DESCRIPTION
This circuit sends a signal to the stereo component amplifier assembly to mute noise. Because of that, the noise produced by changing the sound source ceases.
If there is an open in the circuit, noise can be heard from the speakers when changing the sound source.
If there is a short in the circuit, even though the stereo component amplifier assembly is functioning normally, no sound or only an extremely faint sound can be heard.
WIRING DIAGRAM
PROCEDURE
1. |
INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY |
(a) Remove the stereo component amplifier assembly with connectors still connected.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY) |
(a) Disconnect the N25 navigation receiver assembly connector.
(b) Disconnect the S23 stereo component amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
N25-16 (MUT1) - S23-1 (MUTE) |
Always |
Below 1 Ω |
N25-16 (MUT1) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY (OUTPUT SIGNAL) |
(a) Reconnect the S23 stereo component amplifier assembly connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
OK | ![]() |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
NG | ![]() |
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY |
Antenna Coil Open / Short (B2784)
DESCRIPTION
When an open or short circuit is detected in the transponder key amplifier coil
built into the engine switch, the certification ECU (smart key ECU assembly) stores
this DTC. This DTC is also stored as a past DTC.
DTC Code
DTC Detection Condition
Tro ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the
table. Check each sy ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL TRANSFER POSITION SWITCH
(a) Attach the 2 claws to install the transfer position switch.
2. INSTALL AIR CONDITIONING CONTROL ASSEMBLY (for Automatic Air Conditioning
System)
(See page )
3. INSTALL INTEGRATION PANEL SUB-ASSEMBLY (for Manual Cooler System)
...