Legend To Wiring Diagrams - Webasto Thermo Pro 90 Series Service Installations

Thermo Pro 90

11.16 Legend to wiring diagrams

Item
A1 Heater
A2 Control unit
ATS Exhaust gas temperature sensor
B4 Room thermostat
BA Operating indicator
BM Burner motor
DP Fuel pump
F1 Fuse 20A
F2 Fuse 1 A
F3 Fuse 20 A
FZG Vehicle blower
GS Glow plug
H1 Symbol on display
H2 LED
H5 Bulb/LED
K5 Relay with free-wheeling diode
P MultiControl / SmartControl
P1 SmartControl
S4 Switch
S5 Switch
S6 Switch, 1 or 2-pin
S7 Battery disconnector
S10 Electronic battery disconnect switch –
ÜHS Overheating protection
UP Coolant pump
V1 / V2 Diode
WTS Coolant temperature sensor
X1 4-pin plug connection
X2
X3
X4
2-pin plug connection
X5
X6
X7
X8 12-pin plug connection
Description
Thermo Pro 90 / Thermo Pro 90 HDD
–
PT2000
Optional
Light 0.15 W to max 2 W
Combustion air fan
Fuel pump for heater
Blade fuse DIN 72581-3
–
–
–
(green, blue, white, red) Operating indicator, ready indicator,
ON indicator, fault list
ON indicator, pumping device (max. 500 mA)
Vehicle blower
(W-bus)
(W-bus)
On/Off (min. 500 mA)
Auxiliary drive / pumping device
ADR
Electronically controlled disconnector (max. 500 mA)
Sensor on heat exchanger
U4840 coolant pump
Min. 500 mA (optional, not included in wiring harness)
Coolant temperature in coolant circuit
Item BM to item A2
Item GS to item A2
Item DP to item A2
Item UP to item A2
Item WTS to item A2
Item ATS to item A2
Item ÜHS to item A2
Vehicle-specific wiring harness
11 Wiring diagrams
Remarks
1112