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Automatic Transaxle System - General Information Hyundai Santa Fe III

Automatic Trans 8 illustrations ~508 words

Specifications

ItemSpecifications
Transaxle typeA6LF2
Engine modelGasoline 3.3 GDI
Torque converter type3-element, 1-stage, 2-phase type
Torque converter sizeØ260 mm (10.2362 in)
Oil pump systemParachoid
Friction elementsClutch: 2EA
Brake: 3EA
OWC: 1EA
Planetary gear3EA
Gear ration1st4.651
2nd2.831
3rd1.842
4th1.386
5th1.000
6th0.772
Reverse3.393
Final gear ratio3.041
Fluid pressure balance piston2EA
Accumulator4EA
Solenoid valve8EA (VFS: 6EA, ON/OFF: 2EA)
Shift lever position4 Range (P, R, N, D)
Oil filter1EA

VFS: Variable Force Solenoid

Input Speed Sensor

  1. Type: Hall effect sensor
  2. Specifications
Operation condition (°C)°F((-) 40 ~ 150)) -40 ~ 302
Air gap (mm) in.(0.95 ~ 1.55) 0.037 ~ 0.06
Output voltage(V)High1.18 ~ 1.68
Low0.59 ~ 0.84

Output Speed Sensor

  1. Type: Hall effect sensor
  2. Specifications
Operation condition (°C)°F((-) 40 ~ 150)) -40 ~ 302
Air gap (mm) in.(0.55 ~ 1) 0.021 ~ 0.039
Output voltage (V)High1.18 ~ 1.68
Low0.59 ~ 0.84

Oil Temperature Sensor

  1. Type: Negative thermal coefficient type
  2. Specifications
Temp. (°C)°FResistance (kohms)
(-40) -4048.1
(-20) -4.015.6
(0) 32.05.88
(20) 68.02.51
(40) 104.01.11
(60) 140.00.61
(80) 176.00.32
(100) 212.00.18
(120) 248.00.10
(140) 284.00.06
(165) 329.00.03

Inhibiter Switch

  1. Type: Combination of output signals from 4 terminals
  2. Specifications
Power supply (V)12
Output typePin to Pin

Solenoid Valves

Direct control VFS[26/B, T/CON]

  1. Control type: Normal low type
Control Pressure kpa (kgf/cm 2 , psi)9.81 ~ 500.14 (0.1 ~ 5.1, 1.42 ~ 72.54)
Current value (mA)50 ~ 850
Internal resistance(ohms)5.1

Direct control VFS[UD/B, OD/C, 35R/C]

  1. Control Type: Normal high type
Control Pressure kpa (kgf/cm 2 , psi)500.14 ~ 9.81 (5.1 ~ 0.1, 72.54 ~ 1.42)
Current value (mA)50 ~ 850
Internal resistance(ohms)5.1

Line Pressure Control VFS

  1. Control type: Normal high type
Control Pressure kpa (kgf/cm 2 , psi)500.14 ~ 9.81 (5.1 ~ 0.1, 72.54 ~ 1.42)
Current value (mA)50 ~ 850
Internal resistance(ohms)5.1

ON/OFF Solenoid Valve (SS-A, SS-B)

  1. Control type: Normal low type
Control pressure kpa (kgf/cm 2 , psi)490.33 (5.0, 71.12)
Internal resistance(ohms)10 ~ 11

Solenoid Valve Operation Table

SS-ASS-BUD/B-VFSOD/C-VFS35R/C-VFS26/B-VFS
N/HN/HN/HN/L
N, POOO
1O
2OOO
3OO
4O
5OO
6OOO
LOO
ROOO
O: Connected status : Connected at vehicle speed above 8km/h

