go to next step.
  8. Check for short between ICM connector terminals "A" (White wire) and "B" (Tan/Black wire) circuits. Repair as necessary. After repairs, go to step  15. If circuits are okay, go to next step.
  9. Reconnect ICM connector. Leave PCM connector disconnected. Turn ignition on. Connect DVOM between a known-good ground and ICM connector terminal "A" (White wire). Connect test light to battery voltage and probe ICM connector terminal "B" (Tan/Black wire). If voltage toggles between 20-40 millivolts to 150-250 millivolts, go to step  14. If voltage does not toggle between 20-40 millivolts to 150-250 millivolts, go to step  13.
  10. Repair short to voltage in White wire between ICM and PCM. After repairs, go to step  15.
  11. Repair short to ground in White wire between ICM and PCM. After repairs, go to step  15.
  12. Repair short to ground in Tan/Black wire between ICM and PCM. After repairs, go to step  15.
  13. Replace ICM. After replacing module, go to step  15.
  14. Replace PCM. Perform PCM relearn procedure. See POWERTRAIN CONTROL MODULE PROGRAMMING  under PROGRAMMING. After replacing PCM, go to next step.
  15. Using scan tool, clear DTCs. Turn ignition off for at least 30 seconds. Start engine and allow it to reach normal operating temperature. Operate vehicle within conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, go to step  2.
  16. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no undiagnosed DTCs are displayed, system is okay.
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