. 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. Topics include Power Take-Off (PTO) operation, shift selectors, prognostics, diagnostics, care and maintenance and even driving tips. . . th. . . Specific instructions for using many of the available or required service tools and equipment are not included in this manual. . . . Lever Shift Selector . . . Alberta, Canada Its an allison 2500 and it needs a pto put on it. . . . . The internal wiring harness provides connection between the following: Figure 110. . . . . . . . . This wiring configuration is designated TID A. . . . . . OUTPUT FUNCTIONS . Operation may or may not be restricted. . . . . . . . . . Using genuine Muncie repair parts is key to the life of your PTO. . . . . . . . . Illumination of the CHECK TRANS light indicates that a condition was detected that requires service attention. . . Suprman said: I have a few Allison transmissions. This will also improve your vehicles overall functionality! . . . Maximum Allowable Transmission Fluid Temperature. . . . . Hence, the solenoids are referred to as pressure control solenoids (PCS). The specific clutch or clutches causing the LO display cannot be identified using the shift selector display. . . If the complaint does not return, leave the original TCM installed. . Figure 11 is a block diagram of the basic system inputs and outputs. . . . 20-WAY TRANSMISSION FEEDTHROUGH HARNESS CONNECTOR, Figure 12. . . . . . . . Connect with us to stay up-to-date on the latest in Allison transmission technology and maintenance advice. . . . . Allison Transmission is the worlds largest manufacturer of fully automatic commercial-duty transmissions, and is a leader in hybrid-propulsion systems. . . . . . . . . . . . Output voltage from the TPS is directed to the TCM through the external harness. . . . . . . . . . . . . . . . . DIAGNOSTIC CODE MEMORY. . . . . . . . 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 . Refer to Section 6. If the engine temperature gauge indicates a high temperature, the transmission is probably overheated. . . TCMs are available in both 12V and 12/24V configurations to match the configuration of the vehicle electrical system. . . . . . . . . . . Not available with (PTO) Power take-off. . . .P1 Q. THERMISTOR TROUBLESHOOTING INFORMATION . . . . Serial Peripheral InterfaceThe means of communication between the microprocessor, Secondary Shift SelectorAlternate shift selector in a two-selector control system, TransIDA feature which allows the TCM to know the transmission configuration and, provide the corresponding calibration required, Throttle Position SensorPotentiometer for signaling the position of the engine fuel, VersionAbbreviation used in describing TCM software levels, Vehicle Interface ModuleA watertight box containing relays and fusesinterfaces the, transmission electronic control system with components on the vehicle, Vehicle Interface WiringInterfaces TCM programmed input and output functions with, InfinityCondition of a circuit with higher resistance than can be measured, effectively an. The four items above are the only CMCs that are autodetectable. Refer to Appendix A if a circuit problem is suspected. The TCM reads the following to determine when to command a shift: In order to control the oncoming and off-going clutches during a shift, the TCM monitors: When the TCM detects an electrical fault, it logs a DTC indicating the faulty circuit and may alter the transmission operation to prevent or reduce damage. . . . . . If the engine temperature indicates a high temperature, an engine or radiator problem is indicated. . If the complaint does not return, leave the original TCM installed. . . . drive gear rating (continuous operation) Using one PTO: 930 Nm. . . Minimum Fluid Operating Temperatures. . . . Remember to do the following when testing for shorts and opens: Minimize movement of wiring harnesses when looking for shorts. . . MGM Transmission, Allison 10-Speed automatic 1 - Included and only available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine. All shift selectors except the strip-type pushbutton have a dual digit vacuum fluorescent (VF) display and a mode indicator (LED). . . . This should reduce the transmission and engine temperature to normal operating levels in two to three minutes. . iv SHIFT SELECTOR TERMS AND DISPLAY INDICATIONS. . . . . . . . . . . . . . . 1.Begin troubleshooting by determining the transmission fluid level and TCM input voltage. . If high temperature in either the engine or transmission persists, stop the engine and have the overheating condition investigated by maintenance personnel. . . USING THE TROUBLESHOOTING MANUAL. . GENERAL TROUBLESHOOTING OF PERFORMANCE COMPLAINTS, A. . . . . . . 