RAM 1500 Truck 4WD V8-5.9L VIN Z (2002)
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Drive the vehicle to an area away from any large metal objects or overhead power lines.
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Ensure that the proper variance zone is selected. See "Setting Magnetic Zone Variance.
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The ignition switch must be in the On position and the CMTC/EVIC display must not be blank.
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Press the C/T button to view the Compass/Temperature display.
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Press and hold the RESET button until CAL is displayed, then release the button.
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Drive slowly, less than 5 MPH (8 KPH) in at least 1 complete 360 degree circle.
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CAL will remain illuminated to alert the driver that the compass is in the calibration mode.
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After calibration is complete, CAL will turn OFF.
Setting Magnetic Zone Variance
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, Follow these steps to check or change the variance zone:
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The ignition switch must be in the On position and the CMTC/EVIC display must not be blank.
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If the compass/temperature data is not currently being displayed, momentarily press and release the C/T button to display compass/temp information.
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Press and hold the RESET button until VARIANCE = XX is displayed. The CMTC/EVIC will display the variance zone stored in memory and the
word VARIANCE.
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Use the STEP button to select the proper variance zone number, 1 through 15.
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After selecting the proper zone number, momentarily press and release the RESET button. The variance zone is then stored in the memory and the
CMTC/EVIC returns to normal operation.
HOMELINK UNIVERSAL TRANSMITTER
If equipped, the HomeLink Universal Transmitter is integrated into the overhead console. For added security it will operate home security systems that
use coded signals known generically as Rolling Codes. The overhead console display provides visual feedback to the driver, indicating which HomeLink
transmitter channel button is being pressed. The HomeLink can learn and store up to three separate transmitter radio frequency codes to operate garage
door openers, security gates, and security lighting. The HomeLink buttons are marked with one, two, or three dots.
Homelink Universal Transmitter
HOMELINK UNIVERSAL TRANSMITTER
If equipped, the HomeLink Universal Transmitter is integrated into the overhead console. For added security it will operate home security systems that
use coded signals known generically as Rolling Codes. The overhead console display provides visual feedback to the driver, indicating which HomeLink
transmitter channel button is being pressed. The HomeLink can learn and store up to three separate transmitter radio frequency codes to operate garage
door openers, security gates, and security lighting. The HomeLink buttons are marked with one, two, or three dots.
Door Ajar System
DOOR AJAR SYSTEM
The door ajar state is used as an input for various control modules on the vehicle. The DRB III will display the state of the door ajar switches in
Inputs/Outputs. It's important to note, that when a door is closed, the switch state on the DRB III will show OPEN, and when the door is open, the switch
state will show CLOSED. During diagnosis, if a door is closed and the DRB III displays the switch state as CLOSED, it indicates a shorted door ajar
circuit. If the door is open and the DRB III displays the switch state as OPEN, it indicates an open door ajar circuit.
Electrically Heated Systems
ELECTRICALLY HEATED SYSTEMS
HEATED MIRROR RELAY
