FILTER GP-WATER SEP & FUEL 4238522 - Caterpillar

System Operation Description:Use this procedure to troubleshoot a suspected problem with one of the circuits that are for the indicator lamps or use this procedure if one of the diagnostic codes in Table 1 is active or easily repeated.
Table 1
Diagnostic Codes Table
Description Conditions which Generate this Code System Response
323-3 Engine Shutdown Lamp : Voltage Above Normal While the engine fault output is activated, the Electronic Control Module (ECM) detects a short circuit or a short to the +Battery in the circuit that is for the "Engine Fault" indicator. The code is logged.
The alarm output is activated.
The output driver automatically resets and the output driver continues to try to activate the circuit component.
324-3 Warning Lamp (Action) : Voltage Above Normal While the action lamp output is activated, the ECM detects a short circuit or a short to the +Battery in the circuit that is for the "Action Alarm" indicator.
443-3 Crank Terminate Relay : Voltage Above Normal While the crank terminate output is activated, the ECM detects a short circuit or a short to the +Battery in the circuit that is for the "Crank Terminate" indicator.
445-3 Run Relay : Voltage Above Normal While the output for the engine running output is activated, the ECM detects a short circuit or a short to the +Battery in the circuit that is for the "Engine Running" indicator. The ECM has four outputs that are used to indicate the status of engine operation: engine running output, crank terminate output, action alarm output and engine fault output. These outputs can be used to energize indicator lamps or the outputs can be used to interface with other controls.The ECM opens an internal circuit in order to turn off the output. The ECM closes the circuit in order to turn on the output. When the circuit is closed and the output is on, the ECM allows a maximum current of 0.3 amperes to flow through the circuit to a ground circuit that is inside the ECM.If excessive current flows through the circuit, a diagnostic code is generated. A short circuit to the +Battery side will also activate a diagnostic code.Note: These circuits do not sink enough current for illumination of standard incandescent lamps. If a lamp is burned out, replace the lamp with the correct part number that is specified in the engine's Parts Manual.The following information defines the ECM outputs that are for the indicator lamps:Engine Running Output - This output indicates that the engine is in the "Run" status. The output becomes active at the beginning of the engine's crank cycle. The output remains active until the beginning of engine shutdown.Crank Terminate Output - This output indicates that the engine rpm is greater than the programmed engine speed that is required for disengagement of the starting motor. The output becomes active at the end of the engine's crank cycle. The output remains active until the completion of engine shutdown.Action Alarm Output - This is the alarm output. This output indicates that the ECM has detected