Lexus ES manuals

Lexus ES: Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver

Lexus ES (XZ10) Service Manual / Audio & Visual & Telematics / Audio / Video / Audio And Visual System (for Hv Model) / 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).

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

  • Before replacing the DCM (telematics transceiver), refer to Registration.

    Click here

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

G128-14 (MUTE) - Body ground

Power 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))

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

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

(a) Disconnect the G11 stereo component amplifier assembly connector.

(b) Disconnect the G128 DCM (telematics transceiver) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G11-2 (TMUT) - G128-14 (MUTE)

Always

Below 1 Ω

G11-2 (TMUT) or G128-14 (MUTE) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

3.

INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY

(a) Reconnect the G11 stereo component amplifier assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

G128-14 (MUTE) - Body ground

Power switch on (ACC)

2.0 V or higher

*a

Front view of wire harness connector

(to DCM (Telematics Transceiver))

OK

REPLACE DCM (TELEMATICS TRANSCEIVER)

NG

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY

READ NEXT:

 No Sound can be Heard from Speakers

PROCEDURE 1. CHECK AUDIO SETTINGS (a) In sound output setting mode, set volume, fader and balance to the initial values and check that the sound is normal. OK: Audio system returns to normal

 Noise Occurs or Sound Skips when Portable Player Plays

CAUTION / NOTICE / HINT HINT: Perform this check with the portable player volume set at an appropriate level. Make sure that there are no obstructions between the portable player and radio receiv

 Noise Occurs

PROCEDURE 1. CHECK NOISE CONDITION (a) Check from which direction the noise comes (front left or right, or rear left or right). OK: The location of the noise source can be determined. NG

SEE MORE:

 Airbag Signal Signal Plausibility Failure (B15C464)

DESCRIPTION If the DCM (telematics transceiver) detects an error in communication between the DCM (telematics transceiver) and the airbag ECU assembly as a result of the DCM (telematics transceiver) self check, this DTC will be set. DTC No. Detection Item DTC Detection Condition Trouble Are

 Remote Up / Down Function does not Operate

DESCRIPTION When the engine switch on (IG), the multiplex network master switch assembly sends remote up and down signals to each power window regulator motor assembly via LIN communication. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: The power window control system uses the LIN communication

© 2016-2024 Copyright www.lexguide.net