SRT-4 L4-2.4L Turbo VIN S (2004)
Compass/Temp Mirror will illuminate the Zone Variance number 1 to 15 that is stored in memory. While ZONE is displayed; momentarily pressing
the Zone/Cal button advances the zone to the next higher zone. When the desired zone number is displayed, do not press the Zone/Cal button again.
After 5 seconds, the Zone Variance number will be stored in the module memory.
With the ignition in the ON position, pressing and holding the Zone/Cal button for 10-15 seconds will toggle the CAL (calibration) mode between on
and off. Releasing the button while CAL is displayed enters the compass into the calibration mode. See "First Time Calibration", "Manual
Calibration", and "Continuous Calibration."
Pressing and holding the Zone/Cal button for 15-20 seconds and then releasing will exit the CAL mode and toggle the display to the current state of
compass/temperature mirror use; OFF, Compass/Temperature F°, or Compass/Temperature C°.
Pressing and holding the Zone/Cal button for 20-25 seconds will enter the CTM into the self-check diagnostic mode upon releasing the button.
Holding the Zone/Cal button for longer than 25 seconds will cause the display to return to its current state with no changes.
SETTING COMPASS ZONE
The compass has a default zone of 8. Refer to the Zone Variance Map to determine the correct zone number. The correct compass Zone selection is
critical to proper compass operation. With the ignition in the ON position, pressing the Zone/Cal button (left reading lamp button) for 5-10 seconds
and then releasing while ZONE is illuminated enters the compass into the Zone display mode. In the Zone display mode, ZONE will be illuminated
instead of the temperature. The current Zone number, 1 through 15 will be displayed. While ZONE is illuminated; momentarily pressing the Zone/Cal
button advances the zone to the next higher zone. When the desired zone number is displayed, do not press the Zone/Cal button again. After 5 seconds
, the Zone Variance number will be stored in the module memory.
FIRST TIME CALIBRATION
A new Compass/Temp Mirror is shipped in a first time calibration mode. CAL is illuminated when the Compass/Temp Mirror is first powered up. The
first time calibration mode can not be exited until the first time calibration process is completed. The CAL icon will remain illuminated to alert the
driver that the Compass/Temp Mirror is operating in the CAL mode. Move the vehicle to an area away from large metallic objects or overhead power
lines. While CAL is illuminated in the display the vehicle must be driven in 3 complete 360 degree circles at less than 5 MPH (8 KPH). The compass
will calibrate; CAL will turn off, and then resume normal operation.
MANUAL CALIBRATION
With the ignition in the ON position, pressing and holding the Zone/Cal button (left reading lamp button) for 10-15 seconds will toggle the display to
CAL. Releasing the button within the 10-15 second duration will enter the compass into the calibration mode. CAL will remain illuminated until the
calibration is complete or is toggled off by pressing the Zone/Cal button. Move the vehicle to an area away from large metallic objects or overhead
power lines. While CAL is illuminated in the display the vehicle must be driven in 3 complete 360 degree circles at less than 5 MPH (8 KPH). The
compass will calibrate; CAL will turn off, and then resume normal operation.
CONTINUOUS CALIBRATION
During normal operation, the Compass/Temp Mirror will continuously update the compass calibration to adjust for gradual changes in the vehicle's
magnetic remnant field. If the vehicle is subjected to high magnetic influences, the compass may appear to indicate false headings or appear unable to
be calibrated. If this occurs the vehicle may need to be demagnetized.
SELF-CHECK DIAGNOSTICS
With the ignition ON, the Compass/Temp Mirror can perform a diagnostic self-check by pressing and holding the Zone/Cal button (left reading lamp
button) for 20-25 seconds. The internal diagnostics will sequence the following five tests:
1. VF segment display-Illuminates the segment patterns one at a time for 1 second each as follows: CAL; ZONE; N; NE; E; SE; S; SW; W; NW;
0 through 9; C°; F°
2. CTM memory-ROM Checksum
3. CTM memory-RAM
4. CTM memory-EEPROM
5. Compass Test
During the self-check, if any of the internal tests fail, the Compass/Temp Mirror will display an "F" and the number of the test that failed. If more than
one test fails "FO" will be displayed. P-Pass or F-Fail will be displayed until the Zone/Cal button (left reading lamp button) is pressed and released or
the ignition is cycled. If all of the tests pass, the Compass/Temp Mirror will display "P". A VF segment that fails to illuminate will not cause the
Compass/Temp Mirror to display an "F". If any segment fails to illuminate or the Compass/Temp Mirror displays "F", the Compass/Temp Mirror must
be replaced.
To exit self-check diagnostics, press and release the Zone/Cal button or cycle the ignition to return to normal compass/temp operation.
OUTSIDE TEMPERATURE
The Compass/Temp Mirror utilizes vehicle speed and engine temperature data received on the PCI Bus to accurately display the outside temperature
to avoid "hot soak" condition readings. The displayed outside temperature information is stored within the memory of the compass/temp mirror. When
the Compass/Temp Mirror is first powered up, it retrieves the temperature data from the module memory. The memory temperature is compared with
the temperature received from the ambient temperature sensor. The colder of the two temperatures is displayed.
