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EDGE-CUTTING 4Z9188 - Caterpillar



4Z9188 EDGE-CUTTING Caterpillar parts EDGE
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81
Alternative (cross code) number:
CA4Z9188
4Z-9188
4Z9188
Caterpillar 4Z9188 EDGE-CUTTING
Weight: 406 pounds 184 kg.

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Machine ECM
The following is a table of Diagnostic Trouble Codes (DTC's) associated with the sensor power supply circuits of the machine.
Table 1
Machine ECM (MID 299)
DTC Code Description System Response
41 -6 8 VDC Supply : Current Above Normal Multiple failures of systems or components associated with this code.
262 -6 5 VDC Supply : Current Above Normal Multiple failures of systems or components associated with this code.
269-6 Sensor Power Supply (24 V) : Current Above Normal Multiple failures of systems or components associated with this code. The diagnostic code is recorded when the interface module indicates that the current of the sensor supply circuit is too high.Possible causes of an FMI 6 Diagnostic code are:
The sensor supply output is shorted to ground.
A sensor in the power supply circuit has failed.
The Machine ECM may have failed. This situation is unlikely.Note: Poor harness connections are often the cause of a problem in electrical circuits. Before performing this procedure, inspect all of the connectors involved in the circuit. Verify that all of the connections in the circuit are dry, clean, secure, and in good condition. Each pin and socket in the connectors should mate correctly when the connectors are fastened together. Check for exposed wires at the connectors for nicks or abrasions. If a problem is found with any of the connections, correct the problem. Verify that diagnostic code is still active, before performing the following procedures. For more information, refer to Testing and Adjusting, "Electrical Connector - Inspect".Perform a wiggle test on the sensor circuit of the machine wiring harness, using Cat®ET. The wiggle test can be used to detect open or shorted connections in the machine wiring harness. Reconnect all harness connectors. Make sure that the connectors are fully seated. Observe that the clips for each connector are fastened. For more information, refer to Testing and Adjusting, "Electrical Connector - Inspect".
Illustration 1 g03874247
Schematic of the 5 VDC Sensor Supply Circuit
Illustration 2 g03874250
Schematic of the 8 VDC Sensor Supply Circuit
Note: The diagrams above are simplified schematics of the Machine ECM connections. The schematics are electrically correct, however, not all of the possible harness connectors are shown. Refer to the latest revision of Electrical Schematic, UENR6417 for the complete schematic for sale models 325F CR.Diagnostic Trouble Code Procedure
Note: Prior to beginning this procedure, inspect the harness connectors involved in this circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all connections in the circuit are clean, secure, and in good condition. If a problem with a connection is found, correct the problem and verify that the diagnostic code is active before performing a troubleshooting procedure.
Table 2
Troubleshooting Test Steps Values Results
1. Check The Sensor Supply Voltage At The ECM
A. Turn the key start switch and the disconnect switch to the ON position.
B. Check voltage at the ECM connector from the contact for the supply of the sensor to the ground contact. Use the 7X-1710 Cable Probes to measure the voltage. Do NOT disconnect the machine harness from


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