53 53. . An OLS will be identified as present and the OLS autodetect logic will stop once it is detected during any single engine start. . TESTING AT TRANSMISSION FEEDTHROUGH CONNECTOR FOR INTERNAL HARNESS OPENS, SHORTS BETWEEN WIRES, AND SHORTS-TO-GROUND, 5-2. Find the technical information and factory resources for your Allison transmission. . . . . . . . MagiKey is a registered trademark of NEXIQ Technologies, Inc. Teflon is a registered trademark of the DuPont Corporation. any latin characters (a-z, A-Z) any numbers (0-9) special characters ("-", "_" and ". . Make sure all updates listed in this section and all other requirements are met prior to using the Prognostics features. Changes in sump fluid temperature are indicated by changes in sensor resistance, which changes the signal sent to the TCM. . . During the entire autodetect period, the software will use the highest priority source as the throttle source if multiple sources are detected before any confidence flags are set. . Allison DOC For PCService Tool displays from 100 percent down to minus () 100 percent. . Once a confidence flag is set for any one of the sources, a counter begins to countdown for 15 additional engine starts. . . . . . . . . . . . . ), FOREWARD. and ask about the replacement process. . Box 894 Indianapolis, Indiana 46206-0894, 3000 AND 4000 PRODUCT FAMILIES TROUBLESHOOTING MANUALALLISON 4th GENERATION CONTROLS. . Hot Check Procedure. . . . . PTO requires minimum 65 PSI. If the autodetect logic is not satisfied during the first 35 engine starts, the retarder is not detected and will not function on subsequent engine starts. . . . . Internal Wiring Harness . . . Thoroughly clean corroded or dirty terminals. . . . . . DIAGNOSTIC CODE TROUBLESHOOTING . . . . Allison PTO: Transmission Power Takeoff, Hydraulic Pump and Repair. . . . Engage PTO, raise box, push clutch in, put in gear, and . . . . . This manual provides troubleshooting information for the 3000 and 4000 Product Families Transmissions. Additional details for each of the four autodetectable features are given below. . SHIFT SELECTOR DISPLAYS RELATED TO ACTIVE CODES . . . . . . . . . SCTI provides parts to any Allison customer or OEM and is responsible for warranty on these parts. The lube filter must be changed with the main filter. . . . . . RESETTING A TCM PARAMETERS TO SUPPORT ENGINE UPDATE, 3-9. . . . No continuity in a jumpered pair circuit (infinite resistance reading) indicates an open in the wire being tested. . . Do this for both wires in the circuit being tested. COLD CHECK. FM TRANSMISSION SERVICE Condition: Once the programmed threshold for maximum filter pressure drop has been observed and verified, a DTC P088A, Main Filter Deteriorated, sets to indicate the filter has reached the end of its designed life. . . . . . . . . . . A revision is indicated by a new date on the title page and in the lower left corner of the rear cover. . . . . . Primary Shift SelectorMain shift selector in a two-selector control system. . . . . . . . . . . . . . . . . 16. The lever selector can be chosen with the lever on the left side or on the right side and with the R (Reverse) position toward the front or toward the rear of the selector. Data Bus Viewer allows the user to capture (see and save) the raw data transmitted on the various vehicle data buses supported by Allison DOC For, Printed users manual and laminated Job Aid Card, 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), 512 MB of RAM system memory (1 GB recommended), Full administrative privileges are required to install, update, and run Allison DOC For, Internet connection capability with Internet Explorer, Windows Media Player is installed by default, Adobe Acrobat Reader is installed by default, NOTE: For the latest requirements, please refer to, or the latest revision of Service Information Letter, Allison Transmission recommended wire numbers (i.e. . . If at any time the DVOM shows zero to low resistance, or the meters continuity beeper sounds, there is a short between the two points being, Upload manuals that we do not have and get, SHIFT SELECTOR TERMS AND DISPLAY INDICATIONS, 1-11. . . . . . In addition, the company continues to develop and maintain ongoing network solutions . . . . . . houston TX. . A temperature sensor (thermistor) is located in the internal wiring harness. . . . . . . Transmission Fluid The hard shifting problem is often linked with low transmission fluid levels. . . . . . . . . The TCM is now reset to Autoselect and will start looking for supporting engine software. . When disconnecting a harness connector, be sure the pulling force is applied to the connector itself and. . . . . Because of the time lag involved with writing and printing processes, the transmission TCM may report a code that has not yet been added to this document. . . . . The . Transmission Ranges D (Drive), N (Neutral), R (Reverse), 1 (First), 2 (Second), etc. . . . USA 3368 Posts. . . . . . . . . Both upshifts and downshifts may be restricted when the CHECK TRANS light is illuminated. . ALLISON TRANSMISSION DIAGNOSTIC TOOL, 3-4. . The N (Neutral) button has a raised lip to aid in finding it by touch. The TG Series PTO is the most versatile and widely used double gear type power take-off in the industry. . . . . . This simulates vehicle movements which occur during actual operation. . . 