41TE Automatic Transmision - Service Information: Overview Dodge Journey I

Scheme 269

The 41TE is a four-speed transaxle that is a conventional hydraulic/mechanical assembly with an integral differential, and is controlled with adaptive electronic controls and monitors. The hydraulic system of the transaxle consists of the transaxle fluid, fluid passages, hydraulic valves, and various line pressure control components. An input clutch assembly which houses the underdrive, overdrive, and reverse clutches is used. It also utilizes separate holding clutches: 2nd/4th gear and Low/Reverse. The primary mechanical components of the transaxle consist of the following

1. Three multiple disc input clutches
2. Two multiple disc holding clutches
3. Four hydraulic accumulators
4. Two planetary gear sets
5. Hydraulic oil pump
6. Valve body
7. Solenoid/Pressure switch assembly
8. Integral differential assembly

Control of the transaxle is accomplished by fully adaptive electronics. Optimum shift scheduling is accomplished through continuous real-time sensor feedback information provided to the Powertrain Control Module (PCM) or Transmission Control Module (TCM).

The PCM/TCM is the heart of the electronic control system and relies on information from various direct and indirect inputs (sensors, switches, etc.) to determine driver demand and vehicle operating conditions. With this information, the PCM/TCM can calculate and perform timely and quality shifts through various output or control devices (solenoid pack, transmission control relay, etc.).

The PCM/TCM also performs certain self-diagnostic functions and provides comprehensive information (sensor data, DTC's, etc.) which is helpful in proper diagnosis and repair. This information can be viewed with the scan tool.

Scheme 270

The 41TE transaxle is identified by a barcode label (1) that is fixed to the transaxle case.

Scheme 271

The label contains a series of digits that can be translated into useful information such as transaxle part number, date of manufacture, manufacturing origin, plant shift number, build sequence number, etc. (Scheme 271)for identification label breakdown.

If the tag is not legible or missing, the "PK" number, which is stamped into the transaxle case behind the transfer gear cover, can be referred to for identification. This number differs slightly in that it contains the entire transaxle part number, rather than the last three digits.

OPERATION

Transmission output is directed to an integral differential by a transfer gear system in the following input-to-output ratios

The function of an accumulator is to cushion the application of a frictional clutch element. When pressurized fluid is applied to a clutch circuit, the application force is dampened by fluid collecting in the respective accumulator chamber against the piston and spring(s). The intended result is a smooth, firm clutch application.

