Linde Material Handling
Pathfi Pat hfinde nderr – Inf Inform ormati ation on Page Page
This booklet has been put together together to get a better understanding understanding of Pathfinder Diagnostic Diagnostic Software. Using a 393 service base , we have broken down each screen in an attempt attempt to clarify the Pathfinder program. program. Across the 39x range of trucks, most of the adjustments, adjustments, parameters parameters are the same. For information information regarding 391,392,394 machines , we have an additional sub section at the rear of this booklet which will cover the screens that are specific to each model. This also acts as an update section. For future releases of Pathfinder where a new screen screen has been added, added, the new screen will appear appear in the sub section so the main frame frame of the booklet does not have to be altered. In an attempt to provide as much information information as possible, values such as milli amps, voltages and calibrated calibrated values have been provided. These values have been taken from known good machines. Allthough every effort has been made to keep this as accurate as possible, we must understand that this is a guide to understanding the Pathfinder Diagnostic Program.
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Pathfinder
Linde Diagnostic System Software for All 39X Model Machines The diagnostic software will allow us to change parameters , monitor inputs and outputs and extract fault codes from the machine. This booklet will take you through each section. To understand the 39X machine, you have to know the software. It is a vital tool used in troubleshooting.
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Cables and Software Pathfinder Software Disc Cable Canbox To Truck 3903820101
Cable, Computer To Canbox3903820100 Canbox 3903605112
Engine Diagnostic Cables 3003652503 Diesel 3003652504
LP 5
Pathfinder Linde Diagnostic System Standard Settings
Linde Material Handling
Guided Diagnostic This screen is the first to be displayed when you have successfully connected to the machine using Pathfinder. On this page you can choose between Diagnosis, Calibration, Error Codes and Parameters, Inputs and Outputs and Troubleshooting.
Select offline diagnostics Select then click start button for a full description of the fault codes.
Select auto troubleshooting and click start for a quick listing of current active fault codes.
Accelerator test is where we can check the pedal group assembly for wear. Follow the instructions provided.
By selecting calibrate, we can calibrate tilt angle, accelerator pedals and joysticks. Follow the instructions provided.
Start
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Inputs and Outputs-Current Codes Traction Traction
Current Codes
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Inputs and Outputs Displays current fault codes. When you open Inputs and Outputs it will automatically go to Traction. To select Working Hydraulics, simply click once on the Working hydraulics tab. Use the explanation of codes to give you an insight as to what the fault is. If you require a full description of the fault code, click on Guided Diagnosis, click re-set and then offline diagnosis's. Then select either traction or working hydraulics. Once the codes are listed, scroll down to your code number and click once. The code description and troubleshooting guide will be displayed.
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Inputs and Outputs-Digital Inputs Traction Traction
Digita Dig itall Inp Input uts s
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Inputs and Outputs Digital Inputs allows us to monitor our inputs to the controller. For example: seat normally open (S4) is a 1. When the seat switch is closed, (S4) normally closed will switch to 1 and (S4) normally open will switch to 0. The same applies for brake 1, 2,3. With park brake applied the reading is 101, with brake released it will read 010. Use this section to check your inputs.
The numbers to the left of the input function represent the pin number on the controller, wiring schematic and harness plug.
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Inputs and Outputs-Outputs Traction Traction
Outputs
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Inputs and Outputs In the Outputs section, we can monitor the output signal from the controller. The release valve (1Y4 ) will switch from 0 to a 1 when the drive pedal is depressed. The activation of the gas cut off valve can also be monitored. Zero is off and 1 is on.
Note: gas cut off valve activation only applies to machines where the gas cut off valve is activated by the LTC controller. New 39x machines have the gas cut off valve activated by the Impco controller.
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Inputs and Outputs-Voltages Traction Traction
Voltages
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Inputs and Outputs Battery Voltage: the (120) represents the pin location on the controller and wiring schematic. Switched Battery Voltage is the voltage from the key switch. Sensor Supply Voltage 1B2 is the 5v accelerator pot voltage. :49 and :32 are the accelerator pot actual and reference voltages. As the pedal is depressed, one will rise the other will fall. They will always always equal 5v 5v + or - .5v Safety Relay is the voltage supplied internally to the relay in the LTC.
