allison transmission pto troubleshooting
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. nabuckeye.org. . . . . . . . . Selecting RESET ADAPTIVE SHIFT PARAMETERS will not reset autodetect logic. . . . Purpose . . . . . . . R1. . . The TCM is now reset to Autoselect and will start looking for supporting engine software. . . . . . . That is controlled by a solenoid and an electric switch on the dash. nabuckeye.org. . . The TCM receives and processes information defining: Each TCM has a date code laser etched on the outer case of the TCM. If theres anything out of place, switch them back and try again to see if you can duplicate the problem. . . . . . . . After the OLS circuit is repaired, reset autodetect or manually select the OLS function using the Allison DOC For PCService Tool. . . . . . 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). . . . . . . 
. . TM TRANSMISSION SERVICE Condition: The SERVICE TRANS indicator illuminates, indicating the need for clutch maintenance. . . This occurs when the remaining clutch life reaches. . You can specify the Chelsea Electronic Overspeed Control (EOC) with all Chelsea powershift PTOs. . . . . . . . COLD CHECK. Both the main and lube filters must be changed when the SERVICE TRANS indicates the main filter should be changed. Appendix A deals with the identification of potential circuit problems. . Test drive the vehicle to confirm a DTC or performance complaint. . . . . . . . . The turbine speed sensor is mounted on the control module for the 3000 Product Family transmissions. Parts misplaced, components installed incorrectly, pieces in the wrong location and the use of improper parts. 
. . . . . . . When the power shift PTO is disengaged, the solenoid de-energizes. . . The PTO will automatically disengage at that speed. . . . . . . 35 37. . . . . . . . If the noise stops once the attachment is removed, then you can start to look at the rest of the system. . . 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. . . . . . . . . . . . . . . . . . Allison DOC For PCService Tool indicates the Filter Life Monitor expired as YES or NO. We make every effort to keep our service information current and accurate. That range will be shown on the shift selector display. WebPTO operates correctly under light loads but stumbles under heavy loads. . . . Contaminates in solenoid valve. . . . . . . Reviewing the Table of Contents will aid you in quickly locating information. . . . 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. . . Older ones are manual cable shift. . . IMPORTANT INFORMATION IN THE TROUBLESHOOTING PROCESS. Speed sensor information is also used to control the timing of clutch apply pressures, resulting in the smoothest shifts possible. If all connectors are clean and connected correctly, determine which wires in the chassis harness are indicated by the DTC. . . . The Diagnostic Trouble Code section lists DTCs and their description. . . Use this manual as an aid to troubleshooting the Allison 4th Generation Controls. . 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. . . 
A working knowledge of the Allison 4th Generation Controls vehicle installation is necessary in troubleshooting installation-related problems. . . 57 56 KEEPING FLUID CLEAN . . Need to know trans model and . . . . . . . . . . . . . . . . IT IS YOUR RESPONSIBILITY to be completely familiar with the warnings and cautions used in this manual. More information on both types of shift selectors is continued below. Use special tools when and in . . BE RESET TO FACTORY VALUES by selecting Reset To Unadapted Shifts (all), and Reset Autodetect Information in Allison DOC For PCService Tool. . . . . . . . . . Worn or damaged clutch pack. . . . . . . . . . . . . . . . G1 H. HYDRAULIC SCHEMATICS . . . . . . . . The technician should also have the mechanical aptitude required to connect pressure gauges or transducers to identified pressure ports used in the troubleshooting process. . . . . . . 
. . . TRANSMISSION CONTROL MODULE (TCM) . . . . Refer to the Table 31 for temperature restrictions. . 
. . . SCTI provides a technical HELPLINE at 519-627-1673 (Wallaceburg). . The mechanical aspect has a few key areas of concern. . . Refer to Section 6, Diagnostic Trouble Codes, for the code clearing procedure. . . . . . . . . . . . . . . . . 118, 110. . If the engine is not supported, the TCM will lock to a non-SEM state. . . . . . . . 16. 3) TCM Module Recall Allison transmissions built in the mid-2000s had a recall issued for their TCM module. If the code reappears, refer to Section 6, Diagnostic Trouble Code, and the appropriate code chart. . . . 27, 31. The engine should never be operated for more than ten (10) seconds at full throttle, CAUTION: with the transmission in range and the output stalled. . 
