TM 10-3930-675-20-1
0026 00-1
TRANSMISSION TEMPERATURE TROUBLESHOOTING
0026 00
THIS WORK PACKAGE COVERS
Error Code 637 - Transmission Sump Temperature Sen-
sor Failure, Open Circuit or Short Circuit to Battery
Error Code 638 - Transmission Sump Temperature Sen-
sor Failure, Short Circuit to Chassis
Error Code 639 - Converter Output Temperature Sensor
Failure, Open Circuit or Short Circuit to Battery
Error Code 640 - Converter Output Temperature Sensor
Failure, Short Circuit to Chassis
Error Code 783 - Sump Temperature Critical Threshold
[212°F (100°C)] Failure
Error Code 795 - Converter Output Temperature Critical
Threshold [248°F (120°C)] Failure
INITIAL SETUP
References
TM 10-3930-675-10
LO 10-3930-675-12
ECU Transmission (A34650.0200) (WP 0199 00-12)
Equipment Condition
Cab moved to transport position (TM 10-3930-675-
10)
NOTE
•
Refer to WP 0004 00 for additional troubleshooting guidance, information, and illustrations
that locate critical components.
•
Refer also to illustration at end of work package for component location.
Table 1. Error Code 637 - Transmission Sump Temperature Sensor Failure, Open Circuit or
Short Circuit to Battery Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 637 - Transmission Sump
Temperature Sensor Failure, Open Circuit or
Short Circuit to Battery
1. Remove cab transmission and
steering ECU panel cover and
check
transmission
ECU
connector
for
proper
connection (WP 0079 00).
Connect loose or disconnected
connector.
2. Remove cab rear wall center
panel
cover
and
check
connector X172 for proper
connections.
Connect loose or disconnected
connectors.
3. Move
cab
to
transport
position
and
remove
transmission access covers
(WP 0135 00).
