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TRUNNION GP 4Z9224 - Caterpillar

4Z9224 TRUNNION GP Caterpillar parts TRUNNION
Alternative (cross code) number:
Caterpillar 4Z9224 TRUNNION GP
Weight: 11 pounds 5 kg.

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Machine ECM
The following is a list of codes associated with the "Window Washer" switch of the machine.
Table 1
Machine ECM (MID 299)
DTC Code Description System Response
2913-3 Window Washer Switch : Voltage Above Normal Switch will not function.
2913-6 Window Washer Switch : Current Above Normal Switch will not function. The "Window Washer" switch has one input to the "Switch Panel". The input is normally open. When a circuit is measured with a voltmeter, an open circuit will measure approximately 8 VDC to ground. A closed circuit will measure approximately 0 VDC to ground. The connections for the "Wiper Control" module are internal to the module. A common ground connection completes most the module circuits.The diagnostic code is recorded when the status of both the signal and ground are open.Possible Causes for an FMI 3 Diagnostic code are:
The ground wire is open.
The signal is permanently open.
The switch has failed.
The ECM has failed. A failure of the Machine ECM is unlikely.Possible Causes for an FMI 6 Diagnostic code are:
A short to ground.
The switch has failed.
The ECM has failed. A failure of the Machine ECM is unlikely.
Illustration 1 g03874600
Connections of the "Window Washer" Switch
Note: The diagram above is a simplified schematic of the Machine ECM connections. The schematic is electrically correct. However, not all of the possible harness connectors are shown. Refer to the latest revision of Electrical Schematic, UENR5374 for the complete schematic for sales models 325F CR.Note: The following test procedure may create other diagnostic trouble codes. Ignore these created diagnostic trouble codes and clear the diagnostic trouble codes when the original diagnostic trouble code has been corrected.Note: The switch in this circuit is enclosed in a module. The switch for this circuit is not independently serviceable. The module must be replaced if the switch fails.Diagnostic Trouble Code Procedure
Note: Prior to beginning this procedure, inspect the harness connectors that are 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. Check the wiring for pinch points or abrasions. Look for and repair areas that indicate wires are exposed. If a problem with a connection is found, correct the problem and verify that this diagnostic code is active before performing a troubleshooting procedure.
Table 2
Troubleshooting Test Steps Values Results
1. Identify Active FMI Code Associated With Sensor Circuit
Code present. FMI 3 diagnostic code, proceed to Test Step 2.
FMI 6 diagnostic code, proceed to Test Step 4.
Begin Process For FMI 3 Troubleshooting HERE
2. Check The Ground Circuit For An Open
A. Turn the disconnect switch and the key start switch to the OFF position.
B. Disconnect the switch from the machine harness.
C. Measure the resistance between frame ground and the "washer" contact on the "Switch Panel".
The reading is less than 5 Ω. OK - The resistance is less than 5 Ω.
Repair: Replace the module for the wiper control.
Proceed to Test Step 3.
NOT OK - The resistance is greater than 5K Ω.
Repair: The "washer" circuit wire is

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