Table of Contents
Advertisement
Air Top 2000
8.8
Installation of new Control Units
CAUTION
When replacing the control unit the following must be ob-
served:
l
When replacing the control unit Air Top 2000
(12 Volt) without external temperature sensor with a
new control unit Air Top 2000 Diagnosis (12 Volt)
without external temperature sensor no further in-
structions for replacement as detailed in 8.7.2 are
applicable.
l
When replacing the control unit Air Top 2000
(12 Volt) with external temperature sensor with the
control unit Air Top 2000 Diagnosis (12 Volt) with
external temperature sensor the modifications per
8.8.1 must be performed.
X6
X11
Control Unit Air Top 2000 Diagnosis
If a new temperature sensor is to be used place an
order for no. 883 84A (including new cover).
l
When replacing the control unit Air Top 2000
(24 Volt) not TRS with a control unit Air Top 2000 Di-
agnosis (24 Volt) not TRS the modifications per
8.8.2 must be incorporated.
CAUTION
Not performing the modification may result in a short cir-
cuit.
X9
NOTE
l
When replacing the control unit Air Top 2000 TRS
(24 Volt) with a control unit Air Top 2000 Diagnosis
TRS (24 Volt) perform modifications per 8.8.3.
WARNING
Failure to perform modifications will result in a
potential safety risk.
In all cases there will be no possibility for diagnosis after
replacement as the wiring harness installed in the
vehicle is not provided with a diagnosis connector.
8.8.1 Replacement of Control Unit Air Top 2000
(12 Volt) with External Temperature
Sensor
1.
Remove control unit according to 8.7.2.1.
2.
Remove leaf spring contacts 4 and 6 from connector
X6.
The following step is not applicable when installing a
new temperature sensor.
3.
Position leaf spring contacts order no. 880 39A (must
be ordered) and arrest in connector X9 order no.
881 97A (must also be ordered). Polarity is irrele-
vant.
4.
Install new control unit according to 8.7.2.2.
5.
Connect connectors X6 and X9.
1
3
5
7
2
4
6
8
8.8.2 Replacement of Control Unit Air Top 2000
(24 Volt) not TRS
1.
Remove control unit according to 8.7.2.1.
2.
Remove leaf spring contacts of grey and violet wire
from connector X6, contacts 4 and 6.
3.
Install new control unit according to 8.7.2.2.
4.
Connect connector X6.
1
3
5
X6
2
4
6
8
8
Servicing
NOTE
4
6
2
1
2
1
4
6
7
811
Hide quick links:
Advertisement
Table of Contents