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1. Mount input clutch assembly (3) to Input Clutch Pressure Fixture Tool 8391.
2. Tap down reverse clutch reaction plate (4) to release pressure from snap ring (2). 1 - REACTION PLATE 2 - SCREWDRIVER 3 - REVERSE CLUTCH SNAP RING (SELECT)
3. Remove reverse clutch snap ring (3). 1 - REVERSE CLUTCH REACTION PLATE 2 - SCREWDRIVER 3 - SCREWDRIVER
4. Pry up and remove reverse clutch reaction plate (1). 1 - SNAP RING 2 - REACTION PLATE 3 - CLUTCH DISC (2) 4 - CLUTCH PLATE (1) 5 - INPUT CLUTCH ASSEMBLY
5. Remove reverse clutch pack (3,4). Tag components for assembly identification. 1 - SNAP RING 2 - OD/REVERSE PRESSURE PLATE 3 - SNAP RING (WAVE) 4 - CLUTCH DISC (4) 5 - CLUTCH STEEL (3) 6 - INPUT CLUTCH ASSEMBLY
6. Remove the OD/Reverse pressure plate snap ring (1).
7. Remove OD/Reverse pressure plate (2).
8. Remove OD/Reverse pressure plate wave snap ring (3).
9. Remove OD clutch pack (4,5). Tag components for assembly identification. 1 - OVERDRIVE SHAFT 2 - #3 THRUST PLATE (3 TABS) 3 - #3 THRUST WASHER (5 TABS) 4 - UNDERDRIVE SHAFT 5 - #2 NEEDLE BEARING (3 TABS) 6 - INPUT CLUTCH ASSEMBLY
10. Remove and inspect OD (1) and UD Shafts (4), as well as #3 thrust washer and plate (2, 3), and #2 needle bearing (5). 1 - SNAP RING (TAPERED) 2 - OD/UD REACTION PLATE 3 - CLUTCH DISC 4 - SNAP RING (FLAT) 5 - CLUTCH PLATE 6 - INPUT CLUTCH ASSEMBLY
11. Remove the OD/UD reaction plate tapered snap ring (1), clutch plate (5), and first clutch disc (3).
12. Remove the UD clutch flat snap ring (4) and rest of the input clutch assembly (6). Tag clutch pack for assembly identification. 1 - SNAP RING PLIERS 2 - ARBOR PRESS RAM 3 - SNAP RING 4 - COMPRESSOR 5059-A CAUTION: Compress return spring just enough to remove or install snap ring.
13. Using compressor 5059-A (4) and an arbor press (2), compress UD clutch piston/spring enough to remove snap ring (3). 1 - SNAP RING 2 - SPRING RETAINER 3 - SPRING 4 - UD CLUTCH PISTON 5 - SEAL, OUTER 6 - SEAL, INNER 7 - INPUT CLUTCH ASSEMBLY
14. (Scheme 280)as necessary when performing the following steps
15. Remove spring retainer (2), spring (3), and UD clutch piston (4). 1 - INPUT SHAFT 2 - INPUT HUB SNAP RING (TAPERED SIDE UP WITH TABS IN CAVITY) 3 - SNAP RING PLIERS
16. Remove input hub tapered snap ring (2). 1 - INPUT SHAFT AND HUB ASSEMBLY 2 - SOFT FACED HAMMER
17. Tap on input hub with soft faced hammer (2) and separate input hub from OD/Reverse piston and clutch retainer. 1 - OVERDRIVE/REVERSE PISTON 2 - INPUT CLUTCHES RETAINER
18. Separate clutch retainer (2) from OD/Reverse piston (1). 1 - ARBOR PRESS RAM (COMPRESS RETURN SPRING JUST ENOUGH TO REMOVE OR INSTALL SNAP RING) 2 - SCREWDRIVER 3 - SNAP RING 4 - Disk 6057 5 - OD/REVERSE PISTON 6 - RETURN SPRING
19. Using Disk 6057 (4) and an arbor press (1), compress return OD/Reverse piston return spring just enough to remove snap ring (3). 1 - INPUT SHAFT 2 - SHARP-POINTED TOOL 3 - SNAP RING 4 - O-RINGS 5 - SEALS
20. Remove input shaft to input clutch hub snap ring (3). 1 - ARBOR PRESS RAM 2 - SOCKET 3 - SEAL 4 - O-RINGS 5 - INPUT SHAFT 6 - SEAL 7 - INPUT SHAFT HUB ASSEMBLY
21. Using a suitably sized socket (2) and an arbor press (1), remove input shaft (5) from input shaft hub (7). 1 - SNAP RING (INPUT SHAFT) 2 - SNAP RING 3 - CLUTCH RETAINER 4 - SEAL, OUTER 5 - SEAL, INNER 6 - OD/REVERSE PISTON 7 - SEAL, INPUT SHAFT 8 - SHAFT, INPUT 9 - HUB 10 - SEAL 11 - SNAP RING 12 - BELLEVILLE SPRING
22. (Scheme 287)as necessary when performing the above steps

Scheme 288

Use petrolatum on all seals to ease assembly of components.

