allison transmission pto troubleshooting

Purpose . . Thoroughly clean corroded or dirty terminals. . . . 32 34. . The indicator illuminates upon each initialization of the TCM, and remains on during vehicle operation until service is performed and the indicator is reset. . 2. 5VDC supplied by the TCM. . . . . . . This will also improve your vehicles overall functionality! But things may go wrong rather unexpectedly. . . . . IDENTIFICATION OF POTENTIAL CIRCUIT PROBLEMS . For example, Code P0960, indicates an open in the pressure control solenoid circuit, wires 111 and 174. . If the engine temperature indicates a high temperature, an engine or radiator problem is indicated. . . If the P.T.O. . . TM Reset: This feature resets itself automatically after maintenance/repair is done to correct the condition that caused the warning for excessive clutch clearance. . . The Throttle Position Sensor (TPS) can be mounted to the engine, chassis, or transmission. . . . Dont let a transmission in need of repairs bring your workplace to a halt! No continuity in a jumpered pair circuit (infinite resistance reading) indicates an open in the wire being tested. . 3.If a DTC is found in the TCM memory, record all available code information and clear the active indicator. . OUTPUT FUNCTIONS . . . . . . NOTE: Turn off the vehicle HIGH IDLE switch, if present, before shifting from N (Neutral) to D (Drive). Retarder Modulation RequestSignal from a retarder control device, Return to Previous RangeDiagnostic response in which the transmission is commanded, Serial Communication InterfaceUsed to transmit data and messages between the. . . . . . . SCTI provides parts to any Allison customer or OEM and is responsible for warranty on these parts. Visually confirm that the range selected was attained. . Additionally, OLS detection must occur within 12.5 seconds on any given engine start. To shift from forward to reverse, select N (Neutral) and then R (Reverse). . . These applications include oil pumping, fracking, cranes & winches as well as specialized off-highway trucks. . . . Whenever a transmission is overhauled, exchanged, or has undergone internal repairs, the TCM MUST. . . . . . . . M1 N. ALLISON DOC FOR PCSERVICE TOOL. . . . . . Dry Air (can vary depending on humidity) 346 m/s. . . . WIRING HARNESSES. . . . . . . . . . . . . . . . . A.Control System Prognostics Operation and Display. . . . . . . . . Allison. . . install a new TCM. or allow a special operating mode or condition, Engine/transmission serial data communications link, High-speed vehicle serial data communications link, Light-Emitting DiodeElectronic device used for illumination, Neutral No ClutchesNeutral commanded with no clutches applied, Neutral Very LowThe TCM has sensed turbine speed below 150 rpm when output speed, is below 100 rpm and engine speed is above 400 rpm when N (Neutral) was selected. . . . . . . . . . . . . . . On the opposite end of the harness, test the continuity of the jumpered pair. . . Test drive the vehicle to confirm a DTC or performance complaint. . . . . . . . . . . . With proper maintenance and normal usage. . . . . . . . . . . . . DIAGNOSTIC CODE MEMORY. . . . 32 35. . . . . . . . . The TCM issues commands to various solenoids in the two valve bodies to govern fluid flow to the clutches (including torque converter clutch). . 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. . . . . . . . . Web chelsea pto wiring diagram ford. CONTROL MODULE. CHECK TRANS LIGHT . . . . . . . . . Description of diagnostic codes, system responses to faults, and troubleshooting. . DIAGNOSTIC TROUBLE CODE LIST AND DESCRIPTION, 6-6. . . . . . . . . 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. . . 18 17. . . . .ii IMPORTANT SAFETY NOTICE . SYSTEM OVERVIEW . . Hence, the solenoids are referred to as pressure control solenoids (PCS). Once a confidence flag is set for any one of the sources, a counter begins to countdown for 15 additional engine starts. . . New fluid is displayed as 99 percent. When SS2 is on, the valve is kept up by SS2. . . . . . . . . . . . . . When the main filter is in an unrestricted state and lockup clutch pressure is applied, the switch is depressurized and in its Normally closed (NC) position which completes a circuit between wire 118 and analog returns wire 158. . . . . . . . . . . . . . . . . . . . . Application ConfigurationThis menu function serves as the platform for three different features: (1)General tab, which allows the user to select language (English only at this time), and unit of measure. . . . 62 63. . The engine speed signal is generated by ribs on the shell of the torque converter pump. . . . . . 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). . Remove the 80-way connector from the suspect TCM; inspect the connector for damaged or bent pins. FM Display: An acceptable filter life status is displayed as OK in the shift selector; an unacceptable filter life status is displayed as LO. . . . . . . 