Navigation System Symptom Troubleshooting

Symptom | Diagnostic procedure | Also check for
--- | --- | ---
Navigation system stays on the GPS initialization screen | System Initialization |

- Navigation unit
- Wrong colored disc installed
- GPS antenna/cable
- Harness/fuses/switches

No picture is displayed | Troubleshooting |

- Navigation unit
- Aftermarket accessories connected to the system
- Display unit
- Harness/fuses/switches

Address cannot be found or system gives poor routing | Verify proper operation using the owner's manual | Wrong colored disc installed
Vehicle position icon constantly leaves road or is very far from actual position | Troubleshooting |

- Navigation unit
- GPS antenna/cable
- PCM (speed pulse missing)
- Harness/fuses/switches

Picture is missing a color or tone | Troubleshooting |

- Navigation unit
- Wrong colored disc installed
- Harness/fuses/switches
- Aftermarket accessories connected to the system

Picture has lines/rolls/other issues | Troubleshooting |

- Navigation unit
- Display unit
- Harness/fuses/switches

Display unit buttons or touch screen buttons do not work or respond properly | Troubleshooting |

- Display unit
- Wrong colored disc installed
- Harness/fuses/switches

GPS icon is white or not shown | Troubleshooting |

- Navigation unit
- Aftermarket accessories connected to the system
- GPS antenna/cable
- Harness/fuses/switches

Voice guidance cannot be heard | Troubleshooting |

- Navigation unit
- Audio unit/amplifier
- Volume or Voice feedback settings (see Owner's manual for details)
- Harness/fuses/switches

Voice control does not work/respond | Troubleshooting |

- Navigation unit
- Volume or Voice feedback settings (see Owner's manual for details)
- Microphone/steering buttons
- Harness/fuses/switches

DVD screen error messages | Troubleshooting |

- Navigation unit
- Wrong colored disc installed
- Display unit
- Damaged DVD disc

Navigation cannot control A/C | Troubleshooting |

- Display unit
- Wrong colored disc installed
- Wrong unit (model code)
- Harness/fuses/switches

Display day/night mode does not work | Troubleshooting |

- Display unit
- Display brightness set to ‘‘High''
- Gauge assembly (CAN)
- Harness/fuses/switches

System locks up constantly | Troubleshooting |

- Navigation unit
- Harness/fuses/switches
- Wrong colored disc installed
- Damaged DVD disc

Vehicle icon wanders across the map when driving (does not follow a displayed road) or spins when driving | Troubleshooting |

- Navigation unit
- Wrong colored disc installed
- Damaged DVD disc

Navigation drives by itself when parked | Troubleshooting |
Navigation stays on with ignition switch off | Troubleshooting |

- Harness/fuses/switches
- Aftermarket accessories connected to the system

Navigation cannot control audio/CD | Troubleshooting |

- Display unit
- Wrong colored disc installed
- Audio unit/amplifier

Audio-HVAC subdisplay does not work properly | Troubleshooting |

- Navigation unit
- Subdisplay unit
- Harness/fuses/switches

Time is not correct | Reset Time Adjustment in set-up |
Navigation frequently asks for code and needs GPS initialization | Troubleshooting |

- Navigation unit
- Low battery
- Harness/fuses/switches

Poor RDS-TMC Reception or Interference | Troubleshooting |
Some set-up and information functions of the navigation system do not work | Customer did not select ‘‘OK'' from Disclaimer screen. |
Previous Destinations button is dim and not selectable in the Enter destination by screen | The vehicle may be new, or the customer deleted the destination. Enter a destination, and allow the system to route to it. After the trip, the Previous Destinations button will be selectable. | Owner's manual for details
Today's Destinations button is dim and not selectable in the Enter destination by screen | The customer has not entered a group of locations for Today's Destinations. This is normal. The button is only selectable if the customer is using this function. | Owner's manual for details
The navigation system will not Map Match | Refer to troubleshooting for Vehicle icon wanders across the map when driving |