Signal Too High

Signal too high. Permanent fault

Checking the connectors




- Ignition off
- Check the ABS control module and steering wheel angle sensor connector. Check for contact resistance and oxidation. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
- Reinstall the components, reconnect the connectors etc.
- Ignition on
- Read off the status of steering wheel angle signal R4.
Turn the steering wheel in both directions and check that the value changes between ON and OFF.

Other information:
- To connect the breakout box, see Connecting the breakout box to the steering angle sensor Connecting the Breakout Box, Steering Wheel Angle Sensor Module (SAS)
- To disconnect the steering wheel angle sensor, see Contact reel / steering wheel angle sensor, replacing Contact Reel / Steering Wheel Angle Sensor, Replacing
- For information about signals, see Signal description, Control unit for the steering wheel angle sensor (SAS) Signal Specification.













Does the value change between OFF and ON?

Yes - Fault Found

No - Checking wiring and sensors

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Checking wiring and sensors
- Disconnect the cable harness between the steering wheel angle sensor module (SAS) and the steering wheel module (SWM)
- Connect the breakout box.
Check the wiring between the steering wheel angle sensor module (SAS) terminal #14 (#A38) and steering wheel module (SWM) terminal #18 (#A18). Check for an open-circuit. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to supply voltage. See Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Hint: With the ignition on and the breakout box connected to the steering wheel module (SWM), check the supply voltage to the steering wheel angle sensor control module: Measure the voltage between terminals #?? and #??. The voltage should be 12 V.

Try replacing the steering wheel angle sensor if no faults are found in the wiring between the control module for the steering wheel angle sensor and the steering wheel angle sensor.

Other information:
- To connect the breakout box, see Connecting the breakout box to the steering angle sensor Connecting the Breakout Box, Steering Wheel Angle Sensor Module (SAS)
- To replace the steering wheel angle sensor, see Contact reel / steering wheel angle sensor, replacing Contact Reel / Steering Wheel Angle Sensor, Replacing
- for information about signals, see Signal description, Control unit for the steering wheel angle sensor (SAS) Signal Specification.













Was a fault found in the wiring?

Yes - Verification

No - No Fault Found

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Verification




Verification

Hint: After the repair it is necessary to check that the fault has been rectified.




- Ignition off.
- Connect the connectors, install the components, etc.
- Ignition on.
- Read off steering wheel angle signal R4.
- Turn the steering wheel to full lock in both directions.
The value should change between OFF and ON.





Does the value change?

Yes - VERIFIED

No - VERIFICATION FAILEDPAPER

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VERIFIED - Fault Found

VERIFICATION FAILED - 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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the connectors

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