Toyota Sienna Service Manual: Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION
The stereo jack adapter sends an external device sound signal to the radio receiver through this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier or radio receiver, and then is sent to the speakers.
If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier, radio receiver, or speakers.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO JACK ADAPTER)
- Disconnect the connectors from the stereo jack adapter and radio receiver.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
*1: 10 Speaker System
*2: 6 Speaker with Rear Entertainment System
*3: 6 Speaker without Rear Entertainment System
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Sound Signal Circuit between Radio Receiver and Television Display
Assembly
DESCRIPTION
The television display assembly sends a sound signal to the radio receiver
through this circuit.
The sound signal that has been sent is amplified by the stereo component
amplifier ...
Mute Signal Circuit between Radio Receiver and Stereo Component
Amplifier
DESCRIPTION
This circuit sends a signal to the stereo component amplifier to mute noise.
Because of that, the noise
produced by changing the sound source ceases.
If there is an open in the circ ...
Other materials:
Freeze frame data
1. FREEZE FRAME DATA
(a) Whenever a DTC is detected or the ABS operates,
the skid control ECU stores the current vehicle
(sensor) state as freeze frame data.
The skid control ECU stores the number of times
(maximum: 31) the ignition switch has been turned
from OFF to the ON position since th ...
Precaution
1. INITIALIZATION
NOTICE:
Perform RESET MEMORY (AT initialization) when
replacing the automatic transaxle assembly, engine
assembly or ECM.
Perform REGISTRATION (VIN registration) when
replacing the ECM.
HINT:
Initialization cannot be completed by only removing the
batt ...
Turbine Speed Sensor Circuit No Signal
DESCRIPTION
This sensor detects the rotation speed of the input turbine. By comparing the
input turbine speed signal
(NT) with the counter gear speed sensor signal (NC), the ECM detects the shift
timing of the gears and
appropriately controls the engine torque and hydraulic pressure accor ...
