AUXILIARY PUMP TROUBLESHOOTING - CONTINUED
Table 2. Error Code 411 - Auxiliary Pump Control, Short Circuit Failure Troubleshooting Procedures.
TEST OR INSPECTION
Error Code 411 - Auxiliary Pump Control, Short
Error code 411 is an information type error code. It
may not activate for the operator. The operator may
report the auxiliary pump is not working. Enter DIAG
STEERING 2(16) in the Diagnostic menu to verify the
code or enable the information type codes in the Initial-
1. Test relay. Remove the plastic
cover from the right rear of the
between terminals 85 and 86 is
cab to access the cab
not 290 to 350 Ohms (WP 0074
distribution box (WP 0074 00).
Open the cab distribution box
to access the relay boards.
Remove relay 350 and test
(WP 0113 00).
Disconnect connector X174
found, disconnect X46 and
located in the middle panel.
Check for continuity to ground b. If continuity to ground is still
on the loose part of X174 at pin
found, check wire 469 for
should not be continuity to
c. Replace grounded X174 to
X46 cable (WP 0113 00).
Disconnect connector X46 and
found, replace wire A469.
connector XK3 located on one b. If continuity to ground is not
of the relay boards. Check for
found, check wire A1745 for
continuity to ground on the
loose part of XK3 at pin 8 (WP
0048 00-47). There should not
be continuity to ground.
4. Check ECU (792) pin 61 for a. Replace damaged ECU (792)
terminal board (WP 0080 00).
b. Replace ECU (792) (WP 0080