General Information, Version Coding

PSE Control Module (PSE)

NOTES: The PSE provides pressure or vacuum for the following systems:

- Central locking (CL), (pressure or vacuum) - activation, via remote central locking (RCL), interior switch (CL) (86/1s2) and via mechanical key (Only (USA) (J)).
- Remote trunk release (RTR), (pressure) - activation via remote trunk release switch (S15/1) or via remote central locking (RCL) (RTR for model 208/210 sedan only).
- Retractable rear head restraint (RHR), (vacuum) - activation via RHR unlocking switch (S6/1s3) (RHR for model 208/210 sedan only).
- Multicontour seat (OSB), (pressure) - control of the working pressure via pressure switch in the PSE, as soon as the ignition ON signal is received via the CAN-interface.
- Manifold Vacuum Assist (MVA), (vacuum) - control of the working vacuum via pressure switch in the PSE, 55 soon as the ignition ON signal is received via the CAN-interface (MVA for model 210 only).

Diagnostic Trouble Code (DTC) Memory
- Pneumatic as well as electrical faults of the systems (CL, OSB, MVA, RTR and RHR) are recognized by the PSE and stored in the DTC memory. DTC memory can only be readout and erased using the Hand-Held-Tester (HHT).

CAUTION: Erasing the DTC memory, will also erase the DTC memory for the Convenience Feature (CF) and Minor. steering column adjustment, heated mirrors (MSC).

Additional components of the PSE:
- Heated rear window relay
- Crash sensor for emergency unlocking
- ATA control module

Replacement of the combination control module:
- Combination control modules being replaced must be programmed and version coded prior to connecting to the vehicle electrical system.
Please review Version Coding program, for details.

PSE control module version coding:
- The PSE control module (A37) must be version coded. In the HHT display, the menu point 5 appears as a result.
- Version coding is menu driven.
- Version codes with a (1) noted in the following table are based on the version of the PSE and thus do not need to coded.

Coding Possibilities Part 1:

Coding Possibilities Part 2: