NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver; 2018 - 2019 MY Camry [06/2017

Last Modified: 11-20-2023	6.11:8.1.0	Doc ID: RM1000000014Z14
Model Year Start: 2018	Model: Camry	Prod Date Range: [06/2017 - 09/2019]
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver; 2018 - 2019 MY Camry [06/2017 - 09/2019]

Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver

DESCRIPTION

The DCM (telematics transceiver) sends a mute signal to the stereo component amplifier assembly.

The stereo component amplifier assembly controls the volume according to the mute signal from the DCM (telematics transceiver).

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 Navigation System.
Click here
Before replacing the DCM (telematics transceiver), refer to Registration.
Click here

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

K12-17 (MUTE) - Body ground

Engine switch on (ACC)

Audio system playing

→ Emergency call mode

2.0 V or higher

→ Below 1 V

*a	Component with harness connected (DCM (Telematics Transceiver))

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

2.	CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER))

(a) Disconnect the K10 stereo component amplifier assembly connector.

(b) Disconnect the K12 DCM (telematics transceiver) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-24 (TMUT) - K12-17 (MUTE)	Always	Below 1 Ω
K10-24 (TMUT) or K12-17 (MUTE) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY

(a) Disconnect the K12 DCM (telematics transceiver) connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
K12-17 (MUTE) - Body ground	Engine switch on (ACC)	2.0 V or higher

*a	Front view of wire harness connector (to DCM (Telematics Transceiver))