Faulty Signal

Faulty signal. Permanent fault

Checking Hall sensor signal

Hint: The motor should be activated when the check is carried out.








- Reconnect components, connectors etc.
- Ignition on.
Read off value.
Check whether the power seat module (PSM) receives the signal from the Hall sensor. Operate the relevant seat motor and check whether the value counts upwards and downwards as the seat is moved in each direction.
The value should count up or down depending on seat operation.





Is the function OK?

Yes - FAULT FOUND

No - Checking wiring and components

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Checking wiring and components
Check the cable between the power seat module (PSM) #3D and the Hall sensor, and the cable between the power seat module (PSM) #4D and the Hall sensor for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault , a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault and a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Check hall sensor and replace if necessary.

Hint: The sensor should generate a pulsed signal.

Remedy as necessary.

Other information
- To connect the breakout box, see Connecting the breakout box, power seat module (PSM) Connecting The Breakout Box, Power Seat Module (PSM).
- For information on signals, refer to Signal specification, Power seat module Signal Specification, Power Seat Module (PSM).














Continue - Verification

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Verification

Hint: The motor should be activated when the check is carried out.




- Ignition on.
Read off value.
The Hall sensor must generate a pulsed signal and the power seat module (PSM) should count up or down depending on the movement of the seat.





Is the function OK?

Yes - FAULT FOUND

No - Fault-tracing information

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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

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Attempt New Test - Checking Hall sensor signal

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