Notes on diagnosis of the electric steering lock

If there is a fault in the electric steering lock, it can occur that terminal 15 is blocked by the CAS control unit (maximum value of the internal ELV frequency counter has been reached).

If terminal 15 is blocked, the diagnosis must be carried out in terminal 30B.

To prevent the vehicle from going to sleep during the diagnosis, it must be kept awake. The vehicle is kept awake when the radio is switched on. During the diagnosis, leave the radio switched on.

In terminal 30B, no automatic vehicle identification can be carried out at the start of the diagnosis. The vehicle has to be selected manually for identification.

After manual selection of the vehicle, run the individual short test for the CAS control unit.

In procedure AT6100_CAS4ELV2 Electric Steering Lock, the fault code entries for the electric steering lock are processed. If there are several fault code entries for the ELV, all the fault code entries must be processed in succession. For the fault cause to be found, all the instructions in the testing procedure must be followed precisely.