Fault 14 / Fault Code 35

14: Return pump Fault code - 35 -

Possible Causes, Elimination, Remarks




1. Switch off the ignition. Pull off the plug at the control unit. Check control circuit (wire with relay) - PIN 20 to PIN 5 - for break or short-circuit to positive side or to earth/ground.

If no fault is found, proceed with 2.




If a break or short to the positive side or to earth/ground is present, pull off the motor relay. Check the wiring between terminal 85 at the relay base and PIN 5 at the control unit plug, and and between terminal 86 and PIN 20.

If the wiring is in working order: renew the motor relay.

2. Pull off the motor relay. The car's electrical system voltage (app. 12 Volt) must be present at terminal 87 of the relay base.

3. Bridge terminals 30 and 87 at the relay base.

If the return pump does not run, continue at 4.

If the return pump runs:
Check the wire from terminal 30 on the relay to PIN 31 at the control unit plug. If the wire is in working order: renew the motor relay.




4. Check Connections at earth/ground wire (1) and positive wire (2) for contact resistance.

Bridge terminals 30 and 87 at the relay base and check that the electric current is reaching connecting point (3).

If the current is present at this point (but the return pump is not running): renew hydraulic unit (defective return pump).