. . . . . . If the rating is correct for the transmission, perform the following steps. . . .

. DEXRON is a registered trademark of General Motors Corporation. . . . .

This momentary lighting shows the light circuit is working properly.

. . . IMPORTANT INFORMATION IN THE TROUBLESHOOTING PROCESS, 3-5. Menu. . The Allison DOC For PCService Tool is a full-feature diagnostic software application supporting the Allison 4th Generation Control System. . . . . . The engine must be compatible with the transmission rating. . . .

. clutches are applied to lock the transmission output. . . The two main troubleshooting areas are mechanical and electrical. . . . . Table 33 lists the operating range and pre-determined default range the transmission will shift to in the event of an electrical interruption.

. Even when operation is restricted, the vehicle can be operated to reach a service assistance location. .

Need to know trans model and 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. . . . . 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.

. 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. . . . When the main filter gets excessively restricted by debris, lockup pressure drops. . . . . . DIAGNOSTIC CODE LIST AND DESCRIPTION . . . . . . . Display the Oil Life Monitor information and press and hold the MODE button of the Allison shift selector for 10 seconds.

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. . . . . . . . . . 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. . . . . . Should be information from Muncie and Chelsea PTO's on line. . . . .

. . PTO engages but does not produce specified output speed. . . . . . . . . . . . . . . . . . . . . There is a hold override button which must be pressed and held in order to move between certain selector positions. . . . . The sensor operates on. . 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.

. It depends on the transmission and PTO. . Throttle percentage less than 15 percent in reverse, low (7-speed), first, or second range. . . . . . . . . . . . .

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. . iv, 11. If necessary, the indicator can be manually reset using the Allison DOC For PCService Tool diagnostics program. . . . . . shorted-to-ground. 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. . . . . . . .

NVL is, attained by turning D solenoid ON (in addition to E solenoid) and the C4 and C5. . . . . . . . . D1, E.CONNECTOR PART NUMBERS, TERMINAL PART NUMBERS, . . . . . . . . . . From there, air is released to atmosphere through a valve, and hydraulic fluid exhausts into the PTO. . MEASURING CLUTCH AND RETARDER PRESSURES . . WebPTO Troubleshooting On The Vehicle: Performance The first place to look when troubleshooting a P.T.O. . . The strip pushbutton shift selector does not have a MODE button, diagnostic capability, or adjustable illumination. . . . . . . . . . . . The Allison 4th Generation Controls feature closed-loop clutch control to provide superior shift quality over a wide range of operating conditions. b.If the continuity test is good (02 Ohms resistance), remove the jumpers.
A temperature sensor (thermistor) is located in the internal wiring harness. . . . . . . .

. . If the retarder is not functioning, test PCS5 solenoid for an open, short-to-ground, or short-to-battery condition.

. . . . . . . . . If the problem recurs, proceed with Step (4). A retarder will be identified as present and the retarder autodetect logic will stop once it is detected for three consecutive ignition cycles. . . . . . . . . . . . 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. . . . . . . . . . . NOTE: Once TCM Autoselect locks, the only way to reactivate is to perform a reset procedure (refer to Paragraph 38). . . Webwant your PTO shaft to turn. . . . Autodetect takes place within the first 30 seconds of each engine start monitored. .

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Jax Austin. .

. . . . . . . Have transmission inspected by authorized Ford dealer. . Webwant your PTO shaft to turn. . .E1, TOOL PART NUMBERS, AND REPAIR INSTRUCTIONS, F. THROTTLE POSITION SENSOR ADJUSTMENT . . . . . . . It is necessary to determine why a problem occurred. . . . . All TCMs programmed and sold after that date will be loaded with the new TID calibration.

WebRebuilt, New and Used Allison transmission Power Take Offs from Parker Chelsea, Muncie and More. . The electronic control of the transmission is performed by a microcomputer. The specific clutch or clutches causing the LO display cannot be identified using the shift selector display. . . Transmission Ranges D (Drive), N (Neutral), R (Reverse), 1 (First), 2 (Second), etc. . . . . .

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. . . . . . 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). . . . . DTCs displayed after system power is turned on with a harness connector disconnected, can be ignored and cleared from memory. . .

. . . When SS1 is energized, control main pressure flows to the top of C1 and C2 latch valves. Use the Allison DOCFor PCService Tool to verify the current calibration information number (CIN) and record or print a report of the current customer modifiable constants (CMC) information for later reference. . . . . . Find a facility My Transmission . . . . . . . . Multiple sources can be detected on a single engine start cycle. . . . Both upshifts and downshifts may be restricted when the CHECK TRANS light is illuminated.

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. . . . . . . . . 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. Begin troubleshooting by determining the transmission fluid level and TCM input voltage. . . . . . .

. Disconnecting and reconnecting the TCM can often correct faulty wiring harness connections that may have been present. . . . . . . . . . . . . . .

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. . . . . . . . Reset by using the specific Action Request in the Allison DOC For PCService Tool .

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. . . . If the replacement TCM corrects the original complaint, reinstall the original TCM to verify that the complaint returns. . 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. 1.Make sure all connectors are tightly connected and re-test the circuit. . 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. ALLISON TRANSMISSION DIAGNOSTIC TOOL. . . . .

. Allison Transmission is responsible for warranty on these parts. . . . . . The lamp strategy for the icon varies, either flashing, or steady, to indicate to the operator which function detected the threshold value was reached. . . . . 55, 54. . . . . . From there, air is released to atmosphere through a valve, and hydraulic fluid exhausts into the PTO. . . Refer to SIL 16-WT-96 for the correct procedure. . Also, many different styles and materials for harnesses are likely to be encountered. Appendix A deals with the identification of potential circuit problems. .

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. . . . . 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. . . . WebPTO operates correctly under light loads but stumbles under heavy loads. . Minimum value displayed is 00 percent. . Internet connection capability with Internet Explorer 5.0.1 or greater. .

Allison DOC For PCService Tool indicates the Filter Life Monitor expired as YES or NO. . . . . . WebAllison Transmission MT643 Disassembly + Diagnosis for REBUILD. . WebAllison AT545 Transmission Parts Breakdown. Refer to the appropriate service manual for valve locations.

. Specific instructions for using many of the available or required service tools and equipment are not included in this manual. Autoselect is deactivated following the first 20 engine starts where engine and transmission communication are present. . . . To shift from reverse to forward, select N (Neutral) and then D (Drive) or other forward range. The TCM monitors the OLS input voltage on wire 116. . . Some OEMs may provide their own equivalent for the VIM which performs the same functions as the VIM shown in Figure 112. . . . . Description of the 3000 and 4000 Product Families Allison 4. . . . . . . .

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. 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. . . . Torque converter not in lock-up mode. . . . . . . . . . . . . . . . . Allison 4th Generation Control Mudules with Prognostics. . . . Thoroughly clean corroded or dirty terminals. . . . . . . . . . . After the OLS circuit is repaired, reset autodetect or manually select the OLS function using the Allison DOC For PCService Tool. . . . . Check with your Allison Transmission service outlet for the currently applicable publication. . . . . . . The code display procedure will indicate the number of times the DTC has occurred. . Some procedures require using specially designed tools. . . . . 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. . . Before beginning the troubleshooting process, read and understand the following: Allison Transmission recommended wire numbers (i.e.

. . . The TCM may activate the main mod solenoid for improved clutch control and transmission response during other unusual operating situations. . . .

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. . . 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).