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Symptom Troubleshooting Index

WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Troubleshoot the immobilizer system by the order of the priority shown:
    SYMPTOM TROUBLESHOOTING INDEX

    Order of Priority Symptom Possible cause
    1 Immobilizer indicator blinks after the ignition switch is turned to LOCK (0). Symptom troubleshooting (see Symptom Troubleshooting IMMOBILIZER INDICATOR BLINKS  ).
    2 Engine does not start with the programmed immobilizer key. Symptom troubleshooting (see ENGINE DOES NOT START WITH THE IMMOBILIZER KEY  ).
    3 Immobilizer indicator does not come on. Check the MIL indication.
    • If the MIL comes on, go to the PGM-Fl System MIL circuit troubleshooting (see MIL CIRCUIT TROUBLESHOOTING ).
    • If the MIL does not come on, replace the gauge control module.
    4 Immobilizer indicator does not go off. Symptom troubleshooting (see IMMOBILIZER INDICATOR DOES NOT GO OFF  ).
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