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1. Using an arbor press (2), install input shaft (1) to input shaft hub (3). 1 - INPUT SHAFT 2 - SCREWDRIVER (DO NOT SCRATCH BEARING SURFACE) 3 - SNAP RING 4 - O-RINGS 5 - SEALS
2. Install input shaft snap ring (3). 1 - OD/REVERSE PISTON 2 - RETURN SPRING 3 - SNAP RING 4 - O-RING
3. Place OD/Reverse piston (1) return spring (2) and snap ring (3) into position. 1 - ARBOR PRESS RAM (COMPRESS RETURN SPRING JUST ENOUGH TO REMOVE OR INSTALL SNAP RING) 2 - SCREWDRIVER 3 - SNAP RING 4 - Disk 6057 5 - OD/REVERSE PISTON 6 - RETURN SPRING
4. Using an arbor press (1) and Disk 6057 (4), install OD/Reverse piston (5) return spring (6) and snap ring (3). 1 - PUSH DOWN TO INSTALL OVERDRIVE/REVERSE PISTON 2 - INPUT CLUTCHES RETAINER
5. Install the OD/Reverse piston assembly (1) to the input clutch retainer (2). 1 - PUSH DOWN TO INSTALL INPUT SHAFT HUB ASSEMBLY (ROTATE TO ALIGN SPLINES) 2 - OD/REV. PISTON
6. Install the input hub/shaft assy. (rotate to align splines) (1) to the OD/Reverse piston/clutch retainer assy. (2). 1 - SNAP RING (INPUT SHAFT) 2 - SNAP RING 3 - CLUTCH RETAINER 4 - SEAL, OUTER 5 - SEAL, INNER 6 - OD/REVERSE PISTON 7 - SEAL, INPUT SHAFT 8 - SHAFT, INPUT 9 - HUB 10 - SEAL 11 - SNAP RING 12 - BELLEVILLE SPRING
7. see scheme 230as necessary when performing the following steps. 1 - INPUT SHAFT 2 - INPUT HUB SNAP RING (TAPERED SIDE UP WITH TABS IN CAVITY) 3 - SNAP RING PLIERS
8. Install input hub tapered snap ring (tapered side up with tabs in cavity) (2). 1 - PISTON
9. Install UD clutch piston (1). 1 - PISTON RETURN SPRING 2 - INSTALLER 5067 3 - INPUT SHAFT CLUTCHES RETAINER ASSEMBLY
10. Install UD piston return spring (1) and Installer 5067 (2). 1 - SNAP RING 2 - SPRING RETAINER 3 - SPRING 4 - UD CLUTCH PISTON 5 - SEAL, OUTER 6 - SEAL, INNER 7 - INPUT CLUTCH ASSEMBLY
11. (Scheme 296)as necessary when performing the following steps. 1 - UNDERDRIVE SPRING RETAINER 2 - SNAP RING 3 - SEAL 4 - PISTON RETURN SPRING
12. Place the UD spring retainer (1) and snap ring (2) into position. 1 - ARBOR PRESS RAM 2 - SNAP RING PLIERS 3 - SNAP RING 4 - OD/REVERSE PISTON 5 - INSTALLER 5067 6 - COMPRESSOR 5059-A
13. Using Compressor 5059-A (6) and an arbor press (1), Install the UD spring retainer and snap ring (3) Compress just enough to install snap ring (3). CAUTION: Compress return spring just enough to install snap ring. 1 - CLUTCH PLATE 2 - ONE UD CLUTCH DISC 3 - CLUTCH DISC
14. Install the UD clutch pack (1,3). Leave out upper disc (2), until snap ring is installed. 1 - UNDERDRIVE CLUTCH REACTION PLATE FLAT SNAP RING 2 - SCREWDRIVER
15. Install the UD clutch flat snap ring (1). 1 - ONE UNDERDRIVE CLUTCH DISC
16. Install the last UD clutch disc (1). 1 - OD/UD CLUTCH REACTION PLATE (TAPERED STEP SIDE UP)
17. Place the OD/UD clutch reaction plate (1) and snap ring into position. The OD/UD clutches reaction plate has a step on both sides. Install the OD/UD clutches reaction plate tapered step side up. 1 - OVERDRIVE/UNDERDRIVE CLUTCHES REACTION PLATE TAPERED SNAP RING 2 - SCREWDRIVER (DO NOT SCRATCH REACTION PLATE)
