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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System With Traction Control System - BOSCH 5.3 >> Diagnostic Tests >> DTC C0239: TCS Spark Retard Monitoring Malfunction (CAMARO & Firebird) >> Diagnosis

DTC C0239: TCS Spark Retard Monitoring Malfunction (CAMARO & Firebird): Diagnosis

  1. Perform DIAGNOSTIC SYSTEM CHECK  under DIAGNOSIS & TESTING. Go to next step.
  2. Turn ignition off. Disconnect EBCM connector. Install Universal Pinout Box (J 39700) using Cable Adapter (J 39700-25) to EBCM harness connector only. Turn ignition on, engine off. Using DVOM, measure voltage between universal pinout box terminal No. 19 (Gray/Black wire) and ground. If voltage is greater than 10 volts, go to next step. If voltage is not greater than 10 volts, go to step  6 .
  3. Turn ignition off. Disconnect PCM connector C2. Turn ignition on, engine off. Using DVOM, measure voltage between universal pinout box terminal No. 19 (Gray/Black wire) and ground. If voltage is greater than one volt, go to next step. If voltage is less than one volt, go to step  5 .
  4. Repair short to voltage in Gray/Black wire between PCM and EBCM. After repairs, go to step  11 .
  5. Replace EBCM. See ELECTRONIC BRAKE CONTROL MODULE  under REMOVAL & INSTALLATION. After repairs, go to step  11 .
  6. Turn ignition off. Disconnect PCM connector C2. Using DVOM, measure resistance between universal pinout box terminals No. 15 (Black wire) and No. 19 (Gray/Black wire). If resistance is infinite, go to step  8 . If resistance is not infinite, go to next step.
  7. Repair short to ground in Gray/White wire between PCM and EBCM. After repairs, go to step  11 .
  8. Using DVOM, measure resistance between universal pinout box terminal No. 19 (Gray/Black wire) and PCM connector C2 terminal No. 53. If resistance is 0-5 ohms, go to step  10 . If resistance is not 0-5 ohms, go to next step.
  9. Repair open in Gray/White wire between PCM and EBCM. After repairs, go to step  11 .
  10. Diagnose PCM. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. After repairs, go to next step.
  11. Using scan tool, clear DTCs. Operate vehicle. If DTC does not reset, system is okay.
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