Diagnostic Manual, Body and Accessories,
Volume 1.1
Pneumatic Test Program - Test (CL)
Data (mbar)
| Test procedure |
Permissible deviation |
| Allowable system leakage at 600 mbar
pressure or 300 mbar vacuum in 1 minute. |
 30
mbar |
Allowable leakage of actuators with
lines at 600 mbar pressure or 300 mbar vacuum
in 1 minute. |
25
mbar |
Preparation for Test:
1. Provide access to PSE control module (A37) and disconnect yellow pneumatic
line with socket from PSE control module.
2. Connect tester to disconnected pneumatic line using with connector 129
805 03 44.
If an actuator does not operate correctly and no leakage is found, check
the respective lines for kinks or blockages.
Parts Required for Test:
1 Connector 202 805 03 44
2 Connection hose, 50 mm long 007 997 61 82
1 Pneumatic line, 1 m long 000 158 14 35
Note:
The connections on the PSE control module and pneumatic multiple connector
are marked with their German acronyms. In other words:
ZV (German) = CL (English),
SRU (German) = MVA (English),
OSL (German) = OSB (English).
|
 |
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 1.0 |
Complete system pressurized |
Yellow connector
on tester. |
Apply 600 mbar pressure to entire
system. |
Pressure loss
30 mbar in
1 minute.
|
3.0
32 PSE/RTR
1.0 1) |
| 2.0 |
Complete system evacuated |
Black connector
on tester.
|
Apply 300 mbar vacuum to entire system. |
Vacuum loss
30 mbar in
1 minute.
|
4.0 |
Preparation for Test:
1. Disconnect pneumatic line leading to the non-operating pneumatic actuator
at the pneumatic distributor. Letters on the distributor indicate to which
of the CL actuators the pneumatic line leads.
A  Left front door D
Right rear door
B Right front door E
Fuel tank filler flap
C Left rear door F
Trunk lid
1. If an actuator does not operate correctly and no leakage is found, check
the respective lines for kinks or blockages.
2. Disconnected pneumatic lines are to be reconnected to the distributor
with connector 007 997 61 82.
Parts Required for Test:
1 Pneumatic hose, 50 mm long 007 997 61 82
Parts Required for Repair:
1 Pneumatic hose, (as needed) 007 997 61 82
|
|
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 3.0 |
Line and actuator pressurized |
Yellow connector
on tester. |
Apply 600 mbar pressure to line and
actuator. |
Pressure drop
25 mbar in
1 minute.
|
5.0,
7.0 |
| 4.0 |
Line and actuator evacuated |
Black connector
on tester. |
Apply 300 mbar vacuum to line and
actuator. |
Vacuum loss
25 mbar in
1 minute.
|
6.0,
8.0 |
Preparation for Test:
1. Remove nonfunctioning actuator.
2. Connect vacuum/pressure tester to pneumatic connection of actuator.
Parts Required for Test:
1 Pneumatic line 129 800 95 15
1 Pneumatic line, 1 m long 000 158 14 35
1 Pneumatic hose, 50 mm long 007 997 61 62
1 Connector 202 805 03 44
|
|
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 5.0 |
Actuator holds pressure |
Yellow connector
on tester. |
Apply 600 mbar pressure
to actuator. |
Pressure drop
25 mbar in
1 minute.
|
Actuator leaks. Replace actuator. |
| 6.0 |
Actuator holds vacuum |
Black connector
on tester. |
Apply 300 mbar vacuum
to actuator. |
Vacuum loss
25 mbar in
1 minute.
|
Actuator leaks. Replace actuator.
|
Preparation for Test:
1. Connect tester to one end of pneumatic line and plug other end with cap
000 987 29 45.
Parts Required for Test:
1 Cap 000 987 11 45
1 Pneumatic hose, 50 mm long 007 997 61 82
|
|
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 7.0 |
Line holds pressure |
Yellow connector
on tester. |
Apply 600 mbar pressure
to lines. |
Pressure drop
0 mbar in
1 minute.
|
Pneumatic line leaks,
repair/replace line. |
| 8.0 |
Line holds vacuum |
Black connector
on tester. |
Apply 300 mbar vacuum
to lines. |
Vacuum loss
0 mbar in
1 minute.
|
Pneumatic line leaks,
repair/replace line. |
|
Printable
version