18. Install the snap ring (1) using a screwdriver (2). NOTE: Snap ring ends must be located within one finger of the input clutch hub. Be sure that snap ring is fully seated, by pushing with screwdriver, into snap ring groove all the way around. 1 - SNAP RING (TAPERED) 2 - OD/UD REACTION PLATE 3 - CLUTCH DISC 4 - SNAP RING (FLAT) 5 - CLUTCH PLATE 6 - INPUT CLUTCH ASSEMBLY
19. see scheme 242as necessary when performing the following steps. 1 - OVERDRIVE/UNDERDRIVE CLUTCHES REACTION PLATE TAPERED SNAP RING 2 - SCREWDRIVER
20. Seat tapered snap ring (1) to ensure proper installation. 1 - INPUT CLUTCH ASSEMBLY 2 - INPUT CLUTCH PRESSURE FIXTURE 8391
21. Install input clutch assembly (1) to the Input Clutch Pressure Fixture 8391 (2). 1 - DIAL INDICATOR 2 - UNDERDRIVE CLUTCH
22. Set up dial indicator (1) on the UD clutch pack (2). 1 - DIAL INDICATOR 2 - UNDERDRIVE CLUTCH
23. Using moderate pressure, press down and hold (near indicator) the UD clutch pack (2) with screwdriver or suitable tool and zero dial indicator. When releasing pressure on clutch pack, indicator reading should advance 0.005-0.010. CAUTION: Do not apply more than 30 psi (206 kPa) to the underdrive clutch pack.
24. Apply 30 psi (206 kPa) to the underdrive hose on Input Clutch Pressure Fixture 8391 and measure UD clutch clearance. Measure and record UD clutch pack measurement in four places, 90° apart.
25. Take average of four measurements and compare with UD clutch pack (2) clearance specification. Underdrive clutch pack clearance must be 0.94-1.50 mm (0.037-0.059 in.).
26. If necessary, select the proper reaction plate to achieve specifications: UNDERDRIVE REACTION PLATE THICKNESS 4659939AB 5.837-5.937 mm (0.230-0.234 in.) 4659940AB 6.147-6.248 mm (0.242-0.246 in.) 4659941AB 6.457-6.557 mm (0.254-0.258 in.) 1 - OVERDRIVE CLUTCH PACK
27. Install the OD clutch pack (four frictions/three steels) (1). 1 - OVERDRIVE PRESSURE PLATE WAVED SNAP RING 2 - SCREWDRIVER
28. Install OD pressure plate waved snap ring (1). 1 - OVERDRIVE/REVERSE PRESSURE PLATE 2 - (STEP SIDE DOWN)
29. Install the OD/Reverse pressure plate (1) with large step down (towards OD clutch pack) (2). 1 - SNAP RING 2 - OD/REVERSE PRESSURE PLATE 3 - SNAP RING (WAVE) 4 - CLUTCH DISC (4) 5 - CLUTCH STEEL (3) 6 - INPUT CLUTCH ASSEMBLY
30. see scheme 250as necessary when performing the following steps. 1 - ARBOR PRESS RAM 2 - COMPRESSOR 5059-A 3 - FLAT SNAP RING
31. Install OD pressure plate flat snap ring (3). 1 - DIAL INDICATOR 2 - OD/REVERSE REACTION PLATE
32. Measure OD clutch pack clearance. Set up dial indicator (1) on top of the OD/Reverse pressure plate.
33. Zero dial indicator and apply 30 psi (206 kPa) air pressure to the overdrive clutch hose on Tool 8391. Measure and record OD clutch pack measurement in four places, 90° apart.