Tightening Torques

ItemN.mKgf.mLb-ft
TCM installation mounting bolt/nut9.8 ~ 11.81.0 ~ 1.27.2 ~ 8.7
Shift cable bracket mounting bolt14.7 ~ 21.61.5 ~ 2.210.9 ~ 15.9
Input shaft speed sensor mounting bolt9.8 ~ 11.81.0 ~ 1.27.2 ~ 8.7
Output shaft speed sensor mounting bolt9.8 ~ 11.81.0 ~ 1.27.2 ~ 8.7
Shift lever assembly bolt8.8 ~ 13.70.9 ~ 1.49.4 ~ 10.8
Inhibitor switch mounting bolt9.8 ~ 11.81.0 ~ 1.27.2 ~ 8.7
Valve body cover mounting bolt13.7 ~ 15.71.4 ~ 1.610.1 ~ 11.6
ATF Warmer mounting bolt7.8 ~ 11.80.8 ~ 1.25.8 ~ 8.7
Injection hole (eyebolt)2.9 ~ 4.90.3 ~ 0.52.2 ~ 3.6
Oil drain plug38.2 ~ 48.13.9 ~ 4.928.2 ~ 35.4
Torque converter mounting bolt45.1 ~ 52.04.6 ~ 5.333.3 ~ 38.3
Starter motor mounting bolts49.0 ~ 63.75.0 ~ 6.536.2 ~ 47.0
Automatic transaxle upper mounting bolt (TM=>Eng)42.2 ~ 53.94.3 ~ 5.531.1 ~ 39.8
49.0 ~ 63.75.0 ~ 6.536.2 ~ 47.0
Automatic transaxle upper mounting bolt (Eng=>TM)78.5 ~ 98.18.0 ~ 10.057.9 ~ 72.3
39.2 ~ 46.14.0 ~ 4.728.9 ~ 34.0
Automatic transaxle mounting support bracket bolt58.8 ~ 78.56.0 ~ 8.043.4 ~ 57.9
Automatic transaxle mounting bracket bolt88.3 ~ 107.99.0 ~ 11.065.1 ~ 79.6

Fluid

ItemSpecified lubricantQuantity
Transaxle fluidSK ATF SP-IV, MICHANG ATF SP-IV, NOCA ATF SP-IV, Hyundai Genuine ATF SP-IV or other brands meeting the above specification approved by Hyundai Motors Corp.7.8 L (2.06 U.S gal., 8.24 U.S.qt., 6.86 lmp.qt.)

Sealant

ItemSpecified sealant
Rear coverLOCTITE FMD-546 or THREE-BOND TB1281B
Torque converter housing

Special Service Tools

Tools (Number and name) Illustration8 Use 09200-3N000 Engine support fixture (Beam) Removal and installation of the transaxle. Except lower supporter, use beam only with new engine support fixture supporter (SST No.: 09200-2S000) 09200-2S000 Supporter Removal and installation of the transaxle. Use this beam (SST No.: 09200-38001/3N000) with the supporter (SST No.: 09200-2S000) 09200-2W000 Adapter Removal and installation of the transaxle. Use this beam (SST No.: 09200-38001/3N000) with the adapter (SST No.: 09200-2W000) 09453-3L240 Oil seal installer 2WD: Installation of oil seal for the transaxle case and converter housing side. [Using with bar (SST NO.: 09231-H1100)] 4WD: Installation of oil seal for the transaxle case side. [Using with bar (SST NO.: 09231-H1100)] 09453-2W100 Oil seal installer 4WD: Installation of oil seal for the transaxle converter housing side. [Using with bar (SST NO.: 09231-H1100)] The transaxle case side is install using the oil seal installer (SST No: 09453-3L240, 09231-H1100). 09231-H1100 Bar Installation of transaxle case oil seal. [Using with oil seal installer (SST No.: 09453-3L240, 09453-2W100)] 09480-A3800 Inhibitor neutral fixed pin Inhibitor neutral fixed

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Scheme 29: Special Service Tools
Scheme 29: Special Service Tools

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* Engine support fixture special tool assembly drawing

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Fault Diagnosis

Features a fail-safe mechanism that provides "limp-home" 4th gear hold to enable the vehicle to be driven to the owner's home or dealer shop. Fail-Safe: The TCM provides 4th gear hold and Reverse gear in the event of a malfunction.

Limp Home: Maintains minimal functionality (Drive (4th gear hold), Reverse) in the event of a malfunction, making it possible for the vehicle to reach the dealer shop.

