VALVE GP-CONTROL 4415945 - Caterpillar

Transmission Clutch Fill Calibration
The quality of the shifting of the transmission can be affected by the calibration of the clutch fill. The calibration procedure is automatic. The "Calibration of the Transmission Clutch Engagement" (submodes 31 through 35) should be performed prior to performing the "Transmission Clutch Fill Calibration".During this calibration, error codes ("EXX") can occur. The error codes appear in the display area if there is a problem with the calibration or if there is a problem with the results of the calibration. The error codes that can appear are listed below:E01 - There is a problem with the active clutch solenoid or the speed sensor.E04 - The transmission direction control lever is not in NEUTRAL.E05 - The transmission oil temperature is below the threshold of 40 °C (104 °F) or there is a problem with the transmission oil temperature sensor.E06 - The engine speed is below the threshold of 1500 rpm.E07 - The parking brake is not on.E08 - CID 0299 (sensor) is active. Correct the problem. E09 - The machine speed is not zero.E10 - The service brake pedal is pressed.E21 - Clutch 1 is at a limit.E22 - Clutch 2 is at a limit.E23 - Clutch 3 is at a limit.E24 - Clutch 4 is at a limit.E25 - Clutch 5 is at a limit.The calibration software is needed in order to adjust one of the parameters beyond the design specification for error codes E21, E22, E23, E24, or E25. The software will select values that will provide the best performance. An error indicates that something is wrong with either the calibration or the control system. Some objects that need to be checked for E21 through E25 are listed below:
The oil and the transmission is fully warmed for the calibration.
The valves are correctly torqued when the machine is cool.
The seals are not worn.
The clutch is not worn beyond the allowable range.
The valve is not damaged.
If a new valve was installed, shift the transmission at least 12 times into a gear that uses the new valve. This must be done before you begin the procedure. Once problems are fixed, run the "Transmission Clutch Fill Calibration" (submode 40) again.Procedure
Table 3
Required Tools
Part Number Description Qty
4C-8195 Control Service Tool 1 Note: The steps of this procedure must be performed exactly. The steps of this procedure must be performed in sequence. This procedure can terminate if any unexpected functions are activated or if a diagnostic code is present. DO NOT change any switch positions. DO NOT move any levers. DO NOT depress any pedals. If there is a problem with the calibration or if there is a problem with the results of the calibration, an error code ("EXX") will appear in the display area.
The "Calibration of the Transmission Clutch Engagement" (submodes 31 through 35) should be performed prior to performing the "Transmission Clutch Fill Calibration".
Illustration 4 g00937242
(1) Modulating valve for clutch 1
(2) Modulating valve for clutch 2
(3) Modulating valve for clutch 3
(4) Modulating valve for clutch 4
(5) Modulating valve for