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SECTION 55 -- ELECTRICAL SYSTEMS -- CHAPTER 11 1

604.55.041.00 -- 01 -- 1998

SECTION 55 -- ELECTRICAL SYSTEMS

Chapter 11 -- Diagnostic ‘H’ Routines

Section Description Page55 000 Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16x16 Transmission ‘H’ Routine 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12x12 Dual Command Transmission ‘H’ Routine 19. . . . . . . . . . . . . . . . . . . . . . . . . . .Electronic Draft Control ‘H’ Routine 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INTRODUCTIONThe TS range of tractors has a built in diagnosticsystem.To gain access to the diagnostic ‘H’ menu moderoutine it is necessary to use the diagnostic testswitch, Tool No. 4FT 950, in the tractor diagnosticconnector (C125), located behind the right-handInstrument Control Panel.

1The Instrument Cluster, either EIC (A) or AEIC (B),is used to display the information.

Connect Tool No. 4FT 950 to the diagnosticconnector and turn the key start switch ON.

The display will show ‘HH’ to indicate that the ‘H’menu has been activated.

1. Transmission display2. Electronic Draft Control display

2

A1 2

3

B1 2

2 SECTION 55 -- ELECTRICAL SYSTEMS -- CHAPTER 11

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16x16 Transmission ‘H’ Routine

The ‘H’ routine consists of the following H menu codes:

HH Service Menu Page

H1 Transmission clutch spring pressure calibration 3

H2 Transmission clutch spring pressure calibration review 6

H3 (EDC valve calibration values) 6

H4 Software revision level 7

H5 Switch test 7

H6 Select rear tyre rolling radius 8

H7 Auto radius calibration (400 Foot/122m Dash) 10

H8 Non volatile memory reset (Erase Calibrations) 11

H9 Vehicle sensor operation display 12

HA Clutch pedal position display and oil temperature 14

HB View stored error codes 14

HC Clear stored error codes 15

HD View live error codes 16

HE Clutch fill time adjustment 16


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H1 Transmission Clutch SpringPressure Calibration

With the test switch connected, start the engine.Switch off air conditioning.Apply handbrake.Select H1.

4The word CAL should appear on the instrumentcluster display. This will be replaced after a fewseconds by the oil temperature, in degreesCelsius.

Set the engine speed to 1200 +/-- 100 rpm.

5C3 and C4 Calibration

Place all gear levers in the forward position.

6C3 calibration :

Press and hold the Upshift button.If the start up procedure was incorrect, a U codewill be displayed (see page 5).

7


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The display will change to show a number.This number will flash and begin to scroll up, asthe clutch is calibrated.When the processor detects a decrease inengine rpm of 50, the calibration stops. This isindicated by a fixed, non flashing number.Release the Upshift button.

8C4 calibration :

Use the downshift button to calibrate the C4clutch in the same manor as the C3 clutch.

9The display is similar to the C3 calibration.

10C1 and C2 calibration :

Depress the clutch pedal.

Place the range lever in neutral, leaving theshuttle lever and the main lever in the forwardposition.

Release the clutch pedal.

Set the engine speed to 1200 +/-- 100 rpm.

11


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Press and hold the Upshift button to calibrate theC1 clutch.Press and hold the Downshift button to calibratethe C2 clutch.The procedure is the same as that for the C3 andC4 clutches.

12

Clutch Spring Pressure Calibration Error Codes

U20 Correct start up sequence was not used -- Depress and release the clutch pedal, repeatcalibration procedure.

U21 Engine rev/min is too low (1200 rpm ¦ 100 rpm)

U22 Engine rev/min is too high (1200 rpm ¦ 100rpm)

U23 Forward/Reverse shuttle lever is not in forward.

U24 Main lever is not in 5--8 range.

U25 Field/road lever is not in gear.

U26 Clutch pedal is not fully released.

U27 C3 calibration is too low -- The initial test pressure was sufficient to lugthe engine.

U28 C3 calibration is too high -- The maximum test pressure was reachedwithout causing the engine speed to decrease50 rpm.



U31 Wheel motion detected during calibration -- Handbrake was not applied or the calibrationthreshold was too low such that initial testpressure was enough to cause slight wheelmotion prior to lugging the engine.






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H2 Transmission Clutch SpringPressure Calibration Review

Select H2 with the test switch.

13The display will automatically show the storedcalibration values for C1, C2, C3, C4 and thenreturn to the “HH” screen.

