Preparation For Test - Section 32
Preparation for Test:
1. Connect vacuum/pressure tester with reservoir to PSE control module (see Figures 1, 2 and 3).
2. Unlock vehicle using IR transmitter,
3. Battery voltage 11 - 14 V,
4. Fuses ok,
5. Review Connection and Use of Test Equipment, Function Test, DTC Memory, Component Locations, Connection of Components, Preparation for Test and Pneumatic Test Program,
6. Provide access to PSE control module (A37) and disconnect PSE pneumatic multiple connector (do not disconnect wiring harness).
Parts Required for Test:
1 Reservoir 107 800 08 19
1 Y-distributor 117 078 01 45
3 Connector 202 800 03 53
1 Connector 202 800 05 53
1 Connection hose, 50 mm long 007 997 61 82
2 Pneumatic line, 1 m long 000 158 14 35
8 Rubber plug 000 987 11 45
NOTES:
1. Before testing the safety switch time of the consumers, interrupt the PSE control module power supply for at least 3 seconds.
2. After completing the PSE control module test, interrupt the PSE control module power supply for at least 3 seconds (erase safety switch time memory).
3. After completing the PSE control module test, do not operate any system which would require vacuum or pressure for approx. 10 minutes.
4. The connections on the PSE control module are marked with their German acronyms. Reference to these connections in this test are made to their U. S. equivalents. In other words:
ZV (German) = CL (U.S.),
SRU (German) = MVA (U.S.),
OSL (German) = 0SB (U.S.).
Special Tools:
Connection Diagram - Vacuum/Pressure Tester with Reservoir
Model 129:
Model 170:
a Right door pneumatic connection
b Left door pneumatic connection
c Fuel filler flap pneumatic connection
d RTR pneumatic connection
e OSB pneumatic connection
f Trunk lid pneumatic connection
g CL pneumatic connection
A37 PSE control module, combined functions
Model 140:
a Pneumatic connection, passenger/rear doors
b Pneumatic connection, driver-side door
c Pneumatic connection, fuel tank filler flap
d Pneumatic connection, RTR/RHR
e OSB pneumatic connection
f MVA pneumatic connection
g RTG pneumatic connection
h Trunk lid pneumatic connection
A37 PSE control module, combined functions