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Inspection and verification

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  1. Verify the customer concern.
  2. Confirm which, if any, warning lights and/or messages were displayed on the instrument cluster.
    NOTE: If any warning lights and/or messages were displayed when the fault occurred, refer to the Driver Information table for DTCs associated with the display, then to the DTC index table for possible sources and actions. Some warnings will appear to clear when the ignition is cycled. This is often because the warning has flagged as a result of one of the vehicle's on-board diagnostic routines having run to detect the fault. If the same routine is not run when the ignition is switched ON  , the warning will not reflag until the routine does run. See the DTC summaries for drive cycle routines.
  3. Visually inspect for obvious signs of mechanical or electrical damage.
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