TM 10-3930-675-24-1
AXLE BRAKE COOLING SYSTEM TROUBLESHOOTING - CONTINUED
0032 00
Table 3. Error Code 414 - Brake Cooling Bypass Valve,
Short Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 414 - Brake Cooling Bypass Valve,
3. Check resistance. Disconnect a. If resistance is not as specified,
Short Circuit Failure - Continued.
the rear brake cooling bypass
remove the radiator splash
solenoid 6049-2 located under
shield to access the front brake
the vehicle just behind the cab.
cooling bypass valve (WP
Check resistance at X168
0143 00).
between pins 3 and 4 (WP b. Disconnect brake cooling
bypass solenoid 6049-1 and
be 26 to 32 Ohms.
check resistance of solenoid
coil. Resistance should be 36
to 32 Ohms with no continuity
to ground.
c. If resistance is as specified,
check wires GY and BK to the
6049-1 connector for short or
ground (WP 0048 00-7).
d. Replace shorted or grounded
front brake cooling bypass
valve or connector cable (WP
0113 00).
4. Check resistance. Disconnect a. If resistance is not as specified,
the rear brake cooling bypass
replace the rear brake cooling
solenoid 6049-2 and check
bypass valve (WP 0142 00).
resistance of solenoid coil. b. If resistance is as specified,
Resistance should be 26 to 32
check wires GY and BK to the
Ohms with no continuity to
6049-2 connector for short or
ground.
ground (WP 0048 00-7).
c. Replace shorted or grounded
6049-2 connector cable (WP
0113 00).
5. Check wire A1564 (WP 0048 a. Replace damaged or grounded
00-7) and wires 16012 and
wire.
A17712 (WP 0048 00-19) for b. Repair or replace damaged
continuity and for continuity to
connector (WP 0113 00).
ground.
6. Check ECU (792) pin 58 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).
END OF WORK PACKAGE
0032 00-7/(0032 00-8 Blank)
