Initial Inspection and Diagnostic Overview

INSPECTION AND VERIFICATION

1. Verify the customer concern.

Visual Inspection Chart:

2. Visually inspect for obvious signs of mechanical or electrical damage.
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. If the cause is not visually evident, verify the symptom and GO to Symptom Chart. Symptom Related Diagnostic Procedures

Upgrading The Audio/Navigation Unit Software

To carry out an audio/navigation unit software upgrade, the following steps must be taken:

1. CAUTION: Do not remove voltage from the audio unit during the software update.

Turn the ignition switch to the ON or ACC position.

2. Turn the audio/navigation unit ON.
3. Install a new navigation database CD.
4. If the audio unit recognizes a revised level of software, it prompts the user to confirm whether they would like to carry out a software upgrade. When the Updating System Software screen is displayed, press the YES button on the display screen to accept the software update.
5. The audio unit carries out a unit reset, upgrades the software and carries out a second unit reset upon completion. When the audio unit returns to normal mode, the software upgrade is complete.