Compass and fuel economy display does not work

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.

Manual Compass Calibration If the compass appears erratic and the calibration symbol does not appear, you must manually put the compass into the calibration mode. To get into this mode, do the following: 1. Turn the ignition on and cycle the DIC to the compass/temperature mode. 2. Press and hold the SET button for longer than three seconds. ZONE # PRESS & HOLD SET TO CHANGE: This display mode will be displayed when you are manually calibrating the system. The current zone number for compass variance will be displayed in place of the # symbol. Use the SET button to select the zone number from the graphic shown to select the current area of the country that you are driving in. PRESS SET TO CALIBRATE COMPASS: After selecting your zone, press the MODE button and this will be displayed on the DIC. Press the SET button and complete three 360 degree turns in an area free from large metal objects. The following two messages will toggle in the display until you calibrate the compass: • DRIVE VEHICLE IN CIRCLE • CALIBRATING COMPASS When calibration is complete, the display will return to its normal mode. 3-61 info obtained from MANUAL OWL
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Compass Variance Zone Procedure DIC Compass Driver Information Center DIC...

http://www.manuals365.com/swf/buick/2004_buick_rendezvous_owners.html?page=200

http://repair.chiltondiy.com/Buick/Rendezvous/Repair-Manual-Online
http://www.repairservicemanuals.com/Buick

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 is a very common issue with this, and many other overhead consoles of this era. I offer a repair solution with a lifetime guarantee. Check it out: www,autoclockrepair.com
I have info on how to remove the console etc there as well. Drop me a note if you have any questions, thanks!

There are five trip computer displays which may be stepped through by pushing the MODE button. The information will appear in the following order:

D AVG ECON (Average Fuel Economy): This shows the average fuel economy since the last reset.

D INST ECON (Instantaneous Fuel Economy): This shows fuel economy for the most recent second of driving.

D RANGE (Trip Range): This shows the estimated distance that can be traveled with the remaining fuel. The fuel economy used to calculate range is based on the last few hours of driving. When in a low fuel condition, LO is displayed.

D FUEL USED (Trip Fuel Used): This shows the accumulated fuel used since the last reset.

D AVG SPEED (Average Speed): This shows the average speed since the last reset.

You can download a replacement Owner's Manual here: 2002 Chevrolet Impala Owner's Manual (PDF file from www.gmownercenter.com)

This is a very common problem with many of the mid 2000 Ford truck and SUV overhead consoles. The console is very prone to internal failure. I offer a reasonable repair service with a lifetime guarantee, check it out: www.autoclockrepair.com
There is a bunch of useful info there. Drop me an email if you have questions, thanks!

sounds like the monitor has to be replaced, remove it and check it for power if its getting power then replace it.

The "OC" indicates your compass is "Out of Calibration". Below is the proceedure to recalibrate your compass.

Compass Calibration
The compass may need calibration if:

After five seconds, the display does not show a
compass heading (N for North, for example), there
may be a strong magnetic field interfering with the
compass. Such interference may be caused by a
magnetic antenna mount, magnetic note pad holder
or a similar magnetic item.

The compass does not display the correct heading
and the compass zone variance is set correctly.
In order to calibrate, the letters CAL must be displayed
in the mirror compass windows. If CAL is not
displayed, push in the COMP button for approximately
eight seconds or until the letters CAL are displayed.
The compass can be calibrated in one of two ways:

Drive the vehicle in circles at 5 mph (8 km/h) or less
until the display reads a direction, or

drive the vehicle on your everyday routine and after
several turns the compass will become calibrated and
will display a direction.

Good luck.

It seems that you are low on fuel based on you saying 70 miles in the range gauge. If this problem does not happen with 3 gallons of fuel or more then it is normal. The range is calculated on your average MPG and gallons of fuel in the tank. When the car gets to around 2 gallons it does not chance miscalculating your miles to empty and leave you on the side of the road. At this point he tank will read "E" to let you know it is time to fuel up. The flashing "E" is simply cadillac's way to get your attention that you are in fact low on fuel and need to take action. Hope this helps.

alls u need is a tune up plugs wires cap roterbuting and it will be good as new