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Home >> Chevrolet >> 2000 >> Venture Value >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> DTC P1554: Cruise Control Feedback Circuit >> Diagnostic Procedures
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Diagnostic Procedures

  1. Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC SYSTEM CHECK . After performing OBD system check, go to next step.
  2. Check if DTC P1585 is also set. If DTC P1585 is set, go to DTC P1585: CRUISE CONTROL INHIBIT OUTPUT CIRCUIT . If DTC P1585 is not set, go to next step.
  3. Turn ignition off. Disconnect cruise control module. Turn ignition on. Using a DVOM, check cruise control status circuit at cruise control module harness connector and ground. If voltage reading is greater than 7 volts, go to next step. If voltage reading is not greater than 7 volts, go to step  5.
  4. Turn ignition off. Reconnect cruise control module harness connector. Disconnect PCM harness connector. Turn ignition on. Using a test light connected to battery voltage, probe cruise engaged status circuit at PCM harness connector. If test light illuminates, go to step  6. If test light does not illuminate, go to step  7.
  5. Turn ignition off. Disconnect PCM harness connector. Using a test light connected to battery voltage, probe cruise engaged status circuit at PCM harness connector. If test light illuminates, go to step  8. If test light does not illuminate, go to step  7.
  6. Replace cruise control module. After replacing cruise control module, go to step  9.
  7. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to step  9.
  8. Locate and repair short to ground in cruise control status circuit. After repairs, go to next step.
  9. Using scan tool, clear DTCs. Start engine and observe DTCs. If this DTC resets, repeat step  2. If this DTC does not reset, system is okay.
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