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Instrument Cluster Diagnostic System Check

  1. Connect scan tool to Data Link Connector (DLC). See Figure. If scan tool powers up, go to next step. If scan tool does not power up, see TEST A: SCAN TOOL DOES NOT POWER UP  under SYSTEM TESTS.
  2. Turn ignition on. Try to establish communication with Instrument Panel Cluster (IPC), Powertrain Control Module (PCM), Electronic Brake Control Module (EBCM), inflatable restraint Sensing and Diagnostic Module (SDM), Dash Integration Module (DIM), Rear Integration Module (RIM), Instrument Panel Integration Module (IPM), Theft Deterrent Module, Driver's Door Module (DDM), Passenger Front Door Module (PFDM), Left Rear Door Module (LRDM) and Right Rear Door Module (RRDM). If scan tool communicates with all modules listed, go to next step. If scan tool does not communicate with all modules listed, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Select display DTCs function for each module listed in step  2. If any DTCs are set for any module listed, go to next step. If no DTCs are set for any module listed, try to diagnose by symptom. See SYSTEM TESTS in ANALOG & ELECTRONIC INSTRUMENT PANELS - DEVILLE article.
  4. If scan tool displays any DTCs that begin with "U", go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS. If scan tool does not display and DTCs that begin with "U", go to next step.
  5. If scan tool does not display DTC B1000, B1004, B1007, B1009, B1013, B1014, B1390, B1422, B1556, B1656 or B1658, go to next step. If scan tool displays DTC B1000, B1004, B1007, B1009, B1013, B1014, B1390, B1422, B1556, B1656 or B1658, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS .
  6. If scan tool displays DTC B1327, B1328, B1513, B1514, P0560, P0562, P0563, P0615, P0621 or P0622, See DIAGNOSTIC TROUBLE CODE DEFINITIONS in GENERATORS & REGULATORS - DEVILLE article in STARTING & CHARGING SYSTEMS. If scan tool does not display DTC B1327, B1328, B1513, B1514, P0560, P0562, P0563, P0615, P0621 or P0622, diagnose any other DTCs that are present. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
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