GEAR 0990203 - Caterpillar

Illustration 1 g02357696
Power Shift Pressure solenoid circuit schematic
This diagnostic code is for the Power Shift Pressure solenoid. An FMI 06 indicates the machine ECM has determined that the solenoid circuit current is above normal. Possible causes for this diagnostic code are:
The solenoid has failed.
The solenoid energize circuit is shorted to ground.
The ECM may have failed, but is unlikely.Note: Poor connections are often the cause of a problem in electrical circuits. Before performing this procedure, inspect all the machine harnesses and connectors involved in the circuit. Make sure to verify that all of the connections in the circuit are clean, secure, and in good condition. Correct any problems found with any of the connections. Verify the diagnostic code CID 0581 FMI 06 is still active, before continuing with this procedure.Note: The following test procedure may create other diagnostic codes. Ignore all the created diagnostic codes now, but clear all those codes after the cause for the original diagnostic code has been corrected. Test Step 1. CHECK THE SWITCH.
Table 1
Switch State Switch Contacts Status
Active Contacts 5 & 6 and 11 & 12 Closed
Active Contacts 5 & 4 and 11 & 10 Open
Inactive Contacts 5 & 6 and 11 & 12 Open
Inactive Contacts 5 & 4 and 11 & 10 Closed
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the Backup Switch from the panel.
Toggle the switch from one state to the other. On each of the switch two states, check for continuity on the switch pins listed on Table 1. Expected Result:The switch continuity agrees with table 1.Results:
YES - The switch continuity is correct. Go to Test Step 2.
NO - The switch continuity is not correct. The Backup Switch has failed. Repair: Replace the switch.Go to Test Step 4.Test Step 2. CHECK THE SOLENOID.
The disconnect switch and the starter keyswitch remain in the OFF position.
Reconnect the backup switch.
Disconnect the machine harness from the Power Shift Pressure solenoid.
Turn the disconnect switch and the key start switch to the ON position.
Observe the status of the diagnostic code. Expected Result:The CID 0581 FMI 06 diagnostic code is active. Results:
YES - The diagnostic code is still active. The solenoid is not causing the problem. Go to Test Step 3.
NO - The CID 0581 FMI 06 diagnostic code is not active and has been replaced by an active CID 0581 FMI 05 diagnostic code. The solenoid has failed.Repair: Replace the solenoid. Go to Test Step 4.Test Step 3. CHECK THE SOLENOID CIRCUIT FOR A SHORT TO GROUND.
Turn the key start switch and the disconnect switch to the OFF position.
The harness connector remains disconnected from the solenoid.
Disconnect both the J1 and J2 harness connector from the machine ECM.
At the J2 machine harness connector, measure for resistance from contact J2-4 (wire L969-WH(White)) to all possible sources of ground in both the J1 and J2 ECM harness connectors. Expected Result:Each resistance measurement is more than 5000 ohms.Results:
YES - Each resistance measurement is more than 5000 ohms. Go to Test Step 4.
NO - Each resistance measurement