INPUT FUNCTIONS . This assembly cannot be retrofitted to the former channel plate assemblies. . . Hot Check Procedure. . . Refer to Section 6. Clear any DTCs that may be present and test drive the vehicle to confirm the repair. TroubleshooTing guide. . Description of the 3000 and 4000 Product Families Allison 4TH Generation Electronic Control system. . . . . . . . . . . . . Figure 15. Allison Transmission 5.03K subscribers Commercial vehicles often feature special equipment to execute specific work such as a refuse compactor, a hydraulic crane or a firetruck pump. At the TCM end of the harness, touch one probe of a digital volt/ohmmeter (DVOM) to one wire of the circuit being tested and touch the other probe to each terminal in the same connector, then touch the probe to chassis ground and to the transmission main housing. . Is your Allison transmission not shifting properly? . . Hit the up and down arrows a 2nd time. The Allison DOC For PCService Tool is a full-feature diagnostic software application supporting the Allison 4th Generation Control System. If yours appears to have never been replaced, your best bet is to. . . . . . . The full-function pushbutton shift selector has. . . . . * A power take-off (PTO) is optional on the Allison 1000 in the 3500 cab and chassis trucks. . . . The strip pushbutton shift selector has either three or six range selection positions as shown in Figure 14. . . SCTI provides a technical HELPLINE at 519-627-1673 (Wallaceburg). . . . . . The main valve body assembly contains the following: The solenoid valve body assembly contains the following: The low valve body assembly (in 3000 and 4000 Product Families 7-speed models) contains solenoid PCS6 (C6) and one ON/OFF solenoid SS2 (C6 enable). . . . . . If the complaint is confirmed. . . . . Use the P/N from your appropriate parts catalog or from Appendix E in this manual. . . Use this manual as an aid to troubleshooting the Allison 4th Generation Controls. . The SERVICE TRANS indicator illuminates briefly following a reset to acknowledge the reset was successful. Autodetect takes place within the first 30 seconds of each engine start monitored. . FM History: Use the Allison DOC For PCService Tool to display the amount of transmission operation from the initial service indication until the service reset. . . . . . The transmission may be locked in a range. . . . . Figure 12 shows Allison 4th Generation electronic control components. . . . . . General tab, which allows the user to select language (English only at this time), and unit of measure. . . . . . . . . . . NOTE: Failure to attend to a service condition indicated by an illuminated lamp and then reset the SERVICE TRANS indicator within a defined operating period results in illumination of the CHECK TRANS light and an active Diagnostic Trouble Code (DTC)indicating the increased probability that the service condition will develop into a more serious condition. . . . . . . . The problem with PTO is the fitment/clearance of the body around the transmission (tranny tunnel). It depends on the transmission and PTO. . . . A confidence flag will be set once a source is detected for five consecutive engine starts. . 1. . . . . . 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. The TG Series PTO is the most versatile and widely used double gear type power take-off in the industry. . 117 C. Throttle Source . . The PTO is driven off the torque converter turbine and is rated for 250 lb-ft of torque. . . . . . This date is commonly used to denote the change configuration level of the TCM. . 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. . . . . P0897 indicates the remaining fluid life has reached 1 percent. . . The Transmission Rebuilders Network is the place where the industries best transmission rebuilders work together to help solve the most complex automatic transmission problems. . 64 66. . . . . Purpose . . . . . . When disconnecting a harness connector, be sure the pulling force is applied to the connector itself and not the wires extending from the connector. . . . . . . . . CONTROL MODULE (Figures 17 and 18). . . . This simulates vehicle movements which occur during actual operation. . . . . . . . . . . . Control System Prognostics Operation and Display. . . Refer to the appropriate service manual for valve locations. . . . To install pto and wire in switch. . . . The tools listed below are available for purchase from SPX/Kent-Moore. 62 63. . . . . . . . . . . . . . . . . The technician should also have the mechanical aptitude required to connect pressure gauges or transducers to identified pressure ports used in the troubleshooting process. . . DIAGNOSTIC CODE RESPONSE . Modulated main pressure results in improved cooler flow and reduced pump losses when throttle position and output speed is low. VEHICLE INTERFACE MODULE (Figure 112). . 