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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 C0244 Or DTC P1689: PWM Delivered Torque Malfunction >> Diagnosis

DTC C0244 Or DTC P1689: PWM Delivered Torque Malfunction: Diagnosis

  1. Perform DIAGNOSTIC SYSTEM CHECK  under DIAGNOSIS & TESTING. Go to next step.
  2. Check PCM and EBCM grounds for damaged, loose or corroded connections. See GROUND DISTRIBUTION article in WIRING DIAGRAMS. If problem was found, repair as necessary. After repairs, go to step  12 . If problem was not found, go to next step.
  3. Install scan tool. Select display DTC function on scan tool for PCM. If scan tool displays DTC P1571, see DTC C0241 OR P1571: PCM INDICATED REQUESTED TORQUE MALFUNCTION (CAMARO, FIREBIRD & INTRIGUE)  . If scan tool does not display DTC P1571, go to next step.
  4. Start engine. Using scan tool, observe PCM-to-EBCM DELIVERED parameter in PCM data list. If scan tool displays 90 percent, go to next step. If scan tool does not display 90 percent, see INTERMITTENTS & POOR CONNECTIONS  under DIAGNOSIS & TESTING.
  5. Turn ignition off. Disconnect PCM connector C2. Disconnect EBCM connector. Install Universal Pinout Box (J 39700) using Cable Adapter (J 39700-25) to EBCM harness connector and EBCM. Turn ignition on, with engine off. Using DVOM, measure voltage between universal pinout box terminals No. 9 (Tan/Black wire) and No. 15 (Black wire for Camaro and Firebird, or Black/White wire for Grand Prix and Intrigue). If voltage is equal to battery voltage, go to next step. If voltage is not equal to battery voltage, go to step  7 .
  6. Turn ignition off. Disconnect cable adapter from EBCM. Turn ignition on, engine off. Check delivered torque signal circuit for short to voltage. If problem was found, repair as necessary. After repairs, go to step  12 . If problem was not found, go to step  8 .
  7. Turn ignition off. Disconnect cable adapter from EBCM connector. Check delivered torque signal circuit for open, short to ground or high resistance. If problem was found, repair as necessary. After repairs, go to step  12 . If problem was not found, go to step  9 .
  8. Check PCM connector for poor connections. If problem was found, repair as necessary. After repairs, go to step  12 . If problem was not found, go to step  10 .
  9. Check EBCM connector for poor connections. If problem was found, repair as necessary. After repairs, go to step  12 . If problem was not found, go to step  11 .
  10. Replace PCM. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. After repairs, go to step  12 .
  11. Replace EBCM. See ELECTRONIC BRAKE CONTROL MODULE  under REMOVAL & INSTALLATION. After repairs, go to next step.
  12. Using scan tool, clear DTCs. Operate vehicle. If DTC does not reset, system is okay.
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