Accessing Addresses and Diagnostic Trouble Codes

Procedure for dealing with diagnostic trouble codes

Every control unit monitors certain electrical circuits within the network of circuits for which it is responsible. The unit then stores the relevant diagnostic trouble code if there is a malfunction (error) or if the operator makes a mistake. However, not all of the diagnostic trouble codes indicate a current problem, since most of the circuits are monitored only after or during activation (function activated). To make sure that the diagnostic trouble code you are troubleshooting is “active”, you should proceed as follows:

• Access the diagnostic trouble codes
• Note and clear the diagnostic trouble code(s)
• Activate the circuit affected (functional check)
• Access the diagnostic trouble codes again and process them

If it is not possible to (re-)produce a relevant diagnostic trouble code by means of a functional check and the problem is still present in the circuit, deal with the codes you noted earlier.

Accessing the diagnostic trouble codes of all control units (ALL mode)
1. Accessing the ALL mode	Before entering program mode, see "General Operating Instructions and Entering Program Mode". Digital display: Move the turn signal lever up or down (to positions for left or right turn signals). Performance monitor: Press "2" key or "0" key. Display: - - - : ALL	OK: Enter the ALL mode. GO TO: 2. NOT OK: Contact dealer.
2. Entering the ALL mode	Digital display: Turn the hazard warning light switch on/off. Performance monitor: Press the “Set/Save” key. Display: 000 : ALL	OK: Check the individual control units. GO TO: 3. OK: Leave the ALL mode. GO TO: 7. OK: GO TO: Canceling or completing the program mode.
3. Checking the individual control units	Digital display: Move the turn signal lever up or down (to positions for left or right turn signals). Performance monitor: Press "2" key or "0" key. Display: The first control unit appears on the display e.g.: BCU : nonE or e.g.: BCU : CodE	OK: If display is: nonE, GO TO: 4. OK: If display is: CodE, GO TO: 5.
4. No diagnostic trouble codes are stored (nonE)	Digital display: Move the turn signal lever up or down (to positions for left or right turn signals). The next control unit appears on the display. Performance monitor: Press "2" key or "0" key. The next control unit appears on the display.	OK: Check the next control unit, GO TO: 3. OK: Leave the ALL mode. GO TO: 7. OK: GO TO: Accessing and confirming a control unit. OK: GO TO: Canceling or completing the program mode.
5. Diagnostic trouble codes are stored (CodE)	Digital display: Turn the hazard warning light switch on/off. Performance monitor: Press the “Set/Save” key. Display: The first diagnostic trouble code appears on the display. For an explanation of the diagnostic trouble codes, see "Diagnostic Trouble Codes on Basic Control Unit / Hitch Control Unit (BCU)" and the text thereafter. Digital display: Move the turn signal lever up. Performance monitor: Press "2" key. Display: The next diagnostic trouble code appears on the display. Repeat this procedure until the display reads: CLr?	OK: Clear the diagnostic trouble codes, GO TO: 6. OK: GO TO: Canceling or completing the program mode.
6. Clear the diagnostic trouble codes	Digital display: When CLr? appears on the display, switch the hazard flasher switch on/off. Performance monitor: When "CLr?" appears on the display, press the "Set/Save" key. Display: donE	OK: Check the next control unit, GO TO: 3. OK: Leave the ALL mode. GO TO: 7. OK: GO TO: Accessing and confirming a control unit. OK: GO TO: Canceling or completing the program mode.
7. Leave the ALL mode	Digital display: Pull the turn signal lever (flash-to-pass) towards the steering wheel for at least 2 seconds. Performance monitor: Press "Clear" key. Display: - - - : ALL	OK: GO TO: Accessing and confirming a control unit. OK: GO TO: Canceling or completing the program mode.

Accessing and confirming a control unit
1. Access a control unit	Before entering program mode, see "General Operating Instructions and Entering Program Mode". Digital display: Repeatedly move the turn signal lever upward (right turn signal position) until the desired control unit is displayed. Performance monitor: Keep pressing the "2" key until the desired control unit appears on the display. Display: The control units appear on the display. e.g.: - - - : BCU NOTE: The "01" after the dot that appears in the performance monitor's display indicates how many times the control unit is located on the BUS lines. Abbreviations used in display BCU (Basic Control Unit) — controls the tractor's basic functions and the hitch BIF (Basic Informator) — the instrument unit ECU (Engine Control Unit) — responsible for controlling the engine EPC (Electronic PowrQuad transmission Control Unit) — controls PowrQuad Plus and AutoQuad Plus transmissions PrF (Performance Monitor) — the performance monitor DIA (Diagnosis) — diagnostics NONE (None) — no diagnostic trouble code stored CODE (Code) — diagnostic trouble code stored InP (Input) — input CAL (Calibration) — calibration EOC (End of Calibration) — end of calibration End (End) — end of a sequence of numbers Err (Error) — error	OK: Confirm the control unit. GO TO: 2. NOT OK: Contact dealer.
2. Confirm a control unit	Digital display: Turn the hazard warning light switch on/off. Performance monitor: Press the “Set/Save” key. Display: e.g.: 000 : BCU.01	OK: Change the control unit. GO TO: 3. OK: GO TO: Accessing diagnostic trouble codes of the individual control units. OK: GO TO: Accessing addresses. OK: GO TO: Canceling or completing the program mode.
3. Changing a control unit	Digital display: Pull the turn signal lever (flash-to-pass) towards the steering wheel for at least 2 seconds. Performance monitor: Press "Clear" key. Display: e.g.: - - - : BCU	OK: Access diagnostic trouble codes. GO TO: 1.

