Toyota RAV4 manuals

Toyota Sienna Service Manual: Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

Toyota Sienna Service Manual / Audio / visual / Audio and visual system / Diagnostic trouble code chart / 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

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO JACK ADAPTER)

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO JACK ADAPTER)

  1. Disconnect the connectors from the stereo jack adapter and radio receiver.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance

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:

Diagnosis system
1. CHECK DLC3 The vehicle's ECU uses ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. NOTICE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not ope ...

Disassembly
1. REMOVE CONTROL KNOB SUB-ASSEMBLY (for Manual Air Conditioning System) (a) Remove the control knob sub-assembly. 2. REMOVE AIR CONDITIONING CONTROL BULB (a) Remove the air conditioning control bulb. Reassembly 1. INSTALL AIR CONDITIONING CONTROL BULB 2. INSTALL CONTROL KNOB SUB-ASSEM ...

Front Occupant Classification Sensor LH Collision Detection
DTC B1785 Front Occupant Classification Sensor LH Collision Detection DESCRIPTION DTC B1785 is output when the occupant classification ECU receives a collision detection signal sent by the front occupant classification sensor LH if an accident occurs. DTC B1785 is also output when the front ...

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