Webasto thermo top evo Workshop Manual page 35

Thermo Top Evo
7 Circuit diagrams
Fig. 701 shows the circuit of the Thermo Top Evo heater, parking heater and heater control.
Legend for wiring diagram.
Cable colours
bl blue
br brown
ge yellow
gn green
gr grey
or orange
rt red
sw black
vi violet
ws white
Item Description
1
present in vehicle
2
Fan controller
3
Air-conditioning control unit
4
Aerial
5
Plug connection
6
Indicator for vehicle engine
running (in-line operation of
solenoid coolant valve)
7
Low active auxiliary heating
request
ϑ
Outside temperature
X1 6-pin connector
X2 2-pin connector
X3 4-pin connector
X4 2-pin connector
X5 2-pin connector
X6 2-pin connector
X7 2-pin connector
X8 2-pin connector
X9 2-pin connector
X10 4-pin connector
X11 4-pin connector
X12 4-pin connector
X13 4-pin connector
X14 6-pin connector
X15 2-pin connector
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Comment
Vehicle fan
View of Line Side
Optional
Must be activated with a
data record
Optional
Must be activated with a
data record
Gnd/0 V = ON
open or no signal or
U > 6 V = OFF
Vehicle signal
Power supply
Temperature sensors
Circulating pump
Glow plug
not in use
Metering pump
Diagnosis plug
Diagnosis bridge
Heater controls
Heater controls
Temperature sensor for W
bus
Temperature sensor for W
bus
Telestart T91/T100 HTM
Solenoid coolant valve
Changeover to in-line op-
eration of solenoid coolant
valve only in conjunction
with 12 V signal on Pin 1
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Item Description
X16 2-pin connector
X17 4-pin connector
X18 4-pin connector
A1 Heater
A2 Control unit
A3 Digital timer 1533
A4 Telestart T91
A5 Telestart T100 HTM
A6 Fuse holder
A7 W bus temperature sensor
A8 IPCU
A9 Relay socket with fuses
A10 Telestart button
F1 Fuse
F2 Fuse
F3 Fuse
F4 Fuse
B1 Temperature sensor
B2 Temperature sensor
M1 Motor
M2 Motor
M3 Vehicle fan
S1 Vehicle fan switch
S2 Vehicle fan switch
S3 Switch ON/OFF
S4 Switch for auxiliary heating
request
E Glow plug
Y1 Metering pump
Y2 Solenoid coolant valve
K1 Relay
7 Circuit diagrams
Comment
Circulating pump
Telestart button
Telestart button
Thermo Top Evo
Fan controller
20 A
30 A
1 A
25 A
Coolant temperature sen-
sor
Overheating
Combustion air fan
Circulating pump
Optional
DP 42
Fan relay
701