HAKO 7580.02, Service Booklet

Page: 82 / 116

Foil 82
9.2.3 ZAPI Controller
B1
The forward direction contactor is correctly activated but does not close.
- contactor coil defective, measure resistance by ohmmeter
- contact is mechanically blocked
- nominal voltage of contactor coil is higher than the battery voltage
B2
The reverse direction contactor is correctly activated but does not close.
- contactor coil defective, measure resistance by ohmmeter
- contact is mechanically blocked
- nominal voltage of contactor coil is higher than the battery voltage
B3
The forward or reverse direction contactor is correctly activated but does not close.
- coils of contactors are defective, measure resistance by ohmmeter
- contacts are mechanically blocked
- nominal voltage of contactor coils is higher than the battery voltage
C1
No voltage at the coil of the forward direction contactor. Check connector and cable of the
contactor coil to plus supply and to Pin A4 (NT2).
C2
No voltage at the coil of the reverse direction contactor. Check connector and cable of the
contactor coil to plus supply and to Pin A11 (NT1).
C3
No voltage at the coils of the forward and reverse direction contactors. Check connectors
and cables of the contactor coils to plus supply and to Pin A4 (NT2) and A11 (NT1).
Are the items C1, C2, C3 without fault, replace logic.