Malfunction Indicator Light Check
- Turn ignition switch to ON position. If MIL illuminates, go to next step. If MIL does not illuminate, see A-1: MALFUNCTION INDICATOR LIGHT INOPERATIVE under SYSTEM TESTS. If problem is found, repair as necessary and retest system for normal operation.
- Start engine. If MIL turns OFF, system is okay. If driveability problems are present, go to TROUBLE SHOOTING - NO CODES article. If MIL remains illuminated, check for DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES . If no DTC is stored in ECM memory and MIL is illuminated, see A-3: MALFUNCTION INDICATOR LIGHT INOPERATIVE & ENGINE DOES NOT START (ECM POWER & GROUND CIRCUIT CHECK) under SYSTEM TESTS. If problem is found, repair as necessary and retest system for normal operation.