STATUS
CODE
DISPLAY MESSAGE RECOVERY METHOD CIRCUIT
12544
(cont)
12544 Re-key RH Traction
Node 5
DESCRIPTION BEHAVIOR
Wrong Battery voltage connected to truck, or out
of range - (RH Node 5)
Truck disabled.
Probable Causes and Test Procedures
5. Verify proper line contactor operation:
a. Does the contactor attempt to pull in at startup? (Pull in and quickly disengages)
YES- Proceed to step 5b.
NO- Proceed to step 6.
b. Disconnect wire 075 red to line contactor (Wire 075 RED).
c. Using a 2A Rated jumper wire, connect the open coil terminal to ground. Does the contactor pull-in
and hold?
YES- Coil driver may be damaged in RH Controller. See step 6.
NO- Proceed to step 5d.
d. Verify B+ voltage to coil of contactor (Wire 010 Red):
YES- Contactor coil is open or mechanically damaged, replace contactor.
NO- Verify continuity between KEY-SW IGN to Line contactor (wire 10).
6. Traction Controller Malfunction:
a. If all B+ measurements are in range and proper voltage was seen in all steps, traction controller is
likely at fault. Contact Resident Service Engineering through the Contact Management System.
Troubleshooting 2200 YRM 1415
40
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