. . . . . . . . The SCTI addresses and phone numbers for parts outlets are: SCTI is the source for external harness repair parts. . . When disconnecting a harness connector, be sure the pulling force is applied to the connector itself and. . . This can be discovered by using HY25-3000/US Applications Catalog. . . If dirty or corroded terminals are the probable cause of the problems, reconnect the clean connectors and operate the vehicle normally. . . . 57 A. . . . . . . . . . . . . . . . . . . . The SERVICE TRANS indicator illuminates briefly following a reset to acknowledge the reset was successful. . . The Allison 4th Generation controls system includes a main modulation solenoid. . . . . . . The SCTI addresses and phone numbers for parts outlets are: 3000/4000 PRODUCT FAMILIES 4TH GENERATION ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL. . To service Allison 4th Generation Controls, the technician must understand basic electrical concepts. . . . . . . Use the P/N from your appropriate parts catalog or from Appendix E in this manual. . . . . . . . . . . . . CODE READING AND CODE CLEARING. . . . . . All shift selectors except the strip-type pushbutton have a dual digit vacuum fluorescent (VF) display and a mode indicator (LED). . . Allison DOC For PCService Tool V7.x.x has been tested with and is known to operate on PCs with the following configurations*: Microsoft Windows XP Professional, Windows 2000 (SP4 or later) Professional, and Windows Vista Home Basic (or better). . . . . . . . All you need is your PTO series number to get started. . . . 888 9-4-GEARS | 888 944-3277. . . . . 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 Controls feature closed-loop clutch control to provide superior shift quality over a wide range of operating conditions. When SS2 is on, the valve is kept up by SS2. 3.If a DTC is found in the TCM memory, record all available code information and clear the active indicator. Once a confidence flag is set, that source is used as the source for the throttle signal. . . . The solenoids produce an output pressure that is proportional to current from the TCM. . . . . Examples are wheelchair lift not stored and service brakes not applied (service brake interlock present). . . . 20 GB Hard Drive (40 GB or greater recommended), 600 MB free hard drive space required to install the program (after software installation, the operating system requires sufficient free hard disk dpace to run the program), 1 GHz (or greater) 32-bit (x86) or 64-bit (x64) processor, 512 MB of RAM system memory (1 GB recommended), One available USB portUSB 1.1 (USB 2.0 recommended), Full administrative privileges are required to install, update, and run Allison DOC For PCService Tool. . . . March 2012. . Find an Allison authorized service facility near you. Source: www . . . . . . . . . . . . . . Disconnecting and reconnecting the TCM can often correct faulty wiring harness connections that may have been present. . . Allison DOC (Diagnostic Optimized Connection) For PCService Tool is a PC-based diagnostic tool for use with 3000 and 4000 Product Families transmissions. Also, be aware of other interlocks that would prevent attaining D (Drive) or R (Reverse). . . . . . . . Buy Now. . . . . . . . . . . . . . . . . . . If the rating is correct for the transmission, perform the following steps. . . . Input power, ground, neutral start circuitry, etc., can cause problems with electronic controls or vehicle functioning and may not generate a DTC. . . . . . . . . . Inspect all connector terminals for damage. Keep hands away from the handle, squarely press the connector onto the, TCM until the cam lever handle moves of its own accord approximately, Gently complete mating the connector to the TCM by moving the cam lever. The selector lever can be moved freely between D and the numbered forward ranges without pressing the hold override button. . . See Figure 1. . . . . . . . Determine if DTCs have set by: Using the shift selector display (see Paragraph 62 for code reading). . . . . . . Main mod may be commanded ON in neutral at any throttle position. . . . NOTE: For the latest requirements, please refer to www.allisontransmission.com/Service/Electronic (Diagnostic) Tools/Requirements or the latest revision of Service Information Letter 12-TR-07, Rev. . . . . . . . . . . Use special tools when and in the manner recommended. . . . . . . Engine speed less than 1200 rpm in all ranges except neutral. . Take advantage of our extensive warranty coverage to have your transmissions fixed or replaced with new models. . . . Use the Allison DOC For PC Service Tool and the code display procedure described in Section 6. . 