Signal Missing

Signal missing

Checking the component
If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults can occur for a number of different reasons. The fault is evaluated depending on how it occurs.
Check the fuse for the power seat module (PSM)
Check the signal cable between control module terminal #A2 and seat motor 1. Check for an open-circuit. Check for contact resistance.
If a fault is found, replace the signal cable.
Try replacing the motor if no fault is found.
Remedy as necessary.

Other information:
- Electric motor height adjustment Electric Motor Height Adjustment
- Electric motor front-rear adjustment Electric Motor Front-Rear Adjustment
- Checking wiring and terminals Checking Wiring And Terminals
- Signal specification, L.H.D Signal Description, Power Seat Module (PSM)
- For information about the fuses, see the relevant wiring diagram.





Continue - Verification

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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 - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information

FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the component

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