Test Steps - Section 32

Preliminary work:
Diagnosis - Diagnostic Trouble Code (DTC) Memory PSE
PSE Control Module Test PSE

Data (mbar)

Test procedure
Allowable system leakage at 600 mbar pressure or
300 mbar vacuum in 1 minute. Permissible deviation <=30 mbar
Allowable leakage of actuators with lines at 600 mbar pressure or
300 mbar vacuum in 1 minute. Permissible deviation <=25 mbar

Special Tools:

Special Tools

A. Entire system

Preparation For Test:

Vehicles up to 07/94:
1. Disconnect pneumatic multiple connector from PSE control module.
2. Connect tester to bottom side of pneumatic multiple connector at ZV (CL) using connector 129 805 04 44

Vehicles as of 08/94:
1. Disconnect yellow pneumatic line with socket from PSE control module.
2. Connect tester to disconnected pneumatic line using connector 129 805 04 44.

Parts Required for Test:
1 Connector 129 805 04 44
2 Connection hose, 50 mm long 007 997 61 82
1 Pneumatic line, 1 mm 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),
RH (German) = BA (English),
FKS (German) = RHR (English),
SFG (German) = RTG (English),
PU/P+ (OSL) (German) = PU/P+ (OSB) (English),
PU/P- (SRU) (German) = PU/P- (MVA) (English).








Test Steps 1.0 & 2.0


B. Individual lines with actuators

Preparation For Test:

Vehicles up to 07/94:
1. Pry off yellow central locking (CL) pneumatic line at pneumatic multiple connector (using a 7 mm open end wrench).
2. Connect tester in sequence to each of the yellow CL pneumatic lines using connector 007 997 61 82.

Vehicles as of 08/94:
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
B -> Right front door
C -> Left rear door
D -> Right rear door
E -> Fuel tank filler flap
F -> Trunk lid


NOTE:
1. If an actuator does not operate correctly and no leakage is found, check the respective lines for kinks or blockages.
2. On vehicles as of approx. 06/94, the disconnected pneumatic lines are to be reconnected to the distributor with connector 007 997 61 82.


Parts Required for Test:
1 Connector, 50 mm long 007 997 61 82







Test Steps 3.0 & 4.0


C. Actuators

Preparation For Test:
1. Remove actuator.
2. Connect vacuum/pressure tester to pneumatic connection of actuator.

Parts Required for Test:
1 Pneumatic line 129 800 09 15
1 Connector, 50 mm long 007 997 61 82







Test Steps 5.0 & 6.0


D. Lines

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 29 45
1 Connector, 50 mm long 007 997 61 82
1 Connector 129 805 04 44







Test Steps 7.0 & 8.0