9 Thermo Pro 90 HDD
Thermo Pro 90
904
9.6
Control unit
NOTE
For Thermo Pro 90 HDD control unit with retaining spring.
The retaining spring must not be removed when replacing/in-
stalling the control unit and should be fitted as an assembly
with the control unit on the heater.
CAN-Offboard diagnostics
Use similar to W-bus diagnostics with SAEJ1939-compliant
diagnostic tools as per Webasto specification.
9.7
Electrical components
NOTE
A minimum bending radius of 110 mm must not be exceeded
when using the WDT wiring harness (ID: 9029629_). Avoid
mechanical stress at the connection areas.
ATTENTION
The heater must
not
be operated in systems with system vol-
tages stipulated in the standard MIL-STD-1275D 5.3.2.4
(generator-supported systems with voltage peaks up to 100
V).
9.8
Thermo Pro 90 HDD wiring diagrams
See “11 Wiring diagrams” on Page 1101.
9.8.1 Legend to connector VG95328R2016PN (if installed)
Fig. 904 Thermo Pro 90 HDD control unit
Fig. 905 Connector VG95328R2016PN (if installed)
VG Remarks
A
Output, vehicle fan relay
B
Operating indicator/error code
output
C
W-bus
D
Power supply (terminal 30)
E
Power supply (terminal 30)
F
Power supply (terminal 31)
G
Power supply (terminal 31)
H
Terminal D+
VG Remarks
J
Auxiliary drive
K
Input switch-on signal (ON/OFF)
L
Output, battery disconnector
afterrunning signal
M
CAN GND
N
CAN LOW
P
CAN HIGH
R
Not used
S
Not used
