Signal Missing

Signal missing

Checking the power supply and ground for the steering wheel angle sensor module (SAS)
Check the fuse for the steering wheel angle sensor module (SAS) in the fusebox in the passenger compartment.

Note! If the fuse is blown, check the circuit after the fuse before replacing the fuse. Check for a short-circuit to ground. Then replace the fuse.

For further information about the circuit after the fuse, refer to the appropriate wiring diagram.
Check the cable between the fuse and the steering wheel angle sensor module (SAS). Check for an open-circuit.
Check the ground cable between the steering wheel angle sensor module (SAS) and the ground terminal. Check for contact resistance and oxidation. Check for an open-circuit.
Remedy as necessary.

Other information
- To access and replace the control module see Service and Repair
- To connect the breakout box to the steering wheel angle sensor module (SAS), see Connecting the breakout box to the steering angle sensor Connecting the Breakout Box, Steering Wheel Angle Sensor Module (SAS)
- For further information about the fuses and relays, see the Wiring Diagram
- To disconnect the battery voltage, see Battery, disconnecting Battery Disconnecting
- Checking wiring and terminals Checking Wiring and Terminals.








Was a fault detected?

Yes - Checking the steering wheel angle sensor module (SAS)

No - Checking communication with the steering wheel angle sensor module (SAS)

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Checking communication with the steering wheel angle sensor module (SAS)

Hint: The CAN communication with the control module is probably OK if the control module ID can be read off. In that case the fault is probably intermittent and will then be more difficult to trace.




- Try to communicate with the steering wheel angle sensor module (SAS) by reading off the control module ID
- Click on the symbol for VCT2000 to begin reading off

Continue - Signal Missing - General Information

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Checking the steering wheel angle sensor module (SAS)

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








- Ignition off
- Reconnect the connectors. Reinstall the components
- Ignition on.
Check that the DSTC indicator lamp in the row of buttons on the climate control system lights.

Does the lamp light?

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 the power supply and ground for the steering wheel angle sensor module (SAS)

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