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Land Rover Range Rover Classic Etm 1995 2nd Edition Exp Rover Manual
Land Rover Range Rover Classic Etm 1995 2nd Edition Exp Rover Manual
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![Page 284
ELECTRICAL TROUBLESHOOTING MANUAL
ETM K2
Compressor Controls (Diesel)
5
1995 RANGE ROVER
30
F 3
30 A
1C116
E100
See Fuse DetailsP125
Engine Compart-
ment Fuse Box
1.0 NG
30
30
86 C241
0.5 G
11 C217
2 C162
K108
Compressor
Clutch Relay
X259
Compressor
Clutch Cut±out
Switch
16 C217
See Ground Dis-
tribution
0.5 WG
85 C241
87
87
1.0 BG18 C217
B
K2-3
1 C162
0.5 YB
0.5 YB
9 C2073
0.5 G
1 C2076
X101
Front A/C Evap-
orator Tempera-
ture Switch
[1] > 0C (32F)
[2] < 0C (32F)
8 C2073
1 C2077
0.5 L
0.5 NO
6...](http://img.usermanuals.tech/thumb/2848/48613/w64_range-rover-classic-etm-1995-2nd-edition-exp-rover-283.png "Page 284
ELECTRICAL TROUBLESHOOTING MANUAL
ETM K2
Compressor Controls (Diesel)
5
1995 RANGE ROVER
30
F 3
30 A
1C116
E100
See Fuse DetailsP125
Engine Compart-
ment Fuse Box
1.0 NG
30
30
86 C241
0.5 G
11 C217
2 C162
K108
Compressor
Clutch Relay
X259
Compressor
Clutch Cut±out
Switch
16 C217
See Ground Dis-
tribution
0.5 WG
85 C241
87
87
1.0 BG18 C217
B
K2-3
1 C162
0.5 YB
0.5 YB
9 C2073
0.5 G
1 C2076
X101
Front A/C Evap-
orator Tempera-
ture Switch
[1] > 0C (32F)
[2] < 0C (32F)
8 C2073
1 C2077
0.5 L
0.5 NO
6...")
![Page 285
ELECTRICAL TROUBLESHOOTING MANUA L
K2 ETM
Compressor Controls
6
1995 RANGE ROVER
S2038
52 C2025
1.25 UR
10 C2067K2-3
2 C2022 2 C2067
See Ground Dis-
tribution
S263
1.0 UR
0.5 UR
Blower Controls
Interior Lamps
0.5 LG
01
13 C2025
0.5 WB
S244
E200
0.5
NBlower ControlsS2056
2.0 N
See Ground Dis-
tribution
E200
1 C2022
0III
III
IV
1 C2067
Cooling Fans
4 C20730.5 PB
1 C181
X102
A/C Dual Pressure Switch
[1] > 32 Bar (455 psi)
[2] < 2.07 Bar (30 psi) 0.5 NO
2 C181Diesel Petrol
[1] [2]
Z210
Condenser Fan Control...](http://img.usermanuals.tech/thumb/2848/48613/w64_range-rover-classic-etm-1995-2nd-edition-exp-rover-284.png "Page 285
ELECTRICAL TROUBLESHOOTING MANUA L
K2 ETM
Compressor Controls
6
1995 RANGE ROVER
S2038
52 C2025
1.25 UR
10 C2067K2-3
2 C2022 2 C2067
See Ground Dis-
tribution
S263
1.0 UR
0.5 UR
Blower Controls
Interior Lamps
0.5 LG
01
13 C2025
0.5 WB
S244
E200
0.5
NBlower ControlsS2056
2.0 N
See Ground Dis-
tribution
E200
1 C2022
0III
III
IV
1 C2067
Cooling Fans
4 C20730.5 PB
1 C181
X102
A/C Dual Pressure Switch
[1] > 32 Bar (455 psi)
[2] < 2.07 Bar (30 psi) 0.5 NO
2 C181Diesel Petrol
[1] [2]
Z210
Condenser Fan Control...")
COMPRESSOR CONTROLS 2 K2 ETM 1995 RANGE ROVER ELECTRICAL TROUBLESHOOTING MANUA L Compressor Control (Diesel) With the Ignition Switch (X134) in position II, battery voltage is applied to the Ignition Load Relay (K127). The relay is energized, applying battery voltage to the Compressor Clutch Relay (K108). When the Fan Speed Switch (X179) is turned to positions I, II, III, or IV and the Front A/C Switch (X225) is turned On, ground is provided to terminal 86 of the Compressor Clutch Relay (K108) through the closed contacts of the A/C Dual Pressure Switch (X102), The Front A/C Evaporator Temperature Switch (X101), and the Compressor Clutch Cut±out Switch (X259). The relay is energized, applying battery voltage to the Compressor Clutch (K107). Compressor Clutch operation is now controlled by the status of the A/C Dual Pressure Switch (X102), the Front A/C Evaporator Temperature Switch (X101) and the Compressor Clutch Cut±out Switch (X259). The Front A/C Evaporator Temperature Switch (X101) is fitted in the airflow out of the front evaporator to sense the temperaure of the exterior fins. Should ice begin to form, due to low temperature, the switch will open. The A/C Dual Pressure Switch (X102) monitors refrigerant pressure in the high pressure line, should pressure become too high or too low the switch will open. When one or more of these switches open, the ground supply to terminal 86 of the Compressor Clutch Relay (K108) will be interrupted. The relay de±energizes, removing battery voltage from the Compressor Clutch (K107), disengaging the Compressor.
