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Home >> Chevrolet >> 1997 >> Corvette Standard >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Suspension - Electronic Real Time Damping >> Testing & Diagnosis >> DTC C1744: Loss Of Chassis Pitch Input

DTC C1744: Loss Of Chassis Pitch Input

  1. Perform RTD diagnostic system check. See RTD DIAGNOSTIC SYSTEM CHECK . After performing RTD system check, go to next step.
  2. Using scan tool, monitor chassis pitch status. If chassis pitch status is ACTIVE, go to next step. If chassis pitch status is not ACTIVE, go to step 4).
  3. Disconnect Powertrain Control Module (PCM) connector C1 (Red connector). Monitor chassis pitch status. If chassis pitch status is ACTIVE, go to step 5). If chassis pitch status is not ACTIVE, go to step 7).
  4. Turn ignition on. Using fused jumper wire, backprobe RTD control module connector C2, terminal C5 (Pink/White wire) to ground. Monitor chassis pitch status. If chassis pitch status is ACTIVE, go to step 8). If chassis pitch status is not ACTIVE, go to step 6).
  5. Check for short to ground in Pink/White wire (circuit No. 1101) and repair as necessary. See WIRING DIAGRAM . After repairs, go to step 10). If Pink/White wire is okay, go to step 9).
  6. Check for open in Pink/White wire (circuit No. 1101) and repair as necessary. See WIRING DIAGRAM . After repairs, go to step 10). If Pink/White wire is okay, go to next step.
  7. Check PCM for proper operation. See OBD SYSTEMS CHECK in TESTS W/CODES article. After repairs, go to step 10). If PCM is functioning properly, go to step 9).
  8. Check chassis pitch circuit (circuit No. 1101, Pink/White wire) for an intermittent. See NOTES ON INTERMITTENTS  under SELF-DIAGNOSTICS. After repairs, go to step 10). If no problem was found, go to step 7).
  9. Replace RTD control module. See RTD CONTROL MODULE  under REMOVAL & INSTALLATION. After repairs, go to next step.
  10. Turn ignition off. Reinstall/reconnect all components/connectors. Using scan tool, clear all DTCs and perform RTD DIAGNOSTIC SYSTEM CHECK .
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