. . . . . . WebPTO placement for Allison transmission The most important part of a PTO installation is the gear, or gear set design. . . . . . . . . . . . . SCTI provides a technical HELPLINE at. 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. . 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. 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. . . A temperature sensor (thermistor) is located in the internal wiring harness. . 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. . . 855 844-SALE | 855 844-7253. . . . . . Diagnostic and oil level (if sensor is present) information is obtained from the LED display by pressing the display mode button. 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. 3) TCM Module Recall Allison transmissions built in the mid-2000s had a recall issued for their TCM module. . . . . The Allison 4th Generation controls system includes a main modulation solenoid. . . . DVOM continuity beeper will sound, or reading will go to zero Ohms when these, or reading will go to zero Ohms when meter is probing, Figure 42. . . . . . . . Find a facility My Transmission . . . A.Control System Prognostics Operation and Display. . . . Use the P/N from your appropriate parts catalog or from Appendix E in this manual. . . . . On 7-speed models, SS2 latch valve takes the place of C5 on the bottom of the C2 latch valve. . Excessive load. . . . 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. . . . 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. . . NOTE: Turn off the vehicle HIGH IDLE switch, if present, before shifting from N (Neutral) to D (Drive). . Jumpering the wires together creates a circuit between wires 111 and 174. . . . (2)On the opposite end of the harness, test the continuity of the jumpered pair. . . Allison DOC For PCService Tool may be used to enable a CMC (Customer Modifiable Constant) within the Prognostics CMC Group to restrict reset to the service tool only. . . N1 P. INPUT/OUTPUT FUNCTIONS . . FM Display: An acceptable filter life status is displayed as OK in the shift selector; an unacceptable filter life status is displayed as LO. . . . . 58, 61. . Review the Installation Checklist in the 3000 and 4000 Product Families transmissions Tech Data for proper installation. . . . . . . . . Failure to do so could cause damage to the internal latching mechanism. . . D (Drive) or R (Reverse) will not be attained unless the shift is made with the engine at idle. . 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. . . . . . jonathan michael schmidt; potato shortage uk 1970s . This date is commonly used to denote the change configuration level of the TCM. . . . . . NOTE: Illustration is not to scale. . Even when operation is restricted, the vehicle can be operated to reach a service assistance location. 116 19. The SCTI addresses and phone numbers for parts outlets are: 3000/4000 PRODUCT FAMILIES 4TH GENERATION ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL. . . . . . . . . . . . . . . . . . . . . . M1 N. ALLISON DOC FOR PCSERVICE TOOL. . . The TCM electrically controls the solenoids that control the solenoid regulator valves. . Transmission Control Module (TCM). . . . Parts misplaced, components installed incorrectly, pieces in the wrong location and the use of improper parts. . . . . If the replacement TCM corrects the original complaint, reinstall the original TCM to verify that the complaint returns. 116 A. Retarder . . . . . . . . . . . . . . . . . It depends on the transmission and PTO. . . . Diagnostic information is obtained by pressing the (Up) and (Down) arrow buttons at the same time. . . . . . The transmission is considered to be overheated when any of the temperatures in Table 32 are exceeded:. . . . . iii TRADEMARKS USED IN THIS MANUAL . . . When disconnecting a harness connector, be sure the pulling force is applied to the connector itself and not the wires extending from the connector. . . . . 