Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Setting Magnetic Zone Variance
Variance is the difference between magnetic North and geographic North. For proper compass function, the correct variance zone must be set.
Refer to the ZONE VARIANCE MAP for the correct zone. See Fig 1. Follow these steps to check or change the variance zone:
- The ignition switch must be in the On position and the CMTC display must not be blank.
- Press and hold the STEP and US/M buttons until VAR is displayed. The CMTC will display the last variance zone stored in memory and the word VAR.
- Use the STEP button to select the proper variance zone number, 1 through 15.
- After selecting the proper zone number, simultaneously press the STEP and US/M buttons or wait approximately 15 seconds. The variance zone is then stored in the memory and the CMTC returns to normal operation.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.