14H3 See Electronic Draft Control ’H’ Menus

15


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H4 Software Revision LevelSelect H4 with the test switch.

16The display will automatically show softwareinformation:

AF 16x16 transmission82 Software level01 Prototype software (if any)

and then return to “HH” screen.

17H5 Transmission/EDC Switch TestSelect H5 with the test switch.

18The display will then show “d0”.If a transmission or EDC switch is operated thedisplay will show a code number and an audibletone will be heard to indicate correct operation.If the code and tone do not operate, the switch orwiring could be at fault.

19


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16x16 Switch DiagnosticsCode Switch Operatedd71 Inching Pedal Switchd74 Downshift Switchd75 Upshift Switchd77 5--8 Range Switchd78 Creeper Switchd81 1--4 Range Switchd82 Low Range Switchd83 High Range Switchd85 Neutral Switchd91 Manual differential lock switch positiond92 40_C Oil Temperature Switchd93 Fuse No. 12 Sensed94 Shuttle Dump Switchd95 Right Foot brake switchd96 Left Foot brake switchd99 Auto differential lock switch

H6 Select rear tyre rolling radius

Using a diagnostic lead, select H6 in the diagnosticmenu.The current radius will be displayed (inmillimetres).On a new vehicle this will be the basic build tyreradius and will not need changing unless differentsize tyres are fitted.

20By pressing the Transmission Upshift button alarger radius may be selected and Downshiftbutton selects a smaller radius. Use the buttons toselect the value closest to the actual radius.

21

SECTION 55-- ELECTRICAL SYSTEMS -- CHAPTER 11 9

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TYRE RADIUS INDEX FOR ROAD SPEED CALCULATIONTyre SizeDesignation

RadiusIndex

8.3 -- 24 470-- 32 570-- 36 620-- 38 645-- 44 720

9.5 -- 20 445-- 24 495-- 28 545-- 36 645-- 38 670-- 44 745-- 48 795

11.2 -- 20 465-- 24 515-- 28 565-- 36 665-- 38 690

12.4 -- 20 490-- 24 540-- 28 590-- 32 640-- 36 690-- 38 720-- 46 820

13.6 -- 24 560-- 26 585-- 28 610-- 36 715-- 38 740

14.9 -- 24 590-- 24 IND 580-- 26 615-- 28 640-- 28 IND 630-- 30 665-- 38 765

15.5 -- 38 74516.9 -- 24 620

-- 24 IND 610-- 26 645-- 28 670-- 28 IND 660-- 30 695-- 34 745-- 34 IND 730-- 38 795-- 42 845

17.5L -- 24 IND 58018.4 -- 24 IND 635

-- 26 670-- 26 IND 665

Tyre SizeDesignation

RadiusIndex

18.4 -- 28 IND 685-- 30 720-- 30 IND 715-- 34 770-- 38 820-- 42 870

19.5L -- 24 IND 61020.8 -- 34 805

-- 38 855-- 42 905

21L -- 24 IND 635-- 30 720

23.1 -- 26 760-- 26 IND 750-- 30 810-- 34 860

24.5 -- 32 85528L -- 26 720

30.5L R32 8601050 / 50 R32 855800 / 60 R32 820440 / 65 R24 560

R28 610480 / 65 R24 590

R28 640540 / 65 R24 620

R26 645R28 670R30 695R34 745R38 795

600 / 65 R28 695R32 745R34 770R38 820

650 / 65 R38 855R42 905

750 / 65 R26 770800 / 65 R32 870260 / 70 R16 360

R18 390R20 415

280 / 70 R16 375R18 400

300 / 70 R16 375R18 405R20 445

320 / 70 R20 465R24 515R28 565

360 / 70 R20 490


RadiusIndex

360 / 70 R24 540R28 590

380 / 70 R20 510R24 560R28 610

400 / 70 R20 520R24 560

420 / 70 R24 590R28 640R30 665

460 / 70 R24 590480 / 70 R24 620

R26 645R28 670R30 695R34 745R38 795

500 / 70 R34 745520 / 70 R26 650

R30 720R34 770R38 820

540 / 70 R34 770580 / 70 R26 670

R38 855R42 905

600 / 70 R30 745620 / 70 R26 720

R38 855R42 905

650 / 70 R26 745R30 795

680 / 70 R32 820R34 855

710 / 70 R38 905340 / 75 R20 480380 / 75 R20 500620 / 75 R26 760

R30 810R34 860

650 / 75 R32 835R34 855

680 / 75 R32 870710 / 75 R34 905210 / 80 R16 345250 / 80 R16 385

R18 410260 / 80 R20 445

320 / 80 R18 IND 475


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Find the rolling radius of the rear tyres of the vehicleusing the table provided on the previous page or ifthe tractor is fully built and tyres at the correctpressure the radius can be measured (inmillimetres) from centre of rear axle to ground.