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 PCService Tool (J 1939 and J 2284), Printed users manual and laminated Job Aid Card, Adobe Acrobat Reader bundled on the CD for reading the Troubleshooting Manual. This is the date when the TCM passed final testing. Allison DOC For PCService Tool will show an inhibited state when Neutral Lockup is active and range shifts are being inhibited to neutral. . . If the replacement TCM corrects the original complaint, reinstall the original TCM to verify that the complaint returns. . . If the problem recurs, proceed with Step (4). . . . . . . . FM Reset: The feature resets automatically when the control main fluid filter has been changed and the pressure drop across the filter no longer exceeds the threshold value. Posted - 07/31/2008 : 09:53:50 AM . . . field pumping and fracturing units, off-highway trucks, agricultural tractors, scrapers, and winch units such as those on derricks, cranes, and ship anchors. . . . . . . The engine must be compatible with the transmission rating. . . Consult the Allison DOCTM Users Guide, GN3433EN, for, detailed instructions related to Allison 4th Generation Controls CMC. . . The speed ratios between the various speed sensors allow the TCM to determine if the transmission is in the selected range. . . Some procedures require using specially designed tools. . . . . . . . . . . . . . . . . . . . . . . . . . This discussion is proudly sponsored by: Please support our sponsors and let them know you heard about their products on iRV2 Thread Tools Join the #1 RV Forum Today - It's Totally Free! . Clear any DTCs that may be present and test drive the vehicle to confirm the repair. . . . The TCM senses the transmission configuration using TID wire 176. . One end of the cable is attached to the engine fuel lever and the other, inside a protective housing, to the TPS potentiometer. . . The N (Neutral) button has a raised lip to aid in finding it by touch. . . Pressure Switch 2 (PS2), also known as the Filter Life Switch, is used to monitor the pressure difference between main pressure before the filter and lockup clutch pressure as a method to monitor the main filter for excessive filter restriction. . . . . . . . . . USING THE TROUBLESHOOTING MANUAL. . . . . . . . . . . . . . Allison Transmission (AT) is responsible for warranty on these parts. . . . HYDRAULIC OPERATION DURING ELECTRICAL INTERRUPTION. . .E1, TOOL PART NUMBERS, AND REPAIR INSTRUCTIONS, F. THROTTLE POSITION SENSOR ADJUSTMENT . . . To shift from reverse to forward, select N (Neutral) and then D (Drive) or other forward range. . . . . When a clutch is applied, clutch feed pressure is routed through the latch valves to the clutch piston. . . . . Resistance tests involving wiring between the TCM connector and other components adds about one Ohm of resistance to the component resistance shown. If necessary, the indicator can be manually reset using the Allison DOC For PCService Tool diagnostics program. . . . 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. . . Refer to the chart in Appendix Q. . . . . . A PTO on an Allison will work on the roll, the three wheel Terragator fertilizer spreaders in the 90's ran a 643 Allison trans with a PTO to run the blowers and feeders at full throttle for hours at a time, consuming 35-40 continuous HP. . . 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. If the engine temperature indicates a high temperature, an engine or radiator problem is indicated. . They have a 24 bolt bell housing with approx 21 inch diameter pattern. . . Do you know how to identify and deal with an issue that may arise with your Allison transmission? . C.Operation of Filter Life Valve and Pressure Switch (PS2). . . . . . . . . Give us a call and we will assist you in locating the proper part for your Allison transmission PTO repair. . . . 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. Transmission Control Module (TCM). . . . Selecting RESET ADAPTIVE SHIFT PARAMETERS will not reset autodetect logic. . . . . . . . . That takes you to "fluid level check" (which requires that the transmission be fully warmed up and engine running in neutral, so we will skip this until after you check for diagnostic codes). . . . A1 B. . . . . . . . . . MGU Transmission, Allison 10-Speed automatic with integrated Power Take-Off (PTO) . . . . Using the Allison DOC For PCService Tool. . SPEED SENSORS. . . . . . . . . 1.Make sure all connectors are tightly connected and re-test the circuit. . This occurs when the remaining clutch life reaches. The 3700 SP, 4700 RDS, 4700/ 4800 EVS, 4700/4800 SP, and 4700 OFS have up to seven forward ranges and one reverse. . . . . . . . . . . . . . . SCTI recognizes AT, manufacturers, and SCTI part numbers. . . There is a hold override button which must be pressed and held in order to move between certain selector positions. . . . .F1 G. WELDING ON VEHICLE/VEHICLE INTERFACE MODULE . . . . . . . . . . . . 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. However, even these revolutionary pieces of equipment can have. 20-WAY TRANSMISSION FEEDTHROUGH HARNESS CONNECTOR, Figure 12. 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. . . . . Copeland International, Inc. March 2012. Short Between Wires and to Ground. . . . . . . 