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Inputs and Outputs-Currents Traction Traction
Currents
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Inputs and outputs Release Valve (1Y4) displays milli amp reading as directional pedal is depressed.
Coil Values Old Square Solenoids 1Y4=6 ohm 1Y2=6 ohm 1Y3=6 ohm New Round Solenoids 1Y4=4.5 ohm 1Y2=6 ohm 1Y3=6 ohm
Pump Forward (1Y2) will read 0 with no pedal activated. As you select a direction fwd/rev , the milli amp reading will increase. Start of wheel rotation will be 450 milli amp going to a maximum of 1150 which equals full travel speed. Bypass Valve of Fan will always start at 1600 with a cold engine. As the engine temperature rises the milli amps will drop. As the milli amps drop the fan speed will increase. To view the full operation go to Inputs and Outputs , Traction and Temp.
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Inputs and Outputs-Valve Currents Traction Traction
Inputs and Outputs
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Valve Currents
For LP trucks only : Solenoid throttle valve ranges from 420 Ma Ma to 890 890 Ma based upon the input to the controller from the accelerator pot. With the truck idling the throttle valve will be moving slightly back and forth and the ma reading will be fluctuating , but will always be around 420 ma.
LPG Valve 12.5 ohms
The maximum ma reading for the throttle valve is determined by the position of the accelerator potentiometer and will generally be around 890 ma. The LPG cut off valve is now controlled by the Impco controller, unless you have an early version 39x machine. Either way, the ma reading is approx 690 ma.
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Inputs and Outputs-Pedal Position Sensor Traction Traction
Inputs and Outputs
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Pedal Position Sensor The pedal position sensor or accelerator potentiometer as commonly known can be viewed as values in this screen. Follow the procedures given to determine if your accelerator pot is working within its range. If final stop UPot1A is out of range, the value can be altered by adjusting the stop screws on the floor plate.
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Inputs and Outputs-Engine Data Traction Traction
Inputs and Outputs
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Engine Data Engine Data. The measured engine speed is the Linde speed sensor 1B1 located at the flywheel housing. The air gap is 0.5 +/-0.3mm and is the actual engine speed. Engine speed to ECU is the speed recorded from the VW engine speed sensor. The sensor is located by the engine oil filter housing and is listed as 0B2. The actual and Engine speed to ECU must be in range of each other. On an LP truck, you will only see the engine speed for traction being displayed. This is because there is no can connection between the LTC and Impco controller. On a diesel truck, you will read 3 rpm readings here.
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Inputs and Outputs-Temperature Traction Traction
Inputs and Outputs
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Temperature The temperature screen allows you to monitor coolant and hydraulic oil temperature. We also display the m/a reading for the fan by-pass valve. As the coolant and hydraulic oil temperature increases, the milli amps for the fan will decrease. As the milli amps decrease the fan speed will increase. Note :
1Y5 Coil Value 5 ohms
Not all fans will respond in exactly the same way. If you have a decrease in milli amps and the fan does not turn, but the truck does not over-heat, we will allow the fan to operate this way. As long as the fan does turn on and operate we do not have a problem.
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Inputs and Outputs-Current Codes Working Hydraulics Working Hydraulics
Current Codes
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Inputs and Outputs
Inputs and Outputs / Working Hydraulics current codes. The fault codes and a brief description of the code will appear here. The most current code will appear at the top and will show with operating hours.
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Inputs and Outputs-Digital Inputs Working Hydraulics Working Hydraulics
Digital Inputs
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Inputs and Outputs In digital inputs we can see the activation of various switches. 0 being inactive, 1 active and 2 not valid. Displayed are seat switch operation , limit position sensor and switches 2S4. Limit position and 2S4 are for 5 th function hydraulics. Numbers 9,64,84 and 99 indicate the location on the N1 plug connector. 26,11, and 100 are optional inputs.
