ELBOW 6V9330 - Caterpillar

Conditions Which Generate This Code:The alarm module (ALM) is standard. The alarm module is mounted on the front panel. The alarm module is used in order to satisfy the requirements of the customer. The alarm module may be used in order to satisfy National Fire Protection Association (NFPA) requirements by annunciating the presence of a diagnostic code.The ALM communicates with the GSC by a serial data link. When the data link malfunctions, all of the indicators on the ALM, that are controlled by the data link, flash at a rate of .5 Hz.Note: Diagnostic codes are created when the harness connector is disconnected from the GSC during the troubleshooting procedures. Clear the created diagnostic codes after the particular problem is corrected and the diagnostic code is cleared. The possible cause of a CID 0333 FMI 03 diagnostic code is a short to "B+".The GSC treats a CID 0333 FMI 03 as an alarm fault. Clear the diagnostic code from the fault log after troubleshooting is complete.Note: If a CID 0333 FMI 03 is active on the upper display and no alarm module is installed, then check the terminal strips on the subpanel for a short. Perform the check from the signal wire to "B+". Also, check the customer connection box for a short from the alarm data signal wire to "B+".Test Step 1. CHECK IF THE DIAGNOSTIC CODE IS ACTIVE
Turn the engine control switch (ECS) to the OFF/RESET position and then turn the ECS to the STOP position.
Press the "Alarm Codes" key.
Observe the upper display for a CID 0333 FMI 03. The diagnostic code is active if the upper display shows a CID 0333 FMI 03.
If the diagnostic code is not showing, enter the service mode and view the fault log. Check the upper display if the diagnostic code is active.Expected Result:A CID 0333 FMI 03 is active.Results:
OK - A CID 0333 FMI 03 is active. Proceed to test step 2.
NOT OK - A CID 0333 FMI 03 has not occurred. The diagnostic code is NOT active. Stop.Test Step 2. CHECK FOR SHORTED DATA LINK WIRE
Disconnect the cable from the battery negative terminal or open the battery disconnect switch. The battery disconnect switch is optional.
Disconnect both ends of the data link wire which are contact 35 of the GSC and terminal 2 of the alarm module.
Measure the resistance from the data link wire to the battery positive terminal of the GSC.Expected Result:The resistance should be greater than 5000 ohms.Results:
OK - The resistance is correct. Proceed to test step 3.
NOT OK - The resistance is NOT greater than 5000 ohms. The data link wire is faulty. Repair: Refer to the system schematic in order to troubleshoot and repair the harness wiring that has failed between the ALM and the GSC. Refer toTesting and Adjusting, "Schematics and Wiring Diagrams" for more information. Stop.Test Step 3. CHECK THE ALARM MODULE
The cable on the battery negative terminal remains disconnected or the battery disconnect switch is opened. The battery disconnect switch is