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).