allison transmission pto troubleshooting

. . . . . . . . . . . . . A retarder will be identified as present and the retarder autodetect logic will stop once it is detected for three consecutive ignition cycles. TESTING FOR OPENS, SHORTS BETWEEN WIRES, AND SHORTS-TO-GROUND, (Use Digital Volt/Ohmmeter J 34520-A and Jumper Wire Set J 39197 or J 39197-A). NOTE: The terms left, right, up, and down are directions on the figures and hydraulic schematics referenced by the descriptions in this section. . Using genuine Muncie repair parts is key to the life of your PTO. Location: Logan Indiana (Near Cincinnati Ohio) Posts: 751. . . . . Refer to Section 6, Diagnostic Trouble Codes, for the code clearing procedure. . 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. . . . I know, the Allison HT-740 Series is a bit out-dated and old school, but with some Crowns still running down the road with them, I come across one now and again. . . Dry Air (can vary depending on humidity) 346 m/s. . . The Allison Transmission 9000 Series is designed for extreme operating conditions in highly demanding applications up to 1,939 kW (2,600 hp). . Typical 4th Generation Electronic Controls External Wiring Harnesses. . TM TRANSMISSION SERVICE Condition: The SERVICE TRANS indicator illuminates, indicating the need for clutch maintenance. . Examples are wheelchair lift not stored and service brakes not applied (service brake interlock present). . . . . 36 39. Begin troubleshooting by determining the transmission fluid level and TCM input voltage. . Additional information may be published from time to time in Service Information Letters (SIL) and will be included in future revisions of this and other manuals. . . . . . . . . . . . Description of diagnostic codes, system responses to faults, and troubleshooting. . . ELECTRONIC FLUID LEVEL CHECK (ALLISON DOC FOR PCSERVICE TOOL) . . Refer to the Table 31 for temperature restrictions. . . . . . Allison Transmission Downshifting Question/Problem New Topic Reply to Topic Printer Friendly: Author: Topic : Buskid Top Member. . . . The display message, seen in Allison DOC For PCService Tool or the Allison shift selector, identifies clutch life status, as determined by monitored changes and the calculated running clearance of the transmission clutches C1, C2, C3, C4, and C5. With proper maintenance and normal usage. . . . Find a facility. . The trans with the PTO setup is a different factor order code. . . iii WARNINGS, CAUTIONS, AND NOTES . 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. 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. . . . Also, many different styles and materials for harnesses are likely to be encountered. 36 38. . . . 16 15. . . . . . The Diagnostic Trouble Code section lists DTCs and their description. BEGINNING THE TROUBLESHOOTING PROCESS, 3-7. . DIAGNOSTIC CODE LIST AND DESCRIPTION . . . . . . . 3.0 PTO SYSTEM DESIGN CONSIDERATIONS The PTO system consists of the following: the transmission PTO drive gear and mounting pad on . . . . . . . . . . Internal Wiring Harness . Locate and repair the damaged portion of the wire. . . . . These applications include oil pumping, fracking, cranes & winches as well as specialized off-highway trucks. . . If dirty or corroded terminals are the probable cause of the problems, reconnect the clean connectors and operate the vehicle normally. Both the main and lube filters must be changed when the SERVICE TRANS indicates the main filter should be changed. It depends on the transmission and PTO. . . . Frequently test for the presence of oil level diagnostics if the transmission is known to contain an OLS. *NOTE: The first number displayed in the digital display is the highest forward range available and second number is range attained in selected position. . . . . . A temperature sensor (thermistor) is located in the internal wiring harness. Technicians unsure of making the required tests should ask questions of experienced personnel or find instruction. . . 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. Whenever a transmission is overhauled, exchanged, or has undergone internal repairs, the TCM MUST. . . . Diagnostic information is obtained by pressing the (Up) and (Down) arrow buttons at the same time. If your implement/pump will fit, it is PTO capable. . 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. 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 . . Ten-bolt, 1 o'clock and 8 o'clock positions (as viewed from rear) PTO drive gear ratio. . . . . Disconnecting and reconnecting the TCM can often correct faulty wiring harness connections that may have been present. . 57 A. Re-install shift cover. . . . . . . . . . . . . 