Fault-Tracing Information

Fault-tracing

Fault-tracing information

Note! This trouble code is only relevant for troubleshooting and action in the following cases:

- The trouble code is active in the present driving cycle and has been active for a longer period of time.
- The customer experiences malfunction that can be attributed to the trouble code.
In other cases, the DTC does not indicate a fault and must therefore be ignored and only erased.

Do you want to continue fault-tracing?

Yes - Checking the power supply

No - DONE

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Checking the power supply

Note! The Steering wheel angle sensor module (SAS) is located in the lever module together with the steering wheel module (SWM) and is supplied with power by it.




- Ignition on.
- Read the voltage feed for the Steering Angle Sensor (SAS) and the Central Electronic Module (CEM).
The supply voltage values for the Steering Angle Sensor (SAS) and the Central Electronic Module should be approximately the same.
If the two voltages differ by more than 2.0 V then this would suggest that the fault is permanent.
If the voltage is approximately the same, this indicates an intermittent fault, i.e. the fault was present previously but is not active at the moment.

Other information
- Connecting the breakout box Connecting the Breakout Box, Steering Wheel Angle Sensor Module (SAS)
- Signal specification Signal Specification, Steering Wheel Angle Sensor Module (SAS)
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults









Continue - Checking the wiring and terminals

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Verification

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








- Ignition on.
- Reconnect the connectors, reinstall components etc.
- Ignition on.
- Read the voltage feed for the Steering Angle Sensor (SAS) and the Central Electronic Module (CEM).
Check that the voltage is approximately battery voltage.





Is the voltage 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 the power supply

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Checking the wiring and terminals
Check the connector. Check for contact resistance. Check for oxidation. Check for loose connections.
Check the cable for voltage feed (15i-feed) between fuse in relay/fuse box in luggage compartment and Steering wheel module (SWM) #A8 (#8) for contact resistance and oxidation.

Hint: With ignition the voltmeter should display the battery voltage.

Check the ground cable between ground connection and Steering wheel module (SWM) #A2 (#2) for contact resistance and oxidation.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting the Breakout Box, Steering Wheel Angle Sensor Module (SAS)
- Signal specification Signal Specification, Steering Wheel Angle Sensor Module (SAS)
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults









Continue - Verification

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