Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001KEDP
Model Year Start: 2020 Model: Camry Prod Date Range: [09/2019 -           ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: Mute Signal Circuit between Radio Receiver and Telematics Transceiver; 2020 - 2024 MY Camry [09/2019 -        ]

Mute Signal Circuit between Radio Receiver and Telematics Transceiver

DESCRIPTION

The DCM (telematics transceiver) sends a mute signal to the radio and display receiver assembly.

The radio and display receiver assembly controls the volume according to the mute signal from the DCM (telematics transceiver).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

    Click here 2018 - 2020 MY Camry [06/2017 - 10/2020]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: PRECAUTION 2021 - 2024 MY Camry [10/2020 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: PRECAUTION

  • When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
    • A communication malfunction DTC may be stored.
    • The radio and display receiver assembly may not operate normally.
  • Before replacing the DCM (telematics transceiver), refer to Registration.

    Click here 2020 - 2022 MY Camry [09/2019 - 08/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION 2023 - 2024 MY Camry [08/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION

PROCEDURE

1.

INSPECT DCM (TELEMATICS TRANSCEIVER)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

K140-14 (MUTE) - Body ground

Ignition switch ACC

Audio system playing

→ Emergency call mode

2.0 V or higher

→ Below 1 V

*a

Component with harness connected

(DCM (Telematics Transceiver))

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 2020 MY Camry [09/2019 - 10/2020]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: PROBLEM SYMPTOMS TABLE 2021 - 2024 MY Camry [10/2020 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: PROBLEM SYMPTOMS TABLE

NG

2.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER))

(a) Disconnect the K2 radio and display receiver assembly connector.

(b) Disconnect the K140 DCM (telematics transceiver) connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

K2-3 (TMUT) - K140-14 (MUTE)

Always

Below 1 Ω

K2-3 (TMUT) or K140-14 (MUTE) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY

(a) Disconnect the K140 DCM (telematics transceiver) connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

K140-14 (MUTE) - Body ground

Ignition switch ACC

2.0 V or higher

*a

Front view of wire harness connector

(to DCM (Telematics Transceiver))

OK

REPLACE DCM (TELEMATICS TRANSCEIVER) 2020 MY Camry [09/2019 - 10/2020]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 2018 - 2020 MY Camry [06/2017 - 10/2020]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL