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Automatic Transaxle Control System: Overview Hyundai Elantra III facelift

Automatic Trans 37 illustrations ~1009 words

Scheme 81

Scheme 81: Components (1)
Scheme 81: Components (1)

Scheme 82

Scheme 82: Components (2)
Scheme 82: Components (2)

Scheme 83

Scheme 83: Removal
Scheme 83: Removal

Scheme 84

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Scheme 84

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Scheme 85

Scheme 86

Scheme 86
Scheme 86

Scheme 87

Scheme 87
Scheme 87

Scheme 88

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Scheme 88

Scheme 89

Scheme 89
Scheme 89
  1. Remove the shift lever knob (A).
  2. Remove the center console cover (A).
  3. Remove the center console. (refer to «CONSOLE»(ref-381705-S36630584662010123100000) )
  4. Remove the control cable assembly (B) by removing the clamp (A).
  5. Disconnect the interlock switch connector (A).
  6. Remove the shift lever assembly (A).
  7. Remove the retainer (A) and nuts (B). NOTE: In case, remove the crash pad and cowl cross bar. (refer to «CRASH PAD»(ref-381705-S08493918832010123100000) and «HEATER UNIT»(/hyundai/elantra/iii-facelift-2003-2010/remont/heater/#heater-system) )
  8. Remove the control cable assembly from the transaxle (refer to «AUTOMATIC TRANSAXLE»(ref-381707-S12732044132010123100000) ).
  9. Remove the control cable assembly.

Scheme 90

Scheme 90: Installation
Scheme 90: Installation

Scheme 91

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Scheme 92

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Scheme 93

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Scheme 96
Scheme 96
  1. Install the control cable assembly to transaxle. (refer to «AUTOMATIC TRANSAXLE»(ref-381707-S12732044132010123100000) )
  2. Install the retainer (A) and nuts (B). Tightening torque: 12-15 Nm (1.2-1.5 kgf.m, 8.7-10.8 lb-ft) NOTE: In case, install the crush pad and cowl cross bar. (refer to and «HEATER UNIT»(/hyundai/elantra/iii-facelift-2003-2010/remont/heater/#heater-system) )
  3. Install the shift lever assembly (A). Tightening torque: 9-14 Nm (0.9-1.4 kgf.m, 8.7-10.8 lb-ft)
  4. Connect the interlock switch connector (A).
  5. Install the control cable assembly (B) by installing the clamp (A).
  6. Install the center console. (refer to «CONSOLE»(ref-381705-S36630584662010123100000) )
  7. Install the center console cover (A).
  8. Install the shift lever knob (A).

Description

INPUT SPEED SENSOR DESCRIPTION Sensor type Type : Hall Sensor Operating voltage : DC 12V Current consumption : 22mA (Max) Function Input shaft speed sensor: Detect the input shaft rotation at the OD & REV retainer side to control oil pressure when shifting. Feedback control, clutch-clutch control, damper clutch control, shift range control, incorrect ratio control and sensor trouble detection signal. Connector

Scheme 97

Scheme 97: Description
Scheme 97: Description

Scheme 98

Scheme 98
Scheme 98
ItemInspection itemStandard value
Air gapInput shaft speed sensor0.035in (0.9mm)
Sensor resistanceInput shaft speed sensorOver 1 Mohms
Output voltageHIGHOver 4.8V
LOWBelow 0.8V

INPUT SPEED SENSOR RESISTANCE - OUTPUT VOLTAGE

Scheme 99

Scheme 99: Removal
Scheme 99: Removal
  1. Remove the battery terminal.
  2. Remove the battery and battery tray.
  3. Remove the air duct.
  4. Remove the air cleaner assembly. (Refer to air cleaner assembly )
  5. Remove the input shaft speed sensor connector (A).
  6. Remove the input shaft speed sensor (A).

Scheme 100

Scheme 100: Installation
Scheme 100: Installation

Scheme 101

Scheme 101
Scheme 101
  1. Install the new O-ring to the input shaft speed sensor.
  2. Install the input shaft speed sensor (A). Tightening torque: 10~12 Nm (1.0~1.2 kgf.m, 7~8 lb-ft) CAUTION: While installing the input shaft speed sensor, do not allow dust or other foreign particles to enter the transaxle.
  3. Check the connector for dust, dirt, or oil, and then connect the input shaft speed sensor connector (A) securely.
  4. Installation is the reverse of removal.

OUTPUT SPEED SENSOR DESCRIPTION Sensor type Type : Hall Sensor Output voltage : DC 12V Current consumption : 22mA (Max) Function Output shaft speed sensor : Detect the output shaft rpm (T/F DRIVE GEAR RPM) at the T/F drive gear Feedback control, clutch-clutch control, damper clutch control, shift range control, incorrect ratio control and sensor trouble detection signal. Connector

Scheme 102

Scheme 102: Description
Scheme 102: Description
ItemInspection itemStandard value
Air gapOutput shaft speed sensor0.025in (0.65mm)
Sensor resistanceOutput shaft speed sensorOver 1 Mohms
Output voltageHIGHOver 4.8V
LOWBelow 0.8V

OUTPUT SPEED SENSOR RESISTANCE - OUTPUT VOLTAGE

Scheme 103

Scheme 103: Removal
Scheme 103: Removal

Scheme 104

Scheme 104
Scheme 104
  1. Remove the battery terminal.
  2. Remove the battery and battery tray.
  3. Remove the air duct.
  4. Remove the air cleaner assembly. (Refer to «AUTOMATIC TRANSAXLE»(ref-381707-S12732044132010123100000) )
  5. Remove the output shaft speed sensor connector (A).
  6. Remove the output shaft speed sensor (A).

