Check compass module - MKX Lincoln Cars & Trucks

It usually means the compass on the vehicle needs recalibrating. That is the thing that tells you are going north or wherever in the mirror. The module is in the back of the mirror. Resetting is usually very easy.

Find an empty car park.
Press the Compass button on the mirror.
Do 3 complete circles left.
Do 3 complete circles right.

Google

year make model manual

They are all online. Press CTRL+F and type in Compass,.

Electronic Compass The compass display and module are contained in the overhead console and are replaced as an assembly. For additional information, refer to Section 501-12 . The compass display can be turned off and on by pressing the MODE button in the overhead console. The vehicle heading is displayed as one of N, NE, E, SE, S, SW, W, or NW.
Inspection and Verification
NOTE: Press the MODE button to turn on the display.

1. Verify the customer concern by operating the vehicle along roads of known direction to duplicate the customer concern with the compass.

1. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart Mechanical Electrical

• Compass module

• Central junction box (CJB) fuse 15 (7.5A)
• Circuitry

1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

1. If the fault is not visually evident, determine the symptom and GO to Symptom Chart .

Pinpoint Test A: The Compass Is Inaccurate/Inoperative
Normal Operation The compass receives battery voltage from the central junction box (CJB) through circuit 964 (DB/LG). Ground for the compass is supplied through circuit 676 (PK/OG).

Possible Causes
• fuse
• circuit 676 (PK/OG) open
• circuit 964 (DB/LG) open or short to ground
• compass zone setting
• compass calibration
• compass module

PINPOINT TEST A: THE COMPASS IS INACCURATE/INOPERATIVE NOTE: Always set the zone and calibrate the compass before replacing an inaccurate compass.
NOTE: After installing a new compass, always set the zone and calibrate.
Test Step Result / Action to Take A1 CHECK THE OVERHEAD COMPASS DISPLAY

• Key in ON position.
• Check the overhead display.
• Does the overhead compass display remain on after prove out?

Yes
GO to A3 .

No
GO to A2 . A2 CHECK THE COMPASS MODE

• Press and release the SELECT switch on the overhead console.
• Does the overhead compass display turn on?

Yes
If the compass display turns on correctly, GO to A3 . If the compass display turns on, but the heading is inoperative/inaccurate or the display indicates VAR, GO to A4 . If the compass display turns on, but it does not display all directions, or indicates CAL, GO to A5 .

No
GO to A7 . A3 CHECK THE COMPASS DIMMING

• Turn the headlamp switch to the parking lamps ON position.
• Does the compass display dim?

Yes
TURN the headlamp switch to the OFF position. GO to A4 .

No
TURN the headlamp switch to the OFF position. GO to A8 . A4 CHECK THE COMPASS ZONE SETTING

• Set the compass to the correct zone for your location. Refer to Compass Zone Adjustment in this section.
• Does the zone adjustment set correctly?

Yes
GO to A5 .

No
INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation. A5 CALIBRATE THE COMPASS

• Calibrate the compass. Refer to Compass Calibration in this section.
• Is the compass calibrated correctly?

Yes
GO to A6 .

No
INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation. A6 CHECK THE COMPASS ACCURACY

• Position the vehicle at each of the 8 directions (N, NE, E, SE, S, SW, W, NW) and verify that the displayed heading is accurate. The vehicle must be stationary for at least 10 seconds at each direction.
• Is the compass display accurate in each direction?

Yes
The compass is OK. REVIEW the operation of the compass with the customer.

No
INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation. A7 CHECK THE VOLTAGE SUPPLY TO THE OVERHEAD CONSOLE

• Key in OFF position.
• Disconnect: Overhead Console C930.
• Key in ON position.
• Measure the voltage between the overhead console C930-1, circuit 964 (DB/LG), harness side and ground.
• Is the voltage greater than 10 volts?

Yes
TURN the key to the OFF position. GO to A9 .

No
VERIFY the CJB fuse 15 (7.5A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. A8 CHECK THE DIMMING CIRCUIT

• Key in OFF position.
• Disconnect: Overhead Console C930.
• Turn the headlamp switch to the parking lamps ON position.
• Measure the voltage between the overhead console C930-4, circuit 484 (OG/BK), harness side and ground while rotating the instrument panel dimmer switch.
• Does the voltage vary between 0 and 10 volts?

Yes
GO to A9 .

