Memory Position Fault

R A. Diagnostic trouble code (DTC) information

Condition
The control module can store one seat position set-up in memory position 2. If the control module detects that the contents of memory position 2 does not match a check-sum then diagnostic trouble code (DTC) PSL/PSR-322 is set.

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

Fault symptom(s)
- Memory function 2 not working.
- This diagnostic trouble code (DTC) may occur without any fault symptom being apparent.
- Fault-tracing begins at RB. Memory position fault.





RB. Memory position fault

RB1: Checking function of the memory button
- Ignition OFF.
Select scrolling values and read off the value for memory button 2 and MEM.

Press in the programming button MEM and keep it pressed while pressing memory storage button 2.

MEM and memory button 2 status should change from NOT ACTIVE to ACTIVE when the respective button is pressed in.

If reading is OK:
- RB2

If reading is incorrect:
- RB5

RB2: Checking memory function 2
Operate the seat so it moves to a new position using the control buttons.

Activate stored memory position 2 to see if the seat moves to that position.

Does the seat move to memory position 2?

Yes:
- RB3

No:
- RB4

RB3: Fault-tracing information
The diagnostic trouble code (DTC) was probably set because no position has been programmed into memory position 2.

Then continue with:
- Fault corrected





RB4: 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:
- RB9





RB5: Connecting the break-out box
- Ignition OFF.
- Remove seat from car.
- Connect break-out box to 16-pin connector D. Connecting The Break-out Box

Then continue with:
- RB6





RB6: Checking memory buttons
- Ignition OFF.
- Break-out box connected.

Connect an ohmmeter between break-out box position 31 (memory button 2) and 36 (ground). Press memory button 2 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:
- RB8

If reading is incorrect:
- RB7





RB7: Replace component
Repair wiring or replace control panel with a new one. Control panel replacement, Service and Repair

Then continue with:
- RB9





RB8: Checking, contact resistance and oxidation
Check and correct the 16-pin connector positions D:1 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:
- RB9





RB9: 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 2.

Test seat by moving to a new position using the control buttons.

Does the seat move to memory position 2?

Yes:
- Fault corrected

No:
- RB10

RB10: Fault-tracing information
The verification result shows that the fault persists.
Do you want to exit fault-tracing?

Yes:
- Fault not corrected

No:
- RB1