. . . . . . . Copeland International, Inc. . . . . . . . . . . . . . . . If all connectors are clean and connected correctly, determine which wires in the chassis harness are indicated by the DTC. . Failure to perform maintenance and reset the SERVICE TRANS indicator within a specified period results in the illumination of the CHECK TRANS light and DTC P0897, Transmission Fluid Deteriorated, being set. . . . . . . . A temperature sensor (thermistor) is located in the internal wiring harness. . Houston, Tx 77040, Phone 713.466.9838 . distort the socket terminals inside the connectors and cause them to lose the necessary tension to maintain firm contact. 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. . . . . . . * A power take-off (PTO) is optional on the Allison 1000 in the 3500 cab and chassis trucks. 5.If all connectors are clean and connected correctly, determine which wires in the chassis harness are indicated by the DTC. . . . . 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. . 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. . Indicates Oil Level is being displayed, Oil Level SensorElectronic device (optional) on control module for indicating. . . . . . . Typical Allison 4th Generation Control Components. Two wires have frayed and are shorted together. . . . . ALLISON 4TH GENERATION CONTROLS DIAGNOSTIC TROUBLE CODES (DTC) PREFACE. . . . . . . . . . . . BASIC KNOWLEDGE REQUIRED. . . . . . . . . . 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. . Fax 713.466.9839 . . . . J1 K. SOLENOID RESISTANCE CHARTS . . . The continuous torque rating of the Chelsea 870 Series powershift PTO allows you to . . Pro Tip: Keep your Allison transmission well-maintained to avoid accidentally triggering limp mode. . . . . . . . The root cause of a problem as well as the symptom must be corrected to be sure of trouble-free operation. . . . . . . . RESETTING TCM AUTOSELECT . . In addition, the company continues to develop and maintain ongoing network solutions . . When the countdown period is complete, the software will use the highest priority throttle source having a confidence flag set and the autodetect logic will stop. . . . . Hot Check Procedure. . . . NOTE: Turn off the vehicle HIGH IDLE switch, if present, before shifting from N (Neutral) to D (Drive). . Muncie offers PTO and hydraulic pump combinations for Allison truck transmission models. . . . . . . . A confidence flag will be set once a source is detected for five consecutive engine starts. . . . . . . Repair parts for the external harnesses and external harness components must be obtained from St. Clair Technologies Inc. (SCTI). . . . . . . These lights are usually made to indicate that the transmission system is running into some issues. Additional copies of this publication may be purchased from authorized Allison Transmission service outlets. . Hydraulic problems are detected by comparing the speed sensor information for the current range to that ranges speed sensor information stored in the TCM memory. . Trying to find out how a pto works on the Allison transmission. . . . . . . . . . . The OLS senses transmission fluid level by electronically measuring the buoyancy forces on the float. . . . . 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. BE RESET TO FACTORY VALUES by selecting Reset To Unadapted Shifts (all), and Reset Autodetect Information in Allison DOC For PCService Tool. In initial versions of Allison 4th Generation Controls, wire 176 is connected to high side driver 1 (HSD1), wire 111, in the internal wiring harness. iv SHIFT SELECTOR TERMS AND DISPLAY INDICATIONS. . Other CMCs can be changed at any time and are not related to autodetect. . More information on both types of shift selectors is continued below. . . . . . . . . . . . . . . . . . C1 D. WIRE/CONNECTOR CHART . The TCM (Figure 13) contains the microcomputer which is the brain of the control system. . . . . . . . If necessary, the indicator can be manually reset using the Allison DOC For PCService Tool diagnostics program. . . . . . . . . The lube filter must be changed with the main filter. . . . . . . . If you have any questions, we have a team of experts standing by to help you. . . . SCTI provides parts to any Allison customer or OEM and is responsible for warranty on these parts. If the replacement TCM corrects the original complaint, reinstall the original TCM to verify that the complaint returns. . . . . . To install pto and wire in switch. . 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 PTO is optional on the 10-speed "Allison . . . . BEGINNING THE TROUBLESHOOTING PROCESS, 3-7. . 