Scania BCI DTC 688 Programmable switch

BCI BCI control unit · Scania · 3 variants

Code 688 (decimal). Some diagnostic tools show it in hexadecimal as 02B0.

In short

One or more programmable switches are sending an incorrect signal in relation to the expected signal to the coordinator.

Variant 1

Applies to: BCI2 (BWE)

What does Scania BCI fault code 688 mean?

One or more programmable switches are sending an incorrect signal in relation to the expected signal to the coordinator.

What causes Scania DTC 688?

The BIC program contains switches which are not present on the vehicle.

How to fix Scania BCI fault code 688?

  1. Carry out one of the following actions:
  2. Remove the switches which are used in the BIC program but which are not present in the vehicle.
  3. Run the wizard Edit BIC programs.
  4. Fit the switches which are missing from the vehicle but which are used in the BIC program.
  5. Run the Configuration of switch modules wizard.

Variant 2

Applies to: BCI3 (BWE)

Detection

One or more programmable switches are sending an incorrect signal in relation to the expected signal to the coordinator.

Possible cause

The BIC program contains switches which are not present in the vehicle.

How to fix

  1. Carry out one of the following actions:
  2. Remove the switches which are used in the BIC program but which are not present in the vehicle.
  3. Run the Edit BIC programs wizard.
  4. Fit the switches which are missing from the vehicle but which are used in the BIC program.
  5. Run the Switch module configuration wizard.

Variant 3

Applies to: BCI2 (BWE)

Detection

One or more programmable switches are sending an incorrect signal in relation to the expected signal to the coordinator.

Possible cause

The BIC program contains switches which are not present on the vehicle.

How to fix

  1. Carry out one of the following actions:
  2. Remove the switches which are used in the BIC program but which are not present in the vehicle.
  3. Run the Edit BIC programs wizard.
  4. Fit the switches which are missing from the vehicle but which are used in the BIC program.
  5. Run the Switch module configuration wizard.

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

Code 688 in other Scania systems

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