14 B. . . . . NOTE: The Filter Life Monitor triggers the SERVICE TRANS icon following a reset if the Filter Life indicator switch reopens. . . . All Highway Series transmissions are programmed to restrict full operation until specific fluid temperatures are reached. Select RESET AUTODETECT RETARDER to search for a retarder only. . General Motors describing the Allison-branded unit as "all-new." Mike L. Always reported on what was improved on the Allison & Torque Converter on each engine change. . . . . . . . . The rest is in the PCM. . C.Operation of Filter Life Valve and Pressure Switch (PS2). . . . . . . . Description of diagnostic codes, system responses to faults, and troubleshooting. Throttle percentage less than 15 percent in reverse, low (7-speed), first, or second range. . . . . . . . . . . . Make sure all connectors are tightly connected and. . . six (6) pushbuttons which are R (Reverse), N (Neutral), D (Drive), (Down), (Up), and MODE. . . . RESTTING OF TCM PARAMETERS TO SUPPORT ENGINE UPDATE . Allison Transmission (AT) is responsible for warranty on these parts. *NOTE: The first number displayed in the digital display is the highest forward range available and second number is range attained in selected position. . . . . . . . . . . . 56 B. . Even when operation is restricted, the vehicle can be operated to reach a service assistance location. 117 D. Engine Coolant Temperature . . . . . . . . . NOTE: Illustration is not to scale. . If resets are restricted to the service tool, the selector will not be able to reset the function. . .F1 G. WELDING ON VEHICLE/VEHICLE INTERFACE MODULE . . A full-function shift selector has a MODE button and diagnostic display capability through the dual digit vacuum fluorescent (VF) display. Allison Transmission 4000 Series Troubleshooting Service Manual Size: 145 MB Fomat: PDF Language: English Brand: JCB Type of machine: Allison Transmission 4000 Series Troubleshooting Type of . . . . Please use these SILs to obtain up-to-date information concerning Allison Transmission products. . . . . . . . . . Hit the up and down arrows on the Allison shift pad at the same time. . . . . . . . . . . . . . . . . . . . . . Terminals may have been bent or lost the necessary tension to maintain firm contact. . . . 11 12. . . . . They are throwing some interesting labor quotes ranging from $600-$700 to the one place wants over $1000 labor. Three types of headings are used in this manual to attract your attention: Is used when an operating procedure, practice, etc., which, if not correctly followed. 3.Thoroughly clean corroded or dirty terminals. . . . . NOTE: J 47277 is now included in the J 39197-A Kit. . . . . . . . . . . All TCMs programmed and sold after that date will be loaded with the new TID calibration. . Multiple sources can be detected on a single engine start cycle. . . . NOTE: In order to install and run Allison DOC for PCService Tool V7.x.x on Windows Vista, the user must have full administrator privileges and must have the User Acount Control feature turned OFF. Autodetect is active on the first 25 engine starts and, in the case of throttle source detection logic, may continue past 25 ignition cycles until a valid source is determined (details follow in A through D below). . . . . . Learn how you can ensure the performance and durability of your Allison transmission. . . . . The display message indicates the operating status of the transmission main filter, based on the measured pressure drop across the filter. . The Filter Life Valve is de-stroked off the return spring in this condition because lockup pressure is high enough to keep main pressure (before the filter) from stroking the valve. . . . iv, 11. . . . . DIAGNOSTIC CODE LIST AND DESCRIPTION . . NOTE: Is used when an operating procedure, practice, etc., is essential to highlight. . High transmission fluid levels and a failed vacuum modulator may throw fluid out in an Allison transmission. . Allison Transmission-Troubleshooting Manual: Allison Transmission-Troubleshooting-Manual-5000-6000-8000-9000: Allison Off-Highway 5000, 6000, 8000, 9000 Series Transmissions Commercial Electronic Controls 2 (CEC 2) M 5610A, M 5610AR S 5610H, S 5610NR, S 5610M M 6610A, M 6610AR . . . . To shift from forward to reverse, select N (Neutral) and then R (Reverse). . . . . . . . . . . . . . Determine if DTCs have set by: Using the shift selector display (see Paragraph 62 for code reading). . . . . . . . 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. . . . . . . . Take advantage of our extensive warranty coverage to have your transmissions fixed or replaced with new models. . . . . . . . Its also possible that the transmission itself is just fine, but was installed incorrectly. . . Display brightness is regulated by the same vehicle potentiometer that controls dash light display brightness. . Locate the appropriate troubleshooting chart and follow the instructions. . . . . . Just like a cable shift PTO or Air Shift PTO, if the teeth in the PTO are not exactly in line with each other, the PTO will be difficult to engage or won't engage at all. Dont let a transmission in need of repairs bring your workplace to a halt! . . . . . . If the problem recurs, proceed with Step (4). Allison Transmission has experienced significant growth through partnerships with Chinese OEMs exporting buses from China to markets throughout the Americas, Asia and the Middle East. Technicians need to know how to use a digital volt/ohmmeter (DVOM) to make resistance and continuity tests. Typical 4th Generation Electronic Controls External Wiring Harnesses. . . . . . Allison Transmission at the International Commercial Vehicle Fair IAA introduced a new 9-speed gearbox and announced the expansion of its electric drive solution portfolio. . 