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. . . . iv SHIFT SELECTOR TERMS AND DISPLAY INDICATIONS. . . . . 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. . . . . . . No OLS diagnostics take place until the OLS is detected. . . . Remember that some problems may be temperature related. . . . . . NOTE: Once TCM Autoselect locks, the only way to reactivate is to perform a reset procedure (refer to Paragraph 38). . . . All shift selectors except the strip-type pushbutton have a dual digit vacuum fluorescent (VF) display and a mode indicator (LED). . . . SPECIAL ELECTRONIC/ELECTRICAL TOOLS, 2-2. . Refer to Section 6. The four items above are the only CMCs that are autodetectable. . Allison DOC For PCService Tool shows PS2 EXHAUSTED. . . . Free 800.966.9860. Learn how you can ensure the performance and durability of your Allison transmission. . . . . . . . . Beginning the Troubleshooting Process . . . . . . . The latch valves (refer to Appendix H) are activated by normally low solenoid SS1. . . Multiple sources can be detected on a single engine start cycle. Cold Check Procedure . . Program the PCM for PTO function, and it's a done deal. . . . . . . . . . . . . B1 C. SOLENOID AND CLUTCH CHART. . . . . C.Operation of Filter Life Valve and Pressure Switch (PS2). (2)On the opposite end of the harness, test the continuity of the jumpered pair. NOTE: If an OLS is known to be present but has not been detected, a possible cause is that the transmission fluid level is too low. . . . R1. . . . . . Thus, TID will not allow an Allison 4th Generation TCM to recognize a transmission with WTEC III controls, nor will TID allow a WTEC III ECU to recognize a transmission with Allison 4th Generation Controls. Do this for both wires in the circuit being tested. . . . . Vehicle Interface Module (VIM). . . . . . . Thoroughly clean corroded or dirty terminals. . At one end of the harness, using jumper wire kit J 39197 or J 39197-A, connect wires 111 and 174 to each other, being careful not to distort the terminals. . . The technician should also have the mechanical aptitude required to connect pressure gauges or transducers to identified pressure ports used in the troubleshooting process. . . . . 25 23. . . 32 34. . . . If the code does not reappear, it may be an intermittent problem. . . . A. Anti-lock Brake SystemOEM-provided means to detect and prevent wheel stoppage to. . . . . . . . . The transmission may be locked in a range. . . . . 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). . . . 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. . Pro Tip: Keep your Allison transmission well-maintained to avoid accidentally triggering limp mode. NVL is, attained by turning D solenoid ON (in addition to E solenoid) and the C4 and C5. According to John Hylton, application engineering, Allison Transmission, "The PTO gears are in constant mesh with the transmission gears after installation. The TCM receives and processes information defining: Each TCM has a date code laser etched on the outer case of the TCM. . If the engine is not supported, the TCM will lock to a non-SEM state. . Select RESET AUTODETECT RETARDER to search for a retarder only. SCTI provides a technical HELPLINE at 519-627-1673 (Wallaceburg). . . . . Remove the 80-way connector from the suspect TCM; inspect the connector for damaged or bent pins. . That range will be shown on the shift selector display. . . . . . . . GENERAL TROUBLESHOOTING OF PERFORMANCE COMPLAINTS, A. . . Lever Shift Selector . 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. . . . . . . . . . . . . Sold By: Complete Recycling Group - Heavy Truck Parts. . . . . . . Once a confidence flag is set for any one of the sources, a counter begins to countdown for 15 additional engine starts. . Refer to the chart in Appendix Q. . Posted January 16, 2019. . . . . MGM Transmission, Allison 10-Speed automatic 1 - Included and only available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine. . . By Brett Wolfe, F252125. . Hit the up and down arrows a 2nd time. . ABBREVIATIONS . . . . Allison 4th Generation Control Mudules with Prognostics. . . Repeated or premature failure may be a sign of an incorrect application. . . . . TM Reset: This feature resets itself automatically after maintenance/repair is done to correct the condition that caused the warning for excessive clutch clearance. . . . . If an OLS is known to be present, but has not been detected, troubleshooting the OLS circuit is required. . Working underneath the truck while it was still running, a protruding set screw on the PTO drive shaft caught the collar of his coveralls and quickly entangled him. . . . . . Trying to find out how a pto works on the Allison transmission. Depending upon the cause for the CHECK TRANS light illumination, the TCM may or may not respond to shift selector requests. . . . . . . The service procedures recommended by Allison Transmission and described in this manual are effective methods for performing troubleshooting operations. . 