22The Upshift and Downshift buttons pressedtogether will toggle the groundspeed displaybetween Kph and Mph units. The default setting isMph.Once you have the radius and display unitsselected, key off and disconnect the diagnosticlead. This will store the details in Non-VolatileMemory (i.e. values will not be lost if battery isdisconnected).

23H7 Auto Radius Calibration

(400 foot / 122m dash)Mark out a 400 foot / 122 metre distance on levelground.Install the Test Switch and start the engine.Select H7 with the test switch.

24The display will change to show the current radius(in millimetres). On a new vehicle this will be thebasic build tyre radius and will not need changingunless different size tyres are fitted.

25


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With the transmission in high range (hare) and gearlever in 1--4 group.Drive the tractor towards Start Line, as the frontwheels cross the line press the Upshift button. Thedisplay will now show “Run”. Continue to the Endline and as the front wheels cross, press theDownshift button.The radius of the rear wheels will now be displayed.

Further presses of the Downshift button will togglethe groundspeed display between Kph and Mphunits. The default setting is Mph.Once you have the radius and display unitsselected, key off to store the settings.

26

H8 Non Volatile Memory ResetSelect H8 with the test switch.WARNING!H8 WILL CLEAR ALL CALIBRATION VALUESAND STORED ERROR CODES

27After selecting H8 the display will change to “EE”(Erase EPROM) automatically.The display will then return to the “HH” screen.

28


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H9 Vehicle Sensor Operation DisplaySelect H9 with the test switch.H9 allows various signals to and from solenoids,potentiometers etc. to be checked for bothtransmission and EDC systems.

29The required channel can be selected by using theup/downshift switches.NOTE: 4 seconds after selecting a channel, thechannel number will be replaced by a value for thatchannel.

30

ChannelNumber Description Typical Approximate Values

0 Clutch Pedal position 91 Released, 26 Depressed

1 Transmission Oil Temperature 75 at 40_C

2 Transmission 40_C 96 > 40_C, 2 < 40_C

3 Fuse 12 Sense 96

4 Not applicable to service 49

5 5 Volt Reference (Transmission Control) 49

6 12 Volt Vf Input (Fuse 13) 42

7 12 Volt Vd Input (Clutch Switch) 43

8 12 Volt Vh Input (Fuse 14) 43

9 8 Volt Reference (EDC Control) 79

10 Not used --

11 Not applicable to service --



14 C1 Valve Current Sense 92 Engaged, 0 Not Engaged




18 EDC Valve Raise Solenoid Current 0--73


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ChannelNumber Typical Approximate ValuesDescription

19 EDC Valve Lower Solenoid Current 0--73

20 Ground Speed Signal 64

21 Not used --

22 Not used --

23 Not used --

24 Not used --

25 Implement Status Lamp Sense 7 when illuminated

26 Wheel Slip Lamp Sense 7 when illuminated

27 Not used --

28 Lift Arm Position Sensing Potentiometer 33 Lift Lowered83 Lift Raised

29 Lift Control Lever Potentiometer 27 Fully Lowered83 Fully Raised

30 Drop Rate Control Potentiometer 84 Turned Fully Clockwise14 Turned Fully Counter Clockwise

31 Height Limit Control Potentiometer 84 Turned Fully Clockwise14 Turned Fully Counter Clockwise

32 Position/Draft Sensitivity Potentiometer 84 Turned Fully Clockwise14 Turned Fully Counter Clockwise

33 Slip Limit Control Potentiometer 84 Turned Fully Clockwise14 Turned Fully Counter Clockwise

34 Right Hand Load Sensing Pin 48 When Implement not being used

35 Left Hand Load Sensing Pin 48 When Implement not being used

NOTE: To observe the values for channels 14, 15, 16 and 17 the engine needs to be running and the appropriategear selected.

The values quoted are approximate typical values and these may vay slightly from tractor to tractor. Allow upto 10% on the figures quoted.

Explanations:

Vf Input: This is the input voltage into the microprocessor to transmission components not directly affectedby the clutch pedal switch, i.e. PWM solenoids C1 and C2 and the Creeper solenoid.