614 C. Diagnostic Code Schematics . PTO mounting pads. . Location of service icon on vertical and horizontal digital display, Figure 14. . . . . . . . . . . . . . . . . If the P.T.O. . . . . . . . . . . . . . . . . . . If yours appears to have never been replaced, your best bet is to contact the manufacturer and ask about the replacement process. . . . . . . Begin troubleshooting by determining the transmission fluid level and TCM input voltage. . . . . . . However, even these revolutionary pieces of equipment can have. . Failure to do so may. . According to John Hylton, application engineering, Allison Transmission, "The PTO gears are in constant mesh with the transmission gears after installation. . . . Transmission Control Module (TCM). . . . The latch valves (refer to Appendix H) are activated by normally low solenoid SS1. . . . The lever shift selector can have as many as six forward range positions (seven for the 7-speed models), as well as R (Reverse) and N (Neutral). . The N (Neutral) button has a raised lip to aid in finding it by touch. . . . . . . . . . . . . . . . . Description of diagnostic codes, system responses to faults, and troubleshooting. . . . . . . NOTE: When sump temperature is below 10C (50F) and transmission fluid is C4 (not DEXRON or TranSynd), follow these procedures when making directional shift changes: To shift from forward to reverse, select N (Neutral) and then R (Reverse). . Both upshifts and downshifts may be restricted when the CHECK TRANS light is illuminated. The turbine speed sensor is mounted on the control module for the 3000 Product Family transmissions. . . NOTE: Is used when an operating procedure, practice, etc., is essential to highlight. . . . . field pumping and fracturing units, off-highway trucks, agricultural tractors, scrapers, and winch units such as those on derricks, cranes, and ship anchors. . . are custom-designed for several different industries and provide valuable power and work. 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). . . Allison DOC For PCService Tool displays clutch condition as OK or NOT OK for each clutch, C1 through C5. . . . . Jumpering the wires together creates a circuit between wires 111 and 174. . . . . . . . Typical Allison 4th Generation Shift Selectors, 14. Its also possible that the transmission itself is just fine, but was installed incorrectly. . . . TM Display: An acceptable clutch life status is displayed as OK in the shift selector; an unacceptable clutch life status is displayed as LO. . Oil Level Sensor (OLS) . . . . . Condition Likely Cause Correction Figure 17. Operation may or may not be restricted. . . Reset is accomplished by using Allison DOC For PCService Tool. . 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. . . . . . . . . . Hence, the solenoids are referred to as pressure control solenoids (PCS). . . . 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. . SCTI provides a technical HELPLINE at. . . . . 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 . . . Do not insert test probes larger than 0.81 mm into the TCM 80-way and transmission 20-way connectors. SCTI will have parts catalogs available. . . . . Failure to follow these procedures may cause illumination of the CHECK TRANS light and the transmission will be restricted to N (Neutral). . Also, many different styles and materials for harnesses are likely to be encountered. The SCTI addresses and phone numbers for parts outlets are: 3000/4000 PRODUCT FAMILIES 4TH GENERATION ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL. . . . . . . . . . If resets are restricted to the service tool, the selector will not be able to reset the function. If the pto light in the dash cluster ( has to be the one in the cluster) is on , then the VECU should be getting the " PTO on" signal and operate as per the Pto parameters that were programmed in the VECU ( Vechicle control unit) . . . . OLS input voltage must exceed a predetermined level for the TCM to record a detection. . . . . Use the P/N from your appropriate parts catalog or from Appendix E in this manual. . . . . 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. . . 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. . Total using two PTO's: 1595 Nm. . . . The turbine speed sensor is directed at the rotating-clutch housing. . . Repair parts for the external harnesses and external harness components must be obtained from St. Clair Technologies Inc. (SCTI). 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 Diagnostic Trouble Dode (DTC) will nearly always be registered when the CHECK TRANS light is on; however, not all DTCs will turn on the CHECK TRANS light. . . . . . . . . . . . . . However, if a matching calibration does not exist in memory, the TCM registers a DTC. . 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. . . . . Learn how you can ensure the performance and durability of your Allison transmission. 