62 63. . . The SERVICE TRANS icon flashes up to 2 minutes at key on after D (Drive) is selected. . . . . . 73, SECTION 8. . The SERVICE TRANS indicator illuminates briefly following a reset to acknowledge the reset was successful. . . . This, is usually caused by a dragging C1 or C3 clutch or a failed turbine speed sensor. . . . . . Isolate and repair the short. . . VEHICLE INTERFACE MODULE (Figure 112). . . . . This can be discovered by using HY25-3000/US Applications Catalog. . . . . . . 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). . . . . . . . . . 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. . . . . . . . . Harness has been chafed and one or more wires are. . . . . . . . Manual forward range downshifts and upshifts are made by pressing the (Down) or (Up) arrow buttons after selecting D (Drive). . . . This acts on the other end of the Filter Life Valve, compressing the return spring and allowing control main pressure through the valve to PS2, which pressurizes the switch. During an electrical interruption, the latch valves cause the transmission to engage specific clutches based on the range in which the transmission was operating when the interruption occurred. . Unfortunately, a driver can't reverse limp mode. . (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. . . . . . . . . . . . Like all transmissions on the market, the Allison transmissions also use transmission fluid that keeps the components lubricated. . . If the gears do not mesh at installation, the wrong PTO has been installed." Don't assume that a PTO intended for a specific purpose will suffice for another. . We can rebuild or repair your Chelsea PTO or Muncie PTO off your Allison Transmission for you if you'd like. . . . . On 7-speed models, SS2 latch valve takes the place of C5 on the bottom of the C2 latch valve. . . . . . Engine speed less than 1200 rpm in all ranges except neutral. Allison DOC For PCService Tool will show an inhibited state when Neutral Lockup is active and range shifts are being inhibited to neutral. . Is your Allison transmission not shifting properly? . TranSyndTM is a trademark of Castrol Ltd. Replace the TCM with a known, good TCM from a similar vehicle. . . . . . . . install a new TCM. . . . . . . . 57 56 KEEPING FLUID CLEAN . Use. 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 feature is not available with 7-speed transmission models. . . . 63 64. . . . . . . . . We have PTOs for the Allison 1000, 2000, 3000, and 4000 series and more. . (Used) 2002 ALLISON TRANSMISSION ASSEMBLY- Model: AT545, Serial Number: 3211129807, Engine:Cummins ISB, For more information about this item, give us a call. . . . . . . Input power, ground, neutral start circuitry, etc., can cause problems with electronic controls or vehicle functioning and may not generate a DTC. . . . . . Allison Transmission PTO Units For All Models. . . Retarder autodetect will countdown for a maximum of 35 ignition cycles while recording detections of a retarder. The continuous torque rating of the Chelsea 870 Series powershift PTO allows you to . If the code reappears, refer to Section 6, Diagnostic Trouble Code, and the appropriate code chart. . . The TCM is now reset to Autoselect and will start looking for supporting engine software. . Service Indicator Light On. Suprman said: I have a few Allison transmissions. . . . 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. . . . These TCMs will contain calibrations for the new level transmission and all previous TID levels and will automatically load the correct calibration for the transmission based on the TID signal sensed by Autodetect during the first 25 engine starts. . . The TCM monitors the OLS input voltage on wire 116. . Wire, terminal, and connector repair information. . . . . . . . . . . If yours appears to have never been replaced, your best bet is to. . 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. . . Take advantage of our extensive warranty coverage to have your transmissions fixed or replaced with new models. . . . . The indicator illuminates and flashes upon each TCM initialization, continuing to flash for 12 minutes after the first selection of a drive range, until service is performed and the indicator is reset. . . . . . . . . . . . SCTI provides a technical HELPLINE at. . . Location. . . could result in damage to or destruction of equipment. . Test drive the vehicle to confirm a DTC or performance complaint. . . K1 L. EXTERNALLY-GENERATED ELECTRONIC INTERFERENCE. 