Compass Calibration Procedure (Fast Method)

When the compass is subjected to excessive magnetic fields, the CMTC automatically enters a fast calibration mode where is tries to compensate for the large magnetic shifts.

If the compass is inaccurate, appears to be inaccurate and the CAL is not illuminated the fast calibration mode may be manually entered by using the following procedure.
1. Set the CMTC to Compass/Temperature mode and press the reset button for 10 continuous seconds. Manual activation of the fast calibration is generally not required.
2. Compass variance sets to the default of 8 after the fast calibration is manually activated.
3. Complete the compass variance setting procedure by referring to the Compass Variance Procedure.
4. Drive the vehicle in three 360° turns in an area free from large metal objects. If the CAL symbol remains lit after completing this step, the roof panel may need demagnetizing