CLAMP 5S4568 - Caterpillar

Illustration 1 g01118122
Schematic of the Solenoid Valve (Automatic Lubrication)
This diagnostic code is recorded when the ECM reads the current of the solenoid as being below normal.The possible causes are listed:
There is an open in the signal circuit.
The solenoid has failed.
The ECM has failed. This is unlikely.Note: The following procedure can create numerous related diagnostic codes. When all harnesses are reconnected, the related diagnostic codes will be shown as being not active. Clear all related diagnostic codes after this procedure is completed.Note: Ensure that CID 0378 FMI 05 for the solenoid is active. System Response:The autolube will not turn ON because the solenoid is NEVER ON.Test Step 1. CHECK THE SOLENOID.
Turn the disconnect switch and the key start switch to the ON position. DO NOT start the engine.
Disconnect the machine harness from the solenoid.
At the machine harness connector for the solenoid, place a jumper wire from contact 1 (wire 801-PK(Pink)) to contact 2 (wire 975-WH(White)).
Observe the status of