D7 Track-Type Tractor Electrohydraulic Systems Operator Control Switch (Switch to Ground)

Operator Control Switch (Switch to Ground) - Test

D7 Track-Type Tractor Electrohydraulic Systems [M0120325]

D7 Track-Type Tractor Electrohydraulic Systems Sensor Supply - Test

D7 Track-Type Tractor Electrohydraulic Systems Solenoid Valve - Test

ELECTRICAL AND STARTING SYSTEM

SWITCH GP

D7 Track-Type Tractor Electrohydraulic Systems Switch Circuits - Test

D7 Track-Type Tractor Electrohydraulic Systems Operator Control Switch (Switch to Ground) - Test

D7 Track-Type Tractor Electrohydraulic Systems Relay - Test

1.1. Implement ECM

2.1. Machine ECM

3.1. Diagnostic Trouble Code Procedure

4.1. FMI 2

5.1. FMI 3

6.1. FMI 4

7.1. FMI 9

8.1. FMI 14

Implement ECM

The following is a list of Diagnostic Trouble Codes (DTCs) that are associated with the operator control switch to ground circuits of the machine.

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Table 1
Implement ECM (MID 82)
J1939	CDL	Code Description	System Response
	490-3	Implement Lockout Switch: Voltage Above Normal	The Implement shutoff switch does not respond to changes in position.
	490-4	Implement Lockout Switch: Voltage Below Normal	The Implement shutoff switch does not respond to changes in position.
	874-3	Mode Select Switch: Voltage Above Normal	The AccuGrade is disabled. A Warning Level 2 Will Be Generated.
	874-4	Mode Select Switch: Voltage Below Normal	The AccuGrade is disabled. A Warning Level 2 Will Be Generated.
	875-3	Manual Select Switch: Voltage Above Normal	The AccuGrade is disabled.
	875-4	Manual Select Switch: Voltage Below Normal	The AccuGrade is disabled.
	1874-3	Winch Lockout Switch: Voltage Above Normal	Winch Lockout will stop working.
	1874-4	Winch Lockout Switch: Voltage Below Normal	Winch Lockout will stop working.
	1883-3	Winch Low Speed Lock Switch: Voltage Above Normal	Winch Low Speed Lock will stop working.
	1883-4	Winch Low Speed Lock Switch: Voltage Below Normal	Winch Low Speed Lock will stop working.
	2114-3	Blade Control Handle Trigger Switch: Voltage Above Normal	A Warning Level 2 Will Be Generated. The "Implement Lockout" solenoid is deactivated (Locked) unless the "Limp Home" mode is selected. All functions of the blade and the ripper are disabled.
	2114-4	Blade Control Handle Trigger Switch: Voltage Below Normal	A Warning Level 2 Will Be Generated. The "Implement Lockout" solenoid is deactivated (Locked) unless the "Limp Home" mode is selected. All functions of the blade and the ripper are disabled.
	3601-3	Automatic Ripper Control Switch: Voltage Above Normal	A Warning Level 2 Will Be Generated. The "Auto Ripper Control" function will be disabled.
	3601-4	Automatic Ripper Control Switch: Voltage Below Normal	A Warning Level 2 Will Be Generated. The "Auto Ripper Control" function will be disabled.

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Illustration 1	g06595855
Schematic of the switch to ground connections

Note: The diagram above is a simplified schematic of the connections for the operator control switches. The schematic is electrically correct. However, not all the possible harness connectors are shown. Refer to the latest revision of the electrical schematic for the specific machine being serviced for the complete schematic.

Machine ECM

The following is a list of diagnostic codes (DTCs) that are associated with the operator control switch to ground circuits of the machine.

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Table 2
Machine ECM (MID 39)
J1939	CDL	Code Description	System Response
	70-2	Parking Brake Switch: Data Erratic, Intermittent, or Incorrect	A Level 2 warning will be activated. The Machine will be operable until the Parking Brake switch is applied, the Machine will then stop until the fault is cleared.
	70-3	Parking Brake Switch: Voltage Above Normal	A Level 2 warning will be activated. The Machine will be operable until the Parking Brake switch is applied, the Machine will then stop until the fault is cleared.