Vd Input: This is the input voltage into the microprocessor to transmission components which are affected bythe clutch pedal switch, i.e. PWM solenoids C3 and C4.

Vh Input: This is the input voltage into the microprocessor for EDC components, i.e. Raise and Lowersolenoids.


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HA Clutch Pedal Position Displayand Oil Temperature

Select HA with the test switch.

31The position of the clutch pedal can then bemonitored.Use this mode to correctly set up the clutch pedalswitch. The switch should operate between 8(down click) and 14 (upwards click).

32HB View Stored Error CodesSelect HB with the test switch.

33The most recent error code will be displayed.

Up to 30 error codes can be stored. This displaymode sorts the error codes so that the errors whichoccurred most recently are displayed first.

34


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To view the hours of the last occurence depressand hold the upshift button.Continue to hold the upshift button and after 2seconds of displaying the hours, the screen will goblank then the number of occurences will bedisplayed.

35To select the next stored error code press thedownshift.NOTE: Ongoing error conditions will be countedeach time the key switch is turned on. Forexample, E51 (temperature sensor open circuit)could show a large number of occurrences simplybecause the circuit has been open for months, andthe error was detected each time the tractor wasstarted.

To return to the ’top’ of the list depress both up anddownshift buttons together.

36When there are no more error codes to select thedisplay will show three dashes.

37HC Clear Stored Error CodesThis mode functions like ’H8’ but only clears storederror codes. Calibration values are not affected.

Select HC with the test switch.The dispaly will go blank, show ’EE’ go blank againand then return to ’HH’.

38


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HD View Live Error CodesSelect HD with the test switch.After a few seconds the display will revert to normaloperating mode.This mode allows normal tractor operation, but anydetected errors will cause an error code to bedisplayed, whether they are disabling or not.Key off, then on, to reset system to normaloperation, i.e. only disabling error codesdisplaying.

39HE Clutch Fill Time Adjustment

Set up procedure:

S Warm the oil to normal operating temperature,at least 60!C.

S Park the tractor on a level surface. Allow somespace as the tractor will move when testingclutches 3 and 4.

S with a diagnostic tool installed start the engineand set engine speed to 1200 +/-- 100 rpm.

40Entering the calibration mode :

Place the 4--5 (main) and range levers in neutral,place the shuttle lever in forward and release theclutch pedal.

Using diagnostic tool 4FT950 select mode HE.

If the oil temperature is less than 60!C ’F1’ willbe displayed, alternating with the display of oiltemperature. This will NOT stop until the oilreaches 60!C.

41CLUTCH SELECTION:While the 4--5 lever is in neutral, the display willindicate which clutch is selected.

To select C1 or C2 the range lever must be inneutral.To select C3 or C4 the range lever must be in thehigh range

To switch between C1 and C2 or C3 and C4,press the upshift or downshift switch while the4--5 lever is in neutral.

42


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ADJUST AND TEST C1 OR C2Shift the 4--5 lever into 5 (forward).This display will show C1 or C2 and to the left ofthis a sequence of horizontal lines will appear toindicate a ramping up of pressure on the C3 andC4 clutches to prevent output rotation of the C1and C2 clutches.

43The display will then change to a single digitnumber which is indicating the quickfill time in 10millisecond units.This can be adjusted using the upshift anddownshift switches.

44To test the quickfill setting, press and release thedump switch. The display will show ’Fill’ and thenreturn to the quickfill setting.Listen to the clutch engagement ’Slap’.Increase the value to a point where a ’slap’ is justaudible and then reduce the value by 2.

45ADJUST AND TEST C3 OR C4

Ensure that the handbrake is OFF.

Shift the range lever into the high range.

Shift the 4--5 lever into 5 (forward) and releasethe clutch pedal.

46


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This display will show C3 or C4 and to the left ofthis a sequence of horizontal lines will appear toindicate a ramping up of pressure on C1 clutch toconnect C3 and C4 to the engine.

47The display will then change to a single digitnumber which is indicating the quickfill time in 10millisecond units.This can be adjusted using theupshift and downshift switches.

48To test the quickfill setting, press and release thedump switch. The display will show ’Fill’ and thenbriefly to the clutch selected then the quickfillsetting.As the dump switch is released the tractor shouldbe felt to ’rock’ as the clutch fills.

49Adjust the fill time until the rock is barely noticeable,then reduce the value by 2.

