Inspection and Verification

Information and Entertainment System

Inspection and Verification

1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart:

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

4. NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).

5. NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM:

- Check the VCM connection to the vehicle.

- Check the scan tool connection to the VCM.

- Refer to Information Bus, No Power To The Scan Tool, to diagnose no power to the scan tool.

6. If the scan tool does not communicate with the vehicle:
- Verify the ignition key is in the ON position.

- Verify the scan tool operation with a known good vehicle.

- Refer to Information Bus to diagnose no response from the PCM.

7. Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to Information Bus.

- If the network test passes, retrieve and record the continuous memory DTCs.

8. If the DTCs retrieved are related to the concern, go to DTC Charts. [1][2]Diagnostic Trouble Code Descriptions

9. If no DTCs related to the concern are retrieved, go to the Speaker Walk-Around Test (All Audio Systems Except Navigation), the Audio Control Module (ACM) Self-Diagnostic Mode (All Audio Systems Except Navigation), the Audio Control Module (ACM) Self-Diagnostic Mode - Navigation, or the Satellite Audio Bezel Diagnostic Test.

Speaker Walk-Around Test (All Audio Systems Except Navigation)

NOTE: To enter the speaker walk-around test or ACM self-diagnostic mode, the ACM must be on and in radio tuner (AM/FM) mode.

1. To enter the speaker walk-around test, simultaneously press the ACM preset buttons 3 and 6.

2. The speaker walk-around test stops at each speaker and applies sound to each speaker for about 1-2 seconds. Each speaker is tested and displayed on the ACM in the following sequence: RF, LF, LR, RR, and SUBWOOFER.

3. To exit the speaker walk-around test, turn the key to OFF, turn the ACM off, or press preset button 1 for diagnostics (DIA).

Audio Control Module (ACM) Self-Diagnostic Mode - All ACM Without Navigation

NOTE: To enter the ACM self-diagnostic mode, the ACM must be turned on and in radio tuner (AM/FM) mode.

1. To enter the following tests, press the desired preset button while in the speaker walk-around test or while in the ACM self-diagnostic mode.

2. The self-diagnostic mode has the following functions available:
- Preset button 1 = On-Demand Self-Test. This button runs the on-demand self-test.
- Pressing the MENU DOWN button allows scrolling of any DTCs found during the test while in this menu.

- Preset button 2 = Display Continuous DTCs. This button enables viewing of any continuous DTCs that have been logged.
- Pressing the MENU UP button allows scrolling of any DTCs while in this menu.

- While continuous DTCs are being displayed, pressing the EJECT button clears all present DTCs. The key must be cycled OFF, then ON, to permanently clear DTCs. For steering wheel control switch DTCs, any steering wheel control switch must be pressed prior to pressing EJECT.

- Preset button 3 = Signal Strength Test. This button displays the signal strength.

- Preset button 4 = Software Version Display. This button displays the ACM software version.
- Pressing the MENU UP button allows scrolling of all audio subsystem software versions while in this menu.

- Preset button 5 = Display Test. This test illuminates all the display segments for 5 seconds, then either turns all segments off or indicates DISPLAY TEST on the screen.

- Preset button 6 = Configuration Status. This button enables ACM configuration status.
- Pressing the MENU button displays the ACM part number while in this menu.

3. To exit the self-diagnostic mode, turn the ACM off or turn the key to OFF.

4. If the concern remains and the fault is not detected, GO to Symptom Chart - Audio System to continue diagnostics. Symptom Related Diagnostic Procedures

Audio Control Module (ACM) Self-Diagnostic Mode - Navigation ACM

The navigation system provides internal self-diagnostics to assist with diagnosing vehicle concerns.

Press and hold preset buttons 3 and 6 simultaneously for 3 seconds.

Press the End Test button on the screen to exit the speaker walk test.





The following diagnostics are available using the on-screen buttons as follows:





- On Demand Self Test: provides internal self-test diagnostics and displays all the DTCs resulting from the self-test.
- View DTC's: provides a list of all the DTCs currently stored in memory.
- Configuration Status: displays the current ACM configuration.
- System Info: displays the navigation ACM part number and software information.
- GPS Info: provides satellite and current vehicle information.
- Speaker Walk Test: carries out a speaker walk-around test.
- Multi-disc Test: checks the status of the CD player mechanism.
- Display Test: allows the screen colors to be checked, and allows testing of individual display screen touch sectors.
- Hardkey Test: provides the status (active/not active) of the ACM buttons and touch screen.
- Radio Signal Strength: carries out a test of the antenna signal.
- Exit Diagnostics: exits diagnostics and returns to the main navigation screen.

1. If the concern remains and the fault is not detected, GO to Symptom Chart - Navigation to continue diagnostics. Symptom Related Diagnostic Procedures

Satellite Audio Bezel Diagnostic Test

NOTE: To enter the satellite audio bezel diagnostic test, the audio system must be on and in SAT mode.

1. To enter the satellite audio bezel diagnostic test, simultaneously press and hold the AUX button and preset button 2 (except navigation), or SOUND and preset button 1 (navigation).

2. Upon entering the self-test, the audio system produces 2 continuously alternating tones of different pitch, one for the right channel, then one for the left.

3. The test continues by displaying any DTCs currently present. If no DTCs are present, NO DTCS is displayed. If there are DTCs present, the ACM auto-scrolls through the list of active DTCs.

4. Historical DTCs can be viewed by pressing the AUX button and preset button 2 (except navigation), or SOUND and preset button 1 (navigation) simultaneously while in the active DTC mode.
- If any DTCs are present, simultaneously pressing the AUX button and preset button 2 (except navigation), or SOUND and preset button 1 (navigation) prompts CLEAR DTCS? on the display.

- To clear historical DTCs, press preset buttons 1, 2, and 3 consecutively within 4 seconds.

- To exit historical DTCs (with or without clearing DTCs), press the AUX button and preset button 2 (except navigation), or SOUND and preset button 1 (navigation) simultaneously.

5. If no historical DTCs are present, pressing the AUX button and preset button 2 (except navigation), or SOUND and preset button 1 (navigation) simultaneously while in active DTC mode will display the DLP software version.

6. To exit the satellite audio bezel diagnostic test, press the AUX button and preset button 2 (except navigation), or SOUND and preset button 1 (navigation) simultaneously while the DLP (SDARS module) software version is displayed, or turn the ACM off.

7. If the concern remains and the fault is not detected, GO to Symptom Chart - Audio System. Symptom Related Diagnostic Procedures