PIN AS 9W6343 - 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    
Code    Conditions which Generate this Code    System Response    
323-3 Engine Shutdown Lamp : Voltage Above Normal     While the output for the engine shutdown lamp 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 shutdown lamp.     The code is logged.
The alarm output is activated.    
324-3 Warning Lamp (Action) : Voltage Above Normal     While the output for the warning lamp is activated, the ECM detects a short circuit or a short to the +Battery in the circuit that is for the warning lamp.    
443-3 Crank Terminate Relay : Voltage Below Normal     While the output for the crank terminate relay is activated, the ECM detects a short circuit or a short to the +Battery in the circuit that is for the crank terminate relay.    
445-3 Run Relay : Voltage Above Normal     While the output for the run relay is activated, the ECM detects a short circuit or a short to the +Battery in the circuit that is for the run relay.    The ECM has four outputs that are used to indicate the status of engine operation: "Run Relay", "Crank Terminate", "Active Alarm" and "Engine Failure". 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