RAM 1500 Truck 4WD V8-5.9L VIN Z (2002)
Fig. 1 Roof Demagnetizing Pattern
6. Place a piece of paper approximately 22 by 28 centimeters (8.5 by 11 inches), oriented on the vehicle lengthwise from front to rear, on the center
line of the roof at the windshield header (Fig. 1). The purpose of the paper is to protect the roof panel from scratches, and to define the area to be
demagnetized.
7. Connect the degaussing tool to an electrical outlet, while keeping the tool at least 61 centimeters (2 feet) away from the compass unit.
8. Slowly approach the center line of the roof panel at the windshield header, with the degaussing tool connected.
9. Contact the roof panel with the plastic coated tip of the degaussing tool. Be sure that the template is in place to avoid scratching the roof panel.
Using a slow, back-and-forth sweeping motion, and allowing 13 millimeters (0.50 inch) between passes, move the tool at least 11 centimeters (4
inches) to each side of the roof center line, and 28 centimeters (11 inches) back from the windshield header.
10. With the degaussing tool still energized, slowly back it away from the roof panel. When the tip of the tool is at least 61 centimeters (2 feet) from
the roof panel, disconnect the tool.
11. Calibrate the compass and adjust the compass variance (Refer to OVERHEAD CONSOLE - STANDARD PROCEDURE).
Compass Variation Adjustment
Compass variance, also known as magnetic declination, is the difference in angle between magnetic north and true geographic north. In some geographic
locations, the difference between magnetic and geographic north is great enough to cause the compass to give false readings. If this problem occurs, the
compass variance setting may need to be changed.
To set the compass variance:
