B2463

CIRCUIT DESCRIPTION
The circuitry is internal to the navigation module (NAV).

CONDITIONS FOR RUNNING THE DTC
The navigation module (NAV) runs the DTC when a map CD is inserted into the NAV or when the NAV detects a transition from OFF-ASLEEP to ACC, ON or RAP.

DTC B2463 does not set if DTC B1328 or B1327 is current.

CONDITIONS FOR SETTING THE DTC
The navigation module (NAV) functions are activated with no navigation CD in the navigation module (NAV) CD slot.

DTC B2463 does not set if DTC B1328 or B1327 is current.

ACTION TAKEN WHEN THE DTC SETS
No map appears on the navigation display head (NDH) when the MAP/REPEAT button located beside the display is pressed.
^ The NO MAP CD INSERTED message appears on the navigation display head (NDH) screen.
^ The navigation buttons do not function.
^ This failure has no effect outside the system navigation functions.

CONDITIONS FOR CLEARING THE DTC
A current DTC clears when the navigation module (NAV) detects a navigation CD.

DIAGNOSTIC AIDS

IMPORTANT: If DTC B2465 is also set, service B2465 before servicing B2463.

Make sure the CD installed is a navigation system map CD defined for this system. Also be sure the label is on the top side of the installed CD.

TEST DESCRIPTION

Steps 1-5:

The number(s) below refer to the step number(s) on the diagnostic table.
1. Determines if the malfunction is present.
2. Determines if the malfunction was due to no map CD in the navigation module CD player.