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Inputs and Outputs-Outputs Working Hydraulics Working Hydraulics
Outputs
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Inputs and Outputs
In the outputs section you can view the release valve and safety relay. If the component has been activated successfully you will see the zero change to a 1. This is an output from the controller after a hydraulic function has been requested. With the machine at idle, 2Y9 and Safety Relay will = 0. When W hen a hydraulic function is requested , both will switch from a zero to 1. When the hydraulic function is no longer required, both will drop to zero. There is a delay in the Safety Relay returning to zero which is normal.
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Inputs and Outputs-Analog Values Working Hydraulics Working Hydraulics
Analog Values
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Inputs and Outputs Analog values. In this screen we can see battery voltage , the 5v supply to the joysticks and safety relay voltage once a function has been requested. Safety relay voltage will read battery voltage. Engine speed nominal and engine speed actual can also be compared. Engine speed nominal will only be seen when a hydraulic h ydraulic function has been requested.
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Inputs and Outputs-Lift + Lower Working Hydraulics Working Hydraulics
Inputs and Outputs
Linde Material Handling
Lift + Lower Lift and Lower allows the percentage values of our calibrated joysticks to be seen. The operating range is normally between 0 and 100. A 6% deviation is allowed. After 6% has been exceeded, a fault code will activate indicating a joystick failure. The solenoids for lift and tilt are proportional and operate between 0 and 1550 milli amps. NOTE. In order to achieve 1550 ma, the hydraulic speed function must be set on 100. In order to check this, go to Error Codes and Parameters, Working Hydraulics , Lift , Tilt and Aux Hydraulic speeds.
2Y1-2Y2-2Y3-2Y4 = 4.7 ohms at 20 Celsius and 7.50 ohms at 170 degree Celsius
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Inputs and Outputs-Aux Hydr 1-3 Working Hydraulics Working Hydraulics
Inputs And Outputs
Linde Material Handling
Aux Hydraulics 1-3 Auxiliary hydraulics 1-3 allows the calibrated values of the auxiliary joysticks to be seen. The operating range of the joysticks is 0-100% with with a 6% deviation allowed. If the joystick value exceeds the limit a fault code will set. The solenoids are proportional and operate between 0 and 1550 ma. NOTE. In order to achieve 1550 ma, the hydraulic speed function must be set on 100. In order to check this, go to Error Codes and Parameters, Working Hydraulics , Lift , Tilt and Aux Hydraulic speeds.
2Y5-2Y6-2Y7-2Y8 = 4.7 ohms at 20 Celsius and 7.5 ohms at 170 degree Celsius 21
Inputs and Outputs-Status Aux 3 Working Hydraulics Working Hydraulics
Inputs and Outputs
Linde Material Handling
Status Aux. 3
n functio ction 5th fun 3 is for is for 5 aux 3 Status aux Status y. only. lics onl draulics hydrau hy
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Inputs and Outputs-Cal Joystick Values Working Hydraulics Working Hydraulics
Inputs and Outputs
Linde Material Handling
Calibrated Joystick Values Calibrated joystick values are displayed here. Lift/lower 0.4 as an example is the percentage of the calibrated value to the neutral position of the joystick. All the values shown on the left fall within the 6% deviation allowed. Note. If you have problems trying to calibrate joysticks, check here to see if the calibrated values have exceeded 6%.
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Inputs and Outputs-Tilt Angle Working Hydraulics Working Hydraulics
Inputs and Outputs
Linde Material Handling
Tilt Angle
Tilt angle displays the calibrated tilt values. Front and rear end positions is the full working stroke of the tilt cylinder. The 2 white boxes on the left indicate the tilt percentage as the cylinder is being operated. ;30 is the actual and ;103 is the reference. When the values move out of range of the front and rear end positions a fault code will be set.
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Inputs and Outputs-Current Codes Display Current Codes
Display
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Inputs and Outputs
Current codes will be displayed here.
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Inputs and Outputs-Digital Inputs Display Digital Inputs
Display
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Inputs and Outputs Digital inputs – displa Digital display y is where inputs to the display can be monitored. For example, Oil pressure switch, with the key on, engine not running, a 1 is displayed. When the engine is started the 1 changes to a zero.
