TEST 55A - Diagnosing Compass/Temperature Module Problems
NOTE:
For wiring diagram, see WIRING DIAGRAMS at the end of this article.
Compass/temperature module diagnostics are separated into various categories. Verify customer complaint and identify problem area before performing appropriate test. Perform the test indicated in order. See DIAGNOSING COMPASS/TEMPERATURE PROBLEMS table.
DIAGNOSING COMPASS/TEMPERATURE PROBLEMS
| Description | TEST |
|---|---|
| Module Shows Fault Codes | Replace Module |
| COMP/TEMP & US/M Buttons | Replace Module |
| Blank Display | 55B |
| VFD Segment | 55C |
| Display Illumination | 55D |
| Compass Direction Reading | 55E |
| Ambient Temperature Reading | 56A |