C1540

Read the instructions below then start the fault diagnostic procedure.

Symptom: ABS warning lamp on. ABS not functioning.

C1540

Fault symptoms

ABS warning lamp on. ABS not functioning.

Conditions

•	If no current is supplied to three or more of the valves.

•	If the control module's internal voltage relay is defective.

•	No current (+30 circuit) supplied to the control module (pins 17 and 18).

Diagnostic help

The solenoid valves can be activated using the diagnostic tool.

-	Select "Activate".

-	Select "Valves"

Select the valve from the submenu. The selected valve will be activated at a frequency of 1 Hz for about 30 s.