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Inputs Inpu ts and Outputs Outputs-- Ana Analog log Value Valuess Display Display
Inputs and Outputs
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Analog Values
Analog values shows alternator and KL15 voltage. KL15 is key switch voltage.
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Inputs Inpu ts and Output Outputss- Cur Curren rentt Codes LOC Current Codes
LOC
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Inputs and Outputs
Current codes LOC. Fault Codes for the LOC ( Linde oil control) will be displayed here. Note…not currently available in the USA.
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Inputs Inpu ts and and Outpu Outputsts- P-D P-Data ata LOC P-Data
LOC
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Inputs and Outputs
P-Data tells us our current oil level in mm and oil temperature. Note…not currently available in the USA.
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Error Codes and Parameters-System Traction System
Traction
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Error Codes and Parameters Information regarding the truck can be seen in the general / system. Note. the truck serial number will only be displayed if the truck controller is original. If the controller has been changed a series of numbers and letters will appear of no specific value.
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Error Codes and Parameters-Trouble Codes Since Last Service-Traction Trouble Codes
Traction
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Error Codes and Parameters This is where the most recent error code will be shown. On the left hand side error code 235 is shown as an example. It is important to note that code 235 is in traction, therefore the code would be T235. The T has to be placed in front of the code so we do not confuse a traction code with a hydraulic code of the same value. You also have the ability to delete error codes in this screen.
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Error Codes and Parameters-Trouble Code Memory-Traction Error Codes Parameters
Traction
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Trouble Code Memory
Trouble code memory is where all fault codes will be stored for the appropriate section. Deleting the error codes here will delete all codes for traction.
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Error Codes and Parameters-Traction Behavior-Traction Traction
Error Codes and Parameters
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Traction Behavior
Traction behavior is where we can customize the driving behavior of the machine. To slow the machine down, you alter Pump angle %. You reduce the pump angle, you reduce the truck speed. You can also lower engine rpm in conjunction with pump angle to obtain the driving behavior you are looking for. There are no set values.
Max engine speed 1600-2700 Max pump angle 24-100 Deceleration 100-120 Backward speed 20-100
Note: reduce pump angle before reducing rpm. Deceleration is set between 100 and 120. The higher the number the greater the braking force. The truck cannot be set lower than 100. Backward speed adjustment is controlling the driving speed in reverse direction.
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Error Codes and Parameters-Speed Reduction Switch-Traction Traction
Error Codes and Parameters
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Speed Reduction Switch
This screen is for an option only. Travel speed reduction should not be carried out in this screen. An error code of T226 will be displayed if these settings are altered without speed reduction being installed on the machine.
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Error Codes and Parameters-Power Increase-Traction Traction
Error Codes and Parameters
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Power Increase When the machine is used for waste paper applications, or pushing into sand/fertilizers etc the engine will cut off due to the low flywheel mass. When overrun mode (function) is set to a value 1and the engine load reaches a predetermined point , the traction is switched off in order to gain lift power. A setting of 2 will cut both traction and lift to prevent stalling.
Function = 0 or 2 Offset rpm = 0-500 Power Increase = 0 or 1
Speed offset allows you to set a higher engine speed while driving in order to give you a higher residual when driving into heaps. This setting is trial and error. Switch for power increase is an option for customers who seldom drive into heaps. This switch would be fitted on the armrest.
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Error Codes and Parameters-Light Signals Traction Traction
Error Codes and Parameters
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Light Signals Light Signals is where we set up the signals according to speed or direction. We can activate back up alarms and lights per direction. Note…Truck speed threshold must be zero to activate back up alarm. Light = 0-3 Light Signal = 0-1 Truck Speed Threshold = 0-25 Light Signal Backward = 0-1
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Error Codes and Parameters-Engine Cut Off Traction Traction
Error Codes and Paramet Parameters ers
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Engine Cut Off
Engine cut off is an optional extra. A wiring harness is required before this function can be activated. Once activated, you can programme the truck to turn itself off after the seat is left unoccupied for a period of time.
