. . 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. ABBREVIATIONS . . . . . . . . . Weak trimmer valves and leaking forward clutch seals may cause excessive engine flares. . Be sure that the TCM case is not contacting the vehicle or any other point that might provide a ground connection. . This date is commonly used to denote the change configuration level of the TCM. . Take time to review the Table of Contents and the manual. . . approximately 10 percent or the running clearance exceeds a maximum value, which may indicate a non-wear-related issue. . BEGINNING THE TROUBLESHOOTING PROCESS, 3-7. . . . Shorts involve. . . . . . . . . . Stop the vehicle and inspect the cooling system. . . . . . . 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. . . . . 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). . Changes in sump fluid temperature are indicated by changes in sensor resistance, which changes the signal sent to the TCM. When C5 clutch is applied, C5 pressure acts on the bottom of the C2 latch valve and keeps it in the up position. . . Use the gray-colored 150 Series Metripack, CAUTION: Flexible Male Connector probe contained in Jumper Wire Kit J 39197 or J 39197-A when testing the TCM and transmission mating connectors. . . Displays o, L; o, K, etc. . . The SCTI addresses and phone numbers for parts outlets are: 3000/4000 PRODUCT FAMILIES 4TH GENERATION ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL. . . . . . . . This simulates vehicle movements which occur during actual operation. . . . . . . . . Certain models of the upcoming 2020 GM HD trucks with the all-new 10-speed Allison transmission will feature a Power Take-Off (PTO) function. . . . . . . . . Allison Transmission could not possibly know, evaluate, or advise the service trade of all conceivable procedures by which service might be performed or of the possible hazardous consequences of each procedure. Allison PTO: Transmission Power Takeoff, Hydraulic Pump and Repair. NOTE: Error messages, sudden disconnections, and poor performance are some of the results users will experience if Allison DOC For PC-Service Tool V7.x.x is installed on PCs that do not meet one or more of the above specifications. . 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. . . . . . If the complaint does not return, leave the original TCM installed. . . . . . . . . . . . . . Autodetect takes place within the first 30 seconds of each engine start monitored. . . . . . . . . However, you may actually be experiencing a failsafe instead. Reset by using the specific Action Request in the Allison DOC For PCService Tool . Description of the electronic control system components. . Welcome to the TS3989EN Troubleshooting Manual. . . 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. . . . . . . . TRANSMISSION CONTROL MODULE (TCM) . . . The code display procedure will indicate the number of times the DTC has occurred. . Other CMCs can be changed at any time and are not related to autodetect. . Be sure the transmission model matches the calibration in the TCM. Even if the vehicle is moving. . . .P1 Q. THERMISTOR TROUBLESHOOTING INFORMATION . Whenever a transmission is overhauled, exchanged, or has undergone internal repairs, the TCM MUST. . . . . . 8 o'clock position: 1.00 x engine speed. . . . . . . . . . . . Care should be taken when welding on a vehicle equipped with electronic controls. . . 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). . . 14 A. Pushbutton Shift Selector . . . . . . . . . . . We make every effort to keep our service information current and accurate. . . . . SPEED SENSORS. . . But things may go wrong rather unexpectedly. . Microsoft Media Player bundled on the CD for displaying various and updated training videos (available from the application Help menu). . Whenever a TID level change is to be made, the new TID level calibration will be added to the PROM Calibration Configurator System (PCCS) before the change (s) is (are) made in production to the transmissions. . . . . . . . Determine if DTCs have set by: Using the shift selector display (see Paragraph. . . . . Allison DOC For PCService Tool displays NA until transmission shifts are adapted. . . . . . . . . Typical Allison 4th Generation Shift Selectors, 14. Hit the up and down arrows a 2nd time. . . . . . . . . The new Allison 10-speed isn't actually made by the familiar Indianapolis-based engineering firm. . . . Retarder and engine brakes will not apply when ABS is active. . . . . 13 13. . Allison 4th Generation Control Mudules with Prognostics. . Every possible problem and its solution cannot be encompassed by any manual. . . . . . . . . . . K1 L. EXTERNALLY-GENERATED ELECTRONIC INTERFERENCE. The diagnostic pressure switch PS1 is mounted on the solenoid valve body assembly and performs the following two functions: When the C5 clutch is filled, PS1 senses the PCS2 solenoid regulator valve position to verify proper C3 clutch control in reverse, neutral, and first range. (2)On the opposite end of the harness, test the continuity of the jumpered pair. Make sure all updates listed in this section and all other requirements are met prior to using the Prognostics features. . . We make every effort to keep our service information current and accurate. requiring 400 to 2400 horsepower engines. . . . . . HYDRAULIC OPERATION DURING ELECTRICAL INTERRUPTION, 4-2. . . Allison DOC For PCService Tool displays from 100 percent down to minus () 100 percent. . . . To install pto and wire in switch. . . . . . . . . . . USING THE TROUBLESHOOTING MANUAL. . . . . . . . .E1, TOOL PART NUMBERS, AND REPAIR INSTRUCTIONS, F. THROTTLE POSITION SENSOR ADJUSTMENT . . . . . . It depends on the transmission and PTO. Allison 4th Generation Control functions are controlled by the TCM. NOTE: Illustration is not to scale. . . . . 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. . . ALLISON TRANSMISSION_TS3977EN_Troubleshooting Manual 4th Gen 1000 & 2000 Prod Fam - Free ebook download as PDF File (.pdf), Text File (.txt) or read book online for free. . . . . 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. . . . . . . If necessary, the indicator can be manually reset using the Allison DOC For PCService Tool diagnostics program. . . The N (Neutral) button has a raised lip to aid in finding it by touch. . Replace PTO housing, gears. No continuity in a jumpered pair circuit (infinite resistance reading) indicates an open in the wire being tested. . . . Allison Transmission is the worlds largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles and is a leader in hybrid-propulsion systems for city buses. . . . The continuous torque rating of the Chelsea 870 Series powershift PTO allows you to . . . . . . We ship from the USA to . . This opens the PS2 and voltage is sensed on wire 118. . . . . . . . . Granted things a very busy right now at these sort of shops. . . . VIMs are available for both 12V and 24V electrical systems. . . . . . . . Re-install shift cover. . . . . . . . . . Elkton, Maryland 21921. . . IMPORTANT INFORMATION IN THE TROUBLESHOOTING PROCESS, 3-5. . DTCs displayed after system power is turned on with a harness connector disconnected, can be ignored and cleared from memory. . . . . . . . 5.If difficulties arise, you have unanswered questions, or if you are unable to quickly identify the root cause during troubleshooting, please contact the Technical Assistance Center (TAC): Technical Assistance Center PO Box 894, Mail Code A01 Indianapolis, IN 46206-0894 Phone: 1-800-252-5283. . The Diagnostic Trouble Code section lists DTCs and their description. . . Do troubleshooting at the temperature level where the problem occurs. . . . . . . . . . . . . . clutches are applied to lock the transmission output. . . . . . Unfortunately, a driver can't reverse limp mode. will last you a very long time with few problems. The SCTI addresses and phone numbers for parts outlets are: SCTI is the source for external harness repair parts. . . . . The engine must be compatible with the transmission rating. . . . . . . NOTE: The Filter Life Monitor triggers the SERVICE TRANS icon following a reset if the Filter Life indicator switch reopens. . . . . . . . . Typical Allison 4th Generation Control Components. . . . . . . . . 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). . . . . . . 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. . . . . . . . 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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