allison transmission pto troubleshooting

. The MODE button is pressed to select a secondary or special operating condition, such as ECONOMY shift schedule. Clutch-apply pressure against the lands of the latch valves hold the latch valves in place or in a normally closed valve allows the fluid to simply flow through the valves. . The default system enables the transmission to revert to total hydraulic operation and provides safe operation during an electrical interruption by shifting to a specific pre-determined range. . Message over the SAE J1939 communication interface. . Failure to perform maintenance and reset the monitor after a calibration-defined number of warnings results in the illumination of the CHECK TRANS light. Allison, PTO internal leak "from" transmission. . According to John Hylton, application engineering, Allison Transmission, "The PTO gears are in constant mesh with the transmission gears after installation. . SCTI provides a technical HELPLINE at 519-627-1673 (Wallaceburg). . . At one end of the harness, using jumper wire kit J 39197 or J 39197-A, connect wires 111 and 174 to each other, being careful not to distort the terminals. . Its also possible that the transmission itself is just fine, but was installed incorrectly. . . . . . Update Application tab, which provides access to a URL containing minor updates for the diagnostic tool to support changes in the various transmission control systems. . . . . . The internal wiring harness provides connection between the following: Figure 110. . It is normal for the TCM date displayed electronically to be a few days prior to the date shown on the label. . . Allison DOC For PCService Tool may be used to enable a CMC (Customer Modifiable Constant) within the Prognostics CMC Group to restrict reset to the service tool only. . . . . . . . . . . . . . FM Display: An acceptable filter life status is displayed as OK in the shift selector; an unacceptable filter life status is displayed as LO. . . . Allison Transmission (AT) is responsible for warranty on these parts. . This publication is revised periodically to include improvements, new models, special tools, and procedures. . . . . . Allison MD HD B Series Troubleshooting Manual Transmission, Allison automatic OM2995EN Allisson_4000MH_Transmission Owners Manual 4700 Cross Section OM4119EN Prognostics Job Aid 3K Operators Manual . . . . . . . Repair parts for the internal wiring harness and for wiring harness components attached to the shift selector will be available through the Allison Transmission Parts Distribution Center (PDC). . Allison Transmission Troubleshooting Download ALLISON 1000/2000/24000 SERIES ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL DTC/Description P0121 Pedal Postion Sensor Performance Problem P0122 Pedal Postion Sensor Circuit Low Voltage P0123 Pedal Postion Sensor Circuit High Voltage P0218 Transmission Fluid Over Temperature P0562 System Voltage Low If an OLS is known to be present, but has not been detected, troubleshooting the OLS circuit is required. . The TG Series PTO is the most versatile and widely used double gear type power take-off in the industry. . . . K1 L. EXTERNALLY-GENERATED ELECTRONIC INTERFERENCE. The Allison 4th Generation Controls feature closed-loop clutch control to provide superior shift quality over a wide range of operating conditions. . . . . . . . . . . . . . During normal transmission operation, illumination of the LED indicator shows that a secondary or special operating condition has been selected by pressing the MODE button. . . . . . . . Table 33 lists the operating range and pre-determined default range the transmission will shift to in the event of an electrical interruption. . . . . . If a vehicle receives upgraded engine hardware or software it may become necessary to reactivate the Autoselect feature to redetect the engine current SEM status. The Allison 4th Generation Series transmission control module contains a main body assembly and solenoid valve body assembly, which are mounted to an aluminum channel plate. . . . . Allison Transmission (AT) is responsible for warranty on these parts. revision, for detailed information on the recommended cleaners. . . The Allison DOC For PCService Tool is a full-feature diagnostic software application supporting the Allison 4th Generation Control System. . This opens the PS2 and voltage is sensed on wire 118. . . Inspect all connector terminals for damage. . These TCMs will contain calibrations for the new level transmission and all previous TID levels and will automatically load the correct calibration for the transmission based on the TID signal sensed by Autodetect during the first 25 engine starts. . . . . . . . . . This simulates vehicle movements which occur during actual operation. Maximum Allowable Transmission Fluid Temperature. . . . . CONTROL MODULE (Figures 17 and 18). Locate and repair the damaged portion of the wire. . Test drive the vehicle to confirm a DTC or performance complaint. . . . . . . . . . . ELECTRONIC FLUID LEVEL CHECK (ALLISON DOC FOR PCSERVICE TOOL) . .E1, TOOL PART NUMBERS, AND REPAIR INSTRUCTIONS, F. THROTTLE POSITION SENSOR ADJUSTMENT . 