Circuit Description
The GPS antenna is connected to the navigation module (NAV) by a coaxial cable.
Conditions for Running the DTC
The NAV 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.
Conditions for Setting the DTC
The navigation module (NAV) test the GPS antenna every 10 seconds.
The NAV determines there is an open in the GPS antenna.
DTC B2462 does not set if DTC B1328 or B1327 is current.
Action Taken When the DTC Sets
Unable to get GPS location updated, the NAV 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.
Conditions for Clearing the DTC
| • | A current DTC clears when the NAV does not detect the failure for more than 10 seconds. |
| • | A history DTC clears after 50 ignition cycles with no repeat of the failure. |
Diagnostic Aids
An intermittent condition may be caused by the following:
| • | Mis-routed harness |
| • | Rubbed through wire insulation |
| • | Broken wire inside the insulation |
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
-
Determines if the malfunction is present.
-
Determines if the malfunction is due to an internal fault in the navigation module (NAV) or a GPS antenna failure.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Navigation System Schematics | ||||
Did you perform Diagnostic System Check - Navigation System ? | -- | Go to Step 2 | ||
2 |
Is the voltage within the specified range? | 4.0-5.5 V | Go to Step 5 | Go to Step 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 Global Positioning System (GPS) Antenna Replacement . Did you complete the replacement? | -- | Go to Step 7 | -- |
6 | Replace the navigation module (NAV). Refer to Navigation Data Processor Replacement . Did you complete the replacement? | -- | Go to Step 7 | -- |
7 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
