TM 10-3930-675-20-1
0026 00-3
TRANSMISSION TEMPERATURE TROUBLESHOOTING - CONTINUED
0026 00
Table 2. Error Code 638 - Transmission Sump Temperature Sensor Failure, Short Circuit to Chassis
Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 638 - Transmission Sump
Temperature Sensor Failure, Short Circuit to
Chassis - Continued
4. Check transmission electrical
harness
connector
827
located on top of transmission
for proper connection.
Connect loose or disconnected
connectors.
5. Disconnect connector 827,
connector
X172,
and
connector on transmission
ECU.
6. Check continuity to chassis at
connector
827
pin
8,
connector X172 pin 8,
connector 827 pin 9, and
connector X172 pin 9.
a. If continuity is present, repair
or replace connectors (WP
0111 00).
b. If wiring harness must be
replaced, notify SRA.
c. If continuity is not present,
notify SRA.
Table 3. Error Code 639 - Converter Output Temperature Sensor Failure, Open Circuit or Short Circuit
to Battery Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 639 - Converter Output 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).
4. Check transmission electrical
harness connector 766 located
on
top
right
side
of
transmission
for
proper
connection.
Connect loose or disconnected
connectors.
5. Check continuity between
connector 766 pin 1 and
connector X172 pin 12 and
between connector 766 pin 2
and connector X172 pin 13.
a. If continuity is not present,
repair or replace connectors
(WP 0111 00).
b. If wiring harness must be
replaced, notify SRA.
