Land Rover Discovery Etm 1995 2nd Edition Rover Manual
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![Page 106
1 C370
ELECTRICAL TROUBLESHOOTING MANUA L
E1 ETM
Instruments
2
DISCOVERY
See Fuse Details
See Fuse Details5 C208 7 C204
3 C370
0.5 BR
2 C105
5 C209
2 C2210.5 LG
S2049
S214
2 C222
A
B
P126
Fascia Fuse Box
Z142
Instrument
Cluster
[1] Speedome-
ter
[11] Vehicle
Speed Input
[12] Vehicle
Speed Out-
put X190
Vehicle Speed
Sensor
E1-4
E1-4
4 C221
0.5 YK15
F 14
10 A
[1]
[12] [11]
C
E1-30.5 LG](http://img.usermanuals.tech/thumb/2848/48430/w64_discovery-etm-1995-2nd-edition-rover-105.png "Page 106
1 C370
ELECTRICAL TROUBLESHOOTING MANUA L
E1 ETM
Instruments
2
DISCOVERY
See Fuse Details
See Fuse Details5 C208 7 C204
3 C370
0.5 BR
2 C105
5 C209
2 C2210.5 LG
S2049
S214
2 C222
A
B
P126
Fascia Fuse Box
Z142
Instrument
Cluster
[1] Speedome-
ter
[11] Vehicle
Speed Input
[12] Vehicle
Speed Out-
put X190
Vehicle Speed
Sensor
E1-4
E1-4
4 C221
0.5 YK15
F 14
10 A
[1]
[12] [11]
C
E1-30.5 LG")
![Page 108
ELECTRICAL TROUBLESHOOTING MANUA L
E1 ETM
Instruments
4
DISCOVERY
15
F 14
10 AP126
Fascia Fuse Box
5 C208
See Fuse De-
tails
S214
0.5 LG
2 C2152 C217Starting and
Charging 1 C163
0.5 WS0.5
WS K184
Phase Tap Resis-
torZ106
Generator
Z182
Generator Sup-
pression Capaci-
torW
2.2 F
Z142
Instrument
Cluster
[2] Tachometer
[5] SRS Indica-
tor Control 7
5 C207
[2] [5]
1 C221 10 C222
See Ground Dis-
tribution0.5 B 0.5 B
S207
E200
D A
E
BE1-5
E1-2
E1-5 E1-20.5 WS820
1 C147 Petrol Diesel
With SRS Without SRS...](http://img.usermanuals.tech/thumb/2848/48430/w64_discovery-etm-1995-2nd-edition-rover-107.png "Page 108
ELECTRICAL TROUBLESHOOTING MANUA L
E1 ETM
Instruments
4
DISCOVERY
15
F 14
10 AP126
Fascia Fuse Box
5 C208
See Fuse De-
tails
S214
0.5 LG
2 C2152 C217Starting and
Charging 1 C163
0.5 WS0.5
WS K184
Phase Tap Resis-
torZ106
Generator
Z182
Generator Sup-
pression Capaci-
torW
2.2 F
Z142
Instrument
Cluster
[2] Tachometer
[5] SRS Indica-
tor Control 7
5 C207
[2] [5]
1 C221 10 C222
See Ground Dis-
tribution0.5 B 0.5 B
S207
E200
D A
E
BE1-5
E1-2
E1-5 E1-20.5 WS820
1 C147 Petrol Diesel
With SRS Without SRS...")
