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Home >> Chevrolet >> 1998 >> Venture Base, Van Cargo Extended >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Tests W/Codes >> Diagnostic Trouble Codes >> DTC P1554 - Cruise Control Status Circuit >> Diagnostic Procedures

Diagnostic Procedures

  1. Perform POWERTRAIN ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK , then go to next step.
  2. Check if DTC P1662 is also set. If DTC P1662 is set, diagnose DTC first. If DTC P1662 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 is greater than 7 volts, go to next step. If voltage 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. Clear DTC P1554. Start engine and observe DTCs. If DTC P1554 resets, repeat step 2). If DTC P1554 is not set, repair is complete.
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