Instrument Cluster Diagnostic System Check
- Connect scan tool to Data Link Connector (DLC). DLC is located under left side of instrument panel. If scan tool powers up, go to next step. If scan tool does not power up, repair as necessary. See BODY CONTROL MODULES - MALIBU article.
- Turn ignition switch to RUN position. Using scan tool, attempt to communicate with Body Control Module (BCM), Powertrain Control Module (PCM), Electronic Brake Control Module and Sensing and Diagnostic Module (SDM). If scan tool communicates all modules, go to next step. If scan tool does not communicate with any modules, diagnose communications concern. See BODY CONTROL MODULES - MALIBU article.
- Using scan tool, select DISPLAY DTCS function for BCM, PCM, EBCM and SDM. If any DTCs exist, go to next step. If no DTCs exist, repair by symptom. See SYMPTOM INDEX table under SYSTEM TESTS.
- If scan tool displays DTCs U1000-U1305, repair these DTCs first. See BODY CONTROL MODULES - MALIBU article. If scan tool does not display DTCs U1000-U1305, go to next step.
- If scan tool displays DTCs B1000, B1369, B1374 or B1379, repair these DTC next. See BODY CONTROL MODULES - MALIBU article. If scan tool does not display DTCs B1000, B1369, B1374 or B1379, go to next step.
- If scan tool displays DTCs U2000-U2007, repair these DTC next. See DTC U2000-U2007: INVALID DATA OR SERIAL PERIPHERAL INTERFACE SERIAL DATA IN/OUT CIRCUIT VOLTAGE OUT OF RANGE under DIAGNSOTIC TESTS. If scan tool does not display DTCs U2000-U2007, go to next step.
- If scan tool displays DTCs P0560 or P0620, repair these DTC next. See appropriate GENERATOR & REGULATORS article in STARTING & CHARGING SYSTEMS. If scan tool does not display DTCs P0560 or P0620, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .