D7 Track-Type Tractors Information Display Sensor Supply

Sensor Supply - Test

D7 Track-Type Tractors Information Display [M0121055]

D7 Track-Type Tractors Information Display Software - Test

D7 Track-Type Tractors Information Display Module - Flash Program

ELECTRICAL AND STARTING SYSTEM

SENSOR GP

D7 Track-Type Tractors Information Display Sensor Supply - Test

1.1. Display

2.1. Diagnostic Trouble Code Procedure

3.1. FMI 3

4.1. FMI 4

5.1. FMI 6

Display

The following is a list of Diagnostic Trouble Codes (DTCs) that are associated with the sensor power supply circuits of the machine.

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Table 1
Display (MID 053)
J1939	CDL	Code Description	System Response
	145-03	12 VDC Power Supply - Voltage Above Normal	Normal operation with this fault present is possible up to 17 VDC on all supply output pins. Blue screen on all cameras when above 17 VDC. 3900-9 Ethernet fault inhibited when active. Power output will NOT be opened.
	145-04	12 VDC Power Supply - Voltage Below Normal	Blue screens may be displayed on all cameras. 3900-9 Ethernet fault inhibited when active. Power output will NOT be opened.
	145-6	12 VDC Supply: Current Above Normal	The entire display image goes black briefly while this fault is being detected. 3900-9 Ethernet fault is inhibited when active. All supply outputs will be latched opened, resulting in an open circuit reading on the display output pins. The circuit will remain open until the problem is resolved and power is cycled.
	5993-3	12 VDC Supply #1: Voltage Above Normal	Normal operation with this fault present is possible up to 17 VDC on output #1 pins. Blue screen on all cameras when above 17 VDC. 3900-9 Ethernet fault inhibited when active. Power output will NOT be opened.
	5993-4	12 VDC Supply #1: Voltage Below Normal	Blue screens may be displayed on all cameras supplied by output #1. 3900-9 Ethernet fault inhibited when active. Power output will NOT be opened.
	5993-06	12 VDC Power Supply #1 - Current Above Normal	The entire display image goes black briefly while this fault is being detected. 3900-9 Ethernet fault is inhibited when active. This supply will be latched opened, resulting in an open circuit reading on the display output #1 pins. The circuit will remain open until the problem is resolved and power is cycled.
	5994-3	12 VDC Supply #2: Voltage Above Normal	Normal operation with this fault present is possible up to 17 VDC on output #2 pins. Blue screen on all cameras when above 17 VDC. 3900-9 Ethernet fault inhibited when active. Power output will NOT be opened.
	5994-4	12 VDC Supply #2: Voltage Below Normal	Blue screens may be displayed on all cameras supplied by output #2. 3900-9 Ethernet fault inhibited when active. Power output will NOT be opened.
	5994-06	12 VDC Power Supply #2 - Current Above Normal	The entire display image goes black briefly while this fault is being detected. 3900-9 Ethernet fault is inhibited when active. This supply will be latched opened, resulting in an open circuit reading on the display output #2 pins. The circuit will remain open until the problem is resolved and power is cycled.

The camera power supply is the voltage output originating from the display connections.

Possible causes of an FMI 3 diagnostic code are:

Improper wiring connections.
The camera power supply is shorted to +battery.
The display has failed. A failure of the display is unlikely.

Possible causes of an FMI 4 diagnostic code are:

A camera has failed
Too many cameras or extra devices are connected to the supply
Output is overloaded
The display has failed. A failure of the display is unlikely

Possible causes of an FMI 6 diagnostic code are:

Output is overloaded with the most extreme load being a short to ground
Incorrect wiring
The camera power supply output is shorted to ground
A component in the power supply circuit has failed
The display has failed. A failure of the display is unlikely

Diagnostic Trouble Code Procedure

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. If a problem with a connection is found, correct the problem and verify that the diagnostic code is active before performing a troubleshooting procedure. For sensors powered via the fuse panel, check the condition of the appropriate fuse before beginning the troubleshooting procedure.

Identify the active FMI code associated with the components.
Determine which code is present and use the list below to determine which procedure to follow.

FMI 3 diagnostic code, proceed to "FMI 3".
FMI 4 diagnostic code, proceed to "FMI 4".
FMI 6 diagnostic code, proceed to "FMI 6".

FMI 3

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Table 2
Check The Voltage At The Cameras
Troubleshooting Test Steps	Values	Results
1. Turn the start switch and disconnect switch ON. 2. Disconnect the machine harness connector for the cameras. 3. At the machine harness connector for the cameras, measure the voltage between the camera supply contact and the camera return contact.	Voltage reading is correct for the cameras.	OK - The voltage reading is correct for the cameras. Proceed to "Check If The Diagnostic Code Remains", Table 5. NOT OK - The voltage is greater than the supply for the circuit. Proceed to "Check The Power Supply At The Display", Table 3.

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Table 3
Check The Power Supply At The Display
Troubleshooting Test Steps	Values	Results
1. Turn the start switch and disconnect switch to the OFF position. 2. At the harness connector for the display, use a 151-6320 Removal Tool to remove the supply wire and the camera return wire. The harness connector remains connected to the display. 3. Turn the disconnect switch and the start switch to the ON position. 4. Use the multimeter probes to make contact on the connector pins. Measure the voltage at the display pins between the camera supply contact and camera return contact .	Voltage reading is correct for the supply.	OK - The voltage is correct. The display power supply is correct. Install the wires and sockets that were removed from the display connector back into the original locations. Proceed to "Check For A Short In the Harness", Table 4. NOT OK - The voltage measurement is greater than the supply voltage. The measurement is not correct. The display may have failed. Proceed to "Check If The Diagnostic Code Remains", Table 5.

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Table 4
Check For A Short In the Harness
Troubleshooting Test Steps	Values	Results
1. The cameras remain disconnected from the machine harness. 2. The start switch and disconnect switch remain OFF. 3. Disconnect the machine harness connectors from the display. 4. At the display harness connector, measure the resistance between the supply contact and all the other contacts that are used for the display.	Each resistance is greater than 5K Ω.	OK - Each resistance is greater than 5K Ω. Proceed to "Check If The Diagnostic Code Remains", Table 5. NOT OK - One or more readings less than 5 Ω. There is a short between the signal contact and the circuit with the low resistance. Repair: Refer to the complete electrical schematic. Examine all the connectors of the machine harness for possible short circuits. Repair or replace the machine harness. Note: A resistance that is greater than 5 Ω but less than 5K Ω would indicate a loose connection or a corroded connection in the circuit. A resistance measurement that is greater than 5K Ω would indicate an open in the circuit. Proceed to "Check If The Diagnostic Code Remains", Table 5.

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Table 5
Check If The Diagnostic Code Remains
Troubleshooting Test Steps	Values	Results
1. Reconnect all harness connectors. Return machine to normal operating condition. 2. Turn the start switch and the disconnect switch ON. 3. Clear all diagnostic codes. 4. Operate the machine. 5. Stop the machine and engage the safety lock. 6. Check if the diagnostic code is active.	The diagnostic code is no longer present.	OK - The diagnostic code does not exist currently. The initial diagnostic code may have been caused by poor electrical connection or short at one of the harness connections. Resume machine operation. STOP. NOT OK - The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the display may require replacement. Prior to replacing the display, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. STOP.

FMI 4

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Table 6
Check The Cameras
Troubleshooting Test Steps	Values	Results
1. Turn the start switch and disconnect switch to the ON position. 2. Observe the status of the diagnostic code as each camera is disconnected.	The FMI 4 diagnostic code is no longer active when one of the cameras on the supply circuit is disconnected.	OK - The diagnostic code is not active when one of the cameras in the supply circuit is disconnected. The power supply circuit is correct. Repair: Repeat this test step to determine the camera that causes the problem. Replace the camera that is causing the problem. Proceed to "Check If The Diagnostic Code Remains", Table 9. NOT OK - The diagnostic code is still active. Disconnecting the cameras in the circuit did not affect the status of the diagnostic code. Proceed to "Check The Signal Circuit For A Short To Ground", Table 7.

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Table 7
Check The Signal Circuit For A Short To Ground
Troubleshooting Test Steps	Values	Results
1. Turn the start switch and the disconnect switch OFF. 2. Disconnect the harness connectors from the display. 3. Measure the resistance between the power supply contact and frame ground. 4. Measure the resistance between the power supply contact and all the other contacts that are used for the display.	Each resistance is greater than 5K Ω.	OK - Each resistance is greater than 5K Ω. The harness circuit is correct. Proceed to "Check The Power Supply At The Display", Table 8. NOT OK - The resistance is less than 5 Ω. The power supply circuit is shorted to ground. The short circuit exists between the power supply circuit and the circuit with the low-resistance measurement. Repair: Repair or replace the machine harness. Proceed to "Check If The Diagnostic Code Remains", Table 9.

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Table 8
Check The Power Supply At The Display
Troubleshooting Test Steps	Values	Results
1. Turn the start switch and disconnect switch to the OFF position. 2. At the harness connector for the display, use a 151-6320 Removal Tool to remove the supply wire and the camera return wire. The harness connector remains connected to the display. 3. Turn the disconnect switch and the start switch to the ON position. 4. Use the multimeter probes to make contact on the connector pins. Measure the voltage at the display pins between the camera supply contact and camera return contact .	Voltage reading is correct for the supply.	OK - The voltage is correct. The display power supply is correct. Install the wires and sockets that were removed from the display connector back into the original locations. Proceed to "Check If The Diagnostic Code Remains", Table 9. NOT OK - The voltage measurement is less than the supply voltage. The measurement is not correct. The display has failed. Proceed to "Check If The Diagnostic Code Remains", Table 9.

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Table 9
Check If The Diagnostic Code Remains
Troubleshooting Test Steps	Values	Results
1. Reconnect all harness connectors. Return machine to normal operating condition. 2. Turn the start switch and the disconnect switch ON. 3. Clear all diagnostic codes. 4. Operate the machine. 5. Stop the machine and engage the safety lock. 6. Check if the diagnostic code is active.	The diagnostic code is no longer present.	OK - The diagnostic code does not exist currently. The initial diagnostic code may have been caused by poor electrical connection or short at one of the harness connections. Resume machine operation. STOP. NOT OK - The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the display may require replacement. Prior to replacing the display, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. STOP.

FMI 6

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Table 10
Check For A Short To Ground
Troubleshooting Test Steps	Values	Results
1. Turn the start switch and the disconnect switch OFF. 2. Disconnect the machine harness from the display. 3. At the display harness connector, measure the resistance between frame ground and the contact for the supply of the camera.	The resistance is greater than 5K Ω	OK - The harness circuit resistance is correct. Verify that the diagnostic code is present. Repair: Perform this procedure again. Also, recheck if the diagnostic code is active. Proceed to "Check If The Diagnostic Code Remains", Table 12. NOT OK - The resistance is less than 5 Ω. The machine harness or a camera has failed. Note: A resistance that is greater than 5 Ω but less than 5K Ω would indicate a loose connection or a corroded connection in the circuit. A resistance measurement that is greater than 5K Ω would indicate an open in the circuit. Proceed to "Disconnect Each Camera And Check For A Short To Ground", Table 11.

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Table 11
Disconnect Each Camera And Check For A Short To Ground
Troubleshooting Test Steps	Values	Results
1. Turn the start switch and the disconnect switch OFF. 2. Disconnect the cameras from the machine harness one at a time. 3. After a camera is disconnected, check the resistance from frame ground to camera supply of the machine harness connector for the display. Repeat for each camera.	The resistance is greater than 5K Ω,	OK - The resistance is greater than 5K Ω. The harness circuit resistance is correct. The camera that was last disconnected has failed. Repair: Replace the camera that caused the short. Proceed to "Check If The Diagnostic Code Remains", Table 12. NOT OK - Resistance is less than 5 Ω after all the cameras have been disconnected from the machine harness. The machine harness is shorted to ground. Repair: Repair or replace the machine harness. Note: A resistance that is greater than 5 Ω but less than 5K Ω would indicate a loose connection or a corroded connection in the circuit. A resistance measurement that is greater than 5K Ω would indicate an open in the circuit. Proceed to "Check If The Diagnostic Code Remains", Table 12.

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Table 12
Check If The Diagnostic Code Remains
Troubleshooting Test Steps	Values	Results
1. Reconnect all harness connectors. Return machine to normal operating condition. 2. Turn the start switch and the disconnect switch ON. 3. Clear all diagnostic codes. 4. Operate the machine. 5. Stop the machine and engage the safety lock lever. 6. Check if the diagnostic code is active.	The diagnostic code is no longer present.	OK - The diagnostic code does not exist at this time. The initial diagnostic code may have been caused by poor electrical connection or short at one of the harness connections. Resume machine operation. STOP. NOT OK - The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the display may require replacement. Prior to replacing the display, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. STOP.