50


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24x24 Dual Command Transmission ‘H’ Routine

The ‘H’ routine consists of the following H menu codes:


H1 Not used for 24x24 transmission 20

H2 Transmission clutch spring pressure calibration review 20

H3 (EDC valve calibration values) 21

H4 Software revision level 21

H5 Switch test 22

H6 Select rear tyre rolling radius 23

H7 Auto radius calibration (400 Foot / 122m Dash) 25

H8 Non volatile memory reset (Erase Calibrations) 26

H9 Vehicle sensor operation display 27

HA Clutch pedal position view and oil temperature 29

HB View stored error codes 29

HC Clear stored error codes 30

HD View live error codes 31

HE Clutch fill time adjustment 31

HF Transmission clutch spring pressure calibration 33


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H1 Not used

51H2 Transmission Clutch Calibration

Value ReviewSelect H2 with the test switch.

52The display will change to show first the Lo clutchstored calibration value and then the Hi clutchvalue.

NOTE: The appropriate light, hare or tortoise willalso illuminate.

53The display automatically returns to HH.

54


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H3 See “Electronic Draft Control” ’H’ Menus

55H4 Software Revision LevelSelect H4 with the test switch.

56The display will automatically display:

AE 24x24 dual command transmission82 Software level01 Prototype software (if any)


57


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H5 Transmission/EDC Switch TestSelect H5 with the test switch.

58The display will then show “d0”.

59If a transmission or EDC switch is operated a codenumber will be displayed along with an audible toneto indicate correct operation.If the code number and tone do not operate, theswitch or wiring could be at fault.

60

Switch Code Switch Description

d71d74d75d81d82d85d91d92d93d94d95d96d99

Clutch Pedal SwitchDual Power Downshift SwitchDual Power Upshift SwitchHigh/medium in Gear SwitchMain in Gear Switch -- 1/2 and 3/4 Gear SwitchesNeutral Start SwitchShuttle Dump SwitchHydraulic Oil Temperature SwitchFuse No. 12 SenseManual Differential SwitchRight Foot Brake SwitchLeft Foot Brake SwitchAuto differential Lock Switch


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H6 Select Rear Tyre Rolling Radius

Using a diagnostic lead, select H6 in the diagnosticmenu.The current radius will be displayed (inmillimetres).On a new vehicle this will be the basic build tyreradius and will not need changing unless differentsize tyres are fitted.

61By pressing the Transmission Upshift button alarger radius may be selected and Downshiftbutton selects a smaller radius. Use the buttons toselect the value closest to the actual radius.

62Find the rolling radius of the rear tyres of the vehicleusing the table provided on the following page or ifthe tractor is fully built and tyres at the correctpressure the radius can be measured (inmillimetres) from centre of rear axle to ground.

63


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TYRE RADIUS INDEX FOR ROAD SPEED CALCULATIONTyre SizeDesignation

