Communication With the Steering Angle Sensor. Signal Missing

Communication with the steering angle sensor. Signal missing

Checking diagnostic trouble codes (DTCs) in the central electronic module




Checking diagnostic trouble codes (DTCs) in the central electronic module

Checking other diagnostic trouble codes (DTCs)
In the event of communication problems, the fault may exist in other parts of the communications network.
The role of the central electronic module is to generally control the communications network and to store diagnostic trouble codes (DTCs) in the event of communication problems between control modules.
If there are diagnostic trouble codes (DTCs) stored for communication problems in the central electronic module, stop the fault tracing and fault trace the central electronic module.

Were diagnostic trouble codes (DTCs) for communication problems stored in the central electronic module?

Yes - DONE

No - No Fault Found

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DONE - DONE

No Fault Found - Checking diagnostic trouble codes (DTCs) in the control module for the steering angle sensor

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Checking diagnostic trouble codes (DTCs) in the control module for the steering angle sensor
If there are diagnostic trouble codes (DTCs) stored in the control module for the steering angle sensor, these must be fault-traced first.

Were diagnostic trouble codes (DTCs) stored in the control module for the steering angle sensor?

Yes - DONE

No - Checking wiring and terminals

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Checking wiring and terminals




- Ignition off.
Check the brake control module connector. Check for damaged or bent terminal pins. Check for contact resistance and oxidation.
Check the wiring for CAN communication between brake control module terminal #11 (#A11) and terminal #6 (#A36) on the control module for the steering angle sensor and between brake control module terminal #15 (#A15) and terminal #15 (#A45) on the control module for the steering angle sensor. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Check that the wiring is not too close to a source of interference such as a carphone etc.
Remedy as necessary.

Other information
- To connect the breakout box to the brake control module, see Connecting the breakout box, brake control module (BCM) Connecting the Breakout Box, Brake Control Module (BCM)
- Connecting the breakout box Connecting the Breakout Box, Steering Wheel Module (SWM)
- Checking wiring and terminals Checking Wiring And Terminals


Continue - Fault Found

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