Pinpoint Test R: The Display Screen Is Inoperative

Information and Entertainment System

Pinpoint Tests

Pinpoint Test R: The Display Screen Is Inoperative

Normal Operation

The display screen shows all of the audio system information, including radio tuner (AM/FM), navigation, and satellite radio information (if equipped). The display is completely controlled by the Audio Control Module (ACM).

This pinpoint test is intended to diagnose the following:
- Audio system concern
- ACM



PINPOINT TEST R: THE DISPLAY SCREEN IS INOPERATIVE

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R1 VERIFY THE OPERATION OF THE RADIO TUNER SYSTEM


- Ignition ON.
- Operate the audio system in radio tuner (AM/FM) mode.
- Does the audio system operate correctly in radio tuner (AM/FM) mode?

Yes
GO to R2.

No
GO to Symptom Chart - Navigation. Symptom Related Diagnostic Procedures

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R2 CHECK FOR CORRECT ACM OPERATION


- Ignition OFF.
- Disconnect all the ACM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the ACM connectors and make sure they seat correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?

Yes
INSTALL a new ACM. REFER to Audio Control Module (ACM) Removal and Replacement. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

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