Scheme 105

Scheme 105: Installation
Scheme 105: Installation

Scheme 106

Scheme 106
Scheme 106
  1. Install the new O-ring to the output shaft speed sensor.
  2. Remove the output shaft speed sensor (A). Tightening torque: 10~12 Nm (1.0~1.2 kgf.m, 7~8 lb-ft) CAUTION: While installing the output shaft speed sensor, do not allow dust or other foreign particles to enter the transaxle.
  3. Check the connector for dust, dirt, or oil, then connect the output shaft speed sensor connector (A) securely.
  4. Installation is the reverse of removal.

TRANSAXLE OIL TEMPERATURE SENSOR - DESCRIPTION Sensor type Type : Thermistor Use available temperature :-40~160°C (-40~320°F) Function and feature Detect the temperature of ATF through the thermistor which is exposed outside. When shifting the range, it is used as the oil pressure control information. Connector

Scheme 107

Scheme 107: Description
Scheme 107: Description
Temp.[°C(°F)]Resistance (Kohms)Temp.[°C(°F)]Resistance (Kohms)
40(-40)139.580 (176)1.08
20(-4)47.4100 (212)0.63
0 (32)18.6120 (248)0.38
20 (68)8.1140 (284)0.25
40 (104)3.8160 (320)0.16
60 (140)1.98

TRANSAXLE OIL TEMPERATURE SENSOR TEMPERATURE - RESISTANCE

Scheme 108

Scheme 108: Installation Location
Scheme 108: Installation Location

Scheme 109

Scheme 109: Removal
Scheme 109: Removal
  1. Remove the battery terminal.
  2. Lift the vehicle.
  3. Remove the under cover.
  4. Loosen the drain plug and drain the transaxle oil.
  5. Remove the oil pan. (Refer to appropriate Automatic Transaxle Disassembly Overhaul article )
  6. Remove the oil filter.
  7. Remove the valve body. (Refer to appropriate Automatic Transaxle Disassembly Overhaul article )
  8. Disconnect the main harness connector (A) from the valve body.

Scheme 110

Scheme 110: Installation
Scheme 110: Installation

Scheme 111

Scheme 111
Scheme 111
  1. Connect the main harness connector (A) to the valve body. CAUTION: When connecting the oil temperature connector, check the connector for rust, dirt, or oil, then reconnect it.
  2. Install the valve body. (Refer to appropriate Automatic Transaxle Reassembly Overhaul article ) Tightening torque: 10~12 Nm (1.0~1.2 kgf.m, 7~8 lb-ft)
  3. Install the oil filter. Tightening torque: 5~7 Nm (0.5~0.7 kgf.m, 4~5 lb-ft)
  4. Continue to apply liquid gasket at application points at the oil pan with Ø0.098in (2.5mm) thickness. Liquid gasket Part name : Three bond 1281B
  5. Tighten the mounting bolt with the specified TORQUE after installing the oil pan. Tightening torque: 10~12 Nm (1.0~1.2 kgf.m, 7~8 lb-ft)
  6. Install the drain plug. Tightening torque: 35~45 Nm (3.5~4.5 kgf.m, 25~32 lb-ft)
  7. Installation is the reverse of the removal.
Sensor typeType : Rotary Available temperature range : -40~150°C (-40~320°F) Tightening torque :10~12 Nm (1.0~1.2 kgf.m, 7~8 lb-ft)
FunctionDetect the position of select lever through the contact switch. It makes starting possible in "P" and "N".

INHIBITOR SWITCH DESCRIPTION

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Scheme 113

Scheme 114

Scheme 114: Removal
Scheme 114: Removal

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Scheme 115
Scheme 115
  1. Remove the battery terminal.
  2. Remove the battery and battery tray.
  3. Remove the air duct.
  4. Remove the air cleaner assembly. (Refer to air cleaner assembly air cleaner assembly )
  5. Disconnect the inhibitor switch connector (A).
  6. Remove the control cable (A) from the manual control lever.
  7. Remove the inhibitor switch and manual control lever.

Scheme 116

Scheme 116: Installation
Scheme 116: Installation

Scheme 117

Scheme 117
Scheme 117
  1. Set the inhibitor switch to the "N" position.
  2. Set the inhibitor switch control shaft to the "N" position.
  3. Install the inhibitor switch and manual control lever. Tightening torque: Shaft nut: 17~21 Nm (1.7~2.1 kgf.m, 12~15 lb-ft) Bolt (2EA): 10~12 Nm (1.0~1.2 kgf.m, 7~8 lb-ft)
  4. Install the control cable (A) to the manual control lever.
  5. Connect the inhibitor switch connector (A).
  6. Installation is the reverse of the removal.
  7. Turn the ignition switch ON after installation. Move the shift lever from "P" range to "L" range, and verify that the A/T gear position indicator follows the transaxle range switch.

See also:
• HEATER UNIT

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