34. Take average of four measurements and compare with OD clutch pack clearance specification. The overdrive (OD) clutch pack clearance is 1.07-3.25 mm (0.042-0.128 in.).
35. Install reverse clutch pack (two frictions/one steel) (1,2). 1 - REVERSE CLUTCH REACTION PLATE (FLAT SIDE DOWN)
36. Install reverse clutch reaction plate with the flat side down towards reverse clutch. 1 - SNAP RING 2 - REACTION PLATE 3 - CLUTCH DISC (2) 4 - CLUTCH PLATE (1) 5 - INPUT CLUTCH ASSEMBLY
37. see scheme 254as necessary when performing the following steps. 1 - REVERSE CLUTCH SNAP RING (SELECT) 2 - SCREWDRIVER 3 - REVERSE CLUTCH REACTION PLATE
38. Tap reaction plate (3) down to allow installation of the reverse clutch snap ring (1) Install reverse clutch snap ring (1). 1 - SCREWDRIVER 2 - SNAP RING 3 - SCREWDRIVER 4 - MUST RAISE REVERSE REACTION PLATE TO RAISE SNAP RING
39. Pry up reverse reaction plate (4) to seat against snap ring (2). 1 - DIAL INDICATOR 2 - REVERSE CLUTCH
40. Set up a dial indicator (1) on the reverse clutch pack (2). 1 - DIAL INDICATOR 2 - REVERSE CLUTCH
41. Using moderate pressure, press down and hold (near indicator) reverse clutch disc (2) with screwdriver or suitable tool and zero dial indicator (1). When releasing pressure, indicator should advance 0.005-0.010. as clutch pack relaxes.
42. Apply 30 psi (206 kPa) air pressure to the reverse clutch hose on Input Clutch Pressure Fixture 8391. Measure and record reverse clutch pack measurement in four places, 90° apart.
43. Take average of four measurements and compare with reverse clutch pack clearance specification. The reverse clutch pack clearance is 0.89-1.37 mm (0.035-0.054 in.). Select the proper reverse clutch snap ring to achieve specifications: REVERSE CLUTCH SNAP RING THICKNESS 4377195 1.53-1.58 mm (0.060-0.062 in.) 4412871 1.77-1.83 mm (0.070-0.072 in.) 4412872 2.02-2.07 mm (0.080-0.082 in.) 4412873 2.27-2.32 mm (0.090-0.091 in.)
44. To complete the assembly, reverse clutch and overdrive clutch must be removed.
45. Install the #2 needle bearing (note 3 small tabs up) (1). 1 - UNDERDRIVE SHAFT ASSEMBLY 2 - #2 NEEDLE BEARING
46. Install the underdrive shaft assembly (1). 1 - #3 THRUST WASHER (NOTE 5 TABS) 2 - UNDERDRIVE SHAFT ASSEMBLY
47. Install the #3 thrust washer (1) to the underdrive shaft assembly (2). Be sure five tabs are seated properly. 1 - OVERDRIVE SHAFT ASSEMBLY 2 - DABS OF PETROLATUM (FOR RETENTION) 3 - #3 THRUST PLATE (NOTE 3 TABS)
48. Install the #3 thrust plate (3) (note 3 tabs) to the bottom of the overdrive shaft assembly (1). Retain with petrolatum or transmission assembly gel (2). 1 - OVERDRIVE SHAFT 2 - #3 THRUST PLATE (3 TABS) 3 - #3 THRUST WASHER (5 TABS) 4 - UNDERDRIVE SHAFT 5 - #2 NEEDLE BEARING (3 TABS) 6 - INPUT CLUTCH ASSEMBLY
49. see scheme 262as necessary when performing the following steps. 1 - OVERDRIVE SHAFT ASSEMBLY 2 - #3 THRUST PLATE 3 - #3 THRUST WASHER
50. Install the overdrive shaft assembly (1).
51. Reinstall overdrive and reverse clutch as shown. Rechecking these clutch clearances is not necessary.