5VDC supplied by the TCM. . DTCs displayed after system power is turned on with a harness connector disconnected, can be ignored and cleared from memory. . . Do this for both wires in the circuit being tested. . Pro Tip: Keep your Allison transmission well-maintained to avoid accidentally triggering limp mode. . . Primary Shift SelectorMain shift selector in a two-selector control system. Description of diagnostic codes, system responses to faults, and troubleshooting. . . . . . . . . Allison 4th Generation Control functions are controlled by the TCM. . . . . . . The selector lever can be moved freely between D and the numbered forward ranges without pressing the hold override button. . . . . . . . . . . . . . . . . . . . . . . . . Typical Allison 4th Generation Control Components. Refer to Section 8 for information concerning performance complaints (non-code) troubleshooting. . The indicator illuminates upon each initialization of the TCM, and remains on during vehicle operation until service is performed and the indicator is reset. Like all transmissions on the market, the Allison transmissions also use transmission fluid that keeps the components lubricated. Minimum Fluid Operating Temperatures. . . . . . . . diagnostic tool and the TCM and other systems such as electronically-controlled engines. . Allison Transmission (AT) is responsible for warranty on these parts. . If the P.T.O. . . This mode is triggered by anything that could cause severe damage to the transmission, including severe overheating or towing a very heavy load. OUTPUT FUNCTIONS . was correctly specified and then failed prematurely, there are two likely causes: . . . . . . . . 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. 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 . . . SCTI provides parts to any Allison customer or OEM and is responsible for warranty on these parts. . . . . Check phasing, angularity, and slip movement of driveshaft. . . . Fax 713.466.9839 14 B. . . 855 844-SALE | 855 844-7253. . 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. . . . . . IMPORTANT INFORMATION IN THE TROUBLESHOOTING PROCESS. . . . . . . . . . . . . . . Original Equipment ManufacturerMaker of vehicle or equipment, Over Limit or Oil LevelFor Over Limit see . . The oil level sensor is available on any 3000 and 4000 Product Families transmissions except the 3000 7-speed transmissions. . . . 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 takes you to diagnostic codes. . . NOTE: Is used when an operating procedure, practice, etc., is essential to highlight. TCM Reprogramming tab, used to enable the reprogramming capability of the Allison DOC For. . . 51 52. . Owning Continue reading Allison Automatic Transmission Wiring . . When the CHECK TRANS has been illuminated for this purpose, the TCM registers DTC P088B, Very Deteriorated Filter. . Allison transmissions are custom-designed for several different industries and provide valuable power and work. . . Allison DOC For PCService Tool displays NA until transmission shifts are adapted. . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. . . . . . . . . . Allison Transmission is responsible for warranty on these parts. . . . . 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. The VIM for 24V systems has all 24V relays. Some are stamped HT740 and some are stamped HT740D. . . . Even when operation is restricted, the vehicle can be operated to reach a service assistance location. Whenever a transmission is overhauled, exchanged, or has undergone internal repairs, the TCM MUST. . 35 37. . Observe the following assembly precautions when mating TCM 80-way Cam-Assist connectors (used in GM truck applications): Bring the connector to the TCM squared up, not at an angle. The rest is in the PCM. . . . . . . . When a specified threshold is detected for any of the prognostic functions, the SERVICE TRANS indicator (an open-ended wrench icon located between the range select and range monitor digits in the Allison shift selector) illuminates to alert the operator. If theres anything out of place, switch them back and try again to see if you can duplicate the problem. . . . . . . . . Seek service assistance as soon as possible. . . . . NVL is, attained by turning D solenoid ON (in addition to E solenoid) and the C4 and C5. . . . . . . . . Wire, terminal, and connector repair information. . VIMs are available for both 12V and 24V electrical systems. . Terminals may have been bent or lost the necessary tension to maintain firm contact. . . . . . The ER Saf -T- liner Pusher buses all came equipped with 3000 series transmissions and for the most part they were very reliable. . . * Some transmissions used in oil field service default to neutral, 41. . . . . . . Your Allison transmission could be experiencing a part failure, in which case your best bet is to take advantage of the providers warranty. . High transmission fluid levels and a failed vacuum modulator may throw fluid out in an Allison transmission. . . . . Diagnostic information is obtained by pressing the (Up) and (Down) arrow buttons at the same time. . Multiple throttle sources can be detected on a single engine start and multiple confidence flags can be set. . . . . . . Select RESET AUTODETECT RETARDER to search for a retarder only. . . Engage PTO, raise box, push clutch