CLIP 2G8823 - Caterpillar

Test Results Table
Note: Requires Cat ET, Communication Adapter 3 and Multimeter.Instructions:
Reference the Power Inverter Test - Manual for Directions.
Before troubleshooting be sure to download Engineering Data from Generator Inverter ECM.
Make sure the “Electrical Shutdown and Voltage Discharge” procedure has been performed.
Fill out the table as indicated in the test procedure.
Table 2
Worksheet
Specify Power Inverter Part Number
Specify Power Inverter Serial Number
Power Inverter Voltage checks
Expected Value Measured Value
Power Inverter Phase A Start to Phase A Finish Voltage Measurement, Transistors OFF 0 1V
Power Inverter Phase A Start to Phase A Finish Voltage Measurement, Transistors ON 45 5V
Power Inverter Phase B Start to Phase B Finish Voltage Measurement, Transistors OFF 0 1V
Power Inverter Phase B Start to Phase B Finish Voltage Measurement, Transistors ON 45 5V
Power Inverter Phase C Start to Phase C Finish Voltage Measurement, Transistors OFF 0 1V
Power Inverter Phase C Start to Phase C Finish Voltage Measurement, Transistors ON 45 5V Cat ET Screens
Turn the key start switch to the ON position.
Connect the COM Adapter 3.
Illustration 3 g03717317
ECM Select screen
Open the Cat ET program and establish communication. Select the "Generator Power Inverter" ECM. See Illustration 3.
Select the "Diagnostics" tab on the top tool bar.Cat ET should now display all available "Diagnostic Tests".
Illustration 4 g03729843
Diagnostic Tests menu
Select the “Power Inverter Test - Manual” Refer to 4.
Take the necessary steps to satisfy the test set-up conditions listed on the Cat ET screen. When machine conditions have been met, select the "Next" button.
“Perform the Power Inverter Phase A Start to Phase A Finish Power Transistor Test” should become bold on the screen.Phase Cable disconnect at Power Inverter
Illustration 5 g03721434
(16) Power Inverter
(35) Red lightsMake sure that there are no red lights (35) on Power Inverter (16).
Illustration 6 g03721436
(36) Screws
(37) Inverter Access PlatesRemove 24 screws (36) and three inverter access plates (37).
Illustration 7 g03721438
(38) Power Inverter to Generator wires
(39) Bolts
(40) Inverter Nut
(41) NutLocate Power Inverter to Generator wires (38).Remove bolts (39) for one set of Power Inverter to Generator wires (40).Back off nut (41) and rubber washer. Remove ferrule to inverter nut (40). Remove Power Inverter to Generator wires (38).
Table 3
ERROR DESCRIPTION ACTIONS TO PERFORM
Error ID 0002 Active Diagnostic Present Check for communication fault between Machine ECM and either the Accessory Power Converter (APC) or Generator Power Inverter ECM. Clear active diagnostic codes.
Error ID 0009 Service Test aborted by ECM Check for a communication fault. Update software to latest version from SIS web.
Error ID 0x114F DC Link above threshold The DC link voltage is above the minimum thereshold of 50 VDC. Verify the proper electrical shutdown has been preformed and then rerun the test.
Error ID 0x1011 Engine running Engine needs to be at 0 rpm for the test. Shut down the engine. Perform the Troubleshooting, "Electrical Shutdown and Voltage Discharge" procedure.
Error ID 0x1150 Key switch off Key switch to the Generator Power Inverter ECM has been turned off before or during the test. The test must be performed with key switch in the ON position. Check key switch to Generator Power Inverter ECM.
EID 923-928 Generator signal