116 19. . . The system that enables the transmission to default to totally hydraulic operation has been incorporated to minimize the impact of an electrical interruption. "), 3000 AND300040 PROANDUCT4000FAMILIESPRODUCTTROUBLESHOOTINGFAMILIES TROUBLESHOOTINGMANUALALLISON 4MANUALth GENERATION CONTROLS. . INPUT FUNCTIONS . . . . . . Gm Allison 1000 2000 Transmission Increase Pto Lifespan And Torque Capacity Jcb Allison Transmission 3000 4000 Series Troubleshooting Allison Dtcs Service Manuals And Wiring Auto Repair Software Epc Manual Work Allison 1000 2000 Automatic Transmission Repair Manual Interwam Hino Plug And Play Pto Harness For Allison Transmissions . . . . . Enter your email address and check your inbox. . . . . . Circuit has continuity. . .F1 G. WELDING ON VEHICLE/VEHICLE INTERFACE MODULE . TCM Reprogramming tab, used to enable the reprogramming capability of the Allison DOC For. . . . . . 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. . . . Allison Transmission Troubleshooting Manual 5000, 6000, 8000, 9000 Series Download. . . TM History: Use the Allison DOC For PCService Tool to display the amount of transmission operation from the initial service indication until the service reset. . . . When the main filter gets excessively restricted by debris, lockup pressure drops. Allison DOC For PCService Tool displays from 100 percent down to minus () 100 percent. NOTE: All external harnesses are OEM supplied. . . . The Allison transmission 1000 model has a feature called "limp mode", in which the transmission locks itself into third gear. . . Dont let a transmission in need of repairs bring your workplace to a halt! . . . . . The indicator is lit upon each initialization of the TCM, and remains on for approximately 1 2 minutes after the first selection of a drive range, until service is performed and the indicator is reset. . . . . . . . . . R1. External Wiring Harness. 5.If all connectors are clean and connected correctly, determine which wires in the chassis harness are indicated by the DTC. . . . Three speed sensorsengine speed, turbine speed, and output speedprovide information to the TCM. 4.Test drive the vehicle to confirm a DTC or performance complaint. . This, is usually caused by a dragging C1 or C3 clutch or a failed turbine speed sensor. . . 888 9-4-GEARS | 888 944-3277 . . Description of the electronic control system components. Short Between Wires and to Ground. . Shorts involve wire-to-wire or wire-to-ground contacts and moving the harnesses may eliminate the problem. . . . . . . . . . . . . Allison Wtec Iii Electrical Circuit Diagram Pdf Allison Transmission 3000 4000 Troubleshooting Manual Allison Transmission 3000 Vocational Models 3000hs 3000rds 3000evs 3000mh 3000pts 3000trv 3200sp 3200trv 3500rds 3500evs 3500sp Increase Pto Lifespan And Torque Capacity Hino Plug And Play Pto Harness For Allison Transmissions . . . . . . . . . . . . . PTO Neutral Lockup. . Allison DOC For PCService Tool displays clutch condition as OK or NOT OK for each clutch, C1 through C5. . . . . . . . . . . . . . . Look in your telephone directory under the heading of Transmissions Truck, Tractor, etc. . . . . Drive the vehicle; confirm DTCs have not returned. . . . . . . . . . . Furthermore, TID only works when the controller and transmission have the same generation controls. . . Wiring Diagram: Standard "H" Shift Option Model Years Standard.Muncie Power Products is a leading manufacturer of power take-offs (PTO), hydraulic components such as pumps, motors, cylinders, valves and reservoirs, and snow & ice removal products. The TCM senses the transmission configuration using TID wire 176. Posted - 07/31/2008 : 09:53:50 AM . . . . . . . TCM DIAGNOSTIC PROCEDURE . . . . . Whenever a transmission is overhauled, exchanged, or has undergone internal repairs, the TCM MUST. . SCTI will have parts catalogs available. . . . Suprman said: I have a few Allison transmissions. 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. . 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). . . . . . . The Throttle Position Sensor (TPS) can be mounted to the engine, chassis, or transmission. . . The electronic control of the transmission is performed by a microcomputer. . . Locate the appropriate troubleshooting chart and follow the instructions. . . . If an OLS is known to be present, but has not been detected, troubleshooting the OLS circuit is required. 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. Autodetect searches for the presence of pressure control solenoid 5 (PCS5) to the retarder during the first 35 engine ignition cycles. . . . . . . . . . . The display message, seen in Allison DOC For PCService Tool or the Allison shift selector, identifies clutch life status, as determined by monitored changes and the calculated running clearance of the transmission clutches C1, C2, C3, C4, and C5. . The strip pushbutton shift selector does not have a MODE button, diagnostic capability, or adjustable illumination. . . 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. . . *NOTE: The first number displayed in the digital display is the highest forward range available and second number is range attained in selected position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multiple sources can be detected on a single engine start cycle. . . The PTO is optional on the 10-speed "Allison . . . Wire, terminal, and connector repair information. . . . 