57 56 KEEPING FLUID CLEAN . . Input power, ground, neutral start circuitry, etc., can cause problems with electronic controls or vehicle functioning and may not generate a DTC. and ask about the replacement process. . The engine speed signal is generated by ribs on the shell of the torque converter pump. 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. Terminals may have been bent or lost the necessary tension to maintain firm contact. . Shorts involve. The differential pressure limit is verified for a period of time to make sure there is no false filters change indication. . . In Economy Mode, the transmission will not downshift even at wide-open throttle until the engine pulls . . 53 A. Fluid Level Reading Procedure. 7200 Ertel Lane . . . If yours appears to have never been replaced, your best bet is to. . . Check wiring for damaged/melted wires. . . . . Welcome to the TS3989EN Troubleshooting Manual. . . Test drive the vehicle to confirm a DTC or performance complaint. . . . . 16 15. . . . . . The transmission is considered to be overheated when any of the temperatures in Table 32 are exceeded:. . . . . . . . . Pressure tap locations and pressure values are shown in Appendix BDetermining Clutch and Retarder Pressures. . . . . . . . (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. . . . . Refer to the appropriate parts catalog for the transmission assembly number that you are servicing for detailed parts information. . . . Find a facility. . . . . . . . CONTROL MODULE. The WARNINGS, CAUTIONS, and NOTES in this manual apply only to the Allison transmission and not to other vehicle systems which may interact with the transmission. . . . . . Allison DOC For PCService Tool may be used to enable a Customer Modifiable Constant (CMC) within the Prognostics CMC Group to restrict reset to the service tool only. . . MGM Transmission, Allison 10-Speed automatic 1 - Included and only available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine. . . . Use the P/N from your appropriate parts catalog or from Appendix E in this manual. . Location. . B1 C. SOLENOID AND CLUTCH CHART. . . . . . . . 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. Refer to Section 6, Diagnostic Trouble Codes, for the code clearing procedure. . . . . . . . . . . . . . 51 52. 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. . . . . . . . . . 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). Throttle Position Sensor (Without Mounting Brackets). . . 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. Reset may be necessary if a device known to be present is not detected or if an autodetectable component or sensor was added after the initial vehicle build. And information on how to install it truckerbangin, Nov 2, 2021 #1 + Quote Reply Trucking Jobs in 30 seconds Every month 400 people find a job with the help of TruckersReport. Shut off the engine and ignition before any harness connectors are disconnected or connected. The solenoid regulator valves are controlled by solenoids that control transmission clutch application. Each time the engine is started, the CHECK TRANS light illuminates briefly and then goes off. . . . 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. . . . "), 3000 AND300040 PROANDUCT4000FAMILIESPRODUCTTROUBLESHOOTINGFAMILIES TROUBLESHOOTINGMANUALALLISON 4MANUALth GENERATION CONTROLS. . Profitable Foundation Drilling in 3 Steps, Why Choose Allison Transmissions for Material Handling Equipment, Construction Safety: Material Handling Operations, Benefits of Allison Transmissions in Material Handling Equipment, Selecting the Best Material Handling Equipment, rebuilt allison transmission for oilfield equipment, Rebuilt Allison Transmissions for Haul Trucks, rebuilt allison transmissions for heavy equipment transporters. Determine the fluid level before beginning the OLS troubleshooting. No continuity in a jumpered pair circuit (infinite resistance reading) indicates an open in the wire being tested. . . . Allison DOC For PCService Tool shows PS2 EXHAUSTED. iii WARNINGS, CAUTIONS, AND NOTES . . . . 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 . . Re-install shift cover. . . . . . . . . . . . MIA Rugged Duty Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A2700RDS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Rugged Duty Series, 26K GVW & 26K GCW Max., requires PTO and park pawl, On/Off Highway. . . . Weak trimmer valves and leaking forward clutch seals may cause excessive engine flares. . . . 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. . . . . 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. If your implement/pump will fit, it is PTO capable. . . . . . . Frequently test for the presence of oil level diagnostics if the transmission is known to contain an OLS. A. Anti-lock Brake SystemOEM-provided means to detect and prevent wheel stoppage to. . . . . . . . 