1.Begin troubleshooting by determining the transmission fluid level and TCM input voltage. . . . . . . . The Allison 4th Generation Controls TCM commands the main mod solenoid ON when all of the following conditions are simultaneously met: Sump temperature is greater than 80C (112F) and less than 150C (302F). . . . . . Visually confirm that the range selected was attained. . . . . . . .ii IMPORTANT SAFETY NOTICE . . . 17 16. . 2.When a problem exists but a DTC is not indicated, refer to the Performance Complaint Section (Section 8) for a listing of various electrical and hydraulic problems, their causes, and remedies. . . . "), 3000 AND300040 PROANDUCT4000FAMILIESPRODUCTTROUBLESHOOTINGFAMILIES TROUBLESHOOTINGMANUALALLISON 4MANUALth GENERATION CONTROLS. . . The transmission may be locked in a range. . Some are stamped HT740 and some are stamped HT740D. . . 117 C. Throttle Source . . . . . . . . Shut off the engine and ignition before any harness connectors are disconnected or connected. More information on both types of shift selectors is continued below. 16. . . . . . . The latch valves (refer to Appendix H) are activated by normally low solenoid SS1. . . . . . . . . . NOTE: If using a TCM from another vehicle is unavoidable, the TCM MUST BE set to factory values and the vehicle MUST BE driven carefully to adapt the shifts to the test vehicle. . . . . Condition Likely Cause Correction . Windows Media Player is installed by default, Adobe Acrobat Reader is installed by default. . . 3.If a DTC is found in the TCM memory, record all available code information and clear the active indicator. . . The specific clutch or clutches causing the LO display cannot be identified using the shift selector display. . . Give us a call at 877-776-4600 or 407-872-1901. . . TRANSMISSION CONTROL MODULE (TCM) . . If the rating is correct for the transmission, perform the following steps. . drive gear rating (continuous operation) Using one PTO: 930 Nm. . RESTTING OF TCM PARAMETERS TO SUPPORT ENGINE UPDATE . . . . . . When the TCM detects a non-electrical problem while trying to make a shift, the TCM may try that shift a second or third time before setting a DTC. . . . . . . . . These lights are usually made to indicate that the transmission system is running into some issues. . Alberta, Canada Its an allison 2500 and it needs a pto put on it. . . . . . TESTING FOR OPENS, SHORTS BETWEEN WIRES, AND SHORTS-TO-GROUND, (Use Digital Volt/Ohmmeter J 34520-A and Jumper Wire Set J 39197 or J 39197-A). Web allison md 3060 wtec 2 has. If the complaint is confirmed. Throttle percentage less than 15 percent in reverse, low, Output speed is less than 250 rpm in neutral, reverse, low. . . . . . . . . . . . . Autodetect takes place within the first 30 seconds of each engine start monitored. . . . . . . Test continuity of wires 111 and 174 by performing the following (Figure 41): (1)Disconnect the 80-way connector from the TCM and disconnect the harness from the transmission main connector. . . . 117 B. . . . . . . . . . . . . . . . . . . . Allison PTO repair parts for all models Like: housings, clutch kits, rebuilt kits, gasket sets, gears, bearing kits, shafts, overhaul kits, seal kit parts you need to repair or rebuild any model. . . . . . . . . If it appears to functioning p[roperly, run the engine at 12001500 rpm with the transmission in N (Neutral). Refer to Section 8 for information concerning performance complaints (non-code) troubleshooting. Allison 9000 Series transmissions have up to 8 forward speeds plus a maximum of two reverse . . . . . . . Specific instructions for using many of the available or required service tools and equipment are not included in this manual. That range will be shown on the shift selector display. Two wires have frayed and are shorted together. HSD1 supplies power to PCS6 and MAIN MOD solenoids. . . . . The Transmission Rebuilders Network is the place where