RadiusIndex

8.3 -- 24 470-- 32 570-- 36 620-- 38 645-- 44 720

9.5 -- 20 445-- 24 495-- 28 545-- 36 645-- 38 670-- 44 745-- 48 795

11.2 -- 20 465-- 24 515-- 28 565-- 36 665-- 38 690

12.4 -- 20 490-- 24 540-- 28 590-- 32 640-- 36 690-- 38 720-- 46 820

13.6 -- 24 560-- 26 585-- 28 610-- 36 715-- 38 740

14.9 -- 24 590-- 24 IND 580-- 26 615-- 28 640-- 28 IND 630-- 30 665-- 38 765

15.5 -- 38 74516.9 -- 24 620

-- 24 IND 610-- 26 645-- 28 670-- 28 IND 660-- 30 695-- 34 745-- 34 IND 730-- 38 795-- 42 845

17.5L -- 24 IND 58018.4 -- 24 IND 635

-- 26 670-- 26 IND 665


RadiusIndex

18.4 -- 28 IND 685-- 30 720-- 30 IND 715-- 34 770-- 38 820-- 42 870

19.5L -- 24 IND 61020.8 -- 34 805

-- 38 855-- 42 905

21L -- 24 IND 635-- 30 720

23.1 -- 26 760-- 26 IND 750-- 30 810-- 34 860

24.5 -- 32 85528L -- 26 720

30.5L R32 8601050 / 50 R32 855800 / 60 R32 820440 / 65 R24 560

R28 610480 / 65 R24 590

R28 640540 / 65 R24 620

R26 645R28 670R30 695R34 745R38 795

600 / 65 R28 695R32 745R34 770R38 820

650 / 65 R38 855R42 905

750 / 65 R26 770800 / 65 R32 870260 / 70 R16 360

R18 390R20 415

280 / 70 R16 375R18 400

300 / 70 R16 375R18 405R20 445

320 / 70 R20 465R24 515R28 565

360 / 70 R20 490


RadiusIndex

360 / 70 R24 540R28 590

380 / 70 R20 510R24 560R28 610

400 / 70 R20 520R24 560

420 / 70 R24 590R28 640R30 665

460 / 70 R24 590480 / 70 R24 620

R26 645R28 670R30 695R34 745R38 795

500 / 70 R34 745520 / 70 R26 650

R30 720R34 770R38 820

540 / 70 R34 770580 / 70 R26 670

R38 855R42 905

600 / 70 R30 745620 / 70 R26 720

R38 855R42 905

650 / 70 R26 745R30 795

680 / 70 R32 820R34 855

710 / 70 R38 905340 / 75 R20 480380 / 75 R20 500620 / 75 R26 760

R30 810R34 860

650 / 75 R32 835R34 855

680 / 75 R32 870710 / 75 R34 905210 / 80 R16 345250 / 80 R16 385

R18 410260 / 80 R20 445

320 / 80 R18 IND 475


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The Upshift and Downshift buttons pressedtogether will toggle the groundspeed displaybetween Kph and Mph units. The default setting isMph.Once you have the radius and display unitsselected, key off and disconnect the diagnosticlead. This will store the details in Non-VolatileMemory (i.e. values will not be lost if battery isdisconnected).

64

H7 Auto Radius Calibration(400 foot / 122m dash)

Mark out a 400 foot / 122 metre distance on levelground.Install the Test Switch and start the engine.Select H7 with the test switch.

65The display will change to show the current radius(in millimetres). On a new vehicle this will be thebasic build tyre radius and will not need changingunless different size tyres are fitted.

66


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With the transmission in high range and main shiftlever in gear 2.Drive the tractor towards Start Line, as the frontwheels cross the line press the Upshift button. Thedisplay will now show “Run”. Continue to the Endline and as the front wheels cross, press theDownshift button.The radius of the rear wheels will now be displayed.

Further presses of the Downshift button will togglethe groundspeed display between Kph and Mphunits. The default setting is Mph.Once you have the radius and display unitsselected, key off to store the settings.

67



69


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H9 Vehicle Sensor Operation DisplaySelect H9 with the test switch.H9 allows various signals to and from solenoids,potentiometers etc. to be checked for bothtransmission and EDC systems.


71


0 Clutch Pedal position 91 Released, 26 Depressed

1 Transmission Oil Temperature 75 at 40_C

2 40_C Hydraulic Oil Switch 96 > 40_C, 2 < 40_C

3 Fuse 12 Sense 96



6 12 Volt Vf Input (Fuse 13) 42

7 12 Volt Vd Input (Clutch Switch) 43



10 Not used --




14 Not used --

15 Dump Solenoid Current Sense 0 Clutch engaged, out of gear97 Clutch engaged, in gear

16 C1 Clutch Solenoid Current Sense 0 Clutch engaged, out of gear82 Clutch pedal released in underdrive


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ChannelNumber Typical Approximate ValuesDescription

17 C2 Clutch Solenoid Current Sense 0 Clutch engaged, out of gear82 Clutch pedal released in direct drive




21 Not used --

22 Not used --

23 Not used --

24 Not used --



27 Not used --









NOTE: To observe the values for channels 15, 16 and 17 the engine needs to be running and the appropriategear selected.


Explanations:

Vf Input: This is the input voltage into the microprocessor to transmission components not directly affectedby the clutch pedal switch, i.e. Dump solenoid, Diff lock solenoid and four wheel drive solenoid

Vd Input: This is the input voltage into the microprocessor to transmission components which are affected bythe clutch pedal switch, i.e. PWM solenoids C1 and C2.



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HA Clutch Pedal Position Displayand Oil Temperature

Select HA with the test switch.

72The position of the clutch pedal can then bemonitored.Use this mode to correctly set up the clutch pedalswitch. The switch should operate between 8(down click) and 14 (upwards click).

73HB View Stored Error CodesSelect HB with the test switch.

74

The most recent error code will be displayed.

Up to 30 error codes can be stored. This displaymode sorts the error codes so that the errors whichoccurred most recently are displayed first.

75


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To view the hours of the last occurence depressand hold the upshift button.Continue to hold the upshift button and after 2seconds of displaying the hours, the screen will goblank then the number of occurences will bedisplayed.

76To select the next stored error code press thedownshift.NOTE: Ongoing error conditions will be countedeach time the key switch is turned on. Forexample, E51 (temperature sensor open circuit)could show a large number of occurrences simplybecause the circuit has been open for months, andthe error was detected each time the tractor wasstarted.

To return to the ’top’ of the list depress both up anddownshift buttons together.

77When there are no more error codes to select thedisplay will show three dashes.

78HC Clear Stored Error CodesThis mode functions like ’H8’ but only clears storederror codes. Calibration values are not affected.

Select HC with the test switch.The dispaly will go blank, show ’EE’ go blank againand then return to ’HH’.

79


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HD View Live Error CodesSelect HD with the test switch.After a few seconds the display will revert to normaloperating mode.This mode allows normal tractor operation, but anydetected errors will cause an error code to bedisplayed, whether they are disabling or not.Key off, then on, to reset system to normaloperation, i.e. only disabling error codesdisplaying.

80HE Clutch Quick Fill Adjustment

Warm the oil to normal operating temperature, atleast 60 degrees Celsius.

Park the tractor on a level surface. Allow somespace, as the tractor will move during testing.

With the diagnostic switch installed, start theengine and set the engine speed to 1200 rpm.Select diagnostic mode HE.

81


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If the oil temperature is less than 60 degreesCelsius, ”F1” will be displayed, Alternating withdisplay of oil temperature. This display WILL NOTGO AWAY unless the oil temperature reaches 60degrees.

82CLUTCH SELECTION:While the 1--4 lever is in neutral, press thedownshift switch to select the Lo clutch or press theupshift switch to select the Hi clutch. The selectedclutch will be indicated at all times by an L or an Hin the left digit of the transmission LCD display. Thenumber to the right of the L or H indicates thequickfill duration for the selected clutch.

83ADJUST AND TEST CLUTCHESShift the main shift lever into gear (no need to usethe clutch pedal, the clutches are all dumped), thenuse the shuttle dump button or the clutch pedal,shift the shuttle lever into gear, Release the handbrake and SLOWLY release the clutch pedal untilthe tractor “moves” (approx 20 % of pedal travel).Observe whether the tractor nudges at thebeginning of clutch engagement. If there is nonudge, the quickfill duration should be increaseduntil there is a slight nudge.If the nudge is more of a jerk, the quick fill durationshould be decreased.The factory setting is 3. 84

To adjust the quickfill duration, depress the clutchpedal or shift the shuttle lever to neutral (but leavethe main shift lever in gear), then use the upshiftand downshift switches to increase or decrease thenumber on the display.

85


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HF Clutch Spring Pressure Calibration

Connect diagnostic test switch 4FT950.

86Start the engine.Select mode HF, using the test switch.

87”CAL” will be displayed for a few seconds, thenthe display will be controlled by clutch pedalposition as follows:Pedal down (below 10%) -- Calibration value forthe selected clutch is displayed.Pedal up (above 98%) -- Oil temperature isdisplayed.Pedal between 10% and 98% -- Pedal position isdisplayed.

88Set engine speed to 1200 +/-- 100 rpm.

89


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1. To select the clutch to be calibrated, shift themain (1--4) lever to neutral and press theupshift switch to select the high clutch, or pressthe downshift switch to select the low clutch.The selected clutch is indicated by the tortoiseand hare lamps.

902. Depress the clutch pedal, select a gear and

range, and slowly release the pedal to checkthe engagement point.

Note 1: Releasing the pedal beyond 35% will notfurther increase the clutch pressure.

Note 2: If the pedal is released above 90%, theclutch pressure will dump after a few seconds.Fully depress the pedal to restore operation.

Note 3: If the calibration value has previously beenset too high, the clutch may engage and move thetractor, particularly if a low gear has been selectedand the brake is not firmly engaged. If calibrationis required because a PWM valve has beenreplaced, the calibration number should bereduced to 110 or less before releasing the clutchpedal, as the old calibration value may be much toohigh.

91

3. Use the upshift switch to increase thecalibration value or use the downshift switch todecrease the calibration value as required tomove the clutch engagement point to 35%pedal travel. The value can be adjusted evenwhen it is not being displayed.

