| Callout | Component Name |
|---|---|
| 1 | Park/Turn Signal Lamp - RF (LF Similar) |
| 2 | Cellular Antenna |
| 3 | Low Beam/High Beam Headlamp Assembly - LF (RF Similar) |
| 4 | Front Marker Lamp - LF (RF Similar) |
| 5 | Fog Lamp - LF (RF Similar) |
Begin the system diagnosis with the Diagnostic System Check - Navigation System . The Diagnostic System Check will provide the following information
- The identification of the control module(s) which command the system.
- The ability of the control module(s) to communicate through the serial data circuit.
- The identification of any stored diagnostic trouble codes (DTCs) and their status.
The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
The numbers below refer to the step numbers on the diagnostic table.
- 2: Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
- 3: The symptom list in Symptoms will determine the correct diagnostic procedure to use.
- 4: The presence of DTCs which begin with a U indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Install a scan tool. Turn ON the ignition, with the engine off. Does the scan tool power up? | Go to Step 2 | Go to Scan Tool Does Not Power Up in Data Link Communications |
| 2 | Attempt to establish communication with the following modules: The radio The CD changer The dash integration module (DIM) Does the scan tool communicate with the radio, the CD changer, or the DIM? | Go to Step 3 | Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications |
| 3 | Select the display DTC functions on the scan tool for the following modules: The radio The CD changer The dash integration module (DIM) Does the scan tool display any DTCs? | Go to Step 4 | Go to Symptoms - Navigation Systems |
| 4 | Does the scan tool display any DTCs which begin with "U"? | Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications | Go to Step 5 |
| 5 | Does the scan tool display DTC B1000, B1004, B1007, or B1009? | Go to Diagnostic Trouble Code (DTC) List in Body Control System | Go to Step 6 |
| 6 | Does the scan tool display DTC B1327? | Go to Diagnostic Trouble Code (DTC) List in Engine Electrical | Go to Diagnostic Trouble Code (DTC) List |
Diagnostic System Check - Navigation System
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Operating Conditions: Ignition ON/Engine OFF | |||
| 8 - Digit GM Part Number | Module Information 1 | Numeric | Varies |
| Calibration ID | Module Information 1 | Numeric | Varies |
| CD Type | CD Information | Audio | |
| Julianne Date of Build | Module Information 1 | Numeric | Varies |
| Navigation Database Software Level | Module Information 2 | Numeric | Varies |
| Navigation Hardware Level | Module Information 2 | Numeric | Varies |
| Navigation Software Level | Module Information 2 | Numeric | Varies |
| Phone | System Configuration | Present/Not Present | Not Present |
| PROM ID | Module Information 1 | Numeric | Varies |
| Year Module Built | Module Information 1 | Numeric | 2001 |
Scan Tool Data List
| DTC | Diagnostic Procedure | Module(s) |
|---|---|---|
| B2462 | DTC B2462 | Navigation Radio |
Diagnostic Trouble Code (DTC) List
The navigation radio receives the vehicle speed signal from the PCM through a dedicated circuit shared with the instrument cluster.
- The navigation radio must detect a power mode transition to ON.
- The radio does not set this DTC if B1327 or B1328 is current.
- The vehicle must drive for 4 km (2.5 mi) after receiving a GPS signal.
The navigation radio compares the vehicle speed signal from the PCM to the GPS location signal every second. If the GPS signal indicates that the vehicle has traveled 4 km (2.5 mi) but no vehicle speed signal was received, the radio sets the DTC.
The navigation radio uses the GPS signal when the vehicle speed signal from the PCM is unavailable.
The following symptoms may happen if the vehicle speed signal from the PCM is unavailable
- The vehicle icon may jump to different positions on the map screen.
- The vehicle icon, current position marker may not move on the map screen while the vehicle is being driven.
- The route guidance accuracy may be degraded.
- A current DTC clears when the navigation radio detects the vehicle speed signal from the PCM for more than one second.
- A history DTC clears after 50 ignition cycles without a vehicle speed signal failure.