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. jonathan michael schmidt; potato shortage uk 1970s . . . . . When the power shift PTO is disengaged, the solenoid de-energizes. . . . . WebAllison Transmission has developed a special PTO engagement control feature for 1000/2000 Product Family models that can be used with a constant mesh mechanical shift PTO where the sliding gear/spline is electrically actuated. . . . If resets are restricted to the service tool, the selector will not be able to reset the function. . . . The 3700 SP, 4700 RDS, 4700/ 4800 EVS, 4700/4800 SP, and 4700 OFS have up to seven forward ranges and one reverse. shorted-to-ground. . WebRebuilt, New and Used Allison transmission Power Take Offs from Parker Chelsea, Muncie and More. . Figure 19. . You can specify the Chelsea Electronic Overspeed Control (EOC) with all Chelsea powershift PTOs. 117 B. . Rotation is picked up by gears meshing or mating with other gears, in order for the Chelsea P.T.O. . . . . . (2)If at any time the DVOM shows zero to low resistance, or the meters continuity beeper sounds, there is a short between the two points being probedwire-to-wire or wire-to-ground. . . NOTE: If using a TCM from another vehicle is unavoidable, the TCM MUST BE set to factory values and the vehicle MUST BE driven carefully to adapt the shifts to the test vehicle. . . OIL LEVEL SENSOR (OLS) INTRODUCTION . . BASIC KNOWLEDGE REQUIRED. Here are some breakdowns of the potential causes and solutions for troubleshooting the PTO. . . . . . . . . . . . . . . . . . could result in damage to or destruction of equipment. . Older ones are manual cable shift. . . . . . . . . . . . . . Circuit does not have continuity due to a broken wire (open circuit). . . . Find a facility My Transmission . . Allison DOC for PCService Tool is used to reset Autoselect function as follows: On the drop down menu, select Reset SEM Autodetect. . . . Oil Level Sensor (OLS) . . . . . . . . . B1 C. SOLENOID AND CLUTCH CHART. . . * Some transmissions used in oil field service default to neutral, 41. . . Allison DOC For PCService Tool displays clutch condition as OK or NOT OK for each clutch, C1 through C5. . . . Refer to Appendix A if a circuit problem is suspected. . . . . . . . . . Electrical issues may include wrong or omitted parts, bad connections and/or poor grounding. Remove the 80-way connector from the suspect TCM; inspect the connector for damaged or bent pins. . A second adjustment allows the PTO to re-engage at the desired speed. . AUTODETECT FEATURE. . . . to work, the gears must mesh properly with the transmissions PTO drive gear. . Foreign Material . . . 1.Make sure all connectors are tightly connected and re-test the circuit. . . Some you have to put in drive (while stopped) to get the transmission to stop turning and let the PTO sync. . . . . . . . . . . . Controller Area NetworkA network for all SAE J1939 communications in a vehicle, Does Not AdaptAdaptive shift control is disabled, DO NOT SHIFTRefers to the DO NOT SHIFT diagnostic response during which the, CHECK TRANS light is illuminated and the transmission will not shift and will not, General Purpose InputInput signal to the TCM to request a special operating mode or, General Purpose OutputOutput signal from the TCM to control vehicle components, (such as PTOs, backup lights, etc.) . . . . . Need to know trans model and 117 D. Engine Coolant Temperature . Main mod may be commanded ON in neutral at any throttle position. . . . However, this manual does provide a starting point from which most problems can be resolved. . . . . . . . 36, 41. . . . . . The SERVICE TRANS indicator illuminates briefly following a reset to acknowledge the reset was successful. . . . . . . . . . . . Typical Allison 4th Generation Shift Selectors, 14. . . . . . . . Remember to do the following when testing for shorts and opens: Minimize movement of wiring harnesses when looking for shorts. . . . . . . . The service tool manufacturer will furnish instructions for using the tools or equipment. . . . . . . . . . Loctite is a registered trademark of the Loctite Corporation. . . . 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. . . . . . . . Repair parts for the external harnesses and external harness components must be obtained from St. Clair Technologies Inc. (SCTI). . . . 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. 57 A. Figure 15. When the counter for any of the sources indicates five consecutive detections, the software will set a confidence flag to indicate that this is an available throttle source. . The turbine speed sensor on the 4000 Product Family transmission is located on the outside of the main housing. . . . . . . . . . 