Fault 12 / Fault Code 33
12: Rear axle ABS valve Fault code - 33 -
Comply with note under 10: Front left ABS valve, and with fault code - 31-. Fault 10 / Fault Code 31
For troubleshooting, proceed as for fault code - 31 - but use PIN 2 instead of PIN 19 on the control unit plug.
To check the internal resistance of the ABS valve (after pulling off the 12-pin plug at the hydraulic unit), measure between PIN 5 and PIN 4 (instead of PIN 1 and PIN 4).