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

							ELECTRICAL TROUBLESHOOTING MANUAL
ETM T3
Theft Alarm System (NAS 1994)
7
DISCOVERY
T3-6
M132
Tailgate Lock
Actuator
AB
2 1 C414 1.0 O 1.0 K6 4 C415 1.0 O 1.0 K5 6 C277 1.0 O 1.0 K
OK
M 
						

							ELECTRICAL TROUBLESHOOTING MANUA L
T3 ETM
Theft Alarm System (NAS 1994)
8
DISCOVERY
[1][2]
M114
Left Front Door
Lock Actuator
[1] Lock
[2] UnlockZ163
Theft Alarm Unit
See Ground Dis-
tributionC225 62
0.5 YK
0.5 GB
5 4 C507
0.3 B
3 C507
0.5 B
S501
E201
6 C502
Not used6 C602
Not used 
						

							ELECTRICAL TROUBLESHOOTING MANUAL
ETM T3
Theft Alarm System (NAS 1994)
9
DISCOVERY
Z163
Theft Alarm Unit
Z148
Multi±Function
Unit (MFU)
X212
Alarm Bonnet
Switch
[1] Open X201
Left Front Door
Key Switch
[1] Key turned
[2] Key out
See Ground Dis-
tributionSee Ground Dis-
tribution 371 12 C225
3 C602
S5014 C504 1 C1782 C1784 C205
0.5 UG
3 C502
1 C504
0.5 B
E201E200 0.5 BB 0.5 PO0.5 PW 0.5 KB
S204 [2] [1]
0[1]
HJ3
Not used
S2013
Z147
Window Lift ECU
7 C287
0.5 PW 
						

							ELECTRICAL TROUBLESHOOTING MANUA L
T3 ETM
Theft Alarm System (NAS 1994)
10
DISCOVERY
30
F 6
20 A
See Fuse Details
P128
Satellite Fuse
Box 2
B151
Theft Alarm LED
Z163
Theft Alarm Unit 14 C2254 C209 0.5 RW2 C269 1 C269 0.5 P S2061Z163
Theft Alarm Unit
0.5 WB80.5 BN15 C225
1615 C277
X213
Alarm Sensor
31 C483
0.5 B2 C483
E401
See Ground Dis-
tribution 
						

							ELECTRICAL TROUBLESHOOTING MANUAL
ETM T3
Theft Alarm System (NAS 1994)
11
DISCOVERY
85
1
 
Starting and
Charging
Starting and
Charging
Automatic Trans-
missionManual Trans-
missionK137
Starter Solenoid
Relay
Z158
Starter Relay
Diode
X167
Park/Neutral
Position Switch K110
Cruise Control
Lockout Relay
85
30 C2006 0.5 WR 3.0 NW
8630
87
86 87 C2006
0.5 BO
0.5 BY
S2005
HJ2
10 C105 Automatic Trans-
mission
0.5 BY
11 C105
0.5 BO
1 C274
Z163
Theft Alarm Unit 0.5 BY
S322
5 C323
B
0.5 BG
4 C323
0.5 BO
R
N P
2
3
D
85
85 C2021
0.5 BY
2 C218
2.0 NR
Starting and
Charging
Starting and
Charging
1 
						

							ELECTRICAL TROUBLESHOOTING MANUA L
T3 ETM
Theft Alarm System (NAS 1994)
12
DISCOVERY
See Fuse Details
Z163
Theft Alarm Unit
3 C274 0.5 POS245
Horns
86 C283
3085 C283
30 85
86 87K189
Horn Relay
87
1.5 PG
0.5 POS2057
2 C168
1 C168K128
Left Horn
E201
See Ground Dis-
tribution
K134
Right Horn
E200
2 C169
1 C169
30
F 4
20 AP125
Engine Compart-
ment Fuse Box
4 C101
1.5 PN
S103
See Ground Dis-
tribution 
						

