Test results

Carry out a fault diagnosis using the diagnostic equipment for the CAN information and check for the presence of grade C DTC, in particular checking that there are no errors at the NGE

Go to Step 2

1. Presence of errors at CAN control units

2. Errors present for the electric steering

1. Continue following the instructions given by the diagnostic equipment.

2. Continue following the instructions given by the diagnostic equipment.

Detach the connector for the ABS control unit and check, using the Examiner, that the control unit side circuit resistance is 120 Ohms like on the connector side

Check the electric steering supply voltage (power pins A and B)

Go to Step 3

1. CAN faulty

2. Electric steering power supply missing

1. Go to Step 3

2. Restore the correct power supply.

Check the wiring from the electric steering control unit to the ABS control unit using the tester

Go to Step 4

Wiring faulty.

Restore the correct connection between the ABS control unit and the electric steering control unit

Delete the errors using the diagnostic equipment. Road test

 See Test 3350EA ESP SYSTEM INTERVENTION CHECK

to ensure that the control unit checks whether there are any errors still present.

Return to the workshop and check that the fault is no longer present using the diagnostic equipment.

End of diagnosis

The fault persists.

Go to Step 1.