Scheme 321

The Solenoid/Pressure Switch Assembly (1) is external to the transaxle and mounted to the transaxle case. The assembly consists of four solenoids that control hydraulic pressure to the LR/CC, 2/4, OD, and UD friction elements. The reverse clutch is controlled by line pressure from the manual valve in the valve body. The solenoids are contained within the Solenoid/Pressure Switch Assembly, and can only be serviced by replacing the assembly.

The solenoid assembly also contains pressure switches that monitor and send hydraulic circuit information to the PCM/TCM. Likewise, the pressure switches can only be service by replacing the assembly.

The three input clutches are responsible for driving different components of the planetary geartrain.

Note. Refer to ELEMENTS IN USE AT EACH POSITION OF SELECTOR LEVER for a collective view of which clutch elements are applied at each position of the selector lever.

The differential assembly is driven by the transfer shaft by way of the differential ring gear. The ring gear drives the differential case, and the case drives the driveshafts through the differential gears. The differential pinion and side gears are supported in the case by thrust washers and a pinion shaft. Differential pinion and side gears make it possible for front tires to rotate at different speeds while cornering.

Scheme 322

Note. The transfer shaft should be removed for differential repair and bearing turning torque checking.

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1. Remove the differential cover and bolts (1) . 1 - DIFFERENTIAL RETAINER BOLTS
2. Remove the differential bearing retainer bolts (1) . 1 - DIFFERENTIAL BEARING RETAINER 2 - BEARING PULLER L-4435
3. Remove the differential bearing retainer (1) using Bearing Puller L-4435 (2). 1 - ADAPTOR C-4996 (NOTE POSITION) 2 - DIAL INDICATOR SET 3 - DIFFERENTIAL ASSEMBLY 4 - SIDE GEAR
4. Using a plastic hammer, remove extension housing/adapter plate on the right side of the transaxle. WARNING: Hold onto differential assembly to prevent it from rolling out of housing.
5. Remove differential assembly.
6. Set up Dial Indicator Set C-3339A (2) and Adapter C-4996 (1) to measure side gear end play (Extension Housing Side). Side gear end play must be within 0.001-0.013 in. 1 - ADAPTOR C-4996 (NOTE POSITION) 2 - DIAL INDICATOR SET 3 - DIFFERENTIAL ASSEMBLY
7. Set up Dial Indicator Set C-3339A (2) and Adaptor C-4996 (1) to measure side gear end play (Ring Gear Side). Side gear end play must be within 0.001-0.013 in. 1 - COLLETS 5048-4 2 - BUTTON L-4539-2 3 - BEARING CONE
8. Remove differential side bearing cone (3) from ring gear side of differential. Install Thrust Button L-4539-2 (2), and Collets 5048-4 (1). 1 - PULLER SET 5048 2 - COLLETS 5048-4
9. Install Puller Set 5048 (1) , Collets 5048-4 (2) and sleeve. Remove and discard bearing cone. 1 - BUTTON L-4539-2
10. Remove differential side bearing cone from outboard end (opposite ring gear) of differential. Install Thrust Button L-4539-2 (1) . 1 - PULLER SET 5048 2 - COLLET 5048-3
11. Install Puller Set 5048 (1) , (2) Collets 5048-3 and sleeve. Remove and discard bearing cone. 1 - PINION SHAFT RETAINER
12. Remove pinion shaft retainer plate bolts (1) . 1 - PINION SHAFT RETAINER
13. Remove pinion shaft retainer (1) . 1 - PINION SHAFT
14. Remove pinion shaft (1) from differential case. 1 - WASHER 2 - PINION GEAR
15. Rotate pinion gears (2) about case and remove (w/washer) (1). 1 - SIDE GEAR
16. Remove differential side gears (1) . 1 - SIDE GEAR THRUST WASHER
17. Remove side gear thrust washers (1) . 1 - RING GEAR BOLTS
18. Remove remaining differential ring gear-to-case bolts (1) . 1 - SOFT-FACED HAMMER 2 - RING GEAR
19. Using a soft-faced hammer (1) , remove ring gear (2) from case. 1 - JAW SET 6062A 2 - DIFFERENTIAL BEARING RETAINER
20. Using Remover 6062A , remove the differential bearing race from the extension housing/adapter plate. 1 - JAW SET 6062A 2 - DIFFERENTIAL BEARING RETAINER
21. Using Remover 6062A , remove the differential bearing race from the bearing retainer.

