Code 24791

Cause Of Fault
The pump is defective, does not operate despite control signal

Symptom
The ANTI LOCK light is lit

Action
1. Connect a breakout box to the ECU connector.
2. Check fuse FC 30A.
3. Check whether 12 V is present on pin 30 of the pump relay and whether 0 V is present on pin 87 (ground through motor).
4. Activate the pump by connecting pins 1, 34 and 15 on the breakout box for a maximum of 2 minutes.
5. Check that the Antilock Brake System (ABS) pump relay clicks.
6. Check pins 49 and 31 on the breakout box.
- Motor running = approx. 0.7 V AC
- Motor stationary = 0 V.
- Check pin 2 with relay operated.
If 12 V is present - check grounding.
If OK - fit a new pump.