Moves In Wrong Direction

Q A. Diagnostic trouble code (DTC) information

Condition
The control module can store one seat position set-up in memory position 1. If the control module detects that the contents of memory position 1 does not match a check-sum then diagnostic trouble code (DTC) PSL/PSR-323 is set.

Possible source
- Incorrect procedure for memory storage.
- Defective wiring.
- Defective control.
- Defective control module.

Fault symptom(s)
- Memory function 1 not working.
- This diagnostic trouble code (DTC) may occur without any fault symptom being apparent.
- Fault-tracing begins at 08. Memory position fault.





Q B. Memory position fault

QB1: Checking function of the memory button
- Ignition OFF.
Select scrolling values and read off the value for memory button 1 and MEM.

Press in the programming button MEM and keep it pressed while pressing memory storage button 1

MEM and memory button 1 status should change from NOT ACTIVE to ACTIVE when the respective button is pressed in.

If reading is OK:
- QB2

If reading is incorrect:
- QB5

QB2: Checking memory function 1
Operate the seat so it moves to a new position using the control buttons.

Activate stored memory position 1 to see if the seat moves to that position.

Does the seat move to memory position 1?

Yes:
- QB3

No:
- QB4

QB3: Fault-tracing information
The diagnostic trouble code (DTC) was probably set because no position has been programmed into memory position 1.

Then continue with:
- Fault corrected





QB4: Replace component
The diagnostic trouble code (DTC) was probably set due to an internal fault in the control module.

Try a new control module. Control Module, Service and Repair

Then continue with:
- QB9





QB5: Connecting the break-out box
- Ignition OFF.
- Remove seat from car.
- Connect break-out box to 16-pin connector. Connecting The Break-out Box

Then continue with:
- QB6





QB6: Checking memory buttons
- Ignition OFF.
- Break-out box connected.
Connect an ohmmeter between break-out box position 32 (memory button 1) and 36 (ground). Press memory button 1 and read off resistance.
Connect ohmmeter between break-out box position 33 (MEM) and 36 (ground). Press MEM and read off resistance.

The resistance should be 0 ohm when the respective buttons are pressed.

If reading is OK:
- QB8

If reading is incorrect:
- QB7





QB7: Replace component
Repair wiring or replace control panel with a new one. Control panel replacement, Service and Repair

Then continue with:
- QB9





QB8: Checking, contact resistance and oxidation
Check and correct the 16-pin connector positions D:2 and D:3 for contact resistance and oxidation.

If the fault persists after verification, try a new control module. Control module, Service and Repair

Then continue with:
- QB9





QB9: Verification
Hint: After carrying out the repair, check that the fault has been remedied as follows.
- Ignition OFF.
- Connect up seat in car.

Program a seat position into memory 1.

Change seat position using the control buttons.

Activate stored memory position 1 to see if the seat moves to that position.

Does the seat move to memory position 1?

Yes:
- Fault corrected

No:
- QB10


QB10: Fault-tracing information
The verification result shows that the fault persists.
Do you want to exit fault-tracing?

Yes:
- Fault not corrected

No:
- QB1