Page 3953 of 4133
GF54.50-P-4101-01GH
Electronic compass, purpose
n
The electronic compass (B26) determines the current route
of the
vehicle using the
earth's magnetic field
and passes the appropriate
data to the trip computer control module (N41) via a two-wire
interface (RS485).
The compass has a calibration mode to allow the route to be
determined as accurately as possible. In this mode the compass can
be adapted to the magnetic conditions around the vehicle.
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Page 3954 of 4133
GF54.50-P-4100-02GH
Trip computer control module, design
n
The trip computer control module (TRIP, N41) consists of the
following components:
D
Electronics unit
D
LCD display
D
Reset button (left button, N41s1)
D
Mode button (right button, N41s2)
D
Inclination sensor (N41b1)
D
Glass breakage sensor (N41b2)
D
CAN interface
D
Alarm bus to all activity module (AAM, N10)
D
as of 1.9.00: Interface (RS 485) to electronic compass (B26)
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Page 3955 of 4133
GF54.50-P-4100-02GH
Trip computer control module, design
n
The trip computer control module (TRIP, N41) consists of the
following components:
D
Electronics unit
D
LCD display
D
Reset button (left button, N41s1)
D
Mode button (right button, N41s2)
D
Inclination sensor (N41b1)
D
Glass breakage sensor (N41b2)
D
CAN interface
D
Alarm bus to all activity module (AAM, N10)
D
as of 1.9.00: Interface (RS 485) to electronic compass (B26)
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Page 3956 of 4133
GF54.30-P-2016A
Trip computer interface, location/task
7.7.99
MODEL
129, 140 as of 1.6.96
The trip computer receives the following information via the trip
computer interface (2 lines):
D
Driving speed
D
Mileage
D
Time
-----------------------------------------------------------------------------------------
The trip computer receives information about fuel consumption
directly from the fuel level sensor.
-----------------------------------------------------------------------------------------
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Page 3957 of 4133
GF54.50-P-4100GH
Trip computer control module, location/task/design
24.3.00
MODEL
163 as of 1.9.00 with CODE (245) Trip computer
P54.50-0212-06
N41
Trip computer control module
Trip computer control module, location
The trip computer control module (TRIP, N41)
is located above the
inside rearview mirror unit.
Trip computer control module, task
GF54.50-P-4100-01GH
Trip computer control module, design
GF54.50-P-4100-02GH
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Page 3958 of 4133
AR54.50-P-0001GH
Remove, install trip computer
17.12.98
MODEL
163.113 /128 /136 /154 /157 /172 /174 /175 with CODE (245) Trip computer
P54.50-0212-06
N41
Trip computer control module
P54.50-2030-06
1
Bolts
2
Overhead control panel
3
Connector
N41
Trip computer control module
Remove/install
1
Ensure that the ignition key is in position "0".
In order to prevent error codes.
AR54.10-P-0003A
2
Remove overhead control panel (2).
AR82.20-P-1100GH
3
Unscrew trip computer control module (N41)
from overhead control panel (2).
Unscrew screws (1) from control module.
4
Detach connector (3) from trip computer
control module (N41).
5
Install in the reverse order
6
Check that trip computer functions correctly.
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Page 3959 of 4133
GF54.50-P-4100-01GH
Trip computer control module, task
n
The trip compute control module (TRIP, N41) has the following tasks:
D
Display and calculate the current and average fuel consumption
D
Display and calculate the likely range
D
Display the trip time
D
Display the date
D
as of 1.9.00: Display the route (compass)
On vehicles with
ATA
also to:
D
Display the status of the ATA sensory system (on/OFF)
D
Output a "life sign" on the alarm bus to the all activity module
(AAM, N10)
D
Output an alarm signal on the alarm bus to the all activity
module (AAM, N10) when the
glass breakage sensor (N41b2)
is triggered
D
Output an alarm signal on the alarm bus to the all activity
module (AAM, N10) when the
inclination sensor (N41b2) is
triggered
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Page 3960 of 4133

AD54.30-P-5000-03A
Directly controlled display instruments
troubleshooting chart IC
Directly controlled display instruments or indicator
lamp/warning message:
D
Outside temperature indicator
D
Fuel gauge
D
Oil pressure gauge (models 129 and 140 only)
D
Left turn signal indicator lamp
D
Right turn signal indicator lamp
D
High beam indicator lamp
D
Fuel reserve indicator lamp
D
Airbag SRS indicator lamp/MIL
D
AIRBAG OFF indicator lamp (only model 163 except
I )
D
Low brake fluid level/parking brake indicator lamp (only brake
fluid direct)
(both functions via CAN on model 163)
D
Low windshield washer fluid level indicator lamp (except
models 163 and 168)
D
Low ECL indicator lamp (except models 163 and 168)
D
Generator charge indicator lamp
D
Seat belt reminder lamp
D
Seat belt/backrest lock reminder lamp
D
Exterior lamp failure indicator lamp
D
Hydraulic fluid level indicator lamp (models 202 and 210 only)
D
ADS MIL, suspension
D
Turn signal clicking
D
Seat belt reminder lamp
D
Light reminder lamp
D
Key reminder lamp
D
Soft top reminder lamp (model 170 only)
D
Steering lock warning lamp (
I )
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