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 the fault is not visually evident, proceed to the Speaker Walk-Around Test and the Audio Unit Self-Diagnostic Mode.

Speaker Walk-Around Test

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

1. To enter the speaker walk-around test, simultaneously press the audio unit 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 audio unit in the following sequence: RF, LF, LR, RR, subwoofer I, subwoofer II (subwoofer II is not available on this vehicle).

Audio Unit Self-Diagnostic Mode

NOTE: The audio unit self-diagnostic mode will automatically begin once the speaker walk-around test is complete.

1. The audio unit self-diagnostic mode has 6 tests available:
- Preset button 1 = Audio internal/external SELF TEST. This test is an on-demand self-test. If SELF FAIL is displayed, press TUNE > to scroll through the DTCs stored. Refer to DTC Charts. If the system is OK, SELF PASS is displayed. [1][2]Diagnostic Trouble Code Descriptions

- Preset button 2 = View/Clear continuous DTCs. NO DTCS is displayed if no DTCs are retrieved. If DTCs FOUND is displayed, press TUNE > to view the DTCs retrieved. Refer to DTC Charts. To clear all DTCs, press the EJECT button. DTCS CLEAR is displayed. [1][2]Diagnostic Trouble Code Descriptions

- Preset button 3 = SIGNAL TEST. This test measures the average strength at the current tuner setting.

- Preset button 4 = Software configuration level. This test queries each radio system controller for its software configuration level. SOFT LEVELS is displayed upon completion of the query. Press TUNE > to scroll through the software configuration version level.

- Preset button 5 = DISPLAY TEST. This test lights all the dual media audio unit display segments for 5 seconds. When the test is complete, DISPLAY TEST is displayed on the bezel.

- Preset button 6 = RADIO CONFIGURATION TEST. While in diagnostic mode, press Preset 6. RADIO CONFIG is displayed. Then press TUNE>. If the EQ download (at supplier plant) option and tuner configuration is not complete, then NO CONFIG is displayed. If EQ download option and tuner configuration is done correctly, then Config 1 (options), Config 2 (tuner setting), and EQ ID (identifier for EQ file downloaded) is displayed.

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

3. To exit the self-diagnostic mode, turn the ignition switch or the audio unit off.