Land Rover Discovery Etm 1995 2nd Edition Rover Manual
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![Page 67
ELECTRICAL TROUBLESHOOTING MANUAL
ETM B5
Cruise Control
3
DISCOVERY
F 18
10 A
X115
Cruise Control
Switch
S219
S253
P126
Fascia Fuse Box
Z119
Rotary Coupler
4 C2036
3 C2845
4
0
10
Z121
Cruise Control
ECU 1 C262 5 C204
X266
Steering Wheel
Cruise Switches
[1] RES/DECEL
Depressed
[2] SET/ACCEL
Depressed
0.5 RW 0.5 UW HJ8
E200
0.5 WY
A
B5-6
B5-74 C262 5
0.5 WY
12 C209 2 0.5 RNInterior Lamps
Z119
Rotary Coupler
[1] 0 [2]0.5 W1 C2010
3 C2036
0[1]
PB
17 C20218
4 C201030.5 GR 0.5 YB 0.5 B
See Ground Dis-...](http://img.usermanuals.tech/thumb/2848/48430/w64_discovery-etm-1995-2nd-edition-rover-66.png "Page 67
ELECTRICAL TROUBLESHOOTING MANUAL
ETM B5
Cruise Control
3
DISCOVERY
F 18
10 A
X115
Cruise Control
Switch
S219
S253
P126
Fascia Fuse Box
Z119
Rotary Coupler
4 C2036
3 C2845
4
0
10
Z121
Cruise Control
ECU 1 C262 5 C204
X266
Steering Wheel
Cruise Switches
[1] RES/DECEL
Depressed
[2] SET/ACCEL
Depressed
0.5 RW 0.5 UW HJ8
E200
0.5 WY
A
B5-6
B5-74 C262 5
0.5 WY
12 C209 2 0.5 RNInterior Lamps
Z119
Rotary Coupler
[1] 0 [2]0.5 W1 C2010
3 C2036
0[1]
PB
17 C20218
4 C201030.5 GR 0.5 YB 0.5 B
See Ground Dis-...")
![Page 68
ELECTRICAL TROUBLESHOOTING MANUA L
B5 ETM
Cruise Control
4
DISCOVERY
21P126
Fascia Fuse Box
C204
C227
C227Without ABS With ABS
S2011X168
Stop Lamp
Switch
[1] Brake Pedal
Depressed
[2] Brake Pedal
Further De-
pressed 1X168
Stop Lamp
Switch
[1] Brake Pedal
Depressed
[2] Brake Pedal
Further De-
pressed 2.0 GO
215
F 1
15A
[1][2]
0
S2042
1.0 GP
[1]
C20630
1.0 GO
1 C2004
C20631 C2003
1.0 GP
Z206
Stop Lamp
Switch Sup-
pressor
With ABS
Stop Lamps
Z121
Cruise Control
ECU Stop Lamps
C284 5
Without ABS 1.0 GO HJ1...](http://img.usermanuals.tech/thumb/2848/48430/w64_discovery-etm-1995-2nd-edition-rover-67.png "Page 68
ELECTRICAL TROUBLESHOOTING MANUA L
B5 ETM
Cruise Control
4
DISCOVERY
21P126
Fascia Fuse Box
C204
C227
C227Without ABS With ABS
S2011X168
Stop Lamp
Switch
[1] Brake Pedal
Depressed
[2] Brake Pedal
Further De-
pressed 1X168
Stop Lamp
Switch
[1] Brake Pedal
Depressed
[2] Brake Pedal
Further De-
pressed 2.0 GO
215
F 1
15A
[1][2]
0
S2042
1.0 GP
[1]
C20630
1.0 GO
1 C2004
C20631 C2003
1.0 GP
Z206
Stop Lamp
Switch Sup-
pressor
With ABS
Stop Lamps
Z121
Cruise Control
ECU Stop Lamps
C284 5
Without ABS 1.0 GO HJ1...")
