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Malfunction Indicator Light Check

  1. 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.
  2. Start engine. If MIL turns OFF, system is okay. If driveability problems are present, go to INTERMITTENTS in TROUBLE SHOOTING - NO CODES article. If MIL remains illuminated, check for DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES  . If no DTC is stored in ECM (PCM) memory and MIL is illuminated, see A-2: MALFUNCTION INDICATOR LIGHT REMAINS ON  under SYSTEM TESTS. If problem is found, repair as necessary and retest system for normal operation.
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