Kia Cadenza YG: Automatic Transaxle System / Troubleshooting

Kia Cadenza YG 2016-2021 Service Manual / Automatic Transaxle System / Troubleshooting

Troubleshooting
Limp Home Mode
Features a fail-safe function that prevents dangerous situations in the event of a transaxle failure. The vehicle will be driven in limp home mode if the transaxle malfunctions. In this mode, the transaxle operates at a minimal functionality level (fixed shifting, limited shifting, reverse, neutral), making it possible for the vehicle to reach a service center.
   
Limp Home Mode: Limited shifting
Mechanical limp home mode: Fixed shifting (failure as mechanical parts, solenoid valves, TCM, CAN communication)
Troubleshooting
Trouble symptom
Suspect area
Remedy
Shifting delay, Shifting shock, Poor acceleration
Damaged clutch / brake
Replace the brake or clutch.
Faulty hydraulic control
Inspect the solenoid valve.
Faulty hydraulic supply
Inspect the fluid level.
Inspect the fluid cleanliness 
Replace the oil pump
Not performed TCM learning
Perform the TCM adaptive value learning.
Mechanical limp home mode
(locked into 4th, manual shifting disabled)
Faulty Solenoid valve
Inspect the solenoid valve.
Replace the valve body.
Faulty TCM
Replace the TCM.
Faulty CAN communication
Inspect the CAN communication line.
Limp home mode
(locked into 4th, manual shifting 2nd-4th enabled)
Faulty input & output speed sensor
Replace the input & output speed sensor.
Limp home mode
(1st-2nd shifting disabled, 3rd-6th shifting enabled)
Faulty inhibitor switch
Replace the inhibitor switch.
Manual shifting disabled
Faulty TCM
Replace the TCM.
Faulty connector connection
Check the connection of manual mode connector
Faulty manual mode switch
Replace the manual mode switch housing

    Special Service Tools Tool Name / NumberIllustrationDescriptionEngine support fixture (Beam)09200-3N000Used for holding engine assembly when removing / installing transaxle.

    Other information:

    Kia Cadenza YG 2016-2021 Service Manual: Special Service Tools

    S

    Kia Cadenza YG 2016-2021 Service Manual: General Safety Information and Caution

    Instructions When Handling Refrigerant 1. R-134a liquid refrigerant is highly volatile. A drop on the skin of your hand could result in localized frostbite. When handling the refrigerant, be sure to wear gloves. 2. It is standard practice to wear goggles or glasses to protect your eyes, and gloves to protect your hands.

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