3360383 - Z83 SUPPLY VOLTAGE ERROR

The diagnostic equipment signals the following error: C1802 Supply voltage
This error is signalled if the control unit detects battery voltage that is either too high or too low.
Results of the tests
1SUPPLY CIRCUIT CHECKAll OKProblems metOperation
Check that the supply voltage at the battery terminals is correct.Check the supply wiring from the battery to the ABS control unit See   E7020  ABS : there should not be a drop in voltage between the battery and the control unitEnd of diagnosisBattery voltage incorrect Recharge the battery, if necessary, replace it. Op. 5530B10
Fall in wiring voltage Renew the wiring, if necessary, replace the faulty components
2CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Delete the errors using the diagnostic equipment.Carry out road See Test   3340A  ABS intervention check to make the control unit check whether there are still errors present. Return to the workshop and check that the fault is no longer present using the diagnostic equipment.End of diagnosis.