Self-diagnosis

Transaxle Control Module (TCM) is in constant communication with the control system's components (sensors and solenoids).

If an abnormal signal is received for longer than the predefined duration, TCM recognizes a fault, stores the fault code in memory, and then sends out a fault signal through the self-diagnosis terminal. Such fault codes are independently backed up and will not be cleared even if the ignition switch is turned off, the battery is disconnected, or the TCM connector is disconnected.

CAUTIONDisconnecting a sensor or an actuator connector while the ignition switch is in the "On" position generates a Diagnostic Trouble Code (DTC) and commits the code to memory. In such event, disconnecting the battery will not clear the fault diagnosis memory. The diagnosis tool must be used to clear the fault diagnosis memory. Before removing or installing any part, read the diagnostic trouble codes and then disconnect the battery negative (-) terminal. Before disconnecting the cable from battery terminal, turn the ignition switch to OFF. Removal or connection of the battery cable during engine operation or while the ignition switch is ON could cause damage to the Transaxle Control Module (TCM). When checking the generator for the charging state, do not disconnect the battery '+' terminal to prevent the Engine Control Module (ECM) from damage due to the voltage. When charging the battery with the external charger, disconnect the vehicle side battery terminals to prevent damage to the TCM.

Checking Procedure (Self-diagnosis)

CAUTIONWhen battery voltage is excessively low, diagnostic trouble codes can not be read. Be sure to check the battery for voltage and the charging system before starting the test.

Inspection Procedure (Using the GDS)

  1. Turn OFF the ignition switch.
  2. Connect the GDS to the data link connector on the lower crash pad.
  3. Turn ON the ignition switch.
  4. Use the GDS to check the diagnostic trouble code.
  5. Repair the faulty part from the diagnosis chart.
  6. Erase the diagnostic trouble code.
  7. Disconnect the GDS.
CAUTIONAfter replacing the automatic transaxle, use the GDS to reset (erase) the TCM learning values. Then perform Transaxle Control Module (TCM) learning to provide optimum shift quality. Refer to REPAIR PROCEDURES . Adding automatic transaxle fluid. Refer to FLUID . After servicing the automatic transaxle or TCM, clear the Diagnostic Trouble Code (DTC) using the GDS tool. Diagnostic Trouble Codes (DTC) cannot be cleared by disconnecting the battery.

Symptom Troubleshooting

Trouble symptomSuspect areaRemedy
Shift delayBreakdown of clutch or brake Faulty hydraulic control Faulty hydraulic supplyClutch, Brake Solenoid valve, Valve body Electric oil pump Mechanical oil pump Cleanliness of automatic transaxle fluid (foreign material) Automatic transaxle fluid level
Vibration of the vehicle, when the shifting Shift shockDamaged of clutch or brake Faulty hydraulic control Faulty hydraulic supply Faulty transaxle mounting Faulty speed sensor Faulty Harness Damaged connector & wiringClutch, Brake Solenoid valve, Valve body Electric oil pump Mechanical oil pump Cleanliness of automatic transaxle fluid (foreign material) Automatic transaxle fluid level Speed sensor and connector Harness & connector of transaxle Connector & wiring of vehicle
Fixed gear (shift impossible)Faulty solenoid valve Faulty TCM software programClutch, Brake Solenoid valve, Valve body Electric oil pump Mechanical oil pump Cleanliness of automatic transaxle fluid (foreign material) Automatic transaxle fluid level Speed sensor and connector Harness & connector of transaxle Connector & wiring of vehicle
Limited gear (shift possible)Faulty inhibitor switch Faulty hydraulic supplyInhibitor switch & connector Connector & wiring of vehicle Power
Driving impossibleFaulty CAN CommunicationCAN Communication line TCM, ECM Power
Poor accelerationFaulty hydraulic control Faulty hydraulic supplySolenoid valve, Valve body Electric oil pump Mechanical oil pump Cleanliness of automatic transaxle fluid (foreign material) Automatic transaxle fluid level Connector & wiring of vehicle Power

See also:
• REPAIR PROCEDURES
• FLUID

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