DIFFERENTIAL SERVICE TOOLS

The planetary geartrain utilizes two planetary gear sets that connect the transmission input shaft to the output shaft. Input and holding clutches drive or lock different planetary members to change output ratio or direction.

Scheme 341

Two hydraulically applied multi-disc clutches are used to hold planetary geartrain components (1,4) stationary while the input clutches drive others. The 2/4 (2) and Low/Reverse (3) clutches are considered holding clutches and are contained at the rear of the transaxle case.

Note. Refer to ELEMENTS IN USE AT EACH POSITION OF SELECTOR LEVER for a collective view of which clutch elements are applied at each position of the selector lever.

As the torque converter rotates, the converter hub rotates the inner and outer gears. As the gears rotate, the clearance between the gear teeth increases in the crescent area, and creates a suction at the inlet side of the pump. This suction draws fluid through the pump inlet from the oil pan. As the clearance between the gear teeth in the crescent area decreases, it forces pressurized fluid into the pump outlet and to the valve body.

Scheme 342

Measuring oil pump output volume will determine if sufficient flow to the transmission oil cooler exists, and whether or not an internal transmission failure is present.

Verify that transmission fluid is at the proper level. If adding fluid is necessary, fill to the proper level with Mopar® ATF+4 (Automatic Transmission Fluid-Type 9602). The following procedure is to check oil pump output volume

1. Using hose cutters or a suitable blade, cut the "to cooler" line off flush with the cooler inlet fitting and place a collection container under the open line. CAUTION: With the fluid set at the proper level, fluid collection should not exceed (1) quart or internal damage to the transmission may occur.
2. Start engine and run at curb idle speed , with the shift selector in neutral.
3. If one quart of ATF is collected in 20 seconds or less, flow is within acceptable limits. If fluid flow is intermittent or it takes more than 20 seconds to collect one quart of ATF. See «Transmission and Transfer Case/Automatic - 41TE - Diagnosis and Testing»(ref-353617-S32439922792010011200000) .
4. Inspect the cooler hose for damage. Replace if necessary.
5. Re-connect the to cooler line to the transmission using a service splice kit. Refer to instructions inclued with the kit.
6. Refill the transaxle to proper level with Mopar® ATF+4 (Automatic Transmission Fluid-Type 9602).

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1. Remove the reaction shaft support bolts.
2. Remove the reaction shaft support (2) from the pump housing (1). 1 - PUMP HOUSING 2 - OUTER PUMP GEAR 3 - INNER PUMP GEAR 4 - REACTION SHAFT SUPPORT 5 - SEAL RINGS (4) 6 - REACTION SHAFT 7 - CRESCENT
3. Remove the pump gears (2, 3) and check for wear and damage on pump housing (1) and gears (2, 3).

DESCRIPTION

The Input Speed Sensor (1) , is a two-wire magnetic pickup device that generates AC signals as rotation occurs. It is threaded into the transaxle case.

Scheme 345

The Input Speed Sensor (1) is sealed with an O-ring (2) , and is considered a primary input to the Powertrain/Transmission Control Module.

Scheme 346

The Input Speed Sensor (1) provides information on how fast the input shaft is rotating. As the teeth of the input clutch hub (3) pass by the sensor coil, an AC voltage is generated and sent to the PCM/TCM. The PCM/TCM interprets this information as input shaft rpm.

The PCM/TCM compares the input speed signal with output speed signal to determine the following

1. Transmission gear ratio
2. Speed ratio error detection
3. CVI calculation

The PCM/TCM also compares the input speed signal and the engine speed signal to determine the following

1. Torque converter clutch slippage
2. Torque converter element speed ratio

Scheme 347

1. Disconnect battery negative cable.
2. Disconnect input speed sensor connector (2) . 1 - INPUT SPEED SENSOR
3. Unscrew and remove input speed sensor (1) . 1 - INPUT SPEED SENSOR 2 - O-RING
4. Inspect speed sensor O-ring (2) and replace if necessary.