![Page 109
ELECTRICAL TROUBLESHOOTING MANUAL
ETM E1
Instruments
5
DISCOVERY
Z142
Instrument
Cluster
[3] Fuel Gauge
[4] Temperature
Gauge
[8] CPU
[10] Low Fuel
Warning
and Anti-
slosh Con-
trol
See Ground Dis-
tributionS207 0.5 GU 3 C221[10] E1-4
E1-4
[3][4][8]
Warnings and
Indicators Warnings and
Indicators
Warnings and
Indicators
8 C222
15 C215
1 C217
1 C151
X114
Engine Coolant
Temperature
Gauge Sensor 0.5 GB
6
13 C277
2 C407
1.0 GB
1 C434
Z134
Fuel Pump Mod-
ule
[1] Fuel Level
Sensor [1]
2.5 B2 C434
1.0 B
See...](http://img.usermanuals.tech/thumb/2848/48430/w64_discovery-etm-1995-2nd-edition-rover-108.png "Page 109
ELECTRICAL TROUBLESHOOTING MANUAL
ETM E1
Instruments
5
DISCOVERY
Z142
Instrument
Cluster
[3] Fuel Gauge
[4] Temperature
Gauge
[8] CPU
[10] Low Fuel
Warning
and Anti-
slosh Con-
trol
See Ground Dis-
tributionS207 0.5 GU 3 C221[10] E1-4
E1-4
[3][4][8]
Warnings and
Indicators Warnings and
Indicators
Warnings and
Indicators
8 C222
15 C215
1 C217
1 C151
X114
Engine Coolant
Temperature
Gauge Sensor 0.5 GB
6
13 C277
2 C407
1.0 GB
1 C434
Z134
Fuel Pump Mod-
ule
[1] Fuel Level
Sensor [1]
2.5 B2 C434
1.0 B
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ELECTRICAL TROUBLESHOOTING MANUAL ETM E1 Instruments 7 DISCOVERY $% ! % ! % Z142 Instrument Cluster # ( ( &$ Z142 Instrument Cluster ! % ! % # ( ( Instrument Cluster
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ELECTRICAL TROUBLESHOOTING MANUAL
ETM E1
Instruments
9
DISCOVERY
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ELECTRICAL TROUBLESHOOTING MANUA L
E1 ETM
Instruments
10
DISCOVERY
K184
Phase Tap Resis-
tor
#
#
#
Phase Tap Resis-
torGenerator
# ! ! #
Tachometer
WARNINGS AND INDICATORS 1 ETM E2 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. On Australian vehicles the brake warning light is grounded by a 3 second timer as a bulb check. 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). On Australian vehicles the warning light is grounded by a 3 second timer as a bulb check. 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. Diesel Glow Plug Indicator The Glow Plug Indicator is grounded by the Glow Plug Timer Unit (Z135) to indicate that the Glow Plugs have been activated.
WARNINGS AND INDICATORS 2 E2 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 E200. 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 E200. 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 E200. SRS Indicators The SRS Indicators are controlled by the Air Bag Diagnostic Control Module (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. 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 E200. Catalyst Warning Indicator (Japan Vehicles Only) In case of a catalyst overheat, the catalyst thermocouples send a signal to the Catalyst Warning ECUs which then provide battery voltage to the Catalyst Warning Relay (K172). The relay is energized and provides ground to the Catalyst Warning Indicator. The Catalyst Warning Indicator is also grounded by a 3 second timer as a bulb check. 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 (Except Japan Vehicles Only) The Fasten Seat Belt Indicator receives battery voltage with the Ignition Switch (X134) in position II. The indicator is also grounded through the Multi± Function 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 E2 Warnings and Indicators 3 DISCOVERY 0.5 LGG A E2-12 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 56d F 4 10 AP126 Fascia Fuse Box 1 C254 0.5 LGU Warnings and Indicators 9463 0.5 G0.5 UW 12 C208 E200 C207 Direction Indica- tor LampsW/L
ELECTRICAL TROUBLESHOOTING MANUA L E2 ETM Warnings and Indicators 4 DISCOVERY 0.5 RN Z142 Instrument Cluster [13] Illumination 0.5 B1 E200 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 E2 Warnings and Indicators 5 DISCOVERY P126 Fascia Fuse Box15 10 A Z142 Instrument Cluster 0.5 LG S214 15 C217 2 0.5 RS 1 C222 12 C217 2 C159 6 C209 0.5 PO 7 C221 Z135 Glow Plug Timer Unit 2 C222 Instruments MALFUNCTION INDICATOR LAMP (CHECK ENGINE) Diesel 5 C208F 14 L 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) 0.5 BY MFI±V8 300Tdi with EDCMFI±T16 300Tdi without EDC Not used
ELECTRICAL TROUBLESHOOTING MANUA L E2 ETM Warnings and Indicators 6 DISCOVERY P126 Fascia Fuse Box Z148 Multi±Function Unit (MFU) 5 15 10 A Z142 Instrument Cluster 0.5 LG S214 0[1] X149 Oil Pressure Switch [1] 0.19±0.40 Bar (2.75±5.75 psi) 3 C204 1 C142 14 C208 0.5 WN P126 Fascia Fuse Box 2 C222 Instruments Warnings and Indicators5 C208F 14 A C222 0[1]X238 Differential Lock Switch [1] Transfer Box in Diff Lock 18 C215 0.5 BO 6 C221 1 C373 1.0 WN 0.7 WN 0.5 WN 3 C217300Tdi with EDC MFI±V8 300Tdi without EDC MFI±T16 0.5 WN 1 C105 0.5 BU S343 1 C374 0.5 B E201 See Ground Dis- tribution See Fuse Details