FITTING GP 2484343 - Caterpillar

Illustration 1 g01403925
Service Brake Dump Solenoid connectionsThis diagnostic code is associated with the Service Brake Dump Solenoid. The solenoid is connected to an ON/OFF output of the Machine ECM. The FMI 06 means that the ECM has detected that the electrical current in the solenoid circuit is above normal.When the Travel Control Pedal is fully depressed, the Service Brake Pedal Switch is depressed. When this occurs, system voltage will be directed to the Service Brake Dump Solenoid through Fuse 29 and the switch contacts. This results in the Service Brake being engaged. The ECM monitors the circuit and the ECM can also energize the Service Brake Dump Solenoid under certain machine conditions.Conditions that could causes this diagnostic code to be activated are:
The energize circuit of the solenoid is shorted to a ground source.
The solenoid has failed.
The ECM has failed. This is unlikely. The conditions that can cause the ECM to activate the FMI 06 diagnostic code will most likely also cause the 10 amp SVC Brake Fuse 29 to open. If the fuse opens only when the Service Brake Pedal Switch IS activated, either one of the solenoid circuits is grounded or the solenoid has failed. Proceed to the test steps in order to isolate the problem.If the fuse is open when the Service Brake Pedal Switch is NOT activated, the energize circuit between the fuse panel and the switch is grounded. Investigate this part of the energize circuit and correct the problem. after this problem has been corrected, verify that the CID 2595 FMI 06 diagnostic code is still active before proceeding with this procedure.If the fuse opens only when the Service Brake Pedal Switch IS activated, the problem could be that one of the solenoid circuits is grounded or that the solenoid has failed. If this condition is occurring, proceed with this procedure.This procedure should not require entry into any enclosures that contain hazardous voltage components and should not require any hazardous voltage connections to be disconnected.When an area that contains hazardous voltage components must be entered for a service procedure, the "Safe Shutdown Procedure for Electric Drive Tractors" procedure must be performed before any enclosures that contain hazardous voltage components are opened or before any hazardous voltage connectors are disconnected. Refer to the Troubleshooting, "Electrical Maintenance Guidelines" section of this manual. Perform the "Safe Shutdown Procedure for Electric Drive Tractors" procedure before any of the hazardous voltage areas are opened or before hazardous voltage connectors are disconnected.Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear these diagnostic codes when the original diagnostic code has been corrected.Test Step 1. CHECK THE SOLENOIDThe Service Brake Pedal Switch is not activated.
Turn the disconnect switch and the key start switch to the ON position. DO NOT START THE ENGINE.
While observing the status of the active CID 2595 FMI 06 diagnostic code, disconnect the Service Brake Dump Solenoid from the machine harness. Expected Result:The active CID 2595 FMI 06 diagnostic code changes to