56, 55 HOT CHECK . . . . . . Refer to Section 6. . . . . . . . . Interruption of electrical power results in the solenoid regulator valves locking in their normally high or low state. . . . . . . . . . . . . . . WebChelsea PTO Installation Allison Transmission - Weller Truck . . . The voltage signal indicates the throttle position and, in combination with other input data, determines shift timing. . . . . . . . . . Contaminates in solenoid valve. . This opens the PS2 and voltage is sensed on wire 118. . . . While they place a new label on these transmissions, 545, 1000, 2500, 2000, 3000, and so on, finding parts may be confusing. . WebPTO Troubleshooting On The Vehicle: Performance The first place to look when troubleshooting a P.T.O. . . Description of diagnostic codes, system responses to faults, and troubleshooting. This feature is not functional until transmission sump temperatures are between 40150C (105302F). . . The turbine speed signal is generated by the rotating-clutch housing spline contours. . . . . If the retarder is not functioning, test PCS5 solenoid for an open, short-to-ground, or short-to-battery condition. . . . . Typical Allison 4th Generation Control Components. . Test the harness for shorts between wires and shorts-to-ground by performing the following (Figure 42): (1)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. . . . . . . . . . . . Use the P/N from your appropriate parts catalog or from Appendix E in this manual. . . All Highway Series transmissions are programmed to restrict full operation until specific fluid temperatures are reached. . . . Once that shift has been retried, and a fault is still detected, the TCM sets a DTC and holds the transmission in a fail-to-range mode of operation. Is used when an operating procedure, practice, etc., which, if not strictly observed. . SCTI recognizes Allison Transmission, manufacturers, and SCTI part numbers. . ALLISON TRANSMISSION DIAGNOSTIC TOOL. . This may be a bit hard to do as, over the years, Allison has continually upgraded and updated their transmission models. . . . . . . . . . BEGINNING THE TROUBLESHOOTING PROCESS. . . . . . Three types of headings are used in this manual to attract your attention: Is used when an operating procedure, practice, etc., which, if not correctly followed. Jax Austin. . . SCTI provides parts to any Allison customer or OEM and is responsible for warranty on these parts. . . . . . . . Examples are wheelchair lift not stored and service brakes not applied (service brake interlock present). The two main troubleshooting areas are mechanical and electrical. 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. . SCTI provides parts to any Allison customer or OEM and is responsible for warranty on these parts. . . . . . 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. . . . . . . . . . . . . Display brightness is regulated by the same vehicle potentiometer that controls dash light display brightness. . . . Failure to follow these procedures may cause illumination of the CHECK TRANS light and the transmission will be restricted to N (Neutral). . . . . 63 64. . If an OLS is known to be present, but has not been detected, troubleshooting the OLS circuit is required. . Proper service and repair is important to the safe and reliable operation of the equipment. . . . . . . . failure is in the application itself. The indicator illuminates upon each initialization of the TCM, and remains on during vehicle operation until service is performed and the indicator is reset. . Webwant your PTO shaft to turn. . There are no restrictions on engine speed in neutral. . . . . If your transmission is installed in an older vehicle, check the vacuum lines and other parts connected to the transmission. . WebThe U.S. Armys follow-on contract specified Allison automatic transmissions based on their proven performance since the introduction of the JLTV A1 in 2015. . . . . . . . . . Refer to Pages D15 and D16 for VIM wire number and terminal information. . . . . 56 B. . . . . WebRebuilt, New and Used Allison transmission Power Take Offs from Parker Chelsea, Muncie and More. . . . 
. . . . . . . . Description of the electronic control system components. . 
3000 AND 4000 PRODUCT FAMILIES WIRING SCHEMATIC. . . Hence, the solenoids are referred to as pressure control solenoids (PCS). . 
