Physical Address: 440 Stereo Component Amplifier

WARNING: This page is about a different car, the 2003 Lexus GS 430 and 2003 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.

HINT: See footnotes in table.

Logical address: 01 (Communication control)

LOGICAL ADDRESS - 01 (COMMUNICATION CONTROL)

DTC

Diagnosis item

Diagnosis content

Countermeasure and inspected parts

D6 ⁽¹⁾

Absence of Master

Component in which this code is recorded has been disconnected from system with ignition in ACC or ON. Or, when this code was recorded, multi-display assembly was disconnected.

Check harness for power supply of radio receiver assembly.
Check harness for communication system of radio receiver assembly.
Check harness for power supply of stereo component amplifier.
Check harness for communication system of stereo component amplifier.

Communication Check Error

Component in which this code is recorded is or was disconnected from system after engine start. Or, when recording this code, multi-display assembly was disconnected.

Check harness for power supply of radio receiver assembly.
Check harness for communication system of radio receiver assembly.
Check harness for power supply of stereo component amplifier.
Check harness for communication system of stereo component amplifier.

DC ⁽²⁾

Transmission Error

Transmission to component shown by auxiliary code has been failed. (Detecting this DTC does not necessarily mean actual failure.)

If same auxiliary code is recorded in order component, check harness for power supply and communication system of all components shown by code.

DD ⁽³⁾

Master Reset (Momentary Interruption)

After engine is started, multi-display assembly was disconnected from system.

Check harness for power supply of radio receiver assembly.
Check harness for communication system of radio receiver assembly.
Check harness for power supply of stereo component amplifier.
Check harness for communication system of stereo component amplifier.
If this error occurs frequently, replace multi-display assembly.

DF ⁽⁴⁾

Master Error

Due to defective condition of component with a display, master function is switched to audio equipment. Error occurs in communication between sub-master (audio) and master component.

Check harness for power supply of multi-display assembly.
Check harness for communication system of multi-display assembly.
Check harness for communication system between multi-display assembly and sub-master component.

E0 ⁽¹⁾

Registration Completion Instruction Error

"Registration Completion Instruction" command from master cannot be received.

Since this DTC is provided for engineering purpose, it may be detected when no actual failure exists.

E1 ⁽¹⁾

Audio processor ON error

While source equipment is operating, AMP output is stopped.

Check harness for power supply of multi-display assembly.
Check harness for communication system of multi-display assembly.

ON/OFF Instruction Parameter Error

Error occurs in ON/OFF controlling command from multi-display assembly.

Replace multi-display assembly.

E3 ⁽¹⁾

Registration Request Transmission

Registration Request command is output from slave component.
Registration Connection Check Instruction, Registration Request command is output from sub-master component.

Since this DTC is provided for engineering purpose, it may be detected when no actual failure exists.

⁽¹⁾	Even if no failure is detected, it may be stored depending on the battery condition or voltage for starting an engine.

⁽²⁾	It may be stored when the engine key is turned 1 min. again after engine start.

⁽³⁾	It may be stored when the engine key is turned again after engine start.

⁽⁴⁾	When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.