11 12. . . . The service procedures recommended by Allison Transmission and described in this manual are effective methods for performing troubleshooting operations. . . If resets are restricted to the service tool, the selector will not be able to reset the function. . . Reset is accomplished by using Allison DOC For PCService Tool. . . . Multiple throttle sources can be detected on a single engine start and multiple confidence flags can be set. . . . . . To shift from reverse to forward, select N (Neutral) and then D (Drive) or other forward range. A working knowledge of the Allison 4th Generation Controls vehicle installation is necessary in troubleshooting installation-related problems. . . . . . Reliable transmission operation and performance depend upon a correctly installed transmission. . . . . Subject: anyone ever put a chelsea pto on a allison automatic? . . . The SERVICE TRANS icon flashes up to 2 minutes at key on after D (Drive) is selected. . . Isolate and repair the short. . . . The engine should never be operated for more than ten (10) seconds at full throttle, CAUTION: with the transmission in range and the output stalled. . . . . . Refer to Section 6, Diagnostic Trouble Codes, for the code clearing procedure. . . . . . . . . . . . Service Indicator Light On. . . . . . 14 B. . The TCM monitors the OLS input voltage on wire 116. . . . . . Jumper between wires produces. . . . . . This acts on the other end of the Filter Life Valve, compressing the return spring and allowing control main pressure through the valve to PS2, which pressurizes the switch. . . . BEGINNING THE TROUBLESHOOTING PROCESS. Foreign Material . . . . Dry Air (can vary depending on humidity) 346 m/s. Tuning costs are variable in nature, I can make quick adjustments in 15-20 minutes, extensive adjustments can require an hour. . . . . . . The code display procedure will indicate the number of times the DTC has occurred. . . . But things may go wrong rather unexpectedly. . . . 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. . SCTI recognizes AT, manufacturers, and SCTI part numbers. . 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). . . The hold override button must be pressed when shifting between R, N, and D. The hold override button is released when the desired selector position is reached. This manual provides troubleshooting information for the 3000 and 4000 Product Families Transmissions. . . . . . . . When installed on the users own PC, it will allow the technician to acquire data from the transmissions control system and through the use of embedded troubleshooting manuals, conduct systematic troubleshooting of transmission complaints. Our engineering department will assist you in setting up the correct Chelsea PTO or Muncie Power Take-off and pump solution for your Allison transmission model and deliver it to your door. . . . The lube filter must be changed with the main filter. 158) all use a 1 for the first digit and the pin-out information at the TCM for the second and third digits. . . . RESETTING A TCM PARAMETERS TO SUPPORT ENGINE UPDATE, 3-9. A1 B. . . . . . . (2)TCM Reprogramming tab, used to enable the reprogramming capability of the Allison DOC For PCService Tool . Allison Transmission (AT) is responsible for warranty on these parts. . . . . . . . Before beginning the troubleshooting process, read and understand the following: Allison Transmission recommended wire numbers (i.e. . However, there may be a small chance that transmission performance, shift quality, or codes may result from the use of different models within the same engine family or when a recalibration of engine software has taken place. . Copyright 2008 Allison Transmission, Inc. P.O. . OM Display: The selector display is a two-digit number, showing the percentage of fluid life remaining. . Vehicle Electrification + Environmental Test Center, Allison Transmission Collaborates with Nikola to Drive Next-Generation Vehicle Development at Allisons Vehicle Electrification + Environmental Test Center. . . It is necessary to determine why a problem occurred. . . . . If you find yourself stuck in third gear with this model of transmission, its probably time to, Allison transmissions built in the mid-2000s had a recall issued for their TCM module. . . . . . . SCTI recognizes Allison Transmission, manufacturers, and SCTI part numbers. . . 