117 C. Throttle Source . . . . . . Shut off the engine and ignition before any harness connectors are disconnected or connected. Begin troubleshooting by determining the transmission fluid level and TCM input voltage. Learn what might be happening and how to fix it here. . . . . . . . . . . . The oil level sensor is available on any 3000 and 4000 Product Families transmissions except the 3000 7-speed transmissions. . . . . . A loose dipstick, clogged breather, improper dipstick marking and water in the transmission are also probable causes of the problem. Most troubleshooting tests consist of determining resistance, continuity, and testing for shorts between wires and to ground. Allison Transmission PTO Units For All Models. . . . . . . . . . clutches are applied to lock the transmission output. IT IS YOUR RESPONSIBILITY to be completely familiar with the warnings and cautions used in this manual. . could result in damage to or destruction of equipment. . th. When the . Allison DOC For PCService Tool uses a Windows style graphical user interface (GUI) and includes: User selected views of multiple transmission parameters, Active and historical diagnostic trouble codes (DTCs), Graphical instrument panel view of transmission parameters, Code driven links to embedded Allison 4th Generation Control System Troubleshooting Manuals, Reprogramming capability (available after satisfying Allison Transmission training certification requirements), Demo Mode which allows the user to practice the program without being connected to a vehicle, New animated screen by screen help support (found in Help, Video-based training materials, Allison DOC For PCService Tool Training Videos). . . . . The SERVICE TRANS icon flashes up to 2 minutes at key on after D (Drive) is selected. . . . . . . . . . . TRANSID (TID) . . . . . N1 P. INPUT/OUTPUT FUNCTIONS . . . Other CMCs can be changed at any time and are not related to autodetect. . . . Figure 13. . The turbine speed sensor on the 4000 Product Family transmission is located on the outside of the main housing. . . . . . . . . . The VIM for 12V systems uses all 12V relays. . . . . . . . Check for contaminates in air cylinder. NOTE: For the latest requirements, please refer to www.allisontransmission.com/Service/Electronic (Diagnostic) Tools/Requirements or the latest revision of Service Information Letter 12-TR-07, Rev. . . . . Multiple throttle sources can be detected on a single engine start and multiple confidence flags can be set. . . . I am posting in the CC forum because of so many discussions regarding the PTO on the Allison transmissions. NOTE: A broadband Internet connection is highly recommended for receiving updates and file downloads. . 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 . . . . . . . . . . . . . . . . . . . . When the CHECK TRANS has been illuminated for this purpose, the TCM registers DTC P088B, Very Deteriorated Filter. . . . TESTING FOR OPENS, SHORTS BETWEEN WIRES, AND SHORTS-TO-GROUND. . . . . . . . Allison DOC (Diagnostic Optimized Connection) For PCService Tool is a PC-based diagnostic tool for use with 3000 and 4000 Product Families transmissions. . . There are no restrictions on engine speed in neutral. . . . What I have is a Monaco with the 4000 series transmission that I believe is putting transmission fluid from the transmission . . . . These warnings and cautions are not exhaustive. The four items above are the only CMCs that are autodetectable. . . . . . See the selector information section for that procedure. . 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. . . . . Manual resets may also be performed by one of the following methods: With the ignition ON and the engine OFF, shift between N R N R N D N to reset the value displayed on the shift selector to OK. Display the Filter Life Monitor information and press and hold the MODE button of the Allison shift selector for 10 seconds. . . Use the P/N from your appropriate parts catalog or from Appendix E in this manual. . . . Clear any DTCs that may be present and test drive the vehicle to confirm the repair. . . . Sold By: Complete Recycling Group - Heavy Truck Parts. NOTE: Allison Transmission is providing for service of wiring harnesses and wiring harness components as follows: 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). . . . . . . . . Review the Installation Checklist in the 3000 and 4000 Product Families transmissions Tech Data for proper installation. . 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. . . If the transmission overheats during normal operation, use the Oil Level Sensor (OLS), if equipped, to check for correct fluid level. . . The 3700 SP, 4700 RDS, 4700/ 4800 EVS, 4700/4800 SP, and 4700 OFS have up to seven forward ranges and one reverse. . . . . Remember that some problems may be temperature related. Free 800.966.9860. . . . . . . . . . 61 62. . . With the ignition ON and the engine OFF, shift between N D N D N R N, pausing briefly (less than 3 seconds) between shifts, to reset the value displayed on the shift selector to 99 percent. B1 C. 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