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Home >> Isuzu >> 2007 >> Ascender 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> Symptoms - Navigation Systems >> Notes
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Symptoms - Navigation Systems: Notes

IMPORTANT: The following steps must be completed before using the symptom tables.
  1. Perform the Diagnostic System Check - Vehicle in Vehicle DTC Information before using the Symptom Tables in order to verify that all of the following are true:
    • There are no DTCs set.
    • The control modules can communicate via the serial data link.
  2. Review Navigation System Description and Operation  in order to familiarize yourself with the system functions.
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