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Mil On Steady

  1. Perform On-Board Diagnostic II (OBD-II) System Check. See ON-BOARD DIAGNOSTIC II (OBD-II) SYSTEM CHECK in SELF-DIAGNOSTICS - INTRODUCTION article. After performing OBD-II system check, go to next step.
  2. Turn ignition off. Disconnect PCM electrical connectors. Turn ignition on. If MIL comes on, go to next step. If MIL does not come on, go to step  5.
  3. Turn ignition off. Disconnect instrument panel cluster connector. Check for short to ground in MIL control circuit (White/Green wire) between PCM 32-pin Red connector terminal A13 and instrument panel cluster. Repair as necessary. Repeat OBD-II system check. See ON-BOARD DIAGNOSTIC II (OBD-II) SYSTEM CHECK in SELF-DIAGNOSTICS - INTRODUCTION article. If circuit is okay, go to next step.
  4. Replace instrument panel cluster. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. Repeat OBD-II system check.
  5. Turn ignition off. Reconnect PCM electrical connectors. Turn ignition on. Reprogram PCM. See PROGRAMMING . Using TECH II scan tool, command MIL OFF. If MIL did not go off, go to next step. If MIL did go off, repeat OBD-II system check.
  6. Replace and reprogram PCM. Repeat OBD-II system check. See ON-BOARD DIAGNOSTIC II (OBD-II) SYSTEM CHECK in SELF-DIAGNOSTICS - INTRODUCTION article.
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