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B1540

Read the instructions below then start the fault diagnostic procedure.

Symptom: ABS warning lamp on, no ABS function.

B1540

Boost pressure control valve, no voltage


Fault symptom

ABS warning lamp on, no ABS function.

Condition




If three or more valves lack voltage supply.

If the internal voltage relay is out of order.

The electronic control module lacks a +30 voltage supply (connector pins 17 and 18).