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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P1381: Misfire Detected - No Communication With Brake Control Module >> 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, attempt to display ABS data. If ABS data is displayed, go to next step. If ABS data is not displayed, go to step  4.
  3. Check for open or poor connection in Light Blue wire to EBCM connector C1 terminal No. 25. See WIRING DIAGRAMS. Repair as necessary. After repairs, go to step  7. If circuit is okay, go to next step.
  4. Turn ignition off. Disconnect EBCM connector. Turn ignition on, with engine off. Using a DVOM check voltage on EBCM connector C1 terminal No. 25 (Light Blue wire). If voltage reading is 1-5 volts, go to next step. If voltage reading is not 1-5 volts, go to step  6.
  5. Check for poor connection at EBCM. Repair as necessary. After repairs, go to step  7. If connections are okay, go to next step.
  6. Check for open in Light Blue wire to EBCM. Repair as necessary. After repairs, go to next step. If circuit is okay, diagnose ABS system. See appropriate ANTI-LOCK article in BRAKES.
  7. Turn ignition on, with engine off. Using scan tool, attempt to display ABS data. If ABS data can be displayed, system is okay. If ABS data cannot be displayed, perform SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
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