![Page 69
ELECTRICAL TROUBLESHOOTING MANUAL
ETM B5
Cruise Control
5
DISCOVERY
M
Z142
Instrument
Cluster
[1] Speedome-
ter
[12] Vehicle
Speed Out-
put 4 C221
S2002
E201 [1]
[12]
18 C209
Instruments 0.5 YK
11 1 7 681a 81 82a
8C167
C167
C284
C284M103
Cruise Control
Vacuum Pump
Z121
Cruise Control
ECU
S288
HJ5 0.5 B0.5 BY
0.5 BR 0.5 WU
See Ground Dis-
tribution
S2030
14 C205
1 C2062
Z148
Multi±Function
Unit (MFU) X241
Saudi Junction
Connector
1 C2062
0.5 Y
C209
30.5
Y
19 C20917
Not used](http://img.usermanuals.tech/thumb/2848/48430/w64_discovery-etm-1995-2nd-edition-rover-68.png "Page 69
ELECTRICAL TROUBLESHOOTING MANUAL
ETM B5
Cruise Control
5
DISCOVERY
M
Z142
Instrument
Cluster
[1] Speedome-
ter
[12] Vehicle
Speed Out-
put 4 C221
S2002
E201 [1]
[12]
18 C209
Instruments 0.5 YK
11 1 7 681a 81 82a
8C167
C167
C284
C284M103
Cruise Control
Vacuum Pump
Z121
Cruise Control
ECU
S288
HJ5 0.5 B0.5 BY
0.5 BR 0.5 WU
See Ground Dis-
tribution
S2030
14 C205
1 C2062
Z148
Multi±Function
Unit (MFU) X241
Saudi Junction
Connector
1 C2062
0.5 Y
C209
30.5
Y
19 C20917
Not used")
![Page 70
ELECTRICAL TROUBLESHOOTING MANUA L
B5 ETM
Cruise Control (Automatic Transmission)
6
DISCOVERY
S2005
HJ2
S322
X167
Park/Neutral
Position Switch 0.5 BY86
8530
87a 87
4 C3235 C323 10 C1052 C218 85 C2021
8 87aC2021 30 86
C2005 2
C284 9C2005 1
1 C274X112
Brake Switch
Vent Valve
[1] Brake Pedal
Depressed
Z121
Cruise Control
ECUK110
Cruise Control
Lockout Relay Z186
Cruise Control
Diode
Z163
Theft Alarm Unit0.5 BY
0.5 BY
B
0.5 BG
0.5 BO0.5 PG 0.5 PY 0.5 WS 0.5 WS
Starting and
Charging
0.5 WY
A
B5-3
0 [1]
D321...](http://img.usermanuals.tech/thumb/2848/48430/w64_discovery-etm-1995-2nd-edition-rover-69.png "Page 70
ELECTRICAL TROUBLESHOOTING MANUA L
B5 ETM
Cruise Control (Automatic Transmission)
6
DISCOVERY
S2005
HJ2
S322
X167
Park/Neutral
Position Switch 0.5 BY86
8530
87a 87
4 C3235 C323 10 C1052 C218 85 C2021
8 87aC2021 30 86
C2005 2
C284 9C2005 1
1 C274X112
Brake Switch
Vent Valve
[1] Brake Pedal
Depressed
Z121
Cruise Control
ECUK110
Cruise Control
Lockout Relay Z186
Cruise Control
Diode
Z163
Theft Alarm Unit0.5 BY
0.5 BY
B
0.5 BG
0.5 BO0.5 PG 0.5 PY 0.5 WS 0.5 WS
Starting and
Charging
0.5 WY
A
B5-3
0 [1]
D321...")
![Page 72
ELECTRICAL TROUBLESHOOTING MANUA L
B5 ETM
Cruise Control (Manual Transmision)
8
DISCOVERY
0.5 PW
0 [1]
B
B5-7
0 [1]
1 C2035
1 C2005
9 C284X200
Clutch Pedal
Position Switch
[1] Clutch
Pedal De-
pressed
X112
Brake Switch
Vent Valve
[1] Brake Pedal
Depressed
Z121
Cruise Control
ECU 2 C2035
2 C2005 7 C218
8 C218 0.5 P
0.5 PY
0.5 PG 0.5 P](http://img.usermanuals.tech/thumb/2848/48430/w64_discovery-etm-1995-2nd-edition-rover-71.png "Page 72
ELECTRICAL TROUBLESHOOTING MANUA L
B5 ETM
Cruise Control (Manual Transmision)
8
DISCOVERY
0.5 PW
0 [1]
B
B5-7
0 [1]
1 C2035
1 C2005
9 C284X200
Clutch Pedal
Position Switch
[1] Clutch
Pedal De-
pressed
X112
Brake Switch
Vent Valve
[1] Brake Pedal
Depressed
Z121
Cruise Control
ECU 2 C2035
2 C2005 7 C218
8 C218 0.5 P
0.5 PY
0.5 PG 0.5 P")
