Signal Too Low

Signal too low

Checking the power supply
- Ignition off.
- Unplug connector A for the power seat module left (PSL).
- Ignition on.
Check the voltage feed to Power seat module left (PSL) by:
- Measure voltage between #A1 and #A7 on connector A for the power seat module left (PSL).
- Measuring the battery voltage.
If the difference is greater than 2.5 V between the voltage feed for power seat module left (PSL) and battery voltage, the malfunction is in the feed cable or is caused by contact resistance. Also check the fuse for power seat module left (PSL). A half burned fuse can cause intermittent faults.
If the difference is less than 2.5 V, there may be an internal problem in the power seat module left (PSL).
Remedy as necessary.

Other information:
- Control module front seat Service and Repair
- Signal specification Signal Description, Power Seat Module Left (PSL)
- Connecting the breakout box Connecting the Breakout Box, Power Seat Module Left (PSL)
- Checking wiring and terminals Checking Wiring and Terminals





Continue - Verification

-------------------------------------------------

Verification




Verification seat operation

Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Check that seat operation functions. Move the seat manually in all directions.

Does the seat operation function?

Yes - Troubleshooting procedure complete

No - Fault-tracing information

-------------------------------------------------

Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit Fault-Tracing

No - Attempt New Test

------------------------

Attempt New Test - Checking the power supply

-------------------------------------------------