No
REFER to Section 413-00 for further diagnosis of the instrument cluster and panel illumination. A9 CHECK CIRCUIT 676 (PK/OG) FOR OPEN

• Measure the resistance between the overhead console C930-2, circuit 676 (PK/OG), harness side and ground.
• Is the resistance less than 5 ohms?

Yes
INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation.

No
REPAIR the circuit. TEST the system for normal operation.

wow no symptoms stated just the boring where is it...
but great question, names car and year, clearly
we've posted the full fsm online here 100s of times.
here we go again.
down load it, then type , (after opening it)
control F, the type compass.
i wonder if a compass car has compass , omg.
i have 2010 and have same book.
did you scan the PCM yet, i bet not.
and its guess what, telling why it fails right now.
see page 8M-6 in book FSM.
the dtc shows car needs degaussing,, now.... see?
and if that error happens the compass goes blank, RTM?

8m-20
calibration, RTM
replacing first is "overthetop", why go there.
first are scans then tests.
or needs just a degaussing... (a tool)
page 27
"NOTE: In addition to the Universal Transmitter
operation the Electronic Overhead Module (EOM)
is responsible for some of the compass functions.
Anytime the EOM is replaced the compass variance
value must be set, (Refer to 8 - ELECTRICAL/
OVERHEAD CONSOLE/ELECTRONIC VEHICLE
INFO CENTER - STANDARD PROCEDURE - COMPASS
VARIATION ADJUSTMENT)."
not only that the PCM can lose commmications with this OEM.
so not scanning all modern cars, is a road to doom.
why skip scanning the car first and checking fuses.?????

scan first
ask questions 2nd.
my motto.... and WIN

Hi Roger, I'm glad to help. Below is the procedure for resetting the compass on your vehicle.



COMPASS VARIATION ADJUSTMENT Compass variance, also known as magnetic declination, is the difference in angle between magnetic north and true geographic north. In some geographic locations, the difference between magnetic and geographic north is great enough to cause the compass to give false readings. If this problem occurs, the compass variance setting may need to be changed.
To set the compass variance:

1. Using the Variance Settings map, find your geographic location and note the zone number Figure 1.
Figure 1 - Variance Settings 2. Turn the ignition switch to the On position. If the compass/thermometer data is not currently being displayed, momentarily depress and release the C/T push button to reach the compass/thermometer display. 3. On Electronic Vehicle Information Center (EVIC) and Compass Mini-Trip Computer (CMTC) equipped vehicles depress the Reset push button and hold the button down until "VAR = XX" appears in the display. This takes about five seconds. On Compass Temperature Module (CT) equipped vehicles depress the C/T push button and US/M push button down until "VAR = XX" appears in the display. This takes about five seconds. 4. Release the push button(s). "VAR =XX " will remain in the display. "XX" equals the current variance zone setting. 5. On Electronic Vehicle Information Center (EVIC) and Compass Mini-Trip Computer (CMTC) equipped vehicles momentarily depress and release the STEP button to step through the zone numbers, until the zone number for your geographic location appears in the display. On Compass Temperature Module (CT) equipped vehicles depress the US/M push button to step through the zone numbers, until the zone number for your geographic location appears in the display. 6. On Electronic Vehicle Information Center (EVIC) and Compass Mini-Trip Computer (CMTC) equipped vehicles momentarily depress and release the RESET push button to enter the displayed zone number into the EVIC/CMTC module memory. On Compass Temperature Module (CT) equipped vehicles depress the C/T push button to enter the displayed zone number into the electronic module memory. 7. Confirm that the correct directions are now indicated by the compass.

This error is caused by a connection that's loose or damaged, or because the compass hasn't calibrated correctly. Check out the owner's manual to find that the calibration process for your particular zone, then go to an open parking lot to complete the process.

I would check all fuses and replace any blown and retest. If the compass is still not working..I would make sure there is power at the compass module...If there is.. I would replace the module.

It means "Crystal Clear Display" but in basic term its called a ccd bus, basically the OH console module is not communicating with body control module so you want to check power and ground pins or you just might have a bad module, sorry.
A self-diagnostic test is used to determine that the
compass mini-trip computer module is operating
properly electrically.
CCD communications test.
Following completion of these tests, the compass
mini-trip computer will display one of three
messages: “PASS,” “FAIL,” or “CCd.”
if the “CCd” message is displayed, the use of a
DRBt scan tool and the proper Diagnostic Procedures
manual are required for further diagnosis.

overhead module with the temmp and compass typically just quit after a few years
pull it down and check voltage to the module

need overhead module