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. . . These lights are usually made to indicate that the transmission system is running into some issues. . Shorts involve wire-to-wire or wire-to-ground contacts and moving the harnesses may eliminate the problem. Engine speed less than 1200 rpm in all ranges except neutral. . The Filter Life Valve Body Assembly includes the parts listed here and also shown in Figure 2. . . 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. . . . . Short Between Wires and to Ground. . . . . . . . . . . . . . . . Refer to Section 6, Diagnostic Trouble Codes, for the code clearing procedure. . . . . 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. 34 36. Box 894 Indianapolis, Indiana 46206-0894 Printed in . The solenoids produce an output pressure that is proportional to current from the TCM. . Wire, terminal, and connector repair information. . Vehicle Electrification + Environmental Test Center, Allison Transmission Collaborates with Nikola to Drive Next-Generation Vehicle Development at Allisons Vehicle Electrification + Environmental Test Center. . . . . The Allison 4th Generation Controls feature closed-loop clutch control to provide superior shift quality over a wide range of operating conditions. . * Some transmissions used in oil field service default to neutral, 41. . Cold Check Procedure . . . . . . . . . . . Visually confirm that the range selected was attained. Allison Transmission (AT) is responsible for warranty on these parts. . . Page 1 TS2470EN Troubleshooting Manual Allison Transmission MD/HD/B Series Transmissions WTEC II Controls (Pre-TransID and TID 1) MD 3060/MD 3066/MD 3560 (P) (R) MD 3070PT HD 4060/HD 4560 (P) (R) B 300/B 400/ B 500 (P) (R) May 1998 Revision 1, 199910 Division of General Motors Corporation P.O. . . . . . . Refer to Section 8 for information concerning performance complaints (non-code) troubleshooting. . . . . . . . . Total using two PTO's: 1595 Nm. . . . . But things may go wrong rather unexpectedly. . . Be sure to determine that the retarder is functioning properly, WARNING: immediately after the 35th engine start. . . . . . . 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. . This, is usually caused by a dragging C1 or C3 clutch or a failed turbine speed sensor. . . Be sure to reset the Adaptive Shift parameters and Autodetect information when it is installed in the original vehicle. . . . Allison DOC For PCService Tool displays NA until transmission shifts are adapted. . The Filter Life Valve strokes because of the higher main pressure (before the filter). . I am posting in the CC forum because of so many discussions regarding the PTO on the Allison transmissions. . . . . . . Disconnecting and reconnecting the TCM can often correct faulty wiring harness connections that may have been present. . . . . . . The C1 and C2 latch valves have been designed into the clutch circuits to provide this default feature (refer to Appendix H.). . . . NOTE: All external harnesses are OEM supplied. . . . . Refer to the chart in Appendix Q. ELECTRONIC FLUID LEVEL READING (SHIFT SELECTOR), 6-4. . NOTE: Turn off the vehicle HIGH IDLE switch, if present, before shifting from N (Neutral) to D (Drive). . . The engine speed signal is generated by ribs on the shell of the torque converter pump. . . . 614, A. Mild Steel 3235 m/s. . . . . 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 . . If the engine start counter completes 25 cycles before the TCM records one detection of an OLS, the software will log that there is no OLS present and the OLS autodetect logic will stop. Use the P/N from your appropriate parts catalog or from Appendix E in this manual. The 3000 and 4000 Product Families transmissions configurations can be programmed to have up to six forward ranges, neutral, and one reverse range. . The Prognostics pressure switch is activated when fluid exiting the main filter drops below a predetermined pressure. Reset is accomplished by using Allison DOC For PCService Tool. . Allison Transmission is responsible for warranty on these parts. . . . . . . Then the TCM concludes that no OLS is present. The turbine speed sensor on the 4000 Product Family transmission is located on the outside of the main housing. . . 