HOSE AS 4604287 - Caterpillar

Table 1
Diagnostic Trouble Codes    
J1939 Code    Code Description    Comments    
4212-13     Fan Drive Bypass Command Status : Out of Calibration     The fan speed is not calibrated to the fan control solenoid.
The code is logged.    The Electronic Control Module (ECM) supplies current to the engine fan control solenoid. The engine fan control solenoid controls the pressure to the fan pump by allowing oil to bypass the fan pump. The fan pump drives the fan. For accuracy, the ECM must determine the relationship between the current to the engine fan control solenoid and the actual fan speed. The electronic service tool is used to calibrate the current to a known fan speed.Note: The ECM will use a nominal current to drive the engine fan control solenoid on the initial calibration. The ECM uses the last calibrated value as the starting point on subsequent calibrations.
Connect the electronic service tool to the diagnostic connector.
Select the "Service" tab and select "Calibrations". Start the "Fan Calibration".
Meet the required conditions in order to proceed with the calibration. Follow the directions that are provided on the electronic service tool.
Measure actual fan speed with the following service tools and Software License, NETG5044:
348-5430 Multi-Tool Gp
308-7264 Multitach Tool Gp ()
If actual fan speed matches the fan speed on the electronic service tool, press the "Next" button.
If the actual fan speed does not match the fan speed on the electronic service tool, adjust the current in order to change fan speed.
When actual fan speed matches the fan speed on the electronic service tool, the calibration is complete. Follow the directions that are provided on the electronic service tool.