TM 10-3930-675-24-1
AXLE BRAKE COOLING SYSTEM TROUBLESHOOTING - CONTINUED
0032 00
Table 1. Error Code 191 - Temperature in Front Axle
Above Critical Threshold Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 191 - Temperature in Front Axle
2. Enter
diagnostic
menu a. Under normal or higher
Above Critical Threshold - Continued.
"EXTRA FUNCT" 12(13) to
ambient temperatures, the
determine the brake cooling
BRAKE COOLING should be
status.
"1". Temperature should be
under 95F (35C).
b. If the value is "0", perform
troubleshooting procedure for
ERROR CODE 414 in Table 3
of this work package.
3. Enter
diagnostic
menu a. The normal value should be
"EXTRA FUNCT" 4(13) to
"1".
determine the status of the b. If the value is "0", perform
fording switch. (Fording
troubleshooting procedure for
switch will cut off the cooling
ERROR CODE 426 (WP 0010
fan.)
00).
4. Locate the temperature sensor a. The sensor should have a
762-1 inside the left front hub.
measurable resistance but not
Disconnect the sensor and
shorted or open.
check the resistance of the b. The sensor should not have
sensor. Check resistance to
continuity to ground.
ground.
c. Replace sensor if grounded,
shorted, or open (WP 0093
00).
5. Disconnect the ECU (790) a. If continuity to ground, isolate
connector 1 and the 762-1
and check the following wires.
sensor. Check for continuity to b. Check for continuity to ground
ground at ECU (790)
at wire A1562 (WP 0048 00-
connector 1 at pin 23 (WP
7).
0048 00-7).
c. Check for continuity to ground
at X156 pin 2 (WP 0048 00-7).
d. Check for continuity to ground
at X156 pin 2 (WP 0048 00-7).
e. Repair or replace damaged
wires or connectors (WP 0113
00).
f. Replace shorted sensor harness
(WP 0093 00).
0032 00-2