The Transmission Range Sensor (TRS) communicates Shift Lever Position (SLP) to the PCM/TCM as a combination of open and closed switches. Each shift lever position has an assigned combination of switch states (open/closed) that the PCM/TCM receives from four sense circuits. The PCM/TCM interprets this information and determines the appropriate transaxle gear position and shift schedule.

Since there are four switches, there are 16 possible combinations of open and closed switches (codes). Seven of these codes are related to gear position and three are recognized as "between gear" codes. This results in six codes which should never occur. These are called "invalid" codes. An invalid code will result in a DTC, and the PCM/TCM will then determine the shift lever position based on pressure switch data. This allows reasonably normal transmission operation with a TRS failure.

TRS SWITCH STATES

Autostick is a driver-interactive transaxle feature that offers manual gear shifting capability of an automatic transaxle.

When the shifter is moved into the Autostick position, the transaxle remains in whatever gear it was using before Autostick was activated. Moving the shifter to the left (towards the driver) causes a downshift and moving to the right (towards the passenger) causes an upshift. The instrument cluster will illuminate the selected gear. The vehicle can be launched in 1st, 2nd, or 3rd gear while in the Autostick mode. The speed control is operable in 3rd and 4th gear Autostick mode. Speed control will be deactivated if the transaxle is shifted to 2nd gear. Shifting into OD position cancels the Autostick mode, and the transaxle resumes the OD shift schedule.

The Brake Transmission Shifter/Ignition Interlock (BTSI) is engaged whenever the ignition switch is in the LOCK or ACC position. An additional electrically activated feature will prevent shifting out of the PARK position unless the brake pedal is depressed at least one-half inch. When the key is in the ON position and the brake pedal is depressed, the shifter is unlocked and will move into any position.

Scheme 348

When service brake pedal is not depressed the solenoid rotating arm (2) is free to rotate. The shifter gate pin (1) hits the blocking arm (3) and is prevented from moving from park.

When service brake is applied the rotating arm (2) is prevented from rotating by magnetic force within the solenoid. The shifter gate pin (1) pushes the rotating arm (2) and blocker arm (3) allowing the shifter to move out of park.

The Torque Reduction Link (TRD) is a wire between the PCM and TCM that is used by the TCM to request torque management. Torque management controls or reduces torque output of the engine during certain shift sequences, reducing torque applied to the transaxle clutches.

The torque management signal is basically a 12-volt pull-up supplied by the PCM to the TCM over the torque reduction link (TRD). Torque management is requested when the TCM pulses this signal to ground. The PCM recognizes this request and responds by retarding ignition timing, killing fuel injectors, etc. The PCM sends a confirmation of the request to the TCM via the communication bus. Torque reduction is not noticable by the driver, and usually lasts for a very short period of time.

If the confirmation signal is not received by the TCM after two sequential request messages, a diagnostic trouble code will be set.

Scheme 349

The valve body assembly consists of a cast aluminum valve body, a separator plate, and transfer plate. The valve body contains valves and check balls that control fluid delivery to the torque converter clutch, solenoid/pressure switch assembly, and frictional clutches. The valve body contains the following components

1. Regulator valve (8)
2. Solenoid switch valve (7)
3. Manual valve (5)
4. Converter clutch switch valve (6)
5. Converter clutch control valve (4)
6. Torque converter regulator valve (2)
7. Low/Reverse switch valve (3)

In addition, the valve body also contains the thermal valve, #2, #3 and #4 check balls, the #5 (overdrive) check valve and the 2/4 accumulator assembly. See Transmission and Transfer Case/Automatic - 41TE/VALVE BODY - Disassembly .

Note. Refer to the Hydraulic Schematics for a visual aid in determining valve location, operation and design.