300M V6-3.5L VIN G (2000)
travel and then releasing the switch and pressing it again. The seat will move a short distance further. Once the seat is past the guard band it can be
stored in memory, but if recall is initiated the seat will move to the guard bands and no further.
Memory Mirrors
Each outside mirror has a vertical and a horizontal position sensor. The MHSMM provides a 5-volt reference to each position sensor. The sensors
share a common ground circuit. The MHSMM monitors the position of the mirrors by measuring the voltage of each signal. When a memory
position is set, the MHSMM monitors and stores the position of the outside mirrors. The MHSMM adjusts the mirrors to the appropriate positions
when a memory recall message is received from the RKE or is requested from the memory switch.
The power mirror switch during non-memory operation operates both mirrors independently of the MHSMM.
Heated Seats
The controls for the heated seats are located on the side of each seat. The system offers two seat temperature settings of approximately 98.6 F
(LO) and approximately 107.6 F (HI).
As the temperature in the seat rises, the Negative Temperature Coefficient (NTC) resistance decreases and the voltage reading detected by the
MHSMM increases. The seat heater output is deactivated once the voltage reading reaches it's upper threshold for either setting, high or low.
As the temperature decreases, the voltage reading decreases until the lower threshold is reached for either setting high or low. At this point the seat
heat output is activated once again and this cycle repeats itself as long as the seat heat request is ON. The thresholds for low and high settings are
preprogrammed into the MHSMM memory.
The heated seat switch contain resistors pulled up to ignition which are processed by the MHSMM as voltage readings indicating desired heat
setting high or low.
Overhead Travel Information System
The overhead travel information system (OTIS) gives the driver information that supplements the primary gauge instrumentation. OTIS displays
this information on a vacuum fluorescent display (VFD). The OTIS module has four switch inputs. The buttons for these switches are integral to
the OTIS housing. There are two buttons on each side of the OTIS. The buttons are labeled US/M, C/T; STEP, and RESET. The driver selects and
resets display functions through the use of these four buttons. The OTIS will display these functions:
Compass/Temperature
AVE ECO Average Fuel Economy
ECO Instantaneous Fuel Economy
DTE Distance to Empty
ET Elapsed Time
ODO Trip Odometer
If the vehicle is equipped with the optional Homelink feature, the OTIS will have three buttons located in the center of the OTIS module. The
OTIS module receives all of its information over the PCI bus except compass, which is internal to the OTIS module. The OTIS powers up when it
recognizes vehicle voltage on the ignition input circuit. OTIS blanks the display, then illuminates all segments of the VFD. It then blanks the
display again. During this time, the OTIS sends and receives information over the PCI bus to determine what to display after the two-second
initialization. The OTIS displays dashes -- - -) for any of the screens for which it did not receive bus messages during the two- second
initialization. These dashes will be replaced by valid information if and when it is received from the bus.
Setting the Compass
The compass in the OTIS module is self-calibrating and requires no manual adjustment. If calibration is required, the word CAL will be displayed
to indicate that the compass is in the fast calibrating mode. "CAL" will turn OFF after the calibration is completed, only if the OTIS/HOMELINK
System is not located within a high strength magnetic field.
