Hyundai Santa Fe: Automatic Transaxle Control System / Input Speed Sensor. Repair procedures

Hyundai Santa Fe (TM) 2019-2024 Service Manual / Automatic Transaxle System (SBC) / Automatic Transaxle Control System / Input Speed Sensor. Repair procedures

Inspection
  
Refer to the DTC manual for the check procedure.
Removal
  
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
Automatic transaxle is composed of delicate components. Be careful not to cause any damage on the component in the course of assembly and disassembly.
Maintain clean condition so that foreign substance does not get into the automatic transaxle.
Use a coated apron, latex gloves, and stainless tray to prevent foreign substance from getting into the transaxle.
Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air duct and the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
3.
Separate the air bleed hose (B) and then wiring bracket (A).

4.
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
5.
Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.
Drain plug tightening torque :
33.3 - 43.1 N.m (3.4 - 4.4 kgf.m, 24.6 - 31.8 lb-ft)

  
Replace the gasket before reinstalling the drain plug.
6.
Loosen the mounting bolts (A) of the valve body cover.
Tightening torque :
11.8 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.7 - 10.1 lb-ft)

  
Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
  
Replace the gasket (A) before reinstalling the valve body cover.
After the installation, start the engine and then check if there are any leakages from the valve body cover.

7.
Loosen the bolts and then removing the main harness (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb-ft)

  
Check for the looseness, poor connection, bending, corrosion, contamination, deterioration, or damage before reinstalling the solenoid valve connector.
8.
Loosen the mounting bolts and then removing the valve body assembly (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

9.
Disconnect the input & output speed sensor connector (A).

10.
Loosen the bolts and then removing the input / output speed sensor (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb-ft)

Installation
1.
To install, reverse the removal procedure.
2.
Check fluid level after filling the automatic transaxle with fluid.
(Refer to Automatic Transaxle Syatem-"Automatic Transaxle Fluid(ATF)")
  
After ATF level check or exchange, be sure to remove residual ATF on transaxle case.
(Be especially sure to remove residual ATF between automatic transaxle case and valve body cover)
After installing, check for leakage of coolant or fluid from hose connection during engine start.

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