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Error Codes and Parameters-LPG Traction Traction
Error Codes and Parameters
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LPG
When you change the LTC controller on a 39x LPG machine, all controllers come set up for diesel engine. On the earlier trucks, the LPG shutoff valve was controlled by the LTC Controller. So this function had to be activated in order for the truck to run. The latest version of 39x has the LPG solenoid driven from the Impco Engine controller so this function is not required. The new controller and turn on function is used with the EController from Impco.
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Error Codes and Parameters-Door Switch Traction Traction
Error Codes and Parameters
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Door Switch
For trucks with cabs a door switch is incorporated into the latching of the door. You can activate this function in this screen.
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Error Codes and Parameters-Speed Acquisition-Traction Traction
Error Codes and Parameters
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Speed Acquisition
For the speed acquisition , the following is important. It only applies to 392/393 trucks. Up to serial number H2X393S02008 will be 135 teeth. Anything after this serial number will be 132 teeth. It is important that this is carried out so correct engine speed can be recorded. If set incorrectly the engine will still run but run poor. On a 392 machine, the serial number break is anything up to H2X392S01562 uses the 132 tooth setting.
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Error Codes and Parameters-Factory Settings-Traction Traction
Error Codes and Parameters
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Factory Settings
Factory re-set does exactly what it says. If you alter settings s ettings and need to go back to the original specs, you can select factory reset and all functions will return to standard. Note: On machines where the LP fuel solenoid is controlled by the traction controller, be sure to turn the LPG function back on. The controller will reset to a diesel as standard setting after clicking factory re-set.
Before selecting factory reset, you must ensure you record any stored values that are custo customer mer specifi specific. c. So once you have selected reset you can go back and adjust the parameters to suit the customers requirements.
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Error Codes and Parameters-Trouble codesWorking Hydraulics Trouble Codes
Working Hydraulics
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Error Codes and Parameters
Error Codes and parameters is where we can view and delete fault codes for the working hydraulics.
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Error Codes and Parameters-Trouble Code Memory-Working Hydraulics Working Hydraulics
Error Codes Parameters
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Trouble Codes Memory
Trouble codes are stored in the memory. To delete the codes simply click once on the start button. All working hydraulic codes will then be deleted.
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Error Codes and Parameters-Lift and Tilt Speed-Working Hydraulics Error Codes and Parameters
Working Hydraulics
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Lift and Tilt Speed
Lift and Tilt speed is adjusted here. It is an immediate adjustment. By setting the lift or tilt to 100 you will achieve maximum lift speed. To reduce the speed , lower the number. The settings range from 40-100. Note. when performing troubleshooting, these settings must be restored to 100 to ensure we read the correct information. Especially when reading milli amps to the valve coils.
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Error Codes and Parameters-Auxiliary Hydraulic Speed-Working Hydraulics Error Codes and Parameters
Working Hydraulics
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Aux. Hydraulics Speed
Working hydraulics speed adjustment. A new controller will have the parameters set at 50. By using the less than or greater than arrows we can either slow the hydraulic function down or increase its speed. By changing the amount of auxiliary hydraulics from a 0 to a 1 we can add additional hydraulic flow. The settings are adjustable between 0 and 100. Note. when performing troubleshooting, these settings must be restored to 100 to ensure we read the correct information. Especially when reading milli amps to the valve coils.
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Error Codes and Parameters-Auxiliary Hydraulics 2/3-Working Hydraulics Error Codes and Parameters
Working Hydraulics
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Aux. Hydraulics 2/3
For 5th function hydraulics only. Monitoring status is watching the movement of the proximity switches down at the control valve when 5th function is installed. Switch controlled 3 rd Aux Hydraulics is the activation of the 5th function.
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Error Codes and Parameters-Mast Position Working Hydraulics Error Codes and Parameters
Working Hydraulics
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Mast Position
Mast Position is an option. The switch is fitted by the joysticks on the armrest. It is a tilt memory function. Operation of this option is explained in the operators book.
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Error Codes and Parameters-Fork Height Limit-Working Hydraulics Error Codes and Parameters
Working Hydraulics
Linde Material Handling
Fork Height Limit Fork height limit is an option and does not apply to all machines.
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Error Codes and Parameters-Factory Setting-Working Hydraulics Error Codes Parameters
Working Hydraulics
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Factory Setting
In factory re-set we can re-set the original truck parameters with the re-set button. Click the start to re-set all hydraulic parameters.