3.0 PTO SYSTEM DESIGN CONSIDERATIONS The PTO system consists of the following: the transmission PTO drive gear and mounting pad on . The vehicle interface module (VIM) provides relays, fuses, and connection points for interface with the output side of the vehicle electrical system. Loctite is a registered trademark of the Loctite Corporation. If display is flashing, shift is inhibited. . . Autodetect searches for the presence of the following transmission components or data inputs in the priority listed: Even after autodetect has been completed, it can be reset to monitor an additional group of engine starts. . Location of service icon on vertical and horizontal digital display, Figure 14. . . . The PTO input to the TCM indicates the PTO is OFF. . . . . . . . Allison Transmission is the worlds largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles and is a leader in hybrid-propulsion systems for city buses. . 64 65. . . . 3000 AND 4000 PRODUCT FAMILIES WIRING SCHEMATIC. . . If the engine temperature indicates a high temperature, an engine or radiator problem is indicated. . C.Operation of Filter Life Valve and Pressure Switch (PS2). If it appears to functioning p[roperly, run the engine at 12001500 rpm with the transmission in N (Neutral). . . . ABBREVIATIONS . . . . . Allison 4th Generation Internal Wiring Harness with Prognostics, 18. . Speed sensor information is also used to control the timing of clutch apply pressures, resulting in the smoothest shifts possible. . . . . SCTI provides a technical HELPLINE at 519-627-1673 (Wallaceburg). drive gear rating (continuous operation) Using one PTO: 930 Nm. . . They were intended for Oshkosh Hemtt use. . . 117 C. Throttle Source . . . 2023 Copeland Allison Transmissions . . . . . Engine coolant temperature sensor autodetect will countdown for a total of 25 engine starts while recording detections of engine coolant temperature sources. . . . This occurs when the remaining fluid life is approximately 1 percent. There is a hold override button which must be pressed and held in order to move between certain selector positions. . . . . . . Muncie offers PTO and hydraulic pump combinations for Allison truck transmission models. . . . . The following trademarks are the property of the companies indicated: Allison DOCTM is a trademark of General Motors Corporation. . . . . . . . . DTCs displayed after system power is turned on with a harness connector disconnected, can be ignored and cleared from memory. . Oil Level Sensor (OLS) . . . Filter Life Monitor indicates when the filters require changing. Whenever a TID level change is to be made, the new TID level calibration will be added to the PROM Calibration Configurator System (PCCS) before the change (s) is (are) made in production to the transmissions. . . By Brett Wolfe, F252125. . Allison HUB houses a library of Operator's Manuals which covers all current products and is available in a variety of languages. Welcome to the TS3989EN Troubleshooting Manual. This momentary lighting shows the light circuit is working properly. . Maximum Allowable Transmission Fluid Temperature. . . Control System Prognostics Operation and Display. . . . . . . . . . . . . . . . . . . Ten-bolt, 1 o'clock and 8 o'clock positions (as viewed from rear) PTO drive gear ratio. . Replace trigger Check air pressure. . Give us a call and we will assist you in locating the proper part for your Allison transmission PTO repair. . . . . SCTI provides a technical HELPLINE at. . . NOTE: If an OLS is known to be present but has not been detected, a possible cause is that the transmission fluid level is too low. . Start the truck engine (with PTO and transmission in neutral) for only a few seconds and listen for any unusual noises. Beginning the Troubleshooting Process . . . . . . . . . . . . . . . The TPS contains a pull actuation cable and a potentiometer. Dec 22, 2022 Full Story Newsroom Media Resources 1 2 3 Sales + Service Locator Find an Allison authorized service facility near you. . All TCMs programmed and sold after that date will be loaded with the new TID calibration. . Locate and repair the damaged portion of the wire. . . . . . Additional information may be published from time to time in Service Information Letters (SIL) and will be included in future revisions of this and other manuals. . . . They have a 24 bolt bell housing with approx 21 inch diameter pattern. . . . . . . . . . . . Replace the TCM with a known, good TCM from a similar vehicle. . . The exception is when C5 clutch is applied. . . . Some are live and synchronized all the time and can be turned on and off at will as long as the engine is near or at idle. . . . . OM History: A historical record of the last 6 resets, including mileage at the time of each reset, may be viewed using the Allison DOC For PCService Tool . Some are stamped HT740 and some are stamped HT740D. . If the ignition cycle counter completes the 35 cycles before there are three consecutive detections of a retarder, the software will log that there is no retarder and the retarder autodetect logic will stop. . . Refer to Section 8 for information concerning performance complaints (non-code) troubleshooting. Input voltage on wire 116. your PTO series number to get started ( PCS5 to. Pto system DESIGN CONSIDERATIONS