E 150 V8-5.4L (2008)
Compass: Initial Inspection and Diagnostic Overview
Principles of Operation
PRINCIPLES OF OPERATION
The compass and ambient air temperature display can be turned on and off by pressing the SELECT switch in the overhead console. The vehicle heading
is displayed as N, NE, E, SE, S, SW, W, or NW.
The ambient air temperature can be displayed in Celsius or Fahrenheit by pressing the SELECT switch.
If the ambient air temperature falls below 3.3°C (38°F), the ambient air temperature display alternates at a 2-second rate from "ICE" to the ambient air
temperature for one minute after starting the vehicle. After one minute has elapsed, the ambient air temperature display will show only the temperature
reading.
Inspection and Verification
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. If the cause is not visually evident, verify the symptom. GO to Symptom Chart. See: Symptom Related Diagnostic Procedures