Before selecting factory reset, you must ensure you record any stored values that are customer specific. So once you have selected reset you can go back and adjust the parameters to suit the customers requirements.
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Error Codes and Parameters-Trouble Code Memory-Display Trouble Coders memory
Error Codes and Parameters
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Display
Trouble code memory display. This is where we can see trouble codes that relate to display issues. We can also delete the codes in this screen.
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Error Codes and Parameters-Operating Data-Display Error Codes and Parameters
Operating Data
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Display
Operating data will be displayed displ ayed here. Any issues arising from display errors will be shown here.
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Error Codes and Parameters-Parameters Display Error Codes and Parameters
Display
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Parameters
Display parameters allows us to programme the display for the correct model of truck. Selection of the fuel gauge is explained in the paragraph of the Pathfinder software. Most 39x machines are either diesel or lpg with pressure switch. Time adjustments need to be carried out when a pm service has been carried out or when a new controller has been fitted. An example of time till next service is as follows. Operating hours is 0.4. A 50 hour service is required. Time to next service is entered as 50. This will count down, when it reaches zero, the wrench will be displayed on the display unit. Any changes made here have to be saved by pushing enter on your laptop or F5 in Pathfinder. 52
Error Codes and Parameters-UPA Input Display Error Codes and Parameters
Display
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UPA Inputs
This is an optional function to assign spare lights in the display unit a function. An example of a UPA Input would be, the installation of a seat belt. We can activate a light on the display and sound a buzzer if the seat belt is not fastened.
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Error Codes and Parameters-System LOC System
Error Codes and Parameters
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LOC
Linde Oil Control system information screen. Note. not currently available in the USA.
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Error Codes and Parameters-Trouble Codes Since Last Service-LOC Trouble Codes Since last Service
Error Codes and Parameters
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LOC
LOC trouble codes since last service. Note. not currently available in the USA.
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Error Codes and Parameters-Trouble Code Memory-LOC Error Codes and Parameters
LOC
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Trouble Codes Memory
LOC trouble code memory. Fault codes will be displayed here. Note. not currently available in the USA.
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Error Codes and Parameters-Parameter LOC Error Codes and Parameters
LOC
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Parameters
LOC Parameters. Note. not currently available in the USA.
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Additional Settings For Specific Truck Type 2002
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2005
2007
BR392 / H20-25
BR391 / H14-20
BR393 / H30-35
BR394 / H40-50
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391 Error Codes and Parameters Traction Properties 2-Traction Traction
Error Codes Parameters
Linde Material Handling
Traction Properties
Traction properties allows you to smooth out the creep control of the machine. For a smooth operation at low speed select 1. This is useful when handling delicate loads.
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391 Inp Inputs uts and Out Output puts s - Bra Brake ke Pote Po tent ntio iome mete terr - Tra Tract ctio ion n Traction
Inputs and Outputs
Linde Material Handling
Brake Potentiometer
The brake potentiometer is installed on 39x machines with coast control. These machines are normally fitted with a red brake pedal. The potentiome potentiometer ter requires values similar to the traction potentiometer and requires calibrating.
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391-3rd
Aux Hyd via Joysticks Working Hydraulics
Working Hydraulics
Inputs and Outputs
Linde Material Handling
3rd Aux. Hydraulics
For 5th function hydraulics only.
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391-- Inp 391 Inputs uts and Ou Outpu tputsts-P-D P-Dat at LOC P- Da Data ta
Inputs and Outputs
Linde Material Handling
LOC
Not available in the USA.
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392-Error Codes and Parameters Buchholz Valve-Working Hydraulics Error Codes and Parameters
Working Hydraulics
Linde Material Handling
Buchholz Valve
Early 392 machines had a Buchholz hydraulic control valve instead of the current Linde control valve. The difference between the two is clearly seen in Lindos. If you have to fit a new controller, you must determine, is it a Buchholz or Linde control valve. If it is a Buchholz you must set the value in the window to let the controller know which valve it has. The coil values are different between the two which is why we have to do this.