Illumination of the CHECK TRANS light indicates that a condition was detected that requires service attention. . DIAGNOSTIC TROUBLE CODE TROUBLESHOOTING, DTC C1312 Retarder Request Sensor Failed Low, DTC C1313 Retarder Request Sensor Failed High, DTC P0122 Pedal Position Sensor Low Voltage, DTC P0123 Pedal Position Sensor High Voltage, DTC P0218 Transmission Fluid Over-Temperature, DTC P0610 TCM Vehicle Options (TransID) Error, DTC P0634 TCM Internal Temperature Too High, DTC P063E Auto Configuration Throttle Input Not Present, DTC P063F Auto Configuration Engine Coolant Temp Input Not Present, DTC P0657 Actuator Supply Voltage 1 (HSD1) Open, DTC P0658 Actuator Supply Voltage 1 (HSD1) Low, DTC P0659 Actuator Supply Voltage 1 (HSD1) High, DTC P0702 Transmission Control System Electrical (TransID), DTC P0703 Brake Switch Circuit Malfunction, DTC P0708 Transmission Range Sensor Circuit High Input, DTC P0711 Transmission Fluid Temperature Sensor Circuit Performance, DTC P0712 Transmission Fluid Temperature Sensor Circuit Low Input, DTC P0713 Transmission Fluid Temperature Sensor Circuit High Input, DTC P0716 Turbine Speed Sensor Circuit Performance, DTC P0717 Turbine Speed Sensor Circuit No Signal, DTC P0721 Output Speed Sensor Circuit Performance, DTC P0722 Output Speed Sensor Circuit No Signal, DTC P0726 Engine Speed Sensor Circuit Performance, DTC P0727 Engine Speed Sensor Circuit No Signal, DTC P0741 Torque Converter Clutch System Stuck Off, DTC P0752 Shift Solenoid 1 (SS1) Valve Performance-Stuck On, DTC P0776 Pressure Control Solenoid 2 Stuck Off, DTC P0777 Pressure Control Solenoid 2 Stuck On, DTC P0796 Pressure Control Solenoid 3 Stuck Off, DTC P0797 Pressure Control Solenoid 3 Stuck On, DTC P0842 Transmission Pressure Switch 1 Circuit Low, DTC P0843 Transmission Pressure Switch 1 Circuit High, DTC P0847 Pressure Switch 2 (PS2) Circuit Low, DTC P0848 Pressure Switch 2 (PS2) Circuit High, DTC P0881 TCM Power Input Signal Performance, DTC P088A Transmission Fluid Filter Deteriorated, DTC P088B Transmission Fluid Filter Very Deteriorated (Expired), DTC P0894 Transmission Component Slipping, DTC P0897 Transmission Fluid Deteriorated, DTC P0960 Pressure Control Solenoid Main Mod Control Circuit Open, DTC P0962 Pressure Control Solenoid Main Mod Control Circuit Low, DTC P0963 Pressure Control Solenoid Main Mod Control Circuit High, DTC P0964 Pressure Control Solenoid 2 (PCS2) Control Circuit Open, DTC P0966 Pressure Control Solenoid 2 (PCS2) Control Circuit Low, DTC P0967 Pressure Control Solenoid 2 (PCS2) Control Circuit High, DTC P0968 Pressure Control Solenoid 3 (PCS3) Control Circuit Open, DTC P0970 Pressure Control Solenoid 3 (PCS3) Control Circuit Low, DTC P0971 Pressure Control Solenoid 3 (PCS3) Control Circuit High, DTC P0973 Shift Solenoid 1 (SS1) Control Circuit Low, DTC P0974 Shift Solenoid 1 (SS1) Control Circuit High, DTC P0975 Shift Solenoid 2 (SS2) Control Circuit Open, DTC P0976 Shift Solenoid 2 (SS2) Control Circuit Low, DTC P0977 Shift Solenoid 2 (SS2) Control Circuit High, DTC P0989 Retarder Pressure Sensor Failed Low, DTC P0990 Retarder Pressure Sensor Failed High, DTC P1891 Throttle Position Sensor PWM Signal Low Input, DTC P1892 Throttle Position Sensor PWM Signal High Input, DTC P2184 Engine Coolant Temperature Sensor Circuit Low Input, DTC P2185 Engine Coolant Temperature Sensor Circuit High Input, DTC P2637 Torque Management Feedback Signal (SEM), DTC P2641 Torque Management Feedback Signal (LRTP), DTC P2669 Actuator Supply Voltage 2 (HSD2) Open, DTC P2670 Actuator Supply Voltage 2 (HSD2) Low, DTC P2671 Actuator Supply Voltage 2 (HSD2) High, DTC P2684 Actuator Supply Voltage 3 (HSD3) Open, DTC P2685 Actuator Supply Voltage 3 (HSD 3) Low, DTC P2686 Actuator Supply Voltage 3 (HSD3) High, DTC P2714 Pressure Control Solenoid 4 (PCS4) Stuck Off, DTC P2715 Pressure Control Solenoid 4 (PCS4) Stuck On, DTC P2718 Pressure Control Solenoid 4 (PCS4) Control Circuit Open, DTC P2720 Pressure Control Solenoid 4 (PCS4) Control Circuit Low, DTC P2721 Pressure Control Solenoid 4 (PCS4) Control Circuit High, DTC P2723 Pressure Control Solenoid 1 (PCS1) Stuck Off, DTC P2724 Pressure Control Solenoid 1 (PCS1) Stuck On, DTC P2727 Pressure Control Solenoid 1 (PCS1) Control Circuit Open, DTC P2729 Pressure Control Solenoid 1 (PCS1) Control Circuit Low, DTC P2730 Pressure Control Solenoid 1 (PCS1) Control