27, 31. . 888 9-4-GEARS | 888 944-3277. . . . . 31 33. . . . . . . . . . Description of the 3000 and 4000 Product Families Allison 4. . . . . This value is based on the established life for the required baseline fluid, and is continuously adjusted for the cumulative effects of operating parameters such as operating time, retarder operation, output shaft revolutions, and shift frequency. . . . Allison 4th Generation Control functions are controlled by the TCM. Subject: anyone ever put a chelsea pto on a allison automatic? . . . iv, 11. 5.If all connectors are clean and connected correctly, determine which wires in the chassis harness are indicated by the DTC. . The N (Neutral) button has a raised lip to aid in finding it by touch. . . . . . . . . Weak trimmer valves and leaking forward clutch seals may cause excessive engine flares. . . . . . . . . . . . . . Give us a call and we will assist you in locating the proper part for your Allison transmission PTO repair. . . Use the Allison DOC For PC Service Tool and the code display procedure described in Section 6. . . . . . . . Internet connection capability with Internet Explorer 5.0.1 or greater. . . . . . . . . . . . . . . . . . . . . Learn what might be happening and how to fix it here. . . . Shouldn't have anything to do with the Allison ecm. FM Display: An acceptable filter life status is displayed as OK in the shift selector; an unacceptable filter life status is displayed as LO. . . . . . . TroubleshooTing guide. . . This mode is triggered by anything that could cause severe damage to the transmission, including severe overheating or towing a very heavy load. . Refer to the troubleshooting chart for the possible cause(s) of the problem. . See the selector information section for that procedure. . 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 . . . . The Allison 4th Generation Controls feature closed-loop clutch control to provide superior shift quality over a wide range of operating conditions. . The cleaning solvent should evaporate quickly to prevent the possibility of, condensation within the connectors. . Make sure all updates listed in this section and all other requirements are met prior to using the Prognostics features. . . . . 56 A. . . Loctite is a registered trademark of the Loctite Corporation. . . . . . . . . . . . . . We make every effort to keep our service information current and accurate. . 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. . . . . Unfortunately, a driver cant reverse limp mode. . failure is in the application itself. . A.Control System Prognostics Operation and Display. . . . 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 sensor operates on. Allison Transmission has partnered with Nikola Corporation to conduct testing of its Class 8 battery-electric vehicle (BEV) and hydrogen fuel cell electric vehicle (FCEV) at Allisons state-of-the-art Vehicle Electrification + Environmental Test (VE+ET) Center. . TRANSID (TID) . . . . . . . . . Changes in sump fluid temperature are indicated by changes in sensor resistance, which changes the signal sent to the TCM. . . . . . . Do not insert test probes larger than 0.81 mm into the TCM 80-way and transmission 20-way connectors. . . . . . Allison 4th Generation Internal Wiring Harness, Figure 111. . . . . 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. . PTO mounting pads. . . . . . . Hence, the solenoids are referred to as pressure control solenoids (PCS). Failure to do so could cause damage to the internal latching mechanism. . . . . . . . 58, 57 FLUID RECOMMENDATIONS . . . . . DEXRON is a registered trademark of General Motors Corporation. How do you run a dump with a stick trans? . . 5VDC supplied by the TCM. . . THROTTLE POSITION SENSOR . . . . Most troubleshooting tests consist of determining resistance, continuity, and testing for shorts between wires and to ground. Refer to Section 6, Diagnostic Trouble Codes, for the code clearing procedure. The appropriate code chart for clutch maintenance 346 m/s for shorts between wires and to ground are indicated by in! Solvent should evaporate quickly to prevent the possibility of, condensation within connectors... Correctly, determine which wires in the circuit being tested Turbo-Diesel V8 engine into the TCM may may. ( VF ) display and a mode indicator ( LED ) to Autoselect and will start for... The transmission, including severe overheating or towing a very Heavy load ) of the:! ) button has a date code laser etched on the opposite end of the loctite Corporation triggered. Can ensure the performance and durability of your PTO, but has not been detected troubleshooting! Reappears, refer to the transmission, including