Scania BCI DTC 693 BIC program

BCI BCI control unit · Scania · 2 variants

Code 693 (decimal). Some diagnostic tools show it in hexadecimal as 02B5.

In short

The BIC program has reduced functionality due to a calculation fault.

Variant 1

Applies to: BCI2 (BWE)

What does Scania BCI fault code 693 mean?

The BIC program has reduced functionality due to a calculation fault.

What causes Scania DTC 693?

The cause can be one of the following calculation faults: - Division with zero. - Too high values for a signal after a calculation. - Too low values for a signal after a calculation.

How does the system react?

BIC program functionality is affected and does not work correctly. A yellow warning message regarding BWE is shown in the instrument cluster.

How to fix Scania BCI fault code 693?

  1. Run the Checking the BIC program wizard and search for the degraded/switched off logic diagram.
  2. If the fault code is active, the fault code symbol is also displayed in BICT in front of the faulty logic diagram.
  3. If the fault code is inactive, the fault that caused the fault code in the logic diagram is marked with a symbol which indicates that there is saved data from the date when the fault occurred.
  4. Via more information in BICT, you can then see the signal status of all signals in the logic diagram when the fault occurred.
  5. Find out which pin or which signal is faulty.
  6. Look for fault codes in all systems which agree with the faulty signal or input and carry out any necessary actions.
  7. Once the current fault code has been rectified, a reset with the starter lock must be carried out to deactivate the fault code.

Variant 2

Applies to: BCI3 (BWE)

Detection

The BIC program has reduced functionality due to a calculation fault.

Possible cause

The cause can be one of the following calculation faults: - Division with zero. - Too high values for a signal after a calculation. - Too low values for a signal after a calculation.

System reaction

BIC program functionality is affected and does not work properly. A yellow warning indication of a fault in the BWE control system is displayed.

How to fix

  1. Run the Checking the BIC program wizard and search for the degraded/switched off logic diagram.
  2. If the fault code is active, the fault code symbol is also displayed in BICT in front of the faulty logic diagram.
  3. If the fault code is inactive, the fault that caused the fault code in the logic diagram is marked with a symbol which indicates that there is saved data from the date when the fault occurred.
  4. Via more information in BICT, you can then see the signal status of all signals in the logic diagram when the fault occurred.
  5. Find out which pin or which signal is faulty.
  6. Look for fault codes in all systems which agree with the faulty signal or input and carry out any necessary actions.
  7. Once the current fault code has been rectified, a reset with the starter lock must be carried out to deactivate the fault code.

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

Code 693 in other Scania systems

Compare code 693 in every system →