Land Rover Discovery Lhd Models Etm 1995 4th Edition Exp Rover Manual

							ELECTRICAL TROUBLESHOOTING MANUA L
E2 ETM
Warnings and Indicators (except NAS)
16
DISCOVERY

  
  



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Cluster 
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Z135
Glow Plug Timer
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Z142
Instrument
Cluster 
						

							ELECTRICAL TROUBLESHOOTING MANUAL
ETM E2
Warnings and Indicators (except NAS)
17
DISCOVERY
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X111
Brake Fluid Level
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ELECTRICAL TROUBLESHOOTING MANUA L
E2   ETM
Warnings and Indicators (except NAS)
18
DISCOVERY
	 	





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							ELECTRICAL TROUBLESHOOTING MANUAL
ETM E2
Warnings and Indicators (except NAS)
19
DISCOVERY
 
  
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Cluster
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Drivers Seat
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Multi±Function
Unit (MFU)
1 2 3 4 5 6 7 8 9 10 11 12
19 20 21 22 23 24 1415 16 17 18 13



	
Z148
Multi±Function
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1 2 3 4 5 6 7 8 9 10 11 12
19 20 21 22 23 24 1415 16 17 18 13



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							ELECTRICAL TROUBLESHOOTING MANUA L
E2   ETM
Warnings and Indicators (except NAS)
20
DISCOVERY


 





  


 

	 
	 


 
!Automatic Trans-
mission Oil Tem-
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X108
Automatic Trans-
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!Transfer Box Oil
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							WARNINGS AND INDICATORS (NAS)
1
ETM E3
DISCOVERY
ELECTRICAL TROUBLESHOOTING MANUAL
CIRCUIT OPERATION
Charge Warning Light
The charge warning light receives battery voltage
with the Ignition Switch (X134) in position II. This
warning light is grounded by the Generator (Z106)
if the Generator is not producing normal power
output or the Generator stops turning.
ABS Warning Light
The ABS warning light receives battery voltage with
the Ignition Switch (X134) in position II. It is
grounded by the Anti±Lock Brake System ECU
(Z108) or the ABS Warning Relay (K103) in the
event of an ABS problem.
Brake Warning Light
The brake warning light receives battery voltage
with the Ignition Switch (X134) in position II. It is
grounded by the Brake Fluid Level Switch (X111)
when the brake fluid level is low. It may also be
grounded when the Handbrake Switch (X191) is
closed.
Oil Pressure Warning Light
The oil pressure warning light receives battery
voltage with the Ignition Switch (X134) in position
II. If the engine oil pressure is very low, the Oil
Pressure Switch (X149) will apply ground to the
warning light.
Transmission/Transfer Box Oil Temperature
Warning Light
The transmission/transfer box oil temperature
warning light is grounded by the Automatic
Transmission Oil Temperature Switch (X108) when
the temperature of the transmission fluid exceeds
1305C (2665F). The warning light is also grounded
by the Transfer Box Oil Temperature Switch (X174)
when the temperature of the transfer box fluid
exceeds 1455C (2665F).
MFI±V8 and 300Tdi with EDC
Malfunction Indicator Lamp (Check Engine)
The Malfunction Indicator Lamp (Check Engine) is
grounded by the Engine Control Module (ECM)
(Z132) when a diagnostic trouble code is set.
Service Reminder Indicator
The Service Reminder Indicator receives battery
voltage with the Ignition Switch (X134) in position
II. The Service Reminder Unit (Z126) grounds the
Service Reminder Indicator when the vehicle
requires service. The Service Reminder Indicator is
also grounded by a 3 second timer as a bulb
check. 
						

							WARNINGS AND INDICATORS (NAS)
2
E3 ETM
DISCOVERY
ELECTRICAL TROUBLESHOOTING MANUA L
Hazard Indicator
If the Hazard Switch (X220) is depressed, a pulsing
voltage is applied to the Hazard Indicator which is
permanently grounded by ground E201.
Direction Indicator
If the Direction Indicator Switch (X116) is turned
on, a pulsing voltage is applied from the Flasher
Unit (Z128) to the Direction Indicator which is
permanently grounded by ground E201.
Trailer Indicator
With the Direction Indicator Switch (X116) turned
on, the Flasher Unit (Z128) also applies a pulsing
voltage to the Trailer Indicator which is permanently
grounded by ground E201.
SRS Indicators
The SRS Indicators are controlled by the Air Bag
Diagnostic Control Unit (Z151) and the SRS
Indicator Control Circuit of the Instrument Cluster
(Z142) to indicate SRS System faults.
Low Fuel Warning Indicator
When the fuel gauge senders resistance falls
below approximately 25 Ohms (6 liters/1.5 US
gallons), the Low Fuel Warning Indicator will
illuminate to warn the driver. The Low Fuel Warning
Indicator is grounded by a 3 second timer as a bulb
check.
Main Beam Indicator
With the Headlamps turned on the Main Lighting
Switch (X145), battery voltage is applied to the
Main Beam Indicator which is also permanently
grounded by ground E201.
Differential Lock Indicator
The Differential Lock Indicator receives battery
voltage with the Ignition Switch (X134) in position
II. It is grounded by the Differential Lock Switch
(X238) when the Differential is locked.
Fasten Seat Belt Indicator
The Fasten Seat Belt Indicator receives battery
voltage with the Ignition Switch (X134) in position
II.
The indicator is also grounded through the
Multifunction Unit (MFU) (Z148) and the Drivers
Seat Buckle Switch (X120).
If the Drivers Seat Belt is buckled the Drivers Seat
Belt Buckle Switch opens and the Indicator turns
off. 
						

							ELECTRICAL TROUBLESHOOTING MANUAL
ETM E3
Warnings and Indicators (NAS)
3
DISCOVERY
 X220
Hazard Switch
0.5 LGG
A
E3-11
Instruments
Z142
Instrument
Cluster
8 C207
0.5 BZ128
Flasher Unit
See Ground Dis-
tribution
1 C221
0.5 B10 C222
0.5 B
S207
356d
F 4
10 AP126
Fascia Fuse Box
1 C254
0.5 LGU
Warnings and
Indicators
C267
9463
0.5 G0.5 UW
12 C208
E201
C207 Direction Indica-
tor Lamps87 
						

							ELECTRICAL TROUBLESHOOTING MANUA L
E3 ETM
Warnings and Indicators (NAS)
4
DISCOVERY
0.5 RN
Z142
Instrument
Cluster
[13] Illumination
0.5 B1
E201
C221
[13]
0.5 RN
0.5 B8 C2070.5 B10 C222
7 9 C222
S207
Interior Lamps
Instruments
Warnings and
Indicators
See Ground Dis-
tribution 
						

							ELECTRICAL TROUBLESHOOTING MANUAL
ETM E3
Warnings and Indicators (NAS)
5
DISCOVERY
P126
Fascia Fuse Box15
10 A
Z142
Instrument
Cluster 0.5 LG
S214
15 C217
2 0.5 RS
1 C222
2 C222
Instruments
MALFUNCTION
INDICATOR LAMP
(CHECK ENGINE)5 C208F 14
Warnings and
Indicators
See Fuse Details
0.5 RS
10 C2430.5 RS
4 C243
Z132
Engine Control
Module (ECM)Z132
Engine Control
Module (ECM)
MFI±V8 300Tdi with EDCMFI±T16
300Tdi without
EDC
Not used
C209