Scania BCI DTC 540 BIC program

BCI BCI control unit · Scania · 14 variants

Code 540 (decimal). Some diagnostic tools show it in hexadecimal as 021C.

In short

Unexpected or prohibited event in the BIC program.

Variant 1

Applies to: BCI1 (BWE)BCI2 (BWE)

What does Scania BCI fault code 540 mean?

Unexpected or prohibited event in the BIC program.

What causes Scania DTC 540?

Fault in the BIC program.

How does the system react?

The BIC program is deactivated. A yellow BWE warning indication is displayed.

How to fix Scania BCI fault code 540?

  1. Use BICT to rectify any faults in the BIC program:
  2. Run the Edit BIC programs wizard.
  3. Check for validation faults in BICT via the validation tab.
  4. Update the BIC program in the control unit should validation errors occur, otherwise carry out spare parts programming of the BCI control unit.
  5. Check that the fault code has been reset.

Variant 2

Applies to: BCI2 (BWE)

Detection

Unexpected or prohibited event in the BIC program.

Possible cause

Fault in the BIC program.

System reaction

The BIC program is deactivated. A yellow BWE warning indication is displayed.

How to fix

  1. Use BICT to rectify any faults in the BIC program:
  2. Run the Edit BIC programs wizard.
  3. Check for validation faults in BICT via the validation tab.
  4. Update the BIC program in the control unit should validation errors occur, otherwise carry out spare parts programming of the BCI control unit.
  5. Check that the fault code has been reset.

Variant 3

Applies to: BCI3 (BWE)

Detection

Unexpected or prohibited event in the BIC program.

Possible cause

Fault in the BIC program.

System reaction

The BIC program is deactivated. A yellow BWE warning indication is displayed.

How to fix

  1. Use BICT to rectify any faults in the BIC program:
  2. Run the Edit BIC programs wizard.
  3. Check for validation faults in BICT via the validation tab.
  4. Update the BIC program in the control unit should validation errors occur, otherwise carry out spare parts programming of the BCI control unit.
  5. Check that the fault code has been reset.

Variant 4: Short circuit, ExpBuss-B13

Applies to: BCI B1 (BWEXBUS)

Detection

Short circuit to ground or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to ground. - Incorrect electrical load.

System reaction

A yellow warning message is shown in the instrument cluster. Functions dependent on the output not functioning correctly.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

Variant 5: Short circuit, ExpI-B13

Applies to: BCI C1 (BWEXI)

Detection

Short circuit to earth or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to earth. - Incorrect electrical load.

System reaction

A yellow warning message is shown in the instrument cluster. Bodywork functions that rely on logic diagrams using this output do not function correctly as long as the fault code is active.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

Variant 6: Short circuit, ExpA-30

Applies to: BCI E1 (BWEXA)

Detection

Short circuit to ground or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to ground. - Incorrect electrical load.

System reaction

A yellow warning indication is displayed. Bodywork functions that rely on logic diagrams using this output do not function correctly as long as the fault code is active.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

Variant 7: Short circuit, ExpB-30

Applies to: BCI E1 (BWEXB)

Detection

Short circuit to ground or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to ground. - Incorrect electrical load.

System reaction

A yellow warning indication is displayed. Bodywork functions that rely on logic diagrams using this output do not function correctly as long as the fault code is active.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

Variant 8: Short circuit, ExpC-30

Applies to: BCI E1 (BWEXC)

Detection

Short circuit to ground or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to ground. - Incorrect electrical load.

System reaction

A yellow warning indication is displayed. Bodywork functions that rely on logic diagrams using this output do not function correctly as long as the fault code is active.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

Variant 9: Short circuit, ExpD-30

Applies to: BCI E1 (BWEXD)

Detection

Short circuit to ground or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to ground. - Incorrect electrical load.

System reaction

A yellow warning indication is displayed. Bodywork functions that rely on logic diagrams using this output do not function correctly as long as the fault code is active.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

Variant 10: Short circuit, ExpE-30

Applies to: BCI E1 (BWEXE)

Detection

Short circuit to ground or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to ground. - Incorrect electrical load.

System reaction

A yellow warning indication is displayed. Bodywork functions that rely on logic diagrams using this output do not function correctly as long as the fault code is active.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

Variant 11: Short circuit, ExpF-30

Applies to: BCI E1 (BWEXF)

Detection

Short circuit to ground or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to ground. - Incorrect electrical load.

System reaction

A yellow warning indication is displayed. Bodywork functions that rely on logic diagrams using this output do not function correctly as long as the fault code is active.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

Variant 12: Short circuit, ExpG-30

Applies to: BCI E1 (BWEXG)

Detection

Short circuit to ground or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to ground. - Incorrect electrical load.

System reaction

A yellow warning indication is displayed. Bodywork functions that rely on logic diagrams using this output do not function correctly as long as the fault code is active.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

Variant 13: Short circuit, ExpH-30

Applies to: BCI E1 (BWEXH)

Detection

Short circuit to ground or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to ground. - Incorrect electrical load.

System reaction

A yellow warning indication is displayed. Bodywork functions that rely on logic diagrams using this output do not function correctly as long as the fault code is active.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

Variant 14: Short circuit, ExpI-30

Applies to: BCI E1 (BWEXI)

Detection

Short circuit to ground or overload.

Possible cause

The cause can be one of the following: - Fault in connections or cable harness. - Short circuit to ground. - Incorrect electrical load.

System reaction

A yellow warning indication is displayed. Bodywork functions that rely on logic diagrams using this output do not function correctly as long as the fault code is active.

How to fix

  1. Use BICT to find out which bodywork functions are connected to the output.
  2. Check the connections, cable harnesses and components connected to the input.

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

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