the industries best transmission rebuilders work together to help solve the most complex automatic transmission problems. . . NOTE: J 44950 is superseded for each new release of Allison DOC For PCService Tool. . . . . . . . . . . . . . . . . . . . . (3)Update Application tab, which provides access to a URL containing minor updates for the diagnostic tool to support changes in the various transmission control systems. NOTE: Most engine upgrades are same type/rating; under normal circumstances there should be no reason to reset the TCM Autoselect. . . . . . There is no limit to the number of engine starts for autodetection of the throttle source until a confidence flag is set for a source. . TRANSMISSION . . . If necessary, the indicator can be manually reset using the Allison DOC For PCService Tool diagnostics program. This can be discovered by using HY25-3000/US Applications Catalog. . . . . . . . . . Reviewing the Table of Contents will aid you in quickly locating information. . . . . . Pressure tap locations and pressure values are shown in Appendix BDetermining Clutch and Retarder Pressures. Even when operation is restricted, the vehicle can be operated to reach a service assistance location. . . . . . . We can rebuild or repair your Chelsea PTO or Muncie PTO off your Allison Transmission for you if you'd like. . . SCTI provides parts to any Allison customer or OEM and is responsible for warranty on these parts. . . Refer to Pages D15 and D16 for VIM wire number and terminal information. . . One end of the cable is attached to the engine fuel lever and the other, inside a protective housing, to the TPS potentiometer. . . . . . . . . . . . . . . . When SS2 is on, the valve is kept up by SS2. . . . . NOTE: Required calendar-based fluid change intervals are not monitored by this function and those intervals remain applicable to all vehicle installations in addition to the above. . Allison DOC For PCService Tool shows PS2 PRESSURIZED. . . . . . If the light does not come on during engine start, request service immediately. . . . . . . . . . . . . Also, many different styles and materials for harnesses are likely to be encountered. . . . Using the Allison DOC For PCService Tool. . . When a strip pushbutton shift selector is used, diagnostic information must be obtained by using the Allison DOC For PCService Tool, or a customer-supplied remote display. . . . . . . . . . . . . . . 1. . . . . . . . . Minimum Fluid Operating Temperatures. AUTODETECT FEATURE. . If resets are restricted to the service tool, the selector will not be able to reset the function. The service procedures recommended by Allison Transmission and described in this manual are effective methods for performing troubleshooting operations. . . The TCM (Figure 13) contains the microcomputer which is the brain of the control system. . . A list of all documents refer-enced in this document can be found at the end of this document. . . . . Remember to do the following when testing for shorts and opens: Minimize movement of wiring harnesses when looking for shorts. This occurs when the remaining fluid life is approximately 1 percent. . Display the Oil Life Monitor information and press and hold the MODE button of the Allison shift selector for 10 seconds. . . . . . . 116 A. Retarder . . . . The sensor operates on. . . . . . . 11 12. . . . The solenoid regulator valves are controlled by solenoids that control transmission clutch application. . Free 800.966.9860. . . . . . . Appendix A deals with the identification of potential circuit problems. . If your implement/pump will fit, it is PTO capable. . iii WARNINGS, CAUTIONS, AND NOTES . . Use the P/N from your appropriate parts catalog or from Appendix E in this manual. . . . . . . If yours appears to have never been replaced, your best bet is to contact the manufacturer and ask about the replacement process. . . 