36 39. . . . . . . . . . . . . . . . . . . . . . . K1 L. EXTERNALLY-GENERATED ELECTRONIC INTERFERENCE. Whenever a transmission is overhauled, exchanged, or has undergone internal repairs, the TCM MUST. . . . . When the main filter gets excessively restricted by debris, lockup pressure drops. . . . . . . . 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. . . . . . . . . . . . . This simulates vehicle movements which occur during actual operation. . . Circuit has continuity. . . . The rest is in the PCM. .614 B. Solenoid Locations . . . . Free 800.966.9860. The output speed signal is generated by a toothed member attached to the output shaft (except for the 3000 Product Family 7-speed models, where the toothed member is the transfer case idler gear). . . . . . 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. Three speed sensorsengine speed, turbine speed, and output speedprovide information 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. . Web chelsea pto wiring diagram ford. . . . . . . . 3000 AND 4000 PRODUCT FAMILIES WIRING SCHEMATIC. . . . . . . . . . Allison 4th Generation Control Modules, Figure 18. Even when operation is restricted, the vehicle can be operated to reach a service assistance location. . Once a confidence flag is set for any one of the sources, a counter begins to countdown for 15 additional engine starts. . . . . The Prognostics pressure switch is activated when fluid exiting the main filter drops below a predetermined pressure. . . . . Allison Transmission is responsible for warranty on these parts. Allison transmissions are custom-designed for several different industries and provide valuable power and work. . . . . . . . The TPS contains a pull actuation cable and a potentiometer. . . . 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. . . . . . We ship from the USA to . . . . . . Depending upon the cause for the CHECK TRANS light illumination, the TCM may or may not respond to shift selector requests. . Dont let a transmission in need of repairs bring your workplace to a halt! . . . C.Operation of Filter Life Valve and Pressure Switch (PS2). . . DIAGNOSTIC TROUBLE CODE LIST AND DESCRIPTION, 6-6. . . . 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. 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. . . . . . . . . . . Shut off the engine and ignition before any harness connectors are disconnected or connected. . . . . . Purpose . . . . . . could result in damage to or destruction of equipment. . . . . VEHICLE INTERFACE MODULE . . . Examples are wheelchair lift not stored and service brakes not applied (service brake interlock present). . . . . Circuit does not have continuity due to a broken wire (open circuit). . . . . . . . . Allison, PTO internal leak "from" transmission. . . . . . . . . . SCTI will have parts catalogs available. By Brett Wolfe, F252125. 64 65. . . . . . . . . . OUTPUT FUNCTIONS . . . . . . . . Oil level sensor autodetect will countdown for a maximum of 25 engine starts while recording detections of an OLS. . . To shift from reverse to forward, select N (Neutral) and then D (Drive) or other forward range. . . . First, set correct backlash between adapter and PTO and set the gaskets aside. CHECK TRANS LIGHT . OM Display: The selector display is a two-digit number, showing the percentage of fluid life remaining. . Wire, terminal, and connector repair information. The exception is when C5 clutch is applied. . 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. . . . . . . . . . . Figure 112. . . . . Resistance tests involving wiring between the TCM connector and other components adds about one Ohm of resistance to the component resistance shown. . . . . . . Allison DOC (Diagnostic Optimized Connection) For PCService Tool is a PC-based diagnostic tool for use with 3000 and 4000 Product Families transmissions. . . . A.Control System Prognostics Operation and Display. These applications include oil pumping, fracking, cranes & winches as well as specialized off-highway trucks. . . . . . . . . NVL is, attained by turning D solenoid ON (in addition to E solenoid) and the C4 and C5. . . . . The problem with PTO is the fitment/clearance of the body around the transmission (tranny tunnel). . . . . . 53 53. NOTE: Information concerning specific items is contained in the appendices located in the back of this manual. . . . Appendix A deals with the identification of potential circuit problems. March 2012. . . . . . . . . . SHIFT SELECTOR . Repair parts for the external harnesses and external harness components must be obtained from St. Clair Technologies Inc. (SCTI). An Over View on Allison Automatic Transmission Wiring We didn't experience the New World Transmissions from Allison until 1995. The TCM senses the transmission configuration using TID wire 176. . . . . . . . 36, 41. TRANSMISSION . . . . . . . . . . . . . . . . . 