TM 10-3930-675-20-1
0026 00-5
TRANSMISSION TEMPERATURE TROUBLESHOOTING - CONTINUED
0026 00
Table 4. Error Code 640 - Converter Output Temperature Sensor Failure, Short Circuit to Chassis
Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error
Code
640
-
Converter
Output
Temperature Sensor Failure, Short Circuit to
Chassis - Continued
5. Disconnect connector 766,
connector
X172,
and
connector on transmission
ECU.
6. Check continuity to chassis at
connector
766
pin
1,
connector X172 pin 12,
connector 766 pin 2, and
connector X172 pin 13.
a. If continuity is present, repair
or replace connectors (WP
0111 00).
b. If wiring harness must be
replaced, notify SRA.
7. Perform internal resistance
check on temperature sensor.
Resistance should be 800-
1500 ohm.
If resistance is not as specified,
replace temperature sensor (WP
0095 00).
8. Perform continuity check
between temperature sensor
pin 1 and pin 2 and chassis.
If continuity is present, replace
temperature sensor (WP 0095
00).
Table 5. Error Code 783 - Sump Temperature Critical Threshold [212°F (100°C)]
Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 783 - Sump Temperature Critical
Threshold [212°F (100°C)] Failure
1. Allow
engine
and
transmission to cool.
2. Check coolant level (TM 10-
3930-675-10).
Add coolant as required (TM 10-
3930-675-10).
3. Check radiator top and side
grille for mud, snow or
obstructions.
Clear obstructions.
4. Check loose coolant hoses
and clamps.
Tighten or replace as required
(WP 0064 00 and WP 0113 00).
5. With
engine
idling,
transmission selector lever in
N (Neutral) position, parking
brake applied, and engine at
operating temperature, check
transmission fluid level (TM
10-3930-675-10).
Add transmission fluid as
required (LO 10-3930-675-12).