An intermittent condition may be caused by the following
- Mis-routed harness
- Rubbed through wire insulation
- Broken wire inside the insulation
- A loose connector pin
The numbers below refer to the step numbers on the diagnostic table.
- 1: Determines if the malfunction is present.
- 3: Tests for an open in the vehicle speed signal circuit between the instrument cluster and the navigation radio. A short would cause the instrument cluster to malfunction as well as the navigation system.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Navigation System Schematics | |||
| 1 | Did you perform the Diagnostic System Check - Navigation System? | Go to Step 2 | Go Diagnostic System Check - Navigation System |
| 2 | Verify the instrument cluster speedometer operation. Does the speedometer work on the instrument cluster? | Go to Step 3 | Go to Diagnostic Starting Point - Instrument Panel, Gages and Console in Instrument Panel, Gages and Console |
| 3 | Test the vehicle speed signal circuit for an open between the instrument cluster and the navigation radio. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 6 | Go to Step 4 |
| 4 | Inspect for poor connections at the harness connector of the navigation radio. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 6 | Go to Step 5 |
| 5 | Replace the navigation radio. Refer to Radio Replacement in Entertainment. Did you complete the replacement? | Go to Step 6 | |
| 6 | Use the scan tool in order to clear the DTC. Drive the vehicle at least 4 km (2.5 mi) with the GPS signal received. Leave vehicle running and retrieve DTCs. Does the DTC reset? | Go to Step 2 | System OK |
DTC B0004
The global positioning system (GPS) antenna is connected to the navigation radio by a coaxial cable.
The radio must detect one of the following power modes
- ACC
- ON
- RAP
- RAP UNLK
DTC B2462 does not set if DTC B1328 or B1327 is current.
The navigation radio test the GPS antenna every 0.3 second.
The radio determines there is an open in the GPS antenna.
DTC B2462 does not set if DTC B1328 or B1327 is current.
Unable to get GPS location updated, the radio uses the last reported position and the vehicle speed signal to calculate the vehicle position.
Route guidance may be inaccurate.
This failure has no effect outside the navigation system.
- A current DTC clears when the radio does not detect the failure for more than 10 seconds.
- A history DTC clears after 50 ignition cycles with no repeat of the failure.
An intermittent condition may be caused by the following
- Mis-routed harness
- Rubbed through wire insulation
- Broken wire inside the insulation
The numbers below refer to the step numbers on the diagnostic table.
- 1: Determines if the malfunction is present.
- 3: Determines if the malfunction is due to an internal fault in the navigation radio or a GPS antenna failure.
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Navigation System Schematics | ||||
| 1 | Did you perform Diagnostic System Check - Navigation System ? | Go to Step 2 | Go to Diagnostic System Check - Navigation System | |
| 2 | Turn OFF the ignition. Disconnect the GPS coaxial cable connector. Measure the voltage between the center conductor and the shield of the coaxial cable still attached to the navigation radio. Is the voltage within the specified range? | 4.0-5.5 V | Go to Step 5 | Go to Step 3 |
| 3 | Test the GPS cable for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 7 | Go to Step 4 | |
| 4 | Inspect for poor connections at the harness connector of the GPS cable. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 7 | Go to Step 6 | |
| 5 | Replace the GPS antenna. Refer to Antenna Replacement - Global Positioning System (GPS) . Did you complete the replacement? | Go to Step 7 | ||
| 6 | Replace the navigation radio. Refer to Radio Replacement in Entertainment. Did you complete the replacement? | Go to Step 7 | ||
| 7 | Use the scan tool in order to clear the DTC. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset? | Go to Step 2 | System OK | |
DTC B2462
| IMPORTANT | The following steps must be completed before using the symptom tables. |
- Perform the «Diagnostic System Check - Navigation System»(/buick/rendezvous/i-2001-2007/remont/navigation-system/#navigation-systems) before using the Symptom Tables in order to verify that all of the following are true: There are no DTCs set. The control module(s) can communicate via the serial data link.
