Audio Visual

Toyota Lexus Gs430, Gs300. Uzs190 Grs190

AUDIO / VISUAL

AUDIO AND VISUAL SYSTEM

SYSTEM DESCRIPTION

HOW TO PROCEED WITH TROUBLESHOOTING

IDENTIFICATION OF NOISE SOURCE

PROBLEM SYMPTOMS TABLE

TERMINALS OF ECU

DTC CHECK / CLEAR

DIAGNOSTIC TROUBLE CODE CHART

Pressing Power Switch does not Turn on System

No Sound can be Heard from Speakers (Audio is Mute)

Sound Quality is Bad in All Modes (Volume is Too Low)

Cassette Tape cannot be Ejected

Cassette Tape cannot be Inserted or Played

CD cannot be Ejected

CD cannot be Inserted / Played or CD is Ejected Right After Insertion

Radio Broadcast cannot be Received (Poor Reception)

Sound Quality is Bad Only when Playing Tape

Tape is Tangled due to Incorrect Tape Speed or Auto-Reverse Malfunction

Steering Pad Switch Circuit

Speaker Circuit

Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier

AVC-LAN Circuit between Radio Receiver and AMP

AVC-LAN Circuit between Radio Receiver and Gateway ECU

Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter

Radio Receiver Power Source Circuit

Stereo Component Amplifier Power Source Circuit

RADIO RECEIVER

MULTI-DISPLAY

STEREO COMPONENT AMPLIFIER

FRONT NO. 1 SPEAKER

FRONT NO. 2 SPEAKER

FRONT STEREO COMPONENT SPEAKER

STEREO COMPONENT SPEAKER

REAR SPEAKER

REAR NO. 2 SPEAKER

ROOF SPEAKER

RADIO ANTENNA CORD

AMPLIFIER ANTENNA

NETWORK GATEWAY ECU

STEERING PAD SWITCH

STEERING PAD SWITCH CABLE

MICROPHONE AMPLIFIER

WINDOW GLASS ANTENNA WIRE