Kia Cadenza YG: MTS System / Telemetics Unit (TMU) Repair procedures

Kia Cadenza YG 2016-2021 Service Manual / Body Electrical System / MTS System / Telemetics Unit (TMU) Repair procedures

Removal

•	Take care not to scratch the crash pad and related parts.

1.	Disconnect the negative (-) battery terminal.

2.	Remove the AVN monitor. (Refer to "AVN System" - "AVN Head Unit")

3.	Remove the TMU unit (A) after loosening the mounting screws.

4.	Disconnect the connectors (A) from the TMU unit.

Installation

1.	Install the TMU unit after connecting the connector.

2.	Install the AVN monitor.

3.	Connect the negative (-) battery terminal.

Inspection

1.	After replacing the TMU unit, access Dealer Engineering Mode in head unit. (Refer to MTS system - "TMU Dealer Engineering Mode")

2.	Check the TMU version ("App S/W") from the head unit screen.

3.	Check the H/U Type from the head unit screen.

4.	Check the Model from the head unit screen.

❮Telemetics Unit (TMU) Components and Components Location

Component Connector Pin Specification No.Pin NameTypeFromToDescription (Wiring Spec.)1GNDDC GroundTMUBatteryConnected to battery ground2GNDDC GroundTMUBatteryConnected to battery ground3-----4-----5-----6-----7-----8-----9-----10-----11-----12HS CAN (-)Data I/OBUSBUSHigh Speed CAN bus low13HS CAN (+)Data I/OBUSBUSHigh Speed CAN bus high14-----15-----16-----17-----18V battery 1DC InputBatteryTMUDC level input from battery Supply power to TMU19Ignition 1Data InputJunction BoxTMUVehicle Key mode status20ACCData InputJunction BoxTMUVehicle Key mode status21AirbagData InputACUTMUAirbag status data from ACU22-----23-----24-----25-----26-----27-----28-----29-----30-----31MM CAN (-)Data I/OBUSBUSLow Speed CAN bus low32MM CAN (+)Data I/OBUSBUSLow Speed CAN bus high

Smart key System❯

Other information:

Kia Cadenza YG 2016-2021 Service Manual: Immobilizer Control Unit Repair procedures

Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the crash pad lower panel. (Refer to Body - "Crash Pad") 3. Disconnect the 5P connector of the SMARTRA unit and then remove the SMARTRA unit (A) after loosening the bolt. Installation 1.

Kia Cadenza YG: MTS System / Telemetics Unit (TMU) Repair procedures

Other information:

Kia Cadenza YG 2016-2021 Service Manual: Immobilizer Control Unit Repair procedures

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