- Review «Navigation System Description and Operation»(/buick/rendezvous/i-2001-2007/remont/navigation-system/#navigation-systems__navigation-system-description-and-operation) in order to familiarize yourself with the system functions.
- Inspect for aftermarket devices which could affect the operation of the navigation system components. Refer to «Checking Aftermarket Accessories»(/buick/rendezvous/i-2001-2007/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures__checking-aftermarket-accessories) in Wiring Systems.
- Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Navigation System Schematics | ||||
| DEFINITION: When using the navigation system, the GPS icon does not appear on the navigation radio. | ||||
| 1 | Did you perform the Diagnostic System Check - Navigation System ? | Go to Step 2 | Go to Diagnostic System Check - Navigation System | |
| 2 | Move the vehicle to an open area outside of the building. Turn ON the ignition. The Navigation screen appears on the navigation radio. The display should show the current position of the vehicle. The global positioning system (GPS) icon should appear green on the upper left corner of the screen, indicating that the navigation system has proper GPS reception. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | |
| 3 | Leave the vehicle outside with the ignition ON or set to ACC for 30 minutes. Examine the navigation display for the GPS icon, indicating that the vehicle has GPS reception. Does the system have GPS reception? | Go to Step 9 | Go to Step 4 | |
| 4 | Inspect the front window glass for tinting or any other alterations or obstructions. Is the front window glass OK? | Go to Step 6 | Go to Step 5 | |
| 5 | Remove the front window glass tinting or other alterations. Did you complete the repair? | Go to Step 9 | ||
| 6 | Test the GPS antenna line for resistance between the center conductor and the outer shield. Does the resistance measure near the specified value? | 200 ohms | Go to Step 8 | Go to Step 7 |
| 7 | Replace the GPS antenna. Refer to Antenna Replacement - Global Positioning System (GPS) . Did you complete the replacement? | Go to Step 9 | Go to Step 7 | |
| 8 | Replace the navigation radio. Refer to Radio Replacement in Entertainment. Did you complete the replacement? | Go to Step 9 | ||
| 9 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 | |
No Global Positioning System (GPS) Reception
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Navigation System Schematics | |||
| DEFINITION: When using the navigation system, the vehicle position indicator does not operate or is erratic. | |||
| 1 | Did you perform the Diagnostic System Check - Navigation System? | Go to Step 2 | Go to Diagnostic System Check - Navigation System |
| 2 | Start the vehicle and press the NAV button to switch to the navigation screen. Drive the vehicle for longer than 15 seconds with the speed above 15 mph. Monitor the vehicle position indicator. Does the vehicle position indicator operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Test the Vehicle Speed Signal circuit for an open. Did you find and correct the condition? | Go to Step 6 | Go to Step 4 |
| 4 | Inspect for poor connections at the harness connector of the navigation radio. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 6 | Go to Step 5 |
| 5 | Replace the navigation radio. Refer to Radio Replacement in Entertainment. Did you complete the replacement? | Go to Step 6 | |
| 6 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
Navigation System - Vehicle Position Indicator Inoperative or Erratic
- Remove the radio from the instrument panel (IP) in order to disconnect the GPS antenna connection at the radio. Refer to «Radio Replacement»(/buick/rendezvous/i-2001-2007/remont/entertainment-systems/#entertainment-system) in Entertainment.
- Remove the IP upper trim pad. Refer to «Trim Pad Replacement - Instrument Panel (I/P) Upper (Aztek)»(/buick/rendezvous/i-2001-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) or «Trim Pad Replacement - Instrument Panel (I/P) Upper (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
- Remove the HVAC module. Refer to «HVAC Control Module Replacement»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#hvac-systems-automatic) in HVAC Systems - Automatic.
- Remove the electrical connectors (1) from the retainer in order to gain access to the GPS antenna retaining clips. IMPORTANT: Note the GPS antenna cable routing in order to route the GPS antenna cable properly during assembly.
- Remove the antenna cable hold down clips.
- Remove the bracket (1) securing the GPS antenna assembly.
- Tie a string to the radio end of the antenna to aid in the reinstallation.
- Remove the GPS antenna (1) through the top of the IP.
- Untie the string from the old antenna.
- Tie the string to the new antenna.
- Route the GPS antenna cable as noted during disassembly.
- Install the clips (2) in order to secure the cable to the IP.
- Install the GPS antenna bracket (1).
- Install the electrical connectors to the IP retainer.
- Install the HVAC module. Refer to «HVAC Control Module Replacement»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#hvac-systems-automatic) in HVAC Systems - Automatic.
- Install the IP upper trim pad. Refer to «Trim Pad Replacement - Instrument Panel (I/P) Upper (Aztek)»(/buick/rendezvous/i-2001-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) or «Trim Pad Replacement - Instrument Panel (I/P) Upper (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
- Install the radio. Refer to «Radio Replacement»(/buick/rendezvous/i-2001-2007/remont/entertainment-systems/#entertainment-system) in Entertainment.
| Navigation Display Head | |
|---|---|
| Controls | Function |
| Power | Push PWR/VOL knob to turn the radio on. |
| NAV | Displays the map guidance screen. |
| NAV RPT | Repeats the last voice guidance message. |
| SETUP | Displays the setup function for the Navigation Radio. |
| Scroll/Select knob | Push to display menu/Turn to highlight selection/Push to select. |
| Soft Key Buttons | Push to select the options listed on the navigation screen. |
Navigation System Description and Operation
The navigation system contains the following components
- Navigation radio
- Global positioning system (GPS) antenna
This component acts as the operator interface for the audio system, provides the data input from the operator to the navigation system and provides navigation information to the operator via the display screen. The navigation radio, located in the center of the instrument panel, provides the following
- A display screen. All navigation and audio functions are displayed on this screen.
- The navigation system map with routing information displayed on the navigation radio screen.
- Audio system options and controls, displayed on the navigation radio screen.
- Provides verbal guidance to the operator.
- The DVD ROM provides the map data for navigation and map route guidance.
- Connection to the GPS antenna, which provides the vehicle position information.
The GPS antenna is located at the top center of the dash pad. The GPS Antenna is powered through the same coaxial cable used to send the signals to the navigation radio. The GPS antenna receives GPS data from the many satellites orbiting the earth and sends the signals to the navigation radio to be processed to derive current position information.
The GPS shows the current position of the vehicle. Tall buildings, large trucks, or a tunnel can obstruct GPS signals. Metallic objects on the dash can also cause interference. A GPS icon is located in the top left corner of the map display. If the GPS is valid, the icon will be green if not the icon will be gray. The GPS info screen will also show the condition of the GPS. If GPS reception in not received, it will show "out of range." If the reception is received, the coordinates of your location will be shown.
The map will display the route to the selected destination. Voice prompts alert the operator of upcoming events (turns) and arrivals at the destination. The navigation system will automatically recalculate if the route is not followed.
Points of interests are locations that are frequently visited. Points of interest can be displayed on the map or set as a destination. The following is a few of the available POI
- Gas station
- Restaurant
- Museum
- College
- Police
The map DVD is loaded in the DVD slot above the display screen. Music CDs may also be played in this location. While playing a music CD navigation and route guidance is not available. Replace the map DVD to resume navigation.
See also:
• Scan Tool Does Not Power Up
• Diagnostic Trouble Code (DTC) List
• Diagnostic Trouble Code (DTC) List
• Diagnostic Starting Point - Instrument Panel, Gages and Console
• Circuit Testing
• Wiring Repairs
• Testing for Intermittent Conditions and Poor Connections
• Connector Repairs
• Radio Replacement
• Checking Aftermarket Accessories
• Trim Pad Replacement - Instrument Panel (I/P) Upper (Aztek)
• HVAC Control Module Replacement
• Diagnostic System Check - Navigation System
• Diagnostic Trouble Code (DTC) List
• Navigation System Description and Operation
• No Global Positioning System (GPS) Reception
• Navigation System - Vehicle Position Indicator Inoperative or Erratic