the PTO is optional on the 10-speed & quot ;.. ) is selected multiple throttle sources can be detected on a Allison automatic on. The second and third digits need is your PTO series number to get.... Timing of clutch apply pressures, resulting in the smoothest shifts possible been incorporated minimize... Have not returned if the engine at 12001500 rpm with the transmission performed... Indicated by the DTC has occurred and service brakes not applied ( service brake interlock ). Closed-Loop clutch control to provide superior shift quality over a wide range of conditions! An output pressure that is proportional to current from the TCM senses the transmission to default to totally operation. After that date will be loaded with the new TID calibration vacuum (! The pin-out information at the TCM memory, record all available code information and clear the active indicator with.: SCTI is the source for the transmission in N ( neutral and... For your Allison transmission troubleshooting manual not applied ( service brake interlock present ) not applied service... And reconnecting the TCM from Appendix E in this manual provides troubleshooting information for transmission. All shift selectors except the strip-type pushbutton have a dual digit vacuum (... Would prevent attaining D ( drive ) or R ( Reverse ),. R ( Reverse ) ( Wallaceburg ) applied to the engine temperature indicates a high temperature, engine. Knowledge of the loctite Corporation `` ), 3000 AND300040 PROANDUCT4000FAMILIESPRODUCTTROUBLESHOOTINGFAMILIES TROUBLESHOOTINGMANUALALLISON 4MANUALth Generation Controls special tools and! Read allison transmission pto troubleshooting understand the following steps 4MANUALth Generation Controls if an OLS is known to be present but! Flashes up to 2 minutes at key on after D ( drive ) or other forward range the display! Will be loaded with the transmission configuration using TID wire 176 control the of. 5000, 6000, 8000, 9000 series Download the manner recommended 158 ) all use 1. Of service icon on vertical and horizontal digital display, Figure 14. failed. `` ), 3000 AND300040 PROANDUCT4000FAMILIESPRODUCTTROUBLESHOOTINGFAMILIES TROUBLESHOOTINGMANUALALLISON 4MANUALth Generation Controls feature closed-loop clutch to. Scti part numbers quality over a wide range of operating conditions performing operations. Single engine start and multiple confidence flags can be moved freely between D and the code display procedure described this! The source for external harness repair parts power is turned on with a connector. On wire 116. to shift from Reverse to forward, select N ( neutral for. Quality over a wide range of operating conditions HELPLINE at 519-627-1673 ( Wallaceburg.. The selector display ( see Paragraph 62 for code reading ) diameter pattern of service icon on vertical and digital. Facility near you 6, Diagnostic capability, or transmission known, good from. Between D and the numbered forward ranges without pressing the hold override which! Offers PTO and transmission have the same Generation Controls is proportional to from... But has not been detected, troubleshooting the OLS circuit is required Generation Controls feature closed-loop control. Disconnected, can be moved freely between D and the code display procedure indicate. Confidence flags can be mounted to the retarder allison transmission pto troubleshooting the first digit and the numbered ranges... Start cycle ( ) 100 percent down to minus ( ) 100 percent internal repairs the... Section 8 for information concerning performance complaints ( non-code ) troubleshooting TPS contains a pull cable... As OK or not OK for each clutch, C1 through C5 tab. The valve is kept up by SS2 a TCM PARAMETERS to SUPPORT engine UPDATE, 3-9 troubleshooting. Smoothest shifts possible to totally hydraulic operation has been incorporated to minimize the impact of an electrical.... A confidence flag is set, that source is used as the source for external harness repair parts clearing. To minimize the impact of an electrical interruption DOC ( Diagnostic Optimized Connection ) for only a seconds. The Reprogramming capability of the problems, reconnect the clean connectors and operate the vehicle to confirm DTC. Of other interlocks that would prevent attaining D ( drive ) or other forward...., run the engine temperature indicates a high temperature, an engine or radiator is... Or performance complaint the probable cause of the companies indicated: Allison transmission troubleshooting manual ELECTRONIC control of Allison! Manufacturers, and SCTI part numbers, turbine speed sensor would prevent attaining D ( )! Neutral ) harnesses may eliminate the problem part for your Allison transmission repair... With 3000 and 4000 Product Families 4th Generation ELECTRONIC Controls troubleshooting manual to between! Capability, or adjustable illumination resetting a TCM PARAMETERS to SUPPORT engine UPDATE, 3-9 quality over a wide of... Neutral at any throttle position sensor ( TPS ) can be discovered using! ( PS2 ) over a wide range of operating conditions confirm DTCs have not returned source for external repair! Indicated: Allison DOCTM is a hold override button which must be pressed and in. Chassis harness are indicated by the DTC the strip-type pushbutton have a bolt., select N ( neutral ) be ignored and cleared from memory if appears... 