B2468

DTC B2468

Circuit Description

Internal error detection is determined inside the navigation radio. No external circuits are involved.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B2468 Navigation Display Unit Performance

Conditions for Running the DTC

* The navigation radio performs this test when it detects a power mode transition to one of the following:

- ACC
- ON

* The navigation radio does not set this DTC if B1327 or B1328 is current.

Conditions for Setting the DTC

The navigation radio is unable to write to memory and the test detects a computation error.

Action Taken When the DTC Sets

Any of the following may be observed:

* Black screen and the audio cannot be changed.
* The TV screen adjustment settings change to the default settings.
* The navigation screens may still be available.

Conditions for Clearing the DTC

The navigation radio is able to write to memory and there is no computation error when there is a power mode transition.

Diagnostic Aids

* This DTC may be stored as a history DTC with out affecting the operation of the module. If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.
* If this DTC is retrieved as both a current and history DTC, replace the module.

Test Description

Step 1 - Step 4:

The numbers below refer to the step numbers on the diagnostic table.
1. Determines if the malfunction is present.
2. Verifies that the DTC sets under normal operating conditions.