11-1 Wiring Schematics
450 LXi
Owner Manual
~ 11-1-123 ~
Rev. “C”
Wiring Schematic 0089289 - Schematic, Wiring, Hyd, Rftop A/C, Elec. Ht, Ctl. - Page 2 of 5 -
Exploded View A
IGNITOR
+
- SE
PREHEATER
NOZZLE
FAN
MOTOR
COMBUSTION
SOLENOID
VALVE
THERMOSTAT
THERMOSTAT
NOZZLE
TEMP
SENSOR
FLAME
SENSOR
HEATER ASSEMBLY
SPARK
ENABLE
OPERATION
INDICATOR
PREHEAT
CIRCULATION
PUMP
SPARK
POWER
SOLENOID
VALVE
TEMP
FLAME
3
4
2
6
1
5
A
ON/OFF
CIRC
PUMP
RUN IN
GND
CIRC-PUMP-OUT
24V-PWR1
24V-PWR2
WEBASTO
CONTROL
ELECTRONICS
CIRC-PUMP
RUN-CMD
24V
CONTROL
POWER
1
C
HEATER-ON
2
1
Q1
Q2
Q3
Q4
IGNITION
DIAG1
F
DIAG2
2
3
GND
1
4
ECONO
MODE
FLAME
INDICATOR
D
SG-1572D
CONTROL UNIT
WEBASTO THERMO 230 COOLANT HEATER
6
2
1
8
DIAGNOSTIC
CONNECTOR
X4
A3 MODULE
I/O CTL MUX
21
C3
IGN-WEBASTO
5
C600
V
C241
A-ZONE
IGN-24V
IGNITION
BI-DIRECTIONAL
ISOLATOR RELAY
DELAY
BATTERY PDU
C608
12
2
C627
B
X2
A
C
D
BAY BLK6
IGN-WEBASTO
IGN-WEBASTO
(24V)
RED/WHT
BLU
ORG
GND
DIAG2
DIAG1
BRN
RED
BLK
ECONO-MODE
FLAME
IGN-WEBASTO (24V)
SPLICE 3
A-ZONE
FRAME
REAR PDU
BAY2
DC LOAD
2
3
4
F2
80A
24V-H
BATT PDU
F8 10A
F9 10A
F10 10A
J3
HEATER
HEATER BED+
HEATER DASH+
MODULE "F"
BLUE LOOP
HEATER KIT+
HEATER LR+
F3
80A
ST
F9 10A
F10 10A
BLUE LOOP
MODULE "E"
J3
4
3
ST
1
2
SIG
COM GND
COM GND
SIG
2
1
ST4
GND
X1
A
C
B
BAY BLK7
GND-A
WEBAS HT+2
WEBAS HT+1
WEBAS HT-
3
2
1
RED
RED/WHT
BRN
BLK13
F17 25A
F18 25A
A
BLK28
GND
BAY BLK8
12V
12V
D
X3
BAY BLK5
B
A
C
4
WEB ON/OFF
WEB ON/OFF
CIRC-PUMP RUN
WEBAS-PUMP
HEATER-ON
CIRC-PUMP RUN
WEBAS PUMP
HEATER-ON
BLK
ORG
BLK
BLU
30
87
85
86
K4
ENGINE
BLK31
BATT PDU
12V-H
24V
12V
GND
F7 80A
24V
24V
12V
12V
GND
TO
TO
BATT PDU
GND
TO
24V
F19 10A
12V
F10 10A
S8
SHOWER
FAN RLY
PRIV FAN
FAN
BED
FAN
BATH
PRIV
FAN
J1
J1
00-00838-410
00-00838-410
FUEL
OVERTEMP
COOLANT
MANUAL
RESET
THERMOSTAT
DIAG1
DIAG2
FLAME
ECONO-MODE
GND
COOLANT
CIRCULATION
PUMP
10
11
D
SPLICE
BLK25
HEATER
BATH-
BLK10
SPLICE
23
SPLICE
24
HTR BATH+
HTR BATH-
BAY
BLK5B
WEBAS PUMP+
WEBAS HT-B
BLK5B
BAY
GND
WEBASTO
PUMP
BLK28
WEBAS HT-
WEBAS HT+2
WEBAS HT+1
SPLICE
RLY
ST2
GND
12V
SPLICE
BLK21
ST1
F
12V
GND
BED-
HEATER
BLK4
6
5
BLK23
5
6
BLK52
6
5
DASH
FAN
BLK21
12V
GND
ST1
SPLICE
HEATER
DASH-
E
BLK4
3
4
BLK26
3
4
BLK23
1
2
LR-BR
RGT HARN
RGT HARN
LR-BR
BAY LOAD
CTR HARN
CTR HARN
BAY LOAD
BAY MUX
HARN
BAY LOAD
CTR HARN
FAN
BLK23
12V
ST2
CTR HARN
BAY LOAD
SPLICE
HEATER
LR-
M
BLK8
9
10
RGT HARN
BLK63
LR-BR
11
12
BLK41
1
2
GND
LIV-RM
KIT
FAN
BAY LOAD
CTR HARN
GND
KIT-
HEATER
SPLICE
BLK25
E
ST2
12V
13
12
BLK10
RGT HARN
BLK67
LR-KIT
15
14
BLK51
2
1
BAY MUX
HARN
FAN
BAY2A
SPLICE
29
BAY2 HTR+
BAY2 HTR
BLK11
BAY2A HTR-
BAY2A HTR+
SPLICE
FAN
BAY1
BAY1 HTR+
BAY1 HTR-
BAY2
8
BLK4A
1
2
2
1
BLK4
BAY
BAY
10K HTR
5K HTR
10K HTR
10K HTR
10K HTR
10K HTR
5K HTR
5K HTR
BATH+
BLK54
HARN
LR-KIT
BLK51
12
13
1
2
14
13
BLK30
BLK59
2
1
LR-BATH
HARN
HTR
BATH+B
HTR
BATH-B
HTR
BATH+A
HTR
BATH-A
BAY MUX
HARN
BAY LOAD
CTR HARN
HARN
CTR HARN
HARN
HARN
HARN
GND-A
WEBAS HT+1
WEBAS HT+2
(24V)
DRIVER
ELECTRICAL
BAY
IGN-24V
IGN-WABASTO
GND
BUSBAR
BB3-2
BATTERY PDU
GND
PREHEAT
P2
(NOT USED)
CHASSIS MULTIPLEX
LOCATED IN BAY 3.
LAV TST SIG-
LAV TST SIG+
PRIV LAV
HYDRONIC
THERMOSTAT
HEATER
BLK??
WEBASTO HYDRONIC HEATER
HYDRONIC CONVECTOR FANS
4
5
A
B
C
D
E
F
G
H
6
7
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