Range Rover 2. Electrical Manual — part 175
INSTRUMENTS
E1
2
CIRCUIT DIAGRAM
LG
LG
5
7
C1276
17
14
[15]
4
C0233
B
S205
See Fuse Details
30
F 1
10 A
7
B
8
BG
14
18
BG
5
2
2
12
10
RG
RG
1
13
9
OG
OG
E0564
P
P
3
C0233
11
15
3
C1280
9
Y
YG
11 C1289
Z238
Body Electrical
Control Module
(BECM)
Z142
Instrument Cluster
[1]
Speedometer
[15] Control Unit
and Message
Centre
Display
Z108
Anti–Lock Brake
System ECU
Z238
Body Electrical
Control Module
(BECM)
[1]
3
C1584
C0504
LHD
RHD
16
INSTRUMENTS
E1
3
CIRCUIT DIAGRAM
Z142
Instrument
Cluster
[2]
Tachometer
[3]
Fuel Gauge
[15] Control
Unit and
Message
Centre
Display
Z238
Body Electrical
Control Module
(BECM)
Z132
Engine Control
Module (ECM)
Z132
Engine Control
Module (ECM)
Z134
Fuel Pump
Module
[1]
Fuel Level
Sensor
10
16
C0233
15
8
C1280
BK
S
10
C1289
GB
2
C0205
3
C0205
B
S115
E0559
17
C0637
S
Petrol
Diesel
50
C0411
20
C0448
C0203
S
9
C1288
[2]
[3]
[15]
[1]
See Ground
Distribution
1
C0204 Diesel
Petrol
2
C0204
Petrol
Diesel
20
C0448
C0162
INSTRUMENTS
E1
4
CIRCUIT DIAGRAM
REV: 08/99
[4]
Z142
Instrument Cluster
[4]
Temperature
Gauge
Z238
Body Electrical
Control Module
(BECM)
C1289
19
G
Petrol
Diesel
C0448
12
C0162
C0196P
2
X126
Engine Coolant
Temperature
Sensor
C0196D
1
X114
Engine Coolant
Temperature
Gauge Sensor
1
B
C0196P
See Ground
Distribution
S506
C0448
12
C0203
2
E0559
C0196D
C0203
6
C0448
S115
NY
See Fuse Details
E1355
BP
WARNINGS AND INDICATORS
E2
CIRCUIT OPERATION
1
CIRCUIT OPERATION
All warning Indicators are controlled by Data sent to
the Instrument Cluster (Z142) from the Body
Electrical Control Module (BeCM) (Z238). All data is
transmitted via the serial data lines. The BeCM
(Z238) will provide data based upon input from
various sensors.
Some warning lights may also be accompanied by a
message which will appear in the message centre
display on the instrument pack.
Service Reminder Indicator (SERVICE ENGINE)
Illuminates briefly (for 3 seconds) as a bulb check
when the Ignition switch is turned to position II.
Illuminates continuously when the vehicle reaches
50,000 miles (80,500 km) approx.
Low Fuel Warning Indicator
Illuminates briefly (for 4 seconds) as a bulb check
when the Ignition Switch is turned to position II.
When the fuel gauge sensors resistance value
increases to 175
Ω
(9 liters/2.25 US gallons, the low
fuel warning light will illuminate to warn of the fuel
status. Both Petrol and Diesel sensors are interfaced
to the Instrument Cluster (Z142) via the BeCM
(Z238).
High Temperature Warning Indicator
Illuminates briefly (for 4 seconds) as a bulb check
when the Ignition switch is turned to position II.
The engine coolant temperature gauge sensor has
the capability to sense from –40
_
C to +130
_
C. Petrol
and Diesel resistance valves are different.
Both Petrol and Diesel sensors are interfaced to the
Instrument Cluster (Z142) via the BeCM (Z238).
Malfunction Indicator Lamp (CHECK ENGINE)
Illuminates briefly when the Ignition Switch is turned
to position II as a bulb check and extinguishes when
the engine is running. Illumination at any other times
indicates an engine fault.
Both Petrol and Diesel Engine Control Modules
(Z132) are interfaced to the Instrument Cluster
(Z142) via the BeCM (Z238).
Oil Pressure Warning Indicator
Illuminates as a bulb check when the Ignition switch
is turned to position II, and extinguishes when the
engine is running.
The Oil Pressure Switch (X149) is closed with Low
Oil Pressure.
Both Petrol and Diesel switches are interfaced to the
Instrument Cluster (Z142) via the BeCM (Z238).
ABS Warning Indicator
This light illuminates for approximately 1 second
when the Ignition switch is turned to position II, and
then briefly extinguishes before coming on again.
The warning indicator will then remain illuminated
until the vehicle is driven above approximately 5 mph
(7 km/h). If the light does not extinguish or
illuminates again then a fault has occurred with the
ABS system.
If the light remains illuminated once a speed of 5
mph (7km/h) has been reached, or subsequently
illuminates whilst driving, a fault has been detected
by the self–monitoring system. The message centre
will display
¡
ABS FAULT
¢
.
The ABS System is interfaced to the Instrument
Cluster (Z142) via the BeCM (Z238).
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