Schematic Reference: Navigation System Schematics

Did you perform Diagnostic System Check - Navigation System ?

Go to Step 2

Go to Diagnostic System Check - Navigation System

1. Turn ON the ignition. The Cadillac emblem screen appears on the navigation display head (NDH).
2. Press the NAV MENU button on the NDH.
3. When the navigation disclaimer screen appears, press the I AGREE button on the display.
4. Press the MAP/REPEAT button on the NDH. The display should show the current position of the vehicle. The navigation map should be clear and have clear color.
5. Press the NAV MENU button on the NDH. Select voice guidance under the navigation main menu.
6. Test drive the vehicle. 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

Test the audible chime operation. The audible warnings should operate with a good tone and volume.

Do the audible warnings operate correctly?

Go to Step 4

Go to Diagnostic System Check - Audible Warnings

Adjust the voice guidance system using the navigation menu. Set the system at near midpoint for this test.

Does the voice guidance system operate with the setting adjusted near midpoint?

Go to Step 9

Go to Step 5

Test the following circuits for an open or a short.

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 6

Inspect for poor connections at the harness connector of the 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 9

Go to Step 7

Inspect for poor connections at the harness connector of the navigation module (NAV). 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 9

Go to Step 8

Replace the navigation module (NAV). Refer to Navigation Data Processor Replacement in Entertainment.

Did you complete the replacement?

Go to Step 9

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3