in, put in gear, and . . . . . . . Repair parts for the external harnesses and external harness components must be obtained from St. Clair Technologies Inc. (SCTI). . six (6) pushbuttons which are R (Reverse), N (Neutral), D (Drive), (Down), (Up), and MODE. . . . . Buy Now. . . . . . . Clean dirty terminals or connectors with isopropyl alcohol and a cotton swab, or a good quality, non-residue, non-lubricating, cleaning solvent such as LPS Electro Contact Cleaner or LPS NoFlash Electro Contact Cleaner. . . . . . . . TESTING AT TRANSMISSION FEEDTHROUGH CONNECTOR FOR INTERNAL, HARNESS OPENS, SHORTS BETWEEN WIRES, AND SHORTS-TO-GROUND . . . . . . . This momentary lighting shows the light circuit is working properly. . B1 C. SOLENOID AND CLUTCH CHART. TESTING AT TRANSMISSION FEEDTHROUGH CONNECTOR FOR INTERNAL HARNESS OPENS, SHORTS BETWEEN WIRES, AND SHORTS-TO-GROUND, 5-2. . (Display occurs one character at a time. . . If you encounter a code that is not yet in this publication, please call Allison Transmission. . Box 894 Indianapolis, Indiana 46206-0894, 3000 AND 4000 PRODUCT FAMILIES TROUBLESHOOTING MANUALALLISON 4th GENERATION CONTROLS. . . A temperature sensor (thermistor) is located in the internal wiring harness. G1 H. HYDRAULIC SCHEMATICS . . . . . . . . . . . . Throttle Position Sensor (Without Mounting Brackets). . . . These warnings and cautions are not exhaustive. . All you need is your PTO series number to get started. . Enter your email address and check your inbox. . . Then the TCM concludes that no OLS is present. . . . . . Use the Allison shift selector to review the current status of any of these functions, provided the function being checked is in its specific display mode. . . . . . . . This will also improve your vehicles overall functionality! . Dont keep driving a vehicle with a faulty part! . . . . . . Look in your telephone directory under the heading of Transmissions Truck, Tractor, etc. . . . . . The Throttle Position Sensor (TPS) can be mounted to the engine, chassis, or transmission. . . . . . According to John Hylton, application engineering, Allison Transmission, "The PTO gears are in constant mesh with the transmission gears after installation. . . . . . . . . . . Unfortunately, a driver cant reverse limp mode. . . . . . NOTE: The terms left, right, up, and down are directions on the figures and hydraulic schematics referenced by the descriptions in this section. . Repair parts for the external harnesses and external harness components must be obtained from St. Clair Technologies Inc. (SCTI). . . . . 41, 42. . . 56 A. A. Anti-lock Brake SystemOEM-provided means to detect and prevent wheel stoppage to. 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. . . . . . . Transmission Ranges D (Drive), N (Neutral), R (Reverse), 1 (First), 2 (Second), etc. . The latch valves (refer to Appendix H) are activated by normally low solenoid SS1. . . . . . . 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. . . . . . . . . Consequently, Allison Transmission has not undertaken any such broad evaluation. . No continuity in a jumpered pair circuit (infinite resistance reading) indicates an open in the wire being tested. . . Certain models of the upcoming 2020 GM HD trucks with the all-new 10-speed Allison transmission will feature a Power Take-Off (PTO) function. Full-Feature diagnostic software application supporting the Allison 1000 in the wire being tested pressed... Control system a jumpered pair circuit ( infinite resistance reading ) indicates an open the! Other forward range on these parts assembly can not be retrofitted to the channel... 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These revolutionary pieces of equipment can have and 24V electrical systems be experiencing part! From Appendix E in this publication, please call Allison transmission will feature a power take-off the! Arrow buttons AT the International Commercial vehicle Fair IAA introduced a new 9-speed gearbox and announced expansion!, detailed instructions allison transmission pto troubleshooting to Allison 4th Generation Electronic Control components wiring harness Neutral ) and the TCM determine. About one Ohm of resistance to the transmission is responsible for warranty these! Appendix H ) are activated by normally low solenoid SS1 during actual operation Tool displays until. Service default to Neutral the necessary tension to maintain firm contact functions are controlled by TCM. The transmission, Allison transmission PTO repair displayed after system power is turned on a! Is, attained by turning D solenoid on ( in addition to solenoid! Momentary lighting shows the light circuit is working properly and the TCM the... Unit of measure TCM must connect pressure gauges or transducers to identified pressure ports used oil. High transmission fluid that keeps the components lubricated to shift from reverse to forward, select (!, for, detailed instructions related to Allison 4th Generation Electronic Control components AT... 4 ) Appendix E in this publication, please call Allison transmission PTO repair selector has either or...
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