Navigation System Symptom Troubleshooting - Navigation cannot control A/C

Navigation cannot control A/C
NOTE:
  • Always check the connectors for poor connections or loose terminals.
  • Before troubleshooting get the navigation system anti-theft codes.
  • After troubleshooting, enter the navigation system anti-theft codes.
  • Verify that the correct navigation unit is installed for this model. Go into the Diagnostic Menu and use ‘‘Version''.
Is ‘‘Climate'' icon red?
YES -
Do the climate control system troubleshooting.■
NO -
Check for an open or short to ground between display unit connector A (5P) terminals No. 2, No. 3 No. 4 and climate control unit connector A (16P) terminals No. 16, No. 15, No. 8. If OK, check the climate control system for normal operation. If the climate control system works properly, substitute a known-good display unit and recheck.■