Schematic Reference: Navigation System Schematics

DEFINITION: When playing a video input source connected to the auxiliary RCA video jacks, the video audio is inoperative, plays one side only or is degraded.

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

1. Turn ON the ignition. The Cadillac emblem screen appears on the navigation radio.
2. Leave the vehicle in PARK.
3. Press the audio MENU button on the radio. The audio menu appears on the display.
4. Press the TV button on the radio audio menu screen. This button is present with UE7 only.
5. Select a TV station. The TV should be clear on the radio display.
6. Connect a VCR to the auxiliary RCA video jacks.
7. Select AUX VIDEO under the TV SELECTIONS menu options.
8. Observe the display. The VCR selection should appear on the radio. The picture and audio should be clear.

Does the system operate normally?

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

Go to Step 3

Operate the TV function of the navigation system.

Does the audio for the TV function operate with good quality?

Go to Step 4

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

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 10

Go to Step 5

Test for a short from the auxiliary audio left signal circuit to the auxiliary audio right signal circuit. 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 10

Go to Step 6

Inspect for poor connections at the harness connector of the auxiliary RCA video jacks. 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 10

Go to Step 7

Replace the auxiliary RCA video jacks. Refer to Audio/Video Wiring Harness Replacement .

Did you find and correct the condition?

Go to Step 10

Go to Step 8

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 10

Go to Step 9

Replace the navigation radio. Refer to Control Module References in Computer/Integrating Systems.

Did you complete the replacement?

Go to Step 10

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3