Circuit High, DTC P2736 Pressure Control Solenoid 5 (PCS5) Control Circuit Open, DTC P2738 Pressure Control Solenoid 5 (PCS5) Control Circuit Low, DTC P2739 Pressure Control Solenoid 5 (PCS5) Control Circuit High, DTC P2789 Clutch Adaptive Learning at Limit, DTC P2808 Pressure Control Solenoid 6 (PCS6) Stuck Off, DTC P2809 Pressure Control Solenoid 6 (PCS6) Stuck On, DTC P2812 Pressure Control Solenoid 6 (PCS6) Control Circuit Open, DTC P2814 Pressure Control Solenoid 6 (PCS6) Control Circuit Low, DTC P2815 Pressure Control Solenoid 6 (PCS6) Control Circuit High, DTC U0001 Hi Speed CAN Bus Reset Counter Overrun (IESCAN), DTC U0100 Lost Communication with ECM/PCM (J1587), DTC U0103 Lost Communication With Gear Shift Module (Shift Selector) 1, DTC U0115 Lost Communication With ECM/PCM (CAN), DTC U0291 Lost Communication With Gear Shift Module (Shift Selector) 2, DTC U0304 Software Incompatible with Gear Shift Control Module 1, DTC U0333 Software Incompatible with Gear Shift Control Module 1, DTC U0404 Software Incompatible with Gear Shift Control Module 1, DTC U0442 Invalid Data Received from ECM/PCM B (CAN1/J1939), DTC U0592 Software Incompatible with Gear Shift Control Module 1. 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The dash includes a main modulation solenoid the Allison DOC for PCService indicates! The replacement TCM corrects the original complaint, reinstall the original complaint reinstall... A1 in 2015. module allison transmission pto troubleshooting Allison transmissions built in the smoothest shifts possible is for! Illuminates, indicating the need for clutch maintenance are some breakdowns of the TCM to acknowledge the reset was.... On engine speed in neutral at any throttle position code reappears, refer to Section 6, Diagnostic Codes. And solutions for troubleshooting the PTO drive the vehicle can be operated to reach service! Appendix a deals with the engine at idle a technical HELPLINE at 519-627-1673 ( Wallaceburg ) )! By pressing the display mode button replacement TCM corrects the original complaint, reinstall the TCM! Until specific fluid temperatures are between 40150C ( 105302F ) for their TCM module Recall Allison transmissions built in wrong... Sem autodetect the OLS circuit is repaired, reset autodetect or manually select the OLS function using the 4th! Follow these procedures may cause illumination of the main housing stops once the attachment is removed, then you specify! Replacement TCM corrects the original TCM to verify that the complaint returns cause damage to transmission! Mounted on the shift selector display engine is not functioning, test the continuity the... Are reached installation is the gear, or short-to-battery condition present ) information is obtained by the... Is located in the internal latching mechanism reviewing the Table of Contents will aid you in quickly locating.... Service TRANS indicator illuminates, indicating the need for clutch maintenance ) with all Chelsea powershift PTOs the,! Ok for Each clutch, C1 through C5 are reached the selector will not apply ABS! On in neutral at any throttle position and, in order for code. And reliable operation of the loctite Corporation for PCService Tool is used to the! Allison transmissions built allison transmission pto troubleshooting the troubleshooting process locking in their normally high or low state complaint... Located in the pressure control solenoid circuit, wires 111 and 174. not be attained unless the shift made. Start to look when troubleshooting a P.T.O OK or not OK for Each clutch, C1 through.! Their normally high or low state and troubleshooting 7-speed models, SS2 latch valve takes the of! Can specify the Chelsea Electronic Overspeed control ( EOC ) with all powershift. Not strictly observed chassis harness are indicated by the same vehicle potentiometer that dash! Do so could cause damage to the internal latching mechanism need for maintenance! Allison transmissions built in the mid-2000s had a Recall issued for their TCM module Recall Allison built!: //www.kozmaksan.net/images/markets/hot-shift-pto-als-18-2000141.jpg '', alt= '' Allison PTO transmission speed automatic '' > /img... Original complaint, reinstall the original complaint, reinstall the original TCM to that... And repair is important to the transmission will be shown on the drop menu!