4. After calibrating both clutches, turn off the keyswitch for at least 1 second to store thecalibration values.

92


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Electronic Draft Control (EDC) -- ‘H’ Routines

The EDC ‘H’ routine consists of the following H menu codes:


H1 EDC Calibration Procedure 35

H2 EDC Disable 36

H3 EDC Valve Calibration review 37

H4 Software review (as transmission) 38

H5 Switch Test 39

H8 Non volatile memory reset 40

H9 Voltmeter (as transmission) 40

H1 EDC Calibration ProcedureDisconnect the Automatic Pick Up Hitch (APUH)rods.Lower linkage using control lever & connect tosuitable weights (approx 200Kg) capable ofovercoming any binding within the system.Install the diagnostic switch, Tool No.4FT.950 orstart the engine with the raise/work/lower switchdepressed to enter the calibration mode, H1.

93

The instrument cluster EDC display will show’CAL’.Set the engine speed to 1200 +/-- 100 rpm

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Set all EDC panel potentiometers fully clockwise

95Move the lift lever to the fully lowered position.

Pull the lever to the top of its travel and allow armsto fully raise. Check that the display increases to99.Reconnect and adjust the APUH rods. Adjust thelength of the rods so that when the lift is fully raisedusing the external fender switches the lift rods areslightly loose. Check that the APUH operatescorrectly

96Lower the control lever to 70% to 90% to start valvecalibration sequence. During calibration thelinkage is automatically raised & lowered a smallamount 3 times, which takes 2--3 minutes. Eachraise & lower is accompanied by a count on thedisplay 0--1--2. When display indicates ”end” thecalibration is complete.

Key off to store calibration values

97H2 EDC DisableTo prevent false EDC error codes on tractors notfitted with EDC it is possible to disable the testwhich looks for sensors fitted. This can be used toovercome concerns where water and corrosionaffects unused connectors.Select H2 with the test switch

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EDC Disable:Wait until H2 is cleared from the display, as thetransmission clutch pressure values are beingdisplayed, press the main shift lever upshift anddownshift switches together. The EDC displayshould now be disabled.Key off and remove test switch.

99EDC Re--enable:WARNING!H8 WILL CLEAR ALL CALIBRATION VALUESAND STORED ERROR CODES

Enter H8 diagnostic mode using diagnostic lead.Once EE has flashed twice to indicate clearing ofcalibration values key off.Re--calibrate transmission clutches and EDC aspreviously described in this section.The processor will now have EDC enabled.

100H3 EDC Valve Calibration ReviewSelect H3 with the test switch.

101The display will show the solenoid calibrationvalues (milliamps) for raise first and then lower.NOTE: The default value is 50, other valuesindicate that a calibration has been performed.

102


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After a few seconds the display will show an ’r’followed by a number between 0 and 3.This indicates the number of assist rams fitted.This can be adjusted by toggling the raise/workswitch between the work and raise positions untilthe correct figure for the tractor build is shown.This is important to ensure correct operation of theEDC system.

103H4 Software Revision LevelSelect H4 with the test switch.

104The display will automatically display:

AE 24x24 dual command transmission82 Software level01 Prototype software (if any)


105


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H5 Transmission/EDC Switch TestSelect H5 with the test switch.

106The display will then show “d0”.

107If a transmission or EDC switch is operated a codenumber will be displayed along with an audible toneto indicate correct operation.If the code number and tone do not operate, theswitch or wiring could be at fault.

108

Switch Code Switch Description

d1d2d3d4d5

External Fender switch -- LowerExternal Fender switch -- RaiseRaise/work/Lower internal switch -- RaiseRaise/work/Lower internal switch -- WorkRaise/work/Lower internal switch -- Lower


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110H9 Vehicle Sensor Operation DisplaySelect H9 with the test switch.H9 allows various signals to and from solenoids,potentiometers etc. to be checked for bothtransmission and EDC systems.


112


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2 40_C Hydraulic Oil Switch 96 > 40_C, 2 < 40_C

3 Fuse 12 Sense 96





10 Not used --




14 Not used --




21 Not used --

22 Not used --

23 Not used --

24 Not used --



27 Not used --










Explanations:

Vf Input: This is the input voltage into the microprocessor to transmission components not directly affectedby the clutch pedal switch.

Vd Input: This is the input voltage into the microprocessor to transmission components which are affected bythe clutch pedal switch.


section 55 -- electrical systems chapter 11 -- diagnostic ...€¦ · 8 section 55 -- electrical...

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