116 19. The trans with the PTO setup is a different factor order code. Speed sensor information is also used to control the timing of clutch apply pressures, resulting in the smoothest shifts possible. This takes you to diagnostic codes. . . . . . . . . . If yours appears to have never been replaced, your best bet is to. . . . . . . . . . TM TRANSMISSION SERVICE Condition: The SERVICE TRANS indicator illuminates, indicating the need for clutch maintenance. Clean dirty terminals or connectors with isopropyl alcohol and a cotton swab, or a good quality. . . . . Applications are diverse and include oil-. . Operation may or may not be restricted. . . When the . . . Allison Transmission could not possibly know, evaluate, or advise the service trade of all conceivable procedures by which service might be performed or of the possible hazardous consequences of each procedure. They are throwing some interesting labor quotes ranging from $600-$700 to the one place wants over $1000 labor. . . . . Use special tools when and in the manner recommended. Shut off the engine and ignition before any harness connectors are disconnected or connected. . The microcomputer is an independent controller and is referred to as a Transmission Control Module (TCM). . . For example, taping a wire that has been rubbing on a frame rail will not correct the problem unless the rubbing contact is eliminated. Thus, TID will not allow an Allison 4th Generation TCM to recognize a transmission with WTEC III controls, nor will TID allow a WTEC III ECU to recognize a transmission with Allison 4th Generation Controls. Throttle Position Sensor (Without Mounting Brackets). . . . . . . . Service Indicator Light On. . . Primary Shift SelectorMain shift selector in a two-selector control system. The vehicle interface module (VIM) provides relays, fuses, and connection points for interface with the output side of the vehicle electrical system. . . . . anyone need wiring. Most troubleshooting tests consist of determining resistance, continuity, and testing for shorts between wires and to ground. . . . . If the complaint is confirmed. . . . For example, Code P0960, indicates an open in the pressure control solenoid circuit, wires 111 and 174. a. . . . . . . . . Allison DOC For PCService Tool displays from 100 percent down to minus () 100 percent. . Allison PTO: Transmission Power Takeoff, Hydraulic Pump and Repair. . . . . . . . will cause severe overheat damage to the transmission. . . . . . . . . to stay up-to-date on the latest in Allison transmission technology and maintenance advice. . . . Be sure the transmission model matches the calibration in the TCM. . . . . Once a problem solution is discovered in the manual do not look further for other solutions. 855 844-SALE | 855 844-7253. . . . . . . THROTTLE POSITION SENSOR (Figure 15). . . . . SCTI recognizes AT, manufacturers, and SCTI part numbers. . The service procedures recommended by Allison Transmission and described in this manual are effective methods for performing troubleshooting operations. . . . . . . Three speed sensorsengine speed, turbine speed, and output speedprovide information to the TCM. . . . . . Owning Continue reading Allison Automatic Transmission Wiring . . . . The math says the air control hoist valve vs a cable control should be a lot quieter. . . . . . . . . . . Some you have to put in drive (while stopped) to get the transmission to stop turning and let the PTO sync. . . . . . . . . . . Posted January 16, 2019. . . . . . . . . . .F1 G. WELDING ON VEHICLE/VEHICLE INTERFACE MODULE . . OIL LEVEL SENSOR (OLS) INTRODUCTION . . . . BEGINNING THE TROUBLESHOOTING PROCESS. Cleaner, trapped in the connector can affect the connector seal. . . TRANSID (TID) . . . . . . The Allison 4th Generation controls system includes a main modulation solenoid. . . . If temperatures do not decrease, reduce the engine rpm. . Use the P/N from your appropriate parts catalog or from Appendix E in this manual. Then, mount the PTO to the adapter with the correct gasket which you set aside. . . A.Control System Prognostics Operation and Display. The strip pushbutton shift selector does not have a MODE button, diagnostic capability, or adjustable illumination. . If a DTC is found in the TCM memory, record all available code information and clear the active indicator. . Table 32. . . . . . enhance vehicle handling. . . . Disconnecting and reconnecting the TCM can often correct faulty wiring harness connections that may have been present. . . . . . . . Do not insert test probes larger than 0.81 mm into the TCM 80-way and transmission 20-way connectors. . . . . . . Connect with us to stay up-to-date on the latest in Allison transmission technology and maintenance advice. . . . Also, be sure to review and observe WARNINGS, CAUTIONS, and NOTES provided by the vehicle manufacturer and/or body builder before servicing the Allison transmission in that vehicle. . . If you encounter a code that is not yet in this publication, please call Allison Transmission. . . . Elkton, Maryland 21921. To shift from reverse to forward, select N (Neutral) and then D (Drive) or other forward range.
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