BOLT-SOCKET HEAD 0950705 - Caterpillar

Illustration 1 g00561833
Schematic of the Transmission Direction Solenoid Valve (High Forward) (1) Transmission direction solenoid valve (High Forward). (2) Power train Electronic Control Module (ECM).The CID 0641 FMI 05 diagnostic code is recorded when the current of the solenoid circuit is below normal. The power train Electronic Control Module (ECM) detects the fault. Transmission direction solenoid valve (1) is located on the transmission control valve.Note: Ensure that the diagnostic code CID 0641 FMI 05 for the solenoid is active. Before you perform this procedure, refer to Table 1 in order to determine the contact on the connector and the wire number that corresponds to the failed circuit.
Table 1
Information on Direction Solenoid Valve    
Fault    Connector Contact No. (1)    Wire No.    
Transmission Direction Solenoid Valve (High Forward)     J1-10     751-GN    
( 1 ) Connector contact of the power train ECM.Note: All the solenoid return lines are joined together. The lines connect to contact J1-7 on connector J1 of power train ECM (2) (wire 921-WH).
Check for an open coil on the transmission direction solenoid valve (High Forward).
Turn the key start switch and the battery disconnect switch to the OFF position.
Disconnect the machine harness from the suspected solenoid.
At the connector for transmission direction solenoid valve (1), measure the resistance between contact 1 and contact 2. The resistance should be about 30 Ohms.Expected Result: The resistance is about 30 Ohms.Results:
OK - There is about 30 Ohms between the contacts. Proceed to Step 2.
NOT OK - The resistance is greater than 30 Ohms. Replace the coil on the suspected solenoid. STOP.
Check the ground return circuit.
The key start switch and the battery disconnect switch remain in the OFF position.
Disconnect the machine harness connector J1 from power train ECM (2) .
At the machine harness connector for the faulty solenoid, measure the resistance between contact 2 (wire 921-WH) and contact 7 of connector J1.Expected Result: There is continuity. Results:
OK - There is continuity. The ground return circuit is correct in the machine harness. Go to Step 3.
NOT OK - There is no continuity between the contacts. The machine harness is faulty. Wire 921-WH is open in the machine harness. Replace the machine harness or repair the machine harness. STOP.
Check the machine harness for continuity.
The key start switch and the battery disconnect switch remain in the OFF position.
Reconnect the suspected solenoid to the machine harness.
Disconnect the machine harness connector J1 from power train ECM (2) .
At the machine harness connector J1, check continuity between contact 7 and contact 10.Expected Result: There is continuity.Results:
OK - There is continuity. Go to Step 4.
NOT OK - There is no continuity between the contacts. The machine harness is faulty. Replace the machine harness or repair the machine harness. STOP.
Check if the fault is still present.
Inspect the contacts and clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the battery disconnect switch to the ON position.
Start the engine.
Enter the service mode of the Caterpillar Monitoring System. Clear all inactive faults.
Attempt to operate the machine in all gears.