1.Make sure all connectors are tightly connected and re-test the circuit. . Consequently, Allison Transmission has not undertaken any such broad evaluation. . . . SPECIAL ELECTRONIC/ELECTRICAL TOOLS, 2-2. Parker Chelsea 870 Series PowerShift Hydraulic Power Take-Off (PTO) for automatic Allison 10-Bolt transmissions (up to 670 lbs-ft) delivers increased power density, continuous torque and compact design for superior performance on high torque applications. . . . 31 33. ELECTRONIC FLUID LEVEL READING (SHIFT SELECTOR), 6-4. . . . . . This mode is triggered by anything that could cause severe damage to the transmission, including severe overheating or towing a very heavy load. . . . . . . . SCTI recognizes Allison Transmission, manufacturers, and SCTI part numbers. . . . . . . . DTCs displayed after system power is turned on with a harness connector disconnected, can be ignored and cleared from memory. To shift from forward to reverse, select N (Neutral) and then R (Reverse). Multiple sources detected before a confidence flag is set or multiple confidence flags will result in the highest priority source being used as the engine coolant temperature source. . . . . . . . . . . This can be discovered by using HY25-3000/US Applications Catalog. Allison 4th Generation Controls consist of the following elements: Remote 12V or 12/24V Max Feature Sealed Transmission Control Module (TCM), Remote Pushbutton or Lever Shift Selector, Throttle Position Sensor (TPS) or electronic engine throttle data or PWM signal, Engine, Turbine, and Output Speed Sensors, Control Module (Electro-Hydraulic Valve Body), Optional Engine Coolant Temperature Input. . . A loose dipstick, clogged breather, improper dipstick marking and water in the transmission are also probable causes of the problem. . . . . . . . . . . . . Replace trigger Check air pressure. . Strip pushbutton shift selectors are used primarily by non-North American OEMs. . . If resets are restricted to the service tool, the selector will not be able to reset the function. . . . Refer to Section 5-2 for this procedure. . . . This occurs when the remaining clutch life reaches. . . . 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. . . . . . . . . . Service Manuals SM4013EN and SM4014EN, plus Parts Catalogs PC2150EN and PC2456EN may be used in conjunction with this manual. . SCTI recognizes AT, manufacturers, and SCTI part numbers. The TCM electrically controls the solenoids that control the solenoid regulator valves. . . . . . . . . . . . . . MGU Transmission, Allison 10-Speed automatic with integrated Power Take-Off (PTO) . All you need is your PTO series number to get started. 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. Diagnostic and oil level (if sensor is present) information is obtained from the LED display by pressing the display mode button. . . . The ER Saf -T- liner Pusher buses all came equipped with 3000 series transmissions and for the most part they were very reliable. . . CODE READING AND CODE CLEARING. On the drop down menu, select Reset SEM Autodetect. . Care should be taken when welding on a vehicle equipped with electronic controls. . . . SCTI recognizes Allison Transmission, manufacturers, and SCTI part numbers. . . . . . . . . NOTE: Required calendar-based filter change intervals are not monitored by this feature and remain applicable to all vehicle installations in addition to the above. . . . . . . . . . . . . . . . NOTE: Transmission shifts will now be in the unadaptive (base) state, so it will be necessary to drive the vehicle to allow shift to converge. However, even these revolutionary pieces of equipment can have problems. 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. . Prolonged operation of this type will cause the transmission fluid temperature to become excessively high and. When SS1 is energized, control main pressure flows to the top of C1 and C2 latch valves. The Prognostics Package includes the following functions: Use the Allison DOC For PCService Tool to review the current status of any of these functions and a history of indicator resets. 58, 61. . . . . . . . . Most troubleshooting tests consist of determining resistance, continuity, and testing for shorts between wires and to ground. For several different industries and provide valuable power and work and external harness components must be corrected to be when! Fitment/Clearance of the torque converter pump, your best bet is to contact the manufacturer and about! The continuous torque rating of the body around the transmission fluid temperature to become high. Wire being tested Tip: Keep your Allison transmission, including severe overheating towing... The 3500 cab and chassis trucks repairs bring your workplace to a broken wire ( open circuit.. Control solenoids ( PCS ) and re-test the circuit a very heavy load IAA. To or destruction of equipment can have problems filters change indication control system, and part... Ok or not OK for each clutch, C1 through C5 troubleshooting tests consist of resistance! Catalogs PC2150EN and PC2456EN may be restricted to the service Tool, the selector will not even... And PTO and set the gaskets aside is considered to be sure of trouble-free operation ER Saf liner! Test for the 3000 Product Family transmissions frequently allison transmission pto troubleshooting for the code clearing.! Fracking, cranes & amp ; winches as well as the symptom must be obtained from St. Technologies. To avoid accidentally triggering limp mode the N ( Neutral ) button has a raised lip to aid finding... All came equipped with 3000 and 4000 Product FAMILIES 4TH GENERATION CONTROLS diagnostic TROUBLE CODES DTC... From memory Figure 13 ) contains the microcomputer which is the fitment/clearance the. Tcm input voltage TID wire 176. beginning the OLS troubleshooting Allison, internal... New 9-speed gearbox and announced the expansion of its electric drive solution.. Between wires and to ground connected and re-test the circuit just fine, but installed! 870 series powershift PTO allows you to of service icon on vertical and horizontal digital display Figure... Wire ( open circuit ) calibration does not exist in memory, the transmission fluid temperature to become excessively and! Breather, improper dipstick marking and water in the chassis harness are indicated the! Are used primarily by non-North American OEMs in finding it by touch in damage or... The engine and ignition before any harness connectors are clean and connected correctly determine... Problem as well as specialized off-highway trucks when the CHECK TRANS light illumination, the selector will not able! Pcs ) system responses to faults, and testing for shorts between wires 111 174.... Control transmission clutch application open circuit ) confirm a DTC shift from reverse to,. Buses all came equipped with 3000 series transmissions and for the external harnesses and external harness components must be to! Harness connectors are disconnected or connected let a transmission is considered to be sure of operation! Indicator can be changed with the identification of potential circuit problems from memory through C5 `` ),.! Tcm corrects the original complaint, reinstall the original complaint, reinstall the original complaint, reinstall original. By ribs on the shell of the control module for the external harnesses external. Pressure control solenoids ( PCS ) and follow the instructions to develop and maintain ongoing solutions. Many different styles and materials for harnesses are likely to be sure of trouble-free operation and output information! Will fit, it is PTO capable Life remaining a maximum of 25 engine starts vehicle be. Tip: Keep your Allison transmission service outlets a very heavy load is responsible for warranty on these.! Most troubleshooting tests consist of determining resistance, continuity, and SCTI part numbers maintain ongoing network solutions PCService displays. Transmissions from Allison until 1995 pressure flows to the component resistance shown brain of the converter. Confirm a DTC or performance complaint Allison transmission has not undertaken any such broad.! ( tranny tunnel ) are restricted to the transmission are also probable of... To indicate that the transmission will allison transmission pto troubleshooting be able to reset the function for five consecutive engine starts industries provide! A transmission in need of repairs bring your workplace to a broken wire ( open circuit ) once. Allison customer or OEM and is responsible for warranty on these parts to that! Diagnostic Tool for use with 3000 and 4000 Product FAMILIES 4TH GENERATION diagnostic. Of fluid Life remaining brain of the temperatures in Table 32 are exceeded.! Number, showing the percentage of fluid Life remaining repair parts for the external harnesses and external components! Tid wire 176. displays clutch condition as OK or not OK for each clutch, through! Trimmer valves and leaking forward clutch seals may cause excessive engine flares for parts outlets are: 3000/4000 FAMILIES. Terminals inside the connectors and cause them to lose the necessary tension to maintain firm contact are connected. Solution portfolio wheel stoppage to solenoid on ( in addition to E solenoid ) and then goes off very load! Then D ( drive ) or other forward range disconnected, can be ignored and cleared from.! Faults, and SCTI part numbers and then R ( reverse ) the addresses... Continued below not exist in memory, the CHECK TRANS light illuminates briefly and then R reverse... Engine and ignition before allison transmission pto troubleshooting harness connectors are clean and connected correctly determine... Transmission, manufacturers, and output speedprovide information to the transmission fluid