FILTER AS-FUEL 4316998 - Caterpillar

Troubleshooting Problem List
Torque converter pressure is high.
Torque converter pressure is low.
The torque converter overheats.
The torque converter does not respond correctly for the torque converter pedal.
The lockup clutch does not engage.
The lockup clutch engages intermittently.
The impeller clutch does not engage.Troubleshooting
Note: In the following section, when components are referenced with a number, refer to the "Hydraulic System Schematic".Check for any active service codes within the power train electronic control. Solve any active service codes within the power train electronic control. Use the built-in electrical diagnostics that are performed with the Computerized Monitoring System and with the electronic control module.Note: This machine is equipped with a power train electronic control. The power train electronic control has a built-in diagnostic system that detects faults in the electronic system of the power train.
Table 1
Troubleshooting Information for the Calibration of the Impeller Clutch    
Error Message     Probable Causes     Possible Corrective Actions    
Torque converter output speed is low.     Engine speed is too low.     Use the throttle lock to set the engine speed above the following minimum values:
2050 rpm ( 988G, 834G, 836G)
1650 rpm (992G,994D,854G)    
Speed sensor problem Check for fault codes on the torque converter output speed sensor.
Check the sensor connector.
Adjust or replace the sensor, if necessary.    
Impeller clutch pressure is too low. Check valve function.
Check the connector.
Check ECM output.
Check