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Navigation System Symptom Troubleshooting (cont'd) Display unit buttons do not work NOTE: loose terminals. • Before troubleshooting, get the navigation system anti-theft codes. • After troubleshooting, enter the navigation system anti-theft codes. 1 . Turn the ignition switch to ACC (I). 2. Go into the Diagnostic mode and use "Touch Panel" diagnostic under Monitor Check (see page and, if necessary, "Display" diagnostic under Unit ). Do the buttons work properly? YES—System is OK. NO—Go to step 3. 3. Measure the voltage between body ground and dis- play unit connector B (20P) terminal No. 1 and No. 2 DISPLAY UNIT CONNECTOR B (20P) +B Wire side of female terminals Is there battery voltage? YES—Go to step 4. NO—If the + B wire does not have voltage, repair the Main Menu Table of Contents |