ELECTRICAL TROUBLESHOOTING MANUAL ETM B5 Cruise Control (Manual Transmision) 7 DISCOVERY Z140 Ignition Coil 0.7 WB1 C155 Z164 Speed Trip Mod- ule 30 B5-3 U 1 C156 5 C2174 C218 1 C218 0.5 WS 0.5 WU 86 C2021 87 C202130 85 0.5 PW 0.5 B 3 C218 6 B B5-8 K115 Multiport Fuel In- jection Ignition Resistor 1 K168 Multiport Fuel In- jection Ignition Resistor 20.5 WU 0.5 WB 0.5 WY Z186 Cruise Control Diode E20186 85 87 S2015 HJ11See Ground Dis- tribution6.8 KW 6.8 KW1± Multiport Fuel In- jection (MFI±V8) A MFI±V8
ELECTRICAL TROUBLESHOOTING MANUA L B5 ETM Cruise Control (Manual Transmision) 8 DISCOVERY 0.5 PW 0 [1] B B5-7 0 [1] 1 C2035 1 C2005 9 C284X200 Clutch Pedal Position Switch [1] Clutch Pedal De- pressed X112 Brake Switch Vent Valve [1] Brake Pedal Depressed Z121 Cruise Control ECU 2 C2035 2 C2005 7 C218 8 C218 0.5 P 0.5 PY 0.5 PG 0.5 P
CRUISE CONTROL 9 ETM B5 DISCOVERY ELECTRICAL TROUBLESHOOTING MANUAL TROUBLESHOOTING HINTS 5. If the cruise control system operates but the cruise control switch light does not illuminate, check the bulb, B wire and RN wire. 6. Inspect vacuum hoses for kinks and restrictions. 7. Inspect actuator linkage for restrictions and adjustment. SYSTEM DIAGNOSIS 1. If the cruise control system does not operate correctly and the vehicle is equipped with a manual transmission, do Test A. 2. If the cruise control system does not operate correctly and the vehicle is equipped with an automatic transmission, do Test B.
ELECTRICAL TROUBLESHOOTING MANUA L B5 ETM Cruise Control 10 DISCOVERY Z121 Cruise Control ECU Z121 Cruise Control ECU R150001 R150001 #)( # %!(!%$ +!( $!(!%$ +!( $!(!%$ +!( ) , &)! %$(&%# +!( , !& , !& , Cruise Control Switch &)! %$(&%# +!( & +!( $( #* $ !$ &)$$!$ (
ELECTRICAL TROUBLESHOOTING MANUAL
ETM B5
Cruise Control
11
DISCOVERY
X112
Brake Switch
Vent Valve
X200
Clutch Pedal
Position Switch
$ )
)
Brake Switch
Vent Valve
)
$
)
Clutch Pedal
Position Switch
)
$
& # ( &
& # ( &
!& ! #% & # ( &
$ % #&$#! ( &
$ % #&$#! ( &
$
$
ELECTRICAL TROUBLESHOOTING MANUA L
B5 ETM
Cruise Control
12
DISCOVERY
Z164
Speed Trip Module
Z164
Speed Trip Module
*
%
*
%
# )
# )
%
Speed Trip Module *
*
*
(! $#% ( !
#
#
& &#% %( & #%#! )
*
%
%(
*
Cruise Control
Diode
ELECTRICAL TROUBLESHOOTING MANUAL
ETM B5
Cruise Control
13
DISCOVERY
Z121
Cruise Control
ECU
Z121
Cruise Control
ECU
R150001
R150001
# $# *
# $# *
(& +
%( & $#%$ *
+
%
+
%
+
Cruise Control
Switch
%( & $#%$ *
%! * # )
% $%
&
ELECTRICAL TROUBLESHOOTING MANUA L
B5 ETM
Cruise Control
14
DISCOVERY
X112
Brake Switch
Vent Valve
# (
(
Brake Switch
Vent Valve
K110
Cruise Control
Lockout Relay
! % ! %
#& $ !%# %
# %#
! % ! %
# (
#& $ !%# %
(
Cruise Control
Diode (
#
ELECTRICAL TROUBLESHOOTING MANUAL ETM B5 Cruise Control 15 DISCOVERY K110 Cruise Control Lockout Relay , !& , Cruise Control Lockout Relay Z121 Cruise Control ECU R150001 #!(!$# *!( #!(!$# *!( & ($& *!( , , !& Park/Neutral Position Switch &)! $#(&$ *!( , , !& $( &+ $)% & , !& , Steering Wheel Cruise Switches , !& ( ( &!# &)! *!(
ELECTRICAL TROUBLESHOOTING MANUA L
B5 ETM
Cruise Control
16
DISCOVERY
Z121
Cruise Control
ECU
Z121
Cruise Control
ECU
R150001
R150001
# $# )
% *
%!
* *
(&
Stop Lamp
Switch
# $# )
% *
% *