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Information and Entertainment System - General Information - Information Diagnosis and Testing Principles of Operation For a detailed description of the Information and Entertainment systems, refer to the relevant Description and Operation Audio System (415-01 Information and Entertainment System, Description and Operation), Speakers (415-01 Information and Entertainment System, Description and Operation), Navigation System (415-01 Information and Entertainment System, Description and Operation), Antenna (415-02 Antenna, Description and Operation). Inspection and Verification CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor 1. Verify the customer concern. 1. 2. Visually inspect for obvious signs of mechanical or electrical damage and system integrity. 2. Visual Inspection Mechanical Electrical Integrated audio module Fuses 3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step. 3. 4. If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to relevant DTC Index. 4. Navigation System Symptom Chart Symptom Possible Cause Action Poor satellite reception Electrical harness open/short GO to Pinpoint Test B. Map disc will not insert/eject Electrical harness open/short GO to Pinpoint Test C. Black screen (navigation Electrical harness open/short GO to Pinpoint Test D. Navigation map screen color Electrical harness open/short GO to Pinpoint Test E. Vehicle’s current position Electrical harness open/short GO to Pinpoint Test F. DTC Index • NOTE: If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the |