ELECTRICAL TROUBLESHOOTING MANUAL ETM K2 Compressor Controls 3 1995 RANGE ROVER S274 15 F 18 10 A 5 C204 E200 See Fuse Details A K2-6 P126 Fascia Fuse Box 1.0 LGP 85 30 87a C2007 1.5 YO 15 C215 1 C251 K127 Ignition Load Relay X125 Fuel Flap Re- lease Switch S2271.5 WG87 B K2-4 Z211 Fan Timer Diode 0.5 GW 7 C2073 1.25 UR Cooling Fans See Ground Dis- tributionS229 1C116 See Fuse Details 3.0 NG 30 C2007 30 F 3 30 AP125 Engine Compart- ment Fuse Box 85 86 87 87a 86 K2-5Petrol Diesel 1.0 YO
ELECTRICAL TROUBLESHOOTING MANUA L K2 ETM Compressor Controls (Petrol) 4 1995 RANGE ROVER S296 30 F 3 30 A E100 See Fuse Details C217 30 8786 85 86 C241 1.0 BG 85 C241 87 0.5 BS 33 C24321 30 30 87 85 86 85 C242 86 C242 87 1.5 WG 18 C217 B K2-3 0.5 YB 11 C217 0.5 YB 9 0.5 G 0.5 L 1 C2076 K108 Compressor Clutch Relay Z132 Engine Control Module (ECM) 1 C2077 8 C2073 0.5 NO S295 6 C216 Not used 1 C145 2 C145B 1.0 B K107 Compressor Clutch See Ground Dis- tribution 1C116 0.5 GY P125 Engine Compart- ment Fuse Box C K2-6K170 A/C Logic Relay 1.0 NG [1] [2] 16 30 X101 Front A/C Evap- orator Tempera- ture Switch [1] > 0C (32F) [2] < 0C (32F) C2073
ELECTRICAL TROUBLESHOOTING MANUAL ETM K2 Compressor Controls (Diesel) 5 1995 RANGE ROVER 30 F 3 30 A 1C116 E100 See Fuse DetailsP125 Engine Compart- ment Fuse Box 1.0 NG 30 30 86 C241 0.5 G 11 C217 2 C162 K108 Compressor Clutch Relay X259 Compressor Clutch Cut±out Switch 16 C217 See Ground Dis- tribution 0.5 WG 85 C241 87 87 1.0 BG18 C217 B K2-3 1 C162 0.5 YB 0.5 YB 9 C2073 0.5 G 1 C2076 X101 Front A/C Evap- orator Tempera- ture Switch [1] > 0C (32F) [2] < 0C (32F) 8 C2073 1 C2077 0.5 L 0.5 NO 6 C216 Not used 1 C145 K107 Compressor Clutch 0 2 C145 B 1.0 B 85 86 C K2-6[1] [1] [2] S295
ELECTRICAL TROUBLESHOOTING MANUA L K2 ETM Compressor Controls 6 1995 RANGE ROVER S2038 52 C2025 1.25 UR 10 C2067K2-3 2 C2022 2 C2067 See Ground Dis- tribution S263 1.0 UR 0.5 UR Blower Controls Interior Lamps 0.5 LG 01 13 C2025 0.5 WB S244 E200 0.5 NBlower ControlsS2056 2.0 N See Ground Dis- tribution E200 1 C2022 0III III IV 1 C2067 Cooling Fans 4 C20730.5 PB 1 C181 X102 A/C Dual Pressure Switch [1] > 32 Bar (455 psi) [2] < 2.07 Bar (30 psi) 0.5 NO 2 C181Diesel Petrol [1] [2] Z210 Condenser Fan Control Diode 2 X179 Fan Speed SwitchX225 Front A/C Switch C K2-5 K2-4 0.5 YB 0.5 NW 1.0 NW 4 1.0 N 0.5 N 0.5 N 2 C2027 A 0.5 PB
COMPRESSOR CONTROLS 7 ETM K2 1995 RANGE ROVER ELECTRICAL TROUBLESHOOTING MANUAL TROUBLESHOOTING HINTS 6. If the Front Blower Motor (M101) does not operate normally, refer to Blower Controls, Section K1. 7. Check Fuse F3 of the Engine Compartment Fuse Box (P125) and Fuse F18 of the Fascia Fuse Box (P126). 8. Verify that refrigerant pressure is OK before preceeding with the following diagnostic text. SYSTEM DIAGNOSIS (PETROL) 1. If the A/C Compressor Clutch (K107) does not engage in any mode, do Test A. 2. If the Compressor Clutch (K107) remains engaged with the A/C off, do Test D. SYSTEM DIAGNOSIS (DIESEL) 1. If the A/C Compressor Clutch (K107) does not engage in any mode, do Test B. 2. If the Compressor Clutch (K107) remains engaged with the A/C off, do Test E.
ELECTRICAL TROUBLESHOOTING MANUA L K2 ETM Compressor Controls 8 1995 RANGE ROVER # % # # % # & $ ! & #! ! &K108 Compressor Clutch Relay K108 Compressor Clutch Relay #
ELECTRICAL TROUBLESHOOTING MANUAL ETM K2 Compressor Controls 9 1995 RANGE ROVER $!)!%$ +!) $!)!%$ +!) ! - $ & +!) - %#& ((% *) , %#& ((% *) ! - Compressor Clutch - $ !$ %$) +!) K108 Compressor Clutch Relay K108 Compressor Clutch Relay
ELECTRICAL TROUBLESHOOTING MANUA L K2 ETM Compressor Controls 10 1995 RANGE ROVER #&$# & ! #&$# & ! % ( % (K170 A/C Logic Relay Z132 Engine Control Module (ECM) R400002
ELECTRICAL TROUBLESHOOTING MANUAL ETM K2 Compressor Controls 11 1995 RANGE ROVER % ! % % ! % Engine Control Module (ECM) ( ! #$$!# &% # ( K170 A/C Logic Relay ( A/C Logic Relay K170 A/C Logic Relay ! #$$!# &%