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392-Inputs and Outputs Brake Potentiometer-Traction Traction
Inputs and Outputs
Linde Material Handling
Brake Potentiometer
392 machines can be fitted with an ( automatic ) function which will let the truck operate like a torque converter machine. This type of truck uses a brake potentiometer which is not found on standard machines. This screen allows us to monitor the values of the brake potentiometer.
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394-Error Codes and Parameters Overrun Mode-Traction Error Codes Parameters
Traction
Linde Material Handling
Overrun Mode
When the machine is used for waste paper applications, or pushing into sand/fertilizers etc the engine will cut off due to the low flywheel mass. When overrun mode (function) is set to a value 1and the engine load reaches a predetermined point , the traction is switched off in order to gain lift power. A setting of 2 will cut both traction and lift to prevent stalling.
Function = 0 or 2 Offset rpm = 0-500 Power Increase = 0 or 1
Speed offset allows you to set a higher engine speed while driving in order to give you a higher residual when driving into heaps. This setting is trial and error. Switch for power increase is an option for customers who seldom drive into heaps. This switch would be fitted on the armrest. 65
394-Inputs and Outputs-Retarder Traction Traction
Inputs and Outputs
Linde Material Handling
Retarder
Only found on 394 H45-H50 models. The brake retarder valve is activated when over speed is detected by the controller. The retarder valve will operate between 0900m/amps and will reduce the over speed condition by dumping oil to tank.
IY1 Retarder Valve 5.2 ohm
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394-Inputs and Outputs-Currents Traction
Linde Material Handling
Release Valve (1Y4) displays milli amp reading as directional pedal is depressed. Pump Forward (1Y2) will read 0 with no pedal activated. As you select a direction fwd/rev , the milli amp reading will increase. Start of wheel rotation will be 450 milli amp going to a maximum of 1150 which equals full travel speed.
Cold Start Valve 8 ohms
Bypass Valve of Fan will always start at 1600 with a cold engine. As the engine temperature rises the milli amps will drop. As the milli amps drop the fan speed will increase. To view the full operation go to Inputs and Outputs , Traction and Temp. Cold start valve 1Y11 is activated if temperature drops below 5 degree Celsius to aid cold starting of the engine. It does this by dumping hydraulic pressure to tank during cranking. 67
394-Inputs and Outputs-State of Aux Hyd 3-Working Hydraulics Working Hydraulics
Inputs and Outputs
Linde Material Handling
State of Aux. 3 hyd.
For 5th function hydraulics only.
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Linde Material Handling
Offline Diagnostics Guided Diagnosis
Start Offline diagnostics is where we can get a full description of a fault code being shown on the display unit. It does not matter if you are in the LTC or VW engine controller, the procedure is the same. Click on offline diagnosis, then click the start button at the bottom right hand corner. See next page.
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Linde Material Handling
Offline Diagnostics Traction Once you are in this screen you can select which control is giving you the problem. For instance, if a fault code (T231) was being displayed , click on traction. Once you click traction, a list of codes will appear. By pressing the re-set button, you will be directed back to the first page of Pathfinder. T= Traction Fault Code L= Hydraulic Fault Code D= Display Fault Code LOC and LPF are not yet available in the USA.
See Next Page
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Linde Material Handling
Offline Diagnostics Fault Codes Use the scroll bar on the right hand side and locate your error code. Once you find our example of (T231) , click on the number. You will now bring up the fault code description. See next page.
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Linde Material Handling
Offline Diagnostics Fault Code T231 Fault code (T231) Traction. What does it mean? Read the code, what it is telling us is the controller has detected that the voltages supplied by the master and monitoring potentiometers has an incorrect value. The potentiometer works off 5v. In a neutral condition we should read 2.5v and 2.5v. The controller is telling us that this is not happening so it throws the fault code (T231). 49 and 32 are the controller plug connections, this is where the voltages are being read. Go to Inputs and Outputs traction, click voltages and you will see 49 and 32. Here we can verify what voltage we have at the accelerator potentiometer. The key to tracing faults on a 39x machine is reading and understanding the fault code. 72
Linde Material Handling
Pathfinder
From Linde Product Support 2008
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