Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VJ7J |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 - 11/2017] |
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver; 2016 - 2017 MY Sienna [12/2015 - 11/2017] |
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:
If the DCM (telematics transceiver) has been replaced, perform the DCM Activation procedure using the Techstream (See page
).
PROCEDURE
1.
|
INSPECT DCM (TELEMATICS TRANSCEIVER)
|
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Switch Condition
|
Specified Condition
|
D73-17 (MUTE) - Body ground
|
Ignition switch ACC
Audio system playing
→ Emergency call mode
|
2.0 V or higher
→ Below 1 V
|
Text in Illustration
*a
|
Component with harness connected
(DCM (Telematics Transceiver))
|
|
|
OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
(See page
)
|
NG
|
|
|
2.
|
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER))
|
(a) Disconnect the L5 stereo component amplifier assembly connector.
(b) Disconnect the D73 DCM (telematics transceiver) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
L5-24 (TMUT) - D73-17 (MUTE)
|
Always
|
Below 1 Ω
|
L5-24 (TMUT) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
3.
|
INSPECT STEREO COMPONENT AMPLIFIER 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
|
D73-17 (MUTE) - Body ground
|
Ignition switch ACC
|
2.0 V or higher
|
Text in Illustration
*a
|
Front view of wire harness connector
(to DCM (Telematics Transceiver))
|
|
|
|