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Illustration 2	g06495527
Schematic of the switch to ground connections

Diagnostic Trouble Code Procedure

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Table 3
Required Tools
Tool	Part Number	Description	Qty
T1	146-4080⁽¹⁾	Digital Multimeter Group	1
	8T-3224	Needle Tip Group	1
	7X-1710	Multimeter Probe Group	1
	8T-8726	Cable Assembly (Three Pin) (3-Pin Breakout)	1
T2	JERD2129	Cat^® Electronic Technician (Cat ET)	1
		Windows-based PC	1
	538-5051	Communication Adapter Gp	1
T3	6V-4148	Connector Repair Kit (Sure Seal)	1
T4	190-8900	Connector Field Repair Kit (Deutsch)	1
T5	175-3700	Connector Repair Kit Deutsch DT	1

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⁽¹⁾	This multimeter can use an RS232C cable to connect to a Laptop computer or Dataview tool gp for troubleshooting.

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.

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 2 diagnostic code, proceed to "FMI 2"
FMI 3 diagnostic code, proceed to "FMI 3".
FMI 4 diagnostic code, proceed to "FMI 4"
FMI 9 diagnostic code, proceed to "FMI 9".
FMI 14 diagnostic code, proceed to "FMI 14"

FMI 2

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Table 4
Inspect The Harness Connections
Troubleshooting Test Steps	Values	Results
1. Turn key start switch and disconnect switch OFF. 2. Inspect all harness connections related to the CAN data link. Make sure that the connectors are clean and tight. 3. Check the connectors for proper mating. Ensure that all the seals are present and in place. 4. Check the harness for signs of damage or abrasion. 5. Check the wires at the connector. Ensure that the wires are secured tightly into the connector. Take care not to pull the wire out of the connector. 6. Check the exposed wires at the connectors for nicks or signs of abrasion. 7. Check for moisture inside the connector.	The machine harness connectors are tight and free of corrosion.	Result: The machine harness connectors are tight and free of corrosion. Proceed to "Verify The Hardware And The Software Part Numbers", Table 5. Result: The machine harness connectors are in need of repair. Repair: Repair or replace the machine harness. Proceed to "Check If The Diagnostic Code Remains", Table 6.

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Table 5
Verify The Hardware And The Software Part Numbers⁽¹⁾
Troubleshooting Test Steps	Values	Results
1. Verify that the following information is correct: The part number of the flash software for the ECM is correct. The part number of the ECM is correct. The part numbers of the sensors are correct.	All the part numbers are correct	Result: All the part numbers are correct. Proceed to "Check If The Diagnostic Code Remains", Table 6. Result: All the part numbers are not correct. Repair: The ECM or the sensors have the wrong part number or incorrect flash software is installed. Flash the correct software or replace the incorrect ECM or the sensor with a module that has the correct part number. Refer to the "ECM Software - Install" section for additional information. Proceed to "Check If The Diagnostic Code Remains", Table 6.

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⁽¹⁾	Consult your Technical Communicator for the correct part numbers of the flash software.

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Table 6
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. 6. Check if the diagnostic code is active.	The diagnostic code is no longer present.	Result: 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. Result: The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the ECM may require replacement. Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. Refer to the "ECM - Replace" section if the ECM needs to be replaced. STOP.

FMI 3

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Table 7
Check System Voltage At The ECM
Troubleshooting Test Steps	Values	Results
1. Turn the disconnect switch and the key start switch to the OFF position. 2. At the J1 harness connector for the ECM, insert a 7X-1710 Multimeter Probe along the power supply. Use the other multimeter probe to make contact to frame ground. 3. Turn the disconnect switch to the ON position. Start the engine and run at half throttle. 4. Measure the voltage between the power supply contact and frame ground. 5. Measure the voltage between the power supply contact and the (-) battery contact at the ECM harness connector.	Both voltages are approximately the same and are within range of the system voltage. 28 ± 1 V for 24 V system.	Result: Each voltage is approximately the same and is within range of the system voltage. Proceed to "Check If The Diagnostic Code Remains" Table 12. Result: The voltages are approximately the same, however the voltages are unstable. There is a large variation in the voltages. Proceed to "Check The Alternator Current Output" Table 10. Result: The positive battery contact to frame ground measurement is stable and within range of the system voltage. However, the measurement between the ECM positive battery contact and the ECM negative battery contact is not always in the correct range. Proceed to "Check The Ground Circuits" Table 8.

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Table 8
Check The Ground Circuits
Troubleshooting Test Steps	Values	Results
1. Turn the key start switch and the disconnect switch to the OFF position. 2. Disconnect the J1 harness connector from the ECM. 3. At the J1 harness connector for the ECM, measure the resistance between each of the negative battery contacts and frame ground. The contacts for the negative battery connections are illustrated in the diagram at the beginning of this procedure.	Each resistance is less than 5.0 Ω.	Result: Each resistance is less than 5.0 Ω. Proceed to "Check The Supply Circuits" Table 9. Result: A resistance is greater than 5K Ω. There is an open circuit or a poor connection in the ground circuit. 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. Repair: The open or poor connection is in the ground circuit. Check all the connectors and splice points that are in the ground circuit. Ensure that all connections are clean, secure, and in good condition. Repair or replace the machine harness. Proceed to "Check If The Diagnostic Code Remains".Table 12.

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Table 9
Check The Supply Circuits
Troubleshooting Test Steps	Values	Results
1. The key start switch and disconnect switch remain OFF. The ECM harness connector remains disconnected. 2. At the J1 harness connector for the ECM measure the resistance between the alternator "B" terminal and each of the positive battery contacts of the J1 harness. The contacts for the five positive battery connections are illustrated in the diagram at the beginning of this procedure.	Each resistance is less than 5.0 Ω.	Result: Each resistance is less than 5.0 Ω. Proceed to "Check If The Diagnostic Code Remains".Table 12. Result: A resistance is greater than 5K Ω. There is an open circuit or a poor connection in the supply circuit. 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. Repair: The open or poor connection is in the ground circuit. Check all the connectors and splice points that are in the ground circuit. Ensure that all connections are clean, secure, and in good condition. Repair or replace the machine harness. Proceed to "Check If The Diagnostic Code Remains".Table 12.

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Table 10
Check The Alternator Current Output
Troubleshooting Test Steps	Values	Results
1. Reconnect the ECM harness connectors. 2. Partially discharge the batteries by cranking the engine for 30 seconds or turning on the lights for about 10 minutes without starting the engine. 3. Turn the disconnect switch and the key start switch to the OFF position. 4. Connect multimeter probes between the alternator "B" terminal and the alternator case. 5. Connect a clamp-on 225-8266 Ammeter Tool Gp or an equivalent ammeter around the output wire. 6. Turn the disconnect switch to the ON position. 7. Start the engine and run the engine at approximately half throttle. 8. Immediately check the alternator output current.	The alternator output current at half throttle is approximately half the alternator full current output rating, and is stable.	Result: The alternator output current at half throttle is approximately half the alternator full current output rating, and is stable. Proceed to "Check The Alternator Voltage Output" 11. Result: The output current of the alternator at half throttle is not stable. There is a large variation in the currents. Repair: Refer to Service Manual, SENR4130 for brushless alternators for further testing and repair procedures. Proceed to "Check If The Diagnostic Code Remains".Table 12.

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Table 11
Check The Alternator Voltage Output
Troubleshooting Test Steps	Values	Results
1. The multimeter and the ammeter are still connected. 2. Run the engine for approximately 10 minutes at half throttle. 3. Check the alternator voltage at terminal "B".	The voltage is within range of system voltage. There is little or no variation in the voltage. 28 ± 1 V for 24 V system.	Result: The voltage is within range of system voltage and is stable. Proceed to "Check If The Diagnostic Code Remains".Table 12. Result: The voltage is not stable. There is a large voltage variation. Repair: Refer to Service Manual, SENR4130 for brushless alternators for further testing and repair procedures. 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 key start switch and the disconnect switch to the ON position. 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.	Result: 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. Result: The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the ECM may require replacement. Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. Refer to the "ECM - Replace" section if the ECM needs to be replaced. STOP.

FMI 4

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Table 13
Check The Battery Voltage
Troubleshooting Test Steps	Values	Results
1. Start the engine and run the engine at high idle for several minutes. 2. Measure the voltage of the battery at the battery posts.	The voltage is within range of system voltage.	Result: The voltage is within range of system voltage. Proceed to "Check The System Voltage At The ECM" Table 14. Result: The voltage is not within the range of system voltage. Repair: Refer to Special Instruction, REHS0354. Proceed to "Check If The Diagnostic Code Remains" Table 15.

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Table 14
Check The System Voltage At The ECM
Troubleshooting Test Steps	Values	Results
1. The engine remains running at high idle. 2. Do not disconnect the machine harness from the ECM. 3. Use the 7x-1710 Multimeter Probe to measure the voltage between the supply contacts and ground contacts.	The voltage is within range of system voltage.	Result: The voltage is within range of system voltage. Proceed to "Check If The Diagnostic Code Remains" Table 15. Result: The voltage is not correct. The machine harness has failed. Repair: Repair or replace the machine harness. Proceed to "Check If The Diagnostic Code Remains" Table 15.

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Table 15
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 key start switch and the disconnect switch to the ON position. 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.	Result: 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. Result: The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the ECM may require replacement. Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. Refer to the "ECM - Replace" section if the ECM needs to be replaced. STOP.

FMI 9

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Table 16
Verify The Hardware And The Software Part Numbers⁽¹⁾
Troubleshooting Test Steps	Values	Results
1. Verify that the following information is correct: The part number of the flash software for the ECM is correct. The part number of the ECM is correct. The part numbers of the sensors are correct.	All the part numbers are correct	Result: All the part numbers are correct. Proceed to "Inspect The Harness Connections", Table 17. Result: All the part numbers are not correct. Repair: The ECM or the sensors have the wrong part number or incorrect flash software is installed. Flash the correct software or replace the incorrect ECM or the sensor with a module that has the correct part number. Refer to the "ECM Software - Install" section for additional information. Proceed to "Check If The Diagnostic Code Remains", Table 24.

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⁽¹⁾	Consult your Technical Communicator for the correct part numbers of the flash software.

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Table 17
Inspect The Harness Connections
Troubleshooting Test Steps	Values	Results
1. Turn key start switch and disconnect switch OFF. 2. Inspect all harness connections related to the CAN data link. Make sure that the connectors are clean and tight. 3. Check the connectors for proper mating. Ensure that all the seals are present and in place. 4. Check the harness for signs of damage or abrasion. 5. Check the wires at the connector. Ensure that the wires are secured tightly into the connector. Take care not to pull the wire out of the connector. 6. Check the exposed wires at the connectors for nicks or signs of abrasion. 7. Check for moisture inside the connector.	The machine harness connectors are tight and free of corrosion.	Result: The machine harness connectors are tight and free of corrosion. Proceed to "Check The Voltage Of The Data Link", Table 18. Result: The machine harness connectors are in need of repair. Repair: Repair or replace the machine harness. Proceed to "Check If The Diagnostic Code Remains", Table 24.

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Table 18
Check The Voltage Of The Data Link
Troubleshooting Test Steps	Values	Results
1. Turn the key start switch and the disconnect switch to the ON position. 2. Connect Cat^® Electronic Technician (Cat ET) Service Tool and verify which ECMs have logged communication diagnostics. At each ECM or device that is not communicating, use an electrical spoon to measure the voltage. One at a time, measure the voltage of the CAN data link wires to frame ground.	The reading is 0. 5V to 4. 5V on each wire.	Result: The voltages of the wires for the data links are correct. Proceed to "Check The Terminating Resistors", Table 21. Result: The voltage is greater than 4. 5 V. Proceed to "Check For A Short To +Battery Circuit In The Data Link", Table 22. Result: The voltage is less than 0. 5 V. Proceed to "Check For Short To Ground In the Data Link", Table 19.

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Table 19
Check For Short To Ground In the Data Link
Troubleshooting Test Steps	Values	Results
1. The key start switch and disconnect switch remain OFF. 2. Disconnect the machine harness connectors from all electronic control modules that use the suspect CAN data link. 3. At the machine harness for the Machine ECM, measure the resistance between frame ground and the positive CAN connector contact of the circuit. 4. At the machine harness for the Machine ECM, measure the resistance between frame ground and the negative CAN connector contact of the circuit.	The reading is greater than 5K Ω.	Result: The harness circuit resistance is correct. Proceed to "Check For A Short Between The Data Link Wires", Table 20. Result: A reading is less than 5 Ω. The machine harness has failed. Repair: There is a short between frame ground and the contacts of the CAN data link circuit in the machine harness. 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 24.

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Table 20
Check For A Short Between The Data Link Wires
Troubleshooting Test Steps	Values	Results
1. The key start switch and the disconnect switch remain in the OFF position. 2. Disconnect the terminating resistors if the resistors are a part of the circuit. 3. Measure the continuity between the data link wires.	The reading is greater than 5K Ω.	Result: The resistance measurement is correct. Proceed to "Check The Terminating Resistors", Table 21. Result: The resistance measurement is not correct. The wires for the data link are shorted together. Repair: Repair the machine harness or replace the harness. Proceed to "Check If The Diagnostic Code Remains", Table 24.

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Table 21
Check The Terminating Resistors
Troubleshooting Test Steps	Values	Results
1. The key start switch and the disconnect switch remain in the OFF position. 2. The terminating resistors remain disconnected. 3. Check the terminating resistor connectors for the following: -Moisture -Corrosion -Damaged Terminals -Loose Connections 4. Measure the resistance between terminal A and B of each terminating resistor that was removed from the CAN circuit.	The reading is approx. 120 Ω.	Result: Both resistance measurements are approximately 120 Ω. The terminating resistors have not failed. Reinstall the terminating resistors. Proceed to "Check For A Short To +Battery Circuit In The Data Link", Table 22. Result: One or both resistance measurements are not approximately 120 Ω. At least one of the resistors is not functioning properly. Repair: Replace the terminating resistor or resistors that have failed. Reinstall the terminating resistor that has not failed. Proceed to "Check If The Diagnostic Code Remains", Table 24.

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Table 22
Check For A Short To +Battery Circuit In The Data Link
Troubleshooting Test Steps	Values	Results
1. The key start switch and disconnect switch are OFF. 2. All related modules remain disconnected from the machine harness. 3. At the machine harness connector for the Machine ECM, measure the resistance between the connector contact for the +Battery and the positive CAN connector contact. 4. At the machine harness connector for the Machine ECM, measure the resistance between the connector contact for the +Battery and the negative CAN connector contact.	The reading is greater than 5K Ω.	Result: The harness circuit resistance is correct. Proceed to "Check The Data Link For An Open", Table 23. Result: A reading is less than 5 Ω. The machine harness has failed. Repair: There is a short between the +battery circuit and one of the CAN data link circuits in the machine harness. 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 24.

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Table 23
Check The Data Link For An Open
Troubleshooting Test Steps	Values	Results
Note: Two 120 Ω resistors should be on the CAN Data Link. A resistance of 60 Ω should be found at any point on the data link. 1. The key start switch and disconnect switch are OFF. 2. Use an electrical spoon to connect to the back of the harness connector for each ECM that has communication issues. 3. Measure the resistance across the CAN line at each connector to find the open wire. If the resistance measurement is 60 Ω, that connector does not have an open between either terminating resistor. If the resistance measurement is 120 Ω, there is an open at that connector, between one of the terminating resistors. If the resistance is greater than 5K Ω, there is an open between that connector and both terminating resistors. If there is a measurement of 40 Ω, there is an extra terminating resistor somewhere on the line. Once the section of harness containing the open is isolated, repair or replace the machine harness.	All resistance measurements are between 55 and 65 Ω	Result: The resistance measurements are correct. Proceed to "Check If The Diagnostic Code Remains", Table 24. Result: At least one resistance measurement is greater than 65 Ω. If the resistance is approximately 115 to 125 Ω. There is an open in the harness. Repair: Repair or replace the machine harness. Proceed to "Check If The Diagnostic Code Remains", Table 24. Result: At least one resistance measurement is less than 55 Ω. Repair: Look for the source of the short by disconnecting the terminating resistors and check the resistance again. If the resistance is still under 55 Ω, continue disconnecting ECMs and devices from the CAN circuit until the resistance goes up. If everything is disconnected from the CAN circuit, and the resistance still is less than 55 Ω the harness has failed. Repair or replace the machine harness. Proceed to "Check If The Diagnostic Code Remains", Table 24.

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Table 24
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. 6. Check if the diagnostic code is active.	The diagnostic code is no longer present.	Result: 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. Result: The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the ECM may require replacement. Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. Refer to the "ECM - Replace" section if the ECM needs to be replaced. STOP.

FMI 14

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Table 25
Check For Related Diagnostic Codes
Troubleshooting Test Steps	Values	Results
1. The FMI 14 diagnostic code for the Data Link is active. Look for one of the active control module diagnostic codes that is listed at the beginning of this procedure.	One of the control module diagnostic codes that is listed at the beginning of this procedure is active.	Result: One of the control module diagnostic codes that is listed at the beginning of this procedure is active. Repair: Go to the troubleshooting procedure for the active control module CID FMI diagnostic code. Perform the troubleshooting procedure for the Data Link circuit that is detailed for the control module to isolate the problem. Proceed to "Check If The Diagnostic Code Remains", Table 26.

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Table 26
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. 6. Check if the diagnostic code is active.	The diagnostic code is no longer present.	Result: 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. Result: The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the ECM may require replacement. Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. Refer to the "ECM - Replace" section if the ECM needs to be replaced. STOP.