Schematic Reference: Navigation System Schematics

Connector End View Reference: Entertainment Connector End Views

DEFINITION: The navigation voice guidance is inoperative (you can not hear voice commands), or the voice guidance volume is reduced or noisy.

Did you perform Diagnostic System Check - Navigation System?

Go to Step 2

Go to Diagnostic System Check - Navigation System

1. Turn ON the ignition with the engine OFF. The Cadillac emblem screen appears on the navigation radio.
2. Press the radio NAV button on the radio.
3. When the navigation disclaimer screen appears, press the I AGREE button on the display.
4. The display should show the current position of the vehicle. The navigation map should be clear and have clear color.
5. Plan a route by entering a destination. Select SIMULATION from the navigation menu. The voice commands should be clear and they should guide the route.

Does the system operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Turn ON the ignition with the engine OFF.
2. Make sure the voice guidance is turned on.
3. Make sure the audio level is adjusted to a high enough level to be heard.

Is the audio portion of the voice guidance system operational?

Go to Step 7

Go to Step 4

Test the following circuits for an open, a short to ground, or a short to voltage:

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 7

Go to Step 5

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 7

Go to Step 6

Replace the navigation radio. Refer to Radio Replacement in Entertainment.

Did you complete the replacement?

Go to Step 7

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Operate the system to verify the repair.

Did you correct the condition?

System OK

Go to Step 3