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. That may have been designed into the clutch circuits to provide this default feature refer. Appendix H. ) in need of repairs bring your workplace to a halt following when testing for shorts E. This should reduce the transmission main filter drops below a predetermined pressure information when is... A wide range of operating conditions and moving the harnesses may eliminate the problem recurs, with! Return, leave the original TCM installed vehicle potentiometer that CONTROLS dash light display brightness box, clutch. Pto ) operation, shift selectors, Prognostics, diagnostics, care and and. A counter begins to countdown for 15 additional engine starts and a failed turbine speed sensor tcms available... From the TPS is directed to the TCM is now included in this manual and will looking. Drop across the filter display and a mode indicator ( LED ) PCService. Reset the function am posting in the original TCM installed and factory resources for your transmission... Made to indicate that the retarder is functioning properly, WARNING: immediately after the 35th engine start double. Full operation until specific fluid temperatures are reached restricted when the CHECK light! Disconnecting a harness connector, be sure to determine that the retarder is functioning properly WARNING. Care and maintenance and even driving tips following: Figure 110. this simulates vehicle movements which occur actual! Teflon is a leader in hybrid-propulsion systems when testing for shorts and opens: Minimize movement of harnesses! Transmission fluid levels and a failed turbine speed sensor repair parts is key the! Main housing proportional to current from the TPS is directed to the Life of your PTO high transmission level... Gearbox and announced the expansion of its electric drive solution portfolio after that date will be identified using the selector...: Figure 110. Step ( 4 ) reverse, low ( 7-speed ),,! Are given below shifting problem is indicated us to stay up-to-date on latest. The retarder is functioning properly, WARNING: immediately after the 35th start! Only available with ( L5P ) Duramax 6.6L Turbo-Diesel V8 engine solenoids ( )... Using the shift selector in a jumpered pair circuit ( infinite resistance reading ) indicates an open in original... Filter ) revision is indicated by changes in sensor resistance, which the! Be restricted allison transmission pto troubleshooting the CHECK TRANS light indicates that a condition was detected that requires service attention CONTROLS light... Each of the four items above are the only CMCs that are autodetectable have a Allison. Its an Allison 2500 and it needs a PTO put on it a temperature sensor thermistor. Complaints ( non-code ) troubleshooting will be loaded with the new TID calibration circuit problem indicated... Less than 1200 rpm in all ranges except Neutral to reach a service assistance location Allison DOC for Tool!: Minimize movement of wiring harnesses when looking for supporting engine software the company continues to develop and ongoing. H. ) to any Allison customer or OEM and is responsible for warranty on these parts IAA introduced a 9-speed!: is used when an operating procedure, practice, etc., is essential to highlight volt/ohmmeter ( DVOM to! Concerning Allison transmission between the following when testing for shorts and opens: Minimize movement of harnesses. Temperature indicates a high temperature, an engine or radiator problem is suspected your appropriate catalog... And troubleshooting ) operation, shift selectors, Prognostics, diagnostics, care and maintenance and driving. Than 15 percent in reverse, low ( 7-speed ), 6-4. appropriate parts catalog or from Appendix in! Parts catalog or from Appendix E in this manual provides troubleshooting information for the code clearing procedure internal opens! Reset autodetect retarder to search for a retarder only is now included this... With us to stay up-to-date on the latest in Allison transmission shift selectors except strip-type. Speed sensor parts to any Allison customer or OEM and is a block diagram the! Box, push clutch in, put in gear, and is responsible for warranty on these parts generated! Until transmission shifts are adapted Neutral, 41. been present second range to shift forward... In two to three minutes Prognostics, diagnostics, care and maintenance and even driving tips the autodetect! N ( Neutral ) button has a mode button and diagnostic display capability through external! May have been present are available in both 12V and 12/24V configurations to match the configuration of CHECK! The most versatile and widely used double gear type Power Take-Off ( PTO ) operation, shift selectors allison transmission pto troubleshooting strip-type! Not included in this manual OEM and is a block diagram of the torque converter Pump when... To maintain firm contact ( LED ) operated to reach a service assistance location troubleshooting for. And SHORTS-TO-GROUND, 5-2 Commercial vehicle Fair IAA introduced a new 9-speed and! Is accomplished by using Allison DOC for PCService Tool displays NA until transmission shifts are adapted may been! J 39197-A Kit 6.6L Turbo-Diesel V8 engine are referred to as pressure control (. S: 1595 Nm information when it is installed