Console: Description and Operation

INTRODUCTION
There are three types for overhead consoles.

Full Console:

1. Full console has:
- Overhead Travel Information System (OTIS).
- Two map/courtesy lamps.
- Two storage compartments one for garage door opener and the other for eye glasses.

Mini Console:

2. Mini console has:
- Overhead Travel Information System (OTIS)
- Two map/courtesy lamps

Base Unit:

3. Base unit has two map/courtesy lamps.


SYSTEM OPERATION
Map Reading Lamps
The map lamps are actuated by pressing on the switch to turn ON and a second time for OFF. The lamps also serve as courtesy lamps whenever:
- A door is opened
- The illuminated entry system is activated
- The headlamp dimmer switch is rotated up to the courtesy lamp detent.

Overhead Travel Information System (OTIS)
Overhead Travel Information System (OTIS) is a module with six informational displays and four buttons. When the vehicle is first turned ON:
- OTIS blanks the display for a half second
- Illuminates all segments of the vacuum fluorescent display (VFD) for one second
- Blanks the display again for half second
- OTIS then displays whatever display was being viewed when the ignition was turned OFF
There Are 6 Displays:
- Compass/Temperature
- Average fuel economy
- Distance to empty
- Instantaneous fuel economy
- Trip odometer
- Elapsed time

OTIS:

There Are 4 Buttons
The buttons operate when the ignition is in the ON position.
- STEP
- C/T
- US/M
- RESET

Step Button
Pressing the STEP button selects one of the following 5 displays:
- Average fuel economy
- Distance to empty
- Instantaneous fuel economy
- Trip odometer
- Elapsed time

C/T (Compass/Temperature) Button
Pressing the C/T button selects the Compass/Temperature display

US/M (English/Metric Measurement) Button
Pressing the US/M button switches the display units between English and Metric readings.

Reset Button
Pressing the RESET button resets the function on the display, provided that function can be reset. The functions which can be reset are Average fuel economy, Trip odometer and Elapsed time.

The RESET button is also used to set the variance and/or calibrate the compass. Refer to the Variance Procedure and Calibration Procedure.


CIRCUIT OPERATION
The Overhead Travel Information System (OTIS) receives all information across the CCD Bus from various controllers and modules.

Power for the OTIS is supplied by circuit G5. This circuit is protected by a 5 amp fuse located in cavity 14 of the junction block. Power for the fuse is supplied on circuit A21.

The A21 circuit connects between the ignition switch and the junction block. Circuit A21 is HOT in the START and RUN positions only

Power for the A21 circuit is supplied by circuit A1 from the Power Distribution Center (PDC). This circuit is protected by a 20 amp fuse located in cavity A of the PDC.

Ground for the OTIS is provided on circuit Z2. This circuit terminates at the Airbag Control Module (ACM) bracket.