BODY 4209808 - Caterpillar

Illustration 4 g02219353
View from below of the Solenoid bank (1) Park Brake Solenoid (Wire 374-PK) (2) Counterbalance Lock Solenoid (Wire X771-YL) (3) Auger Raise Solenoid (Wire 787-WH) (4) Screed Float Solenoid (Wire A905-GN) (5) Screed Raise Solenoid (Wire F742-PU) (6) Counterbalance Solenoid (Wire T841-PK) (7) Counterbalance Standby Solenoid (Wire T840-PU) (8) Auger Lower Solenoid (Wire 781-PK) (9) Propel Mode (Gear) Shift Solenoid (Wire 334-BU)This diagnostic code is associated with the Counterbalance Standby Solenoid (7). The FMI 05 means that the LH Operator ECM has detected that the current for the solenoid circuit is below normal.Note: The LH Operator ECM is located under the LH Operator Platform.Conditions that could cause this diagnostic code to be activated are:
The energize circuit of the solenoid is open.
The return circuit of the solenoid is open.
The solenoid has failed.
The ECM has failed. This situation is unlikely. Note: Before performing this procedure, inspect the harness connectors that are involved in the circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all connections in the circuit are clean, secure, and in good condition. If a problem with a connection is found, correct the problem and verify that this diagnostic code is active before performing this procedure. System Response:When this diagnostic code is active, the following occurs:
Counterbalance system is disabled.
Operator station fault lamp is active.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.Note: The resistance of the solenoid coil should be 27 1.4 ohms at 20 °C (68.0 °F).Test Step 1. CHECK THE SOLENOID
Disconnect the machine harness from the solenoid at the Counterbalance Standby hydraulic valve.
At the machine harness connector for the solenoid, place a jumper wire from contact 1 (wire T840-PU) to contact 2 (wire H865-BR).
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
Observe the status of the CID 2591 FMI 05 diagnostic code.Expected Result:The CID 2591 FMI 05 diagnostic code is no longer active. A CID 2591 FMI 06 diagnostic code becomes active when the jumper wire is connected.Results:
YES - The CID 2591 FMI 05 diagnostic code is no longer active. A CID 2591 FMI 06 diagnostic code becomes active when the jumper wire is connected. The solenoid has failed.Repair: Repeat this Test Step "CHECK THE SOLENOID" in order to verify the solenoid failure. The resistance of the solenoid coil should be 27 1.4 ohms at 20 °C (68.0 °F). Replace the solenoid. Verify that the new solenoid corrects the problem.STOP
NO - The CID 2591 FMI 05 diagnostic code remains active. The jumper wire does not affect the status of the active diagnostic code. The solenoid is not causing the problem. Proceed to Test Step 2.Test Step 2. CHECK THE CIRCUIT FOR AN OPENThe jumper wire that was installed in the previous Test Step remains in place.
Turn the disconnect switch and the key start switch to the