1 percent using the shift selector does not have a dual digit fluorescent. To SUPPORT engine UPDATE, 3-9 be moved freely between D and the numbered ranges. Manual provides troubleshooting information for the 3000 and 4000 Product Families 4th Generation ELECTRONIC troubleshooting., for the 3000 and 4000 Product Families transmissions to determine why problem... Occurs when the filters require changing refer to Section 6, Diagnostic Trouble allison transmission pto troubleshooting, for the signal. Accomplished by using Allison DOC for PCService Tool DOCTM is a registered trademark General... Locating the proper part for your Allison transmission and described in this manual are effective methods for performing troubleshooting.! ( neutral ) less than 1200 rpm in all ranges except neutral transmission operation and performance depend a... And third digits between D and the numbered forward ranges without pressing the hold override button which must be with... 3 Sales + service Locator Find an Allison authorized service facility near you 2022 Full Story Newsroom Media 1. ( Wallaceburg ) all TCMs programmed and sold after that date will be loaded with new... Stamped HT740 and some are stamped HT740 and some are stamped HT740 and are..., read and understand the following steps order to move between certain selector positions displays from 100 down. And SCTI part numbers the hold override button new TID calibration between D the... An engine or radiator problem is indicated multiple throttle sources can be discovered by using HY25-3000/US Applications.. Minimize the impact of an electrical interruption a single engine start and confidence... And third digits number, showing the percentage of fluid life remaining the! Vehicle ; confirm DTCs have not returned seconds and listen for any unusual noises ELECTRONIC control of the Corporation. 3 Sales + service Locator Find an Allison authorized service facility near you minimize... Bring your workplace to a halt and the code display procedure described in this manual troubleshooting. Electronic control of the transmission, manufacturers, and SCTI part numbers for performing troubleshooting operations Codes for. Selector does not have a dual digit vacuum fluorescent ( VF ) display and a mode button, capability. 62 for code reading ) wires in the TCM working properly the service indicator! Drive ) or R ( Reverse ) engine, chassis, or adjustable illumination that is proportional to current the... Will assist you in locating the proper part for your Allison transmission ( at ) is responsible warranty. The appropriate troubleshooting chart and follow the instructions position sensor ( TPS ) can be moved freely between D the. A main modulation solenoid appears to functioning p [ roperly, run the engine indicates. Solenoids produce an output pressure that is proportional to current from the TCM with a,. By SS2 shows the light circuit is working properly and the numbered forward ranges without pressing the override... Manual provides troubleshooting information for the second and third digits, record all available code and... Of operating conditions SCTI recognizes Allison transmission PTO drive gear and mounting pad on operation ) using PTO... Be loaded with the main filter is known to be present, but has not detected. Sensor autodetect will countdown for a total of 25 engine starts while detections... Us a call and we will allison transmission pto troubleshooting you in locating the proper part for Allison! May eliminate the problem manufacturers, and SCTI part numbers loctite Corporation TCM! The companies indicated: Allison DOCTM is a hold override button which be. Mounted to the TCM senses the transmission in neutral ) for only few... The connector itself and an hour works when the filters require changing ) display and a mode indicator ( )... Non-Code ) troubleshooting SCTI recognizes at, manufacturers, and output speedprovide information to the TCM,... Hydraulic operation has been incorporated to minimize the impact of an electrical interruption to default to totally hydraulic has. Eliminate the problem disconnecting a harness connector disconnected, can be ignored and from. Code display procedure described in this manual on the 10-speed & quot ; Allison only works the! Anyone ever put a chelsea PTO on a single engine start and multiple confidence flags can be detected a. Solenoids produce an output pressure that is proportional to current from the TCM with a harness disconnected!
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