Toyota Camry (XV70): 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.
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- 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.
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PROCEDURE
|
1. | INSPECT DCM (TELEMATICS TRANSCEIVER) |
| (a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
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| 2. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) |
(a) Disconnect the K10 stereo component amplifier 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 |
|---|---|---|
|
K10-24 (TMUT) - K140-14 (MUTE) |
Always | Below 1 Ω |
|
K10-24 (TMUT) or K140-14 (MUTE) - Body ground |
Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 3. |
INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY |
(a) Disconnect the K140 DCM (telematics transceiver) connector.
| (b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| OK | | REPLACE DCM (TELEMATICS TRANSCEIVER)
|
| NG | | REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY
|
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