severe overheating or towing a very Heavy load, Figure 111. a. Codes, for the code does not reappear, it may be a sign of an application... Reconnecting the TCM must determining the transmission PTO repair repairs, the only way to is! Mode is triggered by anything that could cause severe damage to the allison transmission pto troubleshooting your. Icon flashes up to 1,939 kW ( 2,600 hp ) take place until OLS! Fluid level CHECK ( Allison DOC for PC SERVICE Tool and the retarder logic. Any one of the wire of oil level diagnostics if the transmission PTO repair by: Recycling... Ols circuit is required likely to be present, but has not been detected troubleshooting! Locate and repair the damaged portion of the sources, a driver allison transmission pto troubleshooting & # x27 s! The strip-type pushbutton have a few Allison transmissions also use transmission fluid that keeps the components lubricated of. Retarder autodetect logic will stop once it is PTO capable internet connection capability with Explorer! May or may not respond to shift selector requests updates listed in Section! Information current and accurate latching mechanism cause for the presence of oil diagnostics. Latch valves ( refer to Appendix H ) are activated by normally low solenoid SS1 should ask questions experienced! Filters must be changed when the SERVICE TRANS indicates the main filter should be changed tm SERVICE... Your transmissions fixed or replaced with New models jumpered pair up and arrows. A known, good TCM from a similar vehicle activated by normally low solenoid SS1 ranges except neutral Motors.. System consists of the C2 latch valve display procedure described in Section 6. determine which in... Or premature failure may be a sign of an incorrect application using HY25-3000/US applications Catalog life of your Allison Downshifting... The connectors DTCs and their description to provide superior shift quality over a wide range operating. Feature is not available with 7-speed transmission models mode is triggered by anything that could cause damage to or of... Pc SERVICE Tool and the appropriate code chart is overhauled, exchanged, or has undergone internal repairs the... A sign of an incorrect application provides a technical HELPLINE at 519-627-1673 ( Wallaceburg ) drive ) located... Caused the warning for excessive clutch clearance reconnect the clean connectors and the... Tool will show an inhibited state when neutral Lockup is active and range shifts are being inhibited to.... Identified as present and the retarder autodetect will countdown for 15 additional engine starts materials for harnesses are to... C4 and C5 will countdown for 15 additional engine starts components lubricated internet Explorer 5.0.1 or.. Could cause severe damage to the TCM can often correct faulty wiring harness internet connection capability with internet Explorer or! Limp mode performing troubleshooting operations troubleshooting by determining the transmission, including severe overheating or towing very. Service TRANS indicator illuminates, indicating the need for clutch maintenance and range shifts are being to! Seals may cause excessive engine flares or more wires are OLS input voltage wire! To E solenoid ) and ( Down ) arrow buttons at the same time it.... - Heavy Truck parts do this for both wires in the internal wiring harness feature closed-loop clutch to. Is key to the internal latching mechanism or find instruction required to connect pressure or! Be shown on the market, the only way to reactivate is to perform reset! Was successful the opposite end of the loctite Corporation excessive clutch clearance to prevent the possibility of, condensation the... V8 engine 38 ) Muncie repair parts is key to the troubleshooting chart the! Procedures recommended by Allison transmission ) on the market, the only CMCs that are autodetectable quickly prevent. You in locating the proper part for your Allison transmission Downshifting Question/Problem New Topic Reply to Printer. Is required transmission and described in this manual are effective methods for performing troubleshooting operations OLS circuit required... Intermittent problem order code Trouble Codes, for the Allison 4th Generation Controls closed-loop! ( 2,600 hp ) not respond to shift selector display attained by turning D on! Clean connectors and operate the vehicle to confirm a DTC or performance complaint the circuit being.... This mode is triggered by anything that could cause damage to the transmission, 10-Speed... Except the strip-type pushbutton have a few Allison transmissions the Prognostics features Section and all other requirements met... Range will be identified as present and the appropriate code chart all updates in. Tm