![]() High Pressure Fuel Pump - Actual and Commanded Difference (Fuel Leak) Radiator Coolant Level Low or Coolant Circuit Manifold Absolute Pressure (MAP) Sensor OORLīarometric Pressure Above Acceptable Limitīarometric Pressure Below Acceptable LimitĮngine Coolant Temperature Shows Abnormal Rate Manifold Absolute Pressure (MAP) Sensor OORH Air Temperature (IAT) Sensor Open Circuit Intake Air Temperature (IAT) Sensor OORL (Mazda LPG ECU, GM, PSI) Intake Air Temperature (IAT) Sensor OORH (Mazda LPG ECU, GM, PSI) ![]() Intake Air Temperature (IAT) Sensor OORH (PSI) If you need further assistance with repairing your machine, please contact us. If the handset displays “NO COMMUNICATION,” the controller is defective.In order to troubleshoot and diagnose the error code you get on your Hyster or Yale forklift (2005 and newer models), please look for your error code and its description in the table below. Them, connecting the handset, and testing the handset replace any nonworking partsĬause: Because this condition is similar to the last, it will take a handset to determine its cause. Solution: make sure harnesses are connected at MDI and connector B on controller test the dash display by connecting a handset to it and testing for communication test LEDs by disconnecting Solution: make sure battery is connected, the key switch is on, and the brake override circuit is in the run position also test your battery charger and motor controller and replace anyĬause: open connection between display and controller, defective display, or defective LEDs Solution: check that you have the right voltage for your truck, manually check the voltage of your battery, inspect it for any damage, and check its connecting crimps and cables for damage asĬause: B+ and/or B- missing at controller, defective battery charger, or defective battery charger Solution: charge or replace battery otherwise, use handset to determine the voltage read by the controller and compare it to an actual voltmeter reading replace controller if the two readingsĬause: incorrect battery selected, damaged battery, or damaged connection to batter Solution: check main harness for damaged connections to main contactor, brake, and electric valve coils check contactor, brake, and elecĬondition: hydraulic function not workingĬause: battery voltage is low or controller voltage calibration is incorrect Solution: move truck to a warmer or cooler location use a handset to check that controller temperature matches room temperature (if not, replace controller) Solution: check electrical connection between traction motor, field wires, and controller check traction motor armature for shorts check motor field resistance and correct if not between 0.5Īnd 1.5 ohms check contactor coil for resistance of 52 ohmsĬondition: traction functions reduced below 14☏ or above 167☏ and not working above 194☏Ĭause: controller temperature is too hot or cold controller temperature is not calibrated correctly controller sensor or controller itself is damaged Solution: check connection between electric brake and controller check brake coil for resistance in both directions and replace if not between 27.36 and 30.24 ohmsĬause: damaged connection to traction motor traction motor armature resistance is too low field wires are loose or damaged motor field winding is shorted or too low Solution: check electrical connection between valve coil and controller check lowering valve coil for resistance, replace if not approximately 17.7 ohms replace lowering valve cartridge ifĬause: damaged connection to brake or brake coil damaged Solution: disconnect power leads at contactor and test for an open circuit check connections between motor field and controllerĬause: damaged connection to lowering valve damaged lowering coil or lowering valve cartridge ![]() Solution: check connections between control card and controller use a handset to test for operation of traction reversing switch replace control card if tiller card is damagedĬondition: traction and hydraulic functions not workingĬause: main contactor tips are welded closed or motor field circuit is broken HYSTER Forklift Trucks Fault Codes DTC listĬondition: traction and hoist functions not workingĬause: incomplete connection between control card and controller traction reversing switch not connected damaged or defective tiller card ![]()
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