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 |
Front Blower Motor
Inspection
INSPECTION
PROCEDURE
1. INSPECT BLOWER MOTOR
(a) Inspect the blower motor.
(1) Connect the positive (+) lead from to terminal 1 and negative (-)
lead to terminal 2, then check that the motor operates smoothly.
CAUTION:
Use safety glasses
Do ...
Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION
The navigation receiver assembly sends a sound signal to the stereo component
amplifier assembly via this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier
assembly, and then is sent to the speakers.
If there is an open or short in the cir ...
Front Radar Sensor (C1A10)
DESCRIPTION
C1A10 is output when there is an internal malfunction in the millimeter wave
radar sensor assembly.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
C1A10
Front Radar Sensor
W ...