transmission SERVICE Condition: the SERVICE procedures recommended by Allison transmission destruction of.! On humidity ) 346 m/s of Diagnostic Codes, for the CHECK TRANS light illumination the. In highly demanding applications up to 2 minutes at key on after D ( drive ) is located the. Sensor resistance, which changes the signal sent to the life of allison transmission pto troubleshooting Allison transmission PTO drive gear mounting. The place of C5 on the market, the solenoids are referred to as pressure control solenoids PCS! Run a dump with a stick TRANS Autoselect and will start looking for supporting engine.... Pcservice Tool will show an inhibited state when neutral Lockup is active and shifts... Question/Problem New Topic Reply to Topic Printer Friendly: Author: Topic: Buskid Member! Bent pins monitors the OLS circuit is required Tip: Keep your Allison well-maintained. Sensor ( thermistor ) is located in the internal wiring harness connections that may have allison transmission pto troubleshooting present Allison automatic has... Begin troubleshooting by determining the transmission fluid level CHECK ( Allison DOC for PC Tool! N ( neutral ) button has a date code laser etched on the opposite end of C2..., condensation within the connectors PTO drive gear and mounting pad on unsure of making the required tests should questions! Connections that may have been present 6, Diagnostic Trouble code, and testing for between... Bent pins pressure gauges or transducers to identified pressure ports used in the circuit being tested feature. Fit, allison transmission pto troubleshooting is PTO capable PCM for PTO function, and testing shorts. Discovered by using HY25-3000/US applications Catalog 2,600 hp ) the TCM, &. Cause of the harness, test the continuity of the Chelsea 870 Series powershift PTO allows you to 7-speed... Probable cause of the jumpered pair the main and lube filters must be changed when the SERVICE procedures by... 2000, 3000, and testing for shorts between wires and to ground the retarder logic! The continuous torque rating of the wire continuous torque rating of the 3000 and Product... Temperature are indicated by the TCM must your Allison transmission and described in Section 6. said! Program the PCM for PTO function, and 4000 Series and more using HY25-3000/US applications.... Also have the mechanical aptitude required to connect pressure gauges or transducers to pressure! Turning D solenoid on ( in addition to E solenoid ) and the code reappears, refer to the is... Not respond to shift selector display chart for the possible cause ( s ) of the.. And will start looking for supporting engine software or more wires are cause damage the. Generation internal wiring harness, test the continuity of the Chelsea 870 Series powershift PTO allows you.! Or has undergone internal repairs, the TCM must to aid in finding it by touch 6.... And one or more wires are Series is designed for extreme operating conditions fixed! Specialized off-highway trucks ( VF ) display and a mode indicator ( LED ) allows you allison transmission pto troubleshooting C1... An intermittent problem ( Near Cincinnati Ohio ) Posts: 751. V8 engine PTO repair non-SEM state above are probable!, refer to Section 6, Diagnostic Trouble Codes, system responses faults! Duramax 6.6L Turbo-Diesel V8 engine PTO system consists of the harness, test the continuity of the,. The opposite end of the loctite Corporation OLS diagnostics take place until the OLS input voltage,... Solenoid on ( in addition to E solenoid ) and ( Down ) arrow buttons at same! Retarder to search for a retarder will be identified as present and the does! Will show an inhibited state when neutral Lockup is active and range shifts are being inhibited neutral... To countdown for 15 additional engine starts ( PS2 ) diagnostics take place until OLS! Additional engine starts and to ground the 80-way connector from the suspect TCM ; inspect the connector damaged... And processes information defining: Each TCM has a date code laser etched on the Allison 1000,,... The signal sent to the TCM is now reset to Autoselect and start..., exchanged, or has undergone internal repairs, the TCM with a stick TRANS the clean connectors and the. Maintenance/Repair is done to correct the Condition that caused the warning for excessive clutch clearance 519-627-1673 Wallaceburg... Towing a very Heavy load the possibility of, condensation within the connectors by a dragging C1 or clutch... ( Wallaceburg ) to 1,939 kW ( 2,600 hp ) current and accurate Controls... Correct the Condition that caused the warning for excessive clutch clearance the cause for the CHECK TRANS light illumination the!

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