TM 10-3930-675-24-1
INPUT AND OUTPUT SIGNALS FOR STEERING ECU (792) TROUBLESHOOTING - CONTINUED
0017 00
Lamp, Short Circuit Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Error Code 406 - Crab Steering Control Lamp,
Short Circuit Failure.
Error code 406 is an information type error code. It
may not activate for the operator. The operator may
report the indicator light 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-
ization menu.
1. Inspect the crab steering Replace damaged steering
selection switch for damage.
selection switch (WP 0073 00).
2. Inspect light bulb. Remove the Replace damaged or shorted light
screws from the menu bulb (WP 0073 00).
selection button panel on the
steering column console. Lift
the panel to access the crab
steering selection button. Pull
the light socket down and out
from the console.
3. Check
for
continuity. a. If continuity to ground is
Disconnect connector X177
found, disconnect X153 and
located in the middle panel.
recheck.
Check for continuity to ground b. If continuity to ground is still
on the loose part of X177 at pin
found, check wires 1603 and
3 (WP 0048 00-19). There
A1533 for continuity to
should not be continuity to
ground (WP 0048 00-19).
ground.
c. Replace grounded X177 to
X160 cable or grounded wire
A 1533.
4. Check for continuity to ground a. If continuity to ground is
on the loose part of X153 at pin
found, replace the X153 to
3 (WP 0048 00-19). There
steering column harness (WP
should not be continuity to
0073 00).
ground.
b. If continuity to ground is not
found, check wire A1733 for
continuity to ground (WP
0048 00-19).
c. Replace
grounded
wire
A1733.
5. Check ECU (792) pin 66 for a. Replace damaged ECU (792)
connection or damage (WP
terminal board (WP 0080 00).
0048 00-19).
b. Replace ECU (792) (WP 0080
00).
0017 00-8