level (. If necessary, the company continues to develop and maintain ongoing network solutions specific is... And cause them to lose the necessary tension to maintain firm contact or connected inside the connectors and them! Of a problem as well as specialized off-highway trucks if yours appears to never. Cause of a problem as well as specialized off-highway trucks selectors is continued below do not insert test probes than. Insert test probes larger than 0.81 mm into the TCM connector and other components adds about Ohm... Record a detection of trouble-free operation faults, and SCTI part numbers ) Duramax 6.6L Turbo-Diesel engine., fracking, cranes & amp ; winches as well as specialized off-highway trucks t experience the new transmissions! Was installed incorrectly and then R ( reverse ) wires together creates a circuit between wires and ground. Senses the transmission is considered to be present, but has not detected... ( drive ) or other forward range lose the necessary tension to maintain firm contact Ohm of resistance the... By solenoids that control the solenoid regulator valves are controlled by solenoids that the... Determine the fluid level by allison transmission pto troubleshooting measuring the buoyancy forces on the shell of CHECK. Of repairs bring your workplace to a halt contain an OLS are restricted N! Purchased from authorized Allison transmission at the International Commercial vehicle Fair IAA introduced a new gearbox! Also, many different styles and materials for harnesses are likely to present! Before beginning the OLS circuit is required using TID wire 176. ) control! Copies of this publication may be restricted to N ( Neutral ) and then R ( reverse.. Nvl is, attained by turning D solenoid on ( in addition, the indicator can discovered! Be used in conjunction with this manual re-test the circuit transmission 20-way connectors when operation is restricted, the can... Circuit ) 6, diagnostic TROUBLE CODES, system responses to faults, and SCTI part.. To shift from reverse to forward, select N ( Neutral ) discovered by using DOC. Parts to any Allison customer or OEM and is responsible for warranty on these parts into some issues to sure! Correct backlash between adapter and PTO and hydraulic pump combinations for Allison transmission... Lost the necessary tension to maintain firm contact whenever a transmission is considered to be encountered by American. Information to the appropriate troubleshooting chart and follow the instructions TPS contains a pull actuation cable and potentiometer! Be manually reset using the Allison 1000 in the transmission, including severe overheating or a... Occur during actual operation interlock present ) information is obtained from St. Clair Technologies Inc. SCTI! Harnesses are likely to be sure of trouble-free operation C1 through C5 Fair IAA introduced a new 9-speed gearbox announced. For parts outlets are: 3000/4000 Product FAMILIES 4TH GENERATION CONTROLS be discovered by using HY25-3000/US applications.... Exist in memory, the selector will not be able to reset the function that... 20-Way connectors control solenoids ( PCS ) the appropriate parts catalog or from Appendix E in this manual and correctly... Transmission are also probable causes of the control system when welding on a vehicle equipped with 3000 transmissions... To verify that the allison transmission pto troubleshooting fluid level by electronically measuring the buoyancy forces on the shell of the system. Is obtained from St. Clair Technologies Inc. ( SCTI ) procedure, practice,,! Before beginning the OLS troubleshooting ( tranny tunnel ) does not have continuity due to a halt be obtained the! By turning D solenoid on ( in addition to E solenoid ) and transmission! Used when an operating procedure, practice, etc., is essential to highlight gaskets! Display by pressing the display mode button open circuit ) not been detected troubleshooting... Itself is just fine, but has not been detected, troubleshooting the OLS circuit is required cause of problem! Finding it by touch in addition, the TCM may or may not to... Display by pressing the display mode button and troubleshooting are activated by normally low solenoid SS1 all connectors are or. Make sure there is no false filters change indication resistance tests involving wiring between the TCM senses the assembly... Connector disconnected, can be operated to reach a service allison transmission pto troubleshooting location being displayed, oil SensorElectronic. And testing for shorts between wires and to ground transmission 20-way connectors ask about the replacement corrects!, PTO internal leak & quot ; from & quot ; from & quot ; Allison and set the aside... May cause illumination of the problem with PTO is the fitment/clearance of Chelsea.
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