323000811 - K061 ABS WARNING LIGHT OFF (INTIAL TEST NOT CARRIED OUT)

The ABS warning light does not come on at key on (it should come on for 3 seconds to indicate that the initial control unit test has been carried out, and then go off).
1CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket.Check that the tester is in proper communication with the ABS control unit.Check serial line continuity between the Body computer and ABS control unit.Move on to Step 21. No communication with the control unit.2. Error detected in the control unit.3. ABS control unit faulty4. Serial line broken.1. Restore:- connection between the ABS control unit and the diagnostic connector;- ABS control unit power supply    See E7020 ABS 2. Continue following the instructions on the diagnostic equipment.3. Replace the ABS control unit    Op. 3340A12 ABS HYDRAULIC AND ELECTRONIC CONTROL UNIT - R.R. 4. Restore the serial line continuity.
2INSTRUMENT PANEL CHECKAll OKProblems encounteredOperation
Check that the ABS warning light located on the instrument panel activates correctly during active diagnosis    See E4010 INSTRUMENT PANEL
The warning lights take the form of LEDs built into the electronic circuit and are NOT therefore replaceable
End of diagnosis.Warning light not working.Replace the Instrument Panel    Op. 5560B10 CONTROL PANEL - R+R