Toyota CH-R Service Manual: Mute Signal Circuit between Radio Receiver and Telematics Transceiver

Toyota CH-R Service Manual / Navigation / Multi Info Display / Navigation System / Mute Signal Circuit between Radio Receiver and Telematics Transceiver

DESCRIPTION

The 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 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

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

F134-17 (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))

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

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

(a) Disconnect the F131 radio and display receiver assembly connector.

(b) Disconnect the F134 DCM (telematics transceiver) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F131-3 (TMUT) - F134-17 (MUTE)

Always

Below 1 Ω

F131-3 (TMUT) or F134-17 (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 DCM (telematics transceiver) connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F134-17 (MUTE) - Body ground

Engine 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 RADIO AND DISPLAY RECEIVER ASSEMBLY

    Data Signal Circuit between Radio Receiver and Stereo Jack Adapter
    DESCRIPTION The No. 1 stereo jack adapter assembly sends the sound data signal or image data signal from a USB device to the radio and display receiver assembly via this circuit. WIRING DIAGRAM ...

    Vehicle Speed Signal Circuit between Navigation ECU and Combination Meter
    DESCRIPTION The navigation ECU receives a vehicle speed signal from the combination meter assembly. HINT: A voltage of 12 V or 5 V is output from each ECU and then input to the combin ...

    Other materials:

    Toyota CH-R Service Manual > Front Door: Adjustment
    ADJUSTMENT CAUTION / NOTICE / HINT *a Centering Bolt *b Standard Bolt HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. Centering bolts are used to install the door hi ...

    Toyota CH-R Service Manual > Seat Belt: Tongue Plate Stopper
    Components COMPONENTS ILLUSTRATION *1 TONGUE PLATE STOPPER - - ● Non-reusable part - - Replacement REPLACEMENT PROCEDURE 1. REMOVE TONGUE PLATE STOPPER (a) Slide the tong ...

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    KIA Niro EV / Hybrid (SG2) - (2021-2023) - Owner's manual

    © 2017-2023 Copyright www.tochr.net
    0.012