GOVERNOR GP-UNIT INJECTOR 9Y2675 - Caterpillar

Illustration 1 g00583241
Illustration 2 g00581365
Location of the solenoids (1) Forward high solenoid (2) Reverse solenoid (3) Forward low solenoid (4) The solenoid for the First gear and the second gear (5) The solenoid for the third gear (6) The solenoid for the fourth gearEnsure that the diagnostic code is on hold. Ensure that the diagnostic code is active.Use table 1 in order to determine the solenoids that are energized. Table 1 identifies the solenoids that are energized for each position on the shift lever.
Table 1
Information about the Solenoids    
Solenoid     Number of the Solenoid (2)     Number of the Contact    
Forward High (1)     1     31    
Reverse     2     32    
Forward Low (1)     3     33    
The First Gear and the Second Gear     4     34    
The Third Gear (3)     5     35    
The Fourth Gear (3)     6     36    
Position of the Shift Lever     Solenoid that is Energized    
Neutral     No solenoids are energized.    
Forward 1     3 and 4    
Forward 2     1 and 4    
Forward 3     3 and 5    
Forward 4     1 and 5    
Forward 5     1 and 6    
Reverse 1     2 and 4    
Reverse 2     2 and 5    
Reverse 3     2 and 6    
( 2 ) This number is used in order to identify the solenoids in the manual.
( 1 ) "Solenoid Group A"
( 3 ) "Solenoid Group B"FMI 03 is recorded when the transmission electronic control module senses a short. The short is between the battery and the solenoid.
Check for a short to the battery.
Turn the key start switch to the OFF position.
Disconnect the machine harness from the control module.
Measure the continuity from contact 1 to contact 36.Turn the headlights on and off and turn the heater on and off during the test. This ensures that these circuits are not shorted to the output of the solenoid.The results of the preceding procedure are in the following list:
There is not continuity. The solenoid harness does not have a short to the battery. Proceed to 2.
There is continuity. The solenoid harness has a short to the battery. Repair the harness or replace the harness.
Check for a short to other solenoid's outputs.
Verify that the key start switch is in the OFF position.
Disconnect the machine harness from the control module.
Measure the continuity from contact 36 to contact's for the other solenoid's outputs.The results of the preceding procedure are in the following list:
There is not continuity. The solenoid harness does not have a short. Inspect the harness connector and the contacts. Verify that the active fault is present. If the active fault is present the transmission electronic control module is faulty. Replace the transmission electronic control module. Refer to Testing and Adjusting, "Electronic Control Module (ECM) - Replace".
There is continuity. The solenoid harness has a short. Repair the harness or replace the harness.