Accessing diagnostic trouble codes of the individual control units
1. Accessing diagnostic trouble codes	Before entering program mode, see "General Operating Instructions and Entering Program Mode". Digital display: Move the turn signal lever up (right turn signal position). Performance monitor: Press "2" key. Display: The display indicates whether diagnostic trouble codes have been saved in the selected control unit. e.g.: BCU : nonE or e.g.: BCU : CodE	OK: If display is: nonE, GO TO: 2. OK: If display is: CodE, GO TO: 3.
2. No diagnostic trouble codes are stored (nonE)	Digital display: Move the turn signal lever up (right turn signal position). Performance monitor: Press "2" key.	OK: GO TO: Accessing addresses. OK: GO TO: Canceling or completing the program mode.
3. Diagnostic trouble codes are stored (CodE)	Digital display: Turn the hazard warning light switch on/off. Performance monitor: Press the “Set/Save” key. Display: The first diagnostic trouble code appears on the display. For an explanation of the diagnostic trouble codes, see "Diagnostic Trouble Codes on Basic Control Unit / Hitch Control Unit (BCU)" and the text thereafter. Digital display: Move the turn signal lever up. Performance monitor: Press "2" key. Display: The next diagnostic trouble code appears on the display. Repeat this procedure until the display reads: CLr?	OK: Clear the diagnostic trouble codes, GO TO: 4. OK: GO TO: Canceling or completing the program mode.
4. Clear the diagnostic trouble codes	Digital display: When CLr? appears on the display, switch the hazard flasher switch on/off. Performance monitor: When "CLr?" appears on the display, press the "Set/Save" key. Display: donE	OK: GO TO: Accessing addresses. OK: GO TO: Canceling or completing the program mode.

Accessing addresses
1. Selecting the desired address	Select the desired address. There are different types of addresses. Display addresses: They only show information. Input addresses: These are used to configure the control unit for the appropriate tractor model and installed accessories. If the address is an input address, "InP" appears in the display.	OK: If it is a display address, GO TO: 2. OK: If it is an input address (InP), GO TO: 3.
2. Accessing display addresses	Before entering program mode, see "General Operating Instructions and Entering Program Mode". Digital display: Move the turn signal lever up or down (to positions for left or right turn signals) until the desired address appears. Performance monitor: Press "2" key or "0" key until the desired address is displayed. Display: The address appears in the display.	OK: GO TO: Canceling or completing the program mode. OK: GO TO: Accessing addresses.
3. Accessing input addresses (InP)	Before entering program mode, see "General Operating Instructions and Entering Program Mode". Digital display: Move the turn signal lever up or down (to positions for left or right turn signals) until the desired input address appears. Performance monitor: Press "2" key or "0" key until the desired input address is displayed. Display: The input address appears in the display. InP also appears.	OK: Changing an input address (InP), GO TO: 4.
4. Changing an input address (INP)	Digital display: Turn the hazard warning light switch on/off. Performance monitor: Press the “Set/Save” key. Display: All the display positions in the input address start to flash.	OK: Select information (data in figures). GO TO: 5.
5. Selecting information (numerical value)	Digital display: Move the turn signal lever up or down (to positions for left or right turn signals) until the desired numerical data appears. Pull the turn signal lever (flash-to-pass) briefly towards the steering wheel. The next display position starts to flash. Keep repeating this procedure until all the display positions are showing the correct figures. To save this information, turn the hazard flasher switch on/off. Performance monitor: Key in the numerical data directly at the numbered keys. After every input, the display automatically jumps to the next display position. All the display positions in the input address flash during input. To save this information, press the "set/save" key. Display: The display positions on the display stop flashing.	OK: GO TO: Canceling or completing the program mode. OK: GO TO: Accessing addresses.

Canceling or completing the program mode
Canceling the program mode	NOTE: Diagnostics or input can be canceled at any time. However, if any data have been changed but not stored prior to ending input, these changes are lost. Digital display: Pull the turn signal lever (flash-to-pass) towards the steering wheel for at least 2 seconds. Performance monitor: Press "Clear" key.	OK: This input procedure is canceled. The original data still apply.
Completing the program mode	NOTE: Diagnosis or input is completed when a procedure has come to an end and the data has been stored in the memory. Digital display: (on tractors with PowrQuad Plus transmission only) Keep pulling the turn signal lever (flash-to-pass) towards the steering wheel until the display shows the normal operating mode. Performance monitor: Press "Clear" key. or Turn the main (key) switch off. NOTE: Before you switch the main (key) switch on again, wait at least 5 seconds while an exchange of data takes place between the control units.	OK: The control unit is now in its normal operating mode.