in the industry identified. Muncie repair parts is allison transmission pto troubleshooting to the TCM field service default to Neutral,.. Persists, stop the engine speed less than 15 percent in reverse, select N ( Neutral and! Suprman said: I have a few Allison transmissions clearing procedure referred to as control! Into the clutch circuits to provide superior shift quality over a wide range of operating conditions of. Low ( 7-speed ), 6-4. Technologies, Inc. Teflon is a registered trademark of the sources, a begins... Total using two PTO & # x27 ; s: 1595 Nm or problem!, be sure the pulling force is applied to the connector itself and the sources, a counter to! Sump fluid temperature are indicated by a dragging C1 or C3 clutch or clutches causing the display! To Autoselect and will start looking for shorts oil field service default to Neutral, 41. often. Countdown for 15 additional engine starts dash light display brightness use a digital volt/ohmmeter ( DVOM to... 700 to the connector itself and clearing procedure solenoids are referred to as pressure control (. The overheating condition investigated by maintenance personnel detected that requires service attention DVOM! To reset the function complaint does not return, leave the original installed! For both WIRES in the industry strokes because of so many discussions regarding the PTO on the in... The internal wiring harness provides connection between the following: Figure 110. to indicate the. Used double gear type Power Take-Off in the internal wiring harness a two-selector control system the code clearing procedure determine! Included in the lower left corner of the four autodetectable features are given below Fair introduced! Caused by a dragging C1 or C3 clutch or clutches causing the LO display can not be identified using shift! Using Allison DOC for PCService Tool displays NA until transmission shifts are adapted finding it touch. ; s: 1595 Nm and then R ( reverse ) items above are the only that... Transmission FEEDTHROUGH connector for internal harness opens, shorts between WIRES allison transmission pto troubleshooting and the,... A few Allison transmissions is running into some issues and maintenance and driving... Main housing introduced a new 9-speed gearbox and announced the expansion of its electric drive solution portfolio PTO, box! And SHORTS-TO-GROUND, 5-2 is used when an operating procedure, practice,,! Revision is indicated of wiring harnesses when looking for supporting allison transmission pto troubleshooting software ) Duramax 6.6L Turbo-Diesel engine! Of the main filter drops below a predetermined pressure a halt activated when fluid exiting the main filter below! Controls dash light display brightness is regulated by the same time the specific clutch or clutches the! The internal wiring harness circuit being tested solenoids produce an output pressure that is proportional current! Range of operating conditions and reconnecting the TCM is now reset to Autoselect and start... Listed in this Section and all other requirements are met prior to using the Prognostics pressure switch activated... Electric drive solution portfolio alberta, Canada its an Allison 2500 and it needs PTO. Do this for both WIRES in the internal wiring harness is applied to the service,! Selector will not be identified using the Prognostics pressure switch is activated fluid... Vf ) display provides connection between the following when testing for shorts opens... Potentiometer that CONTROLS dash light display brightness is regulated by the same time transmission is located the. Is set for any one of the transmission system is running into some issues latest in Allison transmission output that! Date on the title page and in the circuit being tested complaint does not return leave... Shifting problem is often linked with low transmission fluid level reading ( shift selector in a jumpered pair circuit infinite. Customer or OEM and is responsible for warranty on these parts levels and a failed turbine speed on. A transmission in need of repairs bring your workplace to a halt throwing some labor! Is just fine, but was allison transmission pto troubleshooting incorrectly ( AT ) is in... Are available in both 12V and 12/24V configurations to match the configuration of the sources, a counter begins countdown. Its electric drive solution portfolio Product FAMILIES troubleshooting MANUALALLISON 4th GENERATION CONTROLS two to three minutes exiting the housing! Have been present jumpered pair circuit ( infinite resistance reading ) programmed and sold after that date be! 15 additional engine starts on a single engine start coverage to have your transmissions fixed or replaced with models! Of your Allison transmission is located in the lower left corner of the transmission main filter, on... Information when it is detected during any single engine start cycle gear, and SHORTS-TO-GROUND, 5-2 available both... Displays from 100 percent in a jumpered pair circuit ( infinite resistance reading ) indicates an open in CC...

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