							ELECTRICAL TROUBLESHOOTING MANUAL
ETM T3
Theft Alarm System (NAS 1994)
13
DISCOVERY
30
F 2
20 A
CT3-14
DT3-14
P127
Satellite Fuse
Box 1
S275
1.0 PU
C279 86 30
86
8530
87a 87
85 87a C279
0.5 BK
11 C225E200 1.0 PU
Z163
Theft Alarm Unit
See Fuse Details
1.0 GW
S2019
HJ61.5
GW
0.5 GW
1 C123
B137
Right Repeater
Lamp
2 C123
0.7 GW
2 C1010
1 C1010
0.5 B
S2016
See Ground Dis-
tributionB154
Right Front Indi-
cator LampK159
Theft Alarm
Relay
0.5 GR
S2020
HJ6
0.7 GRC124 1
B122
Left Repeater
Lamp
C124 2
0.7 B
S2033
E201
See Ground Dis-
tribution 0.5 B1.0 GR87
0.5 B
HJ10
HJ111.5
GR
2 C1009
1 C1009B153
Left Front Indica-
tor Lamp 
						

							ELECTRICAL TROUBLESHOOTING MANUA L
T3 ETM
Theft Alarm System (NAS 1994)
14
DISCOVERY
CT3-13Direction Indica-
tor Lamps
1.5 GW
S239
C204 14 161.5 GR
S241 1.5
GWDT3-131.5
GR
KLP126
Fascia Fuse Box
Z148
Multi±Function
Unit (MFU)
B165
Right Rear Indi-
cator Lamp 6 C211 4 C211
1.5 GW 1.5 GR
S432 192 C277
S405
3 C400
1.5 B
S423
E400 E401 S4241.5 B2 C445 1 C445Auxiliary Lamps
Enabled with
Main Lighting
Switch in Main
Beam or Dip
Beam PositionAuxiliary Lamps
Enabled with
Main Lighting
Switch in Main
Beam Position
Right Direction
Indicator LampsLeft Direction
Indicator Lamps
4
See Ground Dis-
tributionSee Ground Dis-
tribution
B163
Left Rear Indica-
tor Lamp
2 C442 1 C442 
						

							THEFT ALARM SYSTEM (NAS 1994)
15
ETM T3
DISCOVERY
ELECTRICAL TROUBLESHOOTING MANUAL
TROUBLESHOOTING HINTS
13. Check Fuses F1, F2 and F5 in Satellite Fuse
Box 1.
14. Check Fuse F5 in Satellite Fuse Box 2.
15. If the interior lights do not come on when a
door is open, check suspect door switch and
associated wiring.
16. If all of the lock actuators do not operate,
check O and K  Wire. If OK, replace Theft
Alarm Unit (Z163).
SYSTEM DIAGNOSIS
1. If the system will not arm, do Test A.
2. If the system arms, but will not trigger at all, do
Test D.
3. If the Horns (K128, K134) do not sound when
triggered, do Test D.
4. If the hazard lights do not flash when triggered,
do Test H.
5. If the system will not trigger when the bonnet is
open, do Test I.
6. If the alarm is set using the remote and the
system does not trigger the alarm when there
is motion inside the vehicle, do Test J.
7. If the Theft Alarm LED (B151) does not
operate, do Test E.
8. If the Horns (K128, K134) sound continuously,
do Test G.
9. If the system will not disarm, do Test A.
10. If a Front Door Lock Actuator (M114, M122)
does not operate, do Test K.
11. If the doors unlock themselves after operating
the door locks, do  Test L.
12. If the central locking function does not operate
from one of the front doors, do  Test M.
13. If the Tailgate Lock Actuator (M132) does not
operate, do Test N.
14. If both Rear Door Lock Actuators (M117,
M125) do not operate, do Test O. 
						

							ELECTRICAL TROUBLESHOOTING MANUA L
T3 ETM
Theft Alarm System (NAS 1994)
16
DISCOVERY
! 






Z163
Theft Alarm Unit

	


	



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 	Z163
Theft Alarm Unit

	

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