TM 10-3930-675-24-1
TRANSMISSION TEMPERATURE TROUBLESHOOTING - CONTINUED
0026 00
Table 1. Error Code 637 - Transmission Sump Temperature Sensor Failure,
Open Circuit or Short Circuit to Battery Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 637 - Transmission Sump
3. Inspect the 827 connector and
If continuity is not present in
Temperature Sensor Failure, Open Circuit or
pins for damage and proper
either wire, or connector 827 is
Short Circuit to Battery - Continued.
connection. Check continuity
damaged, notify Sustainment
of wires 1728 and 1729 (WP
Maintenance to replace engine
and transmission wiring harness.
4. Check continuity. Disconnect a. Repair or replace damaged
ECU (793). Check the
connector (WP 0113 00).
connector and ECU pins 39 b. Replace damaged ECU (793)
and 46 for damage. Check
(WP 0080 00).
continuity of wires A1728 and c. Replace open or shorted wire.
Table 2. Error Code 638 - Transmission Sump Temperature
Sensor Failure, Short Circuit to Chassis Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 638 - Transmission Sump 1. Check connector and pins.
If resistance is not as specified, or
Temperature Sensor Failure, Short Circuit to
Disconnect connector X172
continuity to ground is present,
Chassis.
located in the middle panel
move the cab to the transport
behind the operator's seat.
position (TM 10-3930-675-10)
Check resistance at the loose
and remove the transmission
part of connector X172
front access cover (WP 0142 00).
between pins 8 and 9 and check
pin for continuity to ground
should be 800 to 1,500 Ohms
and there should be no
continuity to ground.
2. Check connector and pins.
Disconnect
and
inspect
continuity to ground is present, or
connector 827 located on the
the 827 connector is damaged,
top of the transmission. Check
replace the transmission (WP
0224 00).
of connector 827 between pins
8 and 9 and check pin for
00-15). Resistance should be
800 to 1,500 Ohms and there
should be no continuity to
ground.
0026 00-2