To display the recheck process follow the sequence indicated Display Screen for Service Check

2. DIAGNOSIS CODE LIST

Physical address: 190 Radio receiver assembly

Logical address

DTC

Diagnosis item

Diagnosis content

Countermeasure and inspected parts

(Communication Control)

21

ROM Error

Error is detected in internal ROM.

Replace radio receiver assembly.

(Communication Control)

22

RAM Error

Error is detected in internal RAM.

Replace radio receiver assembly.

(Communication Control)

D6

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, radio receiver assembly assembly was disconnected.

• Check harness for power supply system ofradio receiver assembly.

• Check harness for communication system ofradio receiver assembly.

• Check harness for power supply system of radio receiver assembly.

• Check harness for communication system of radio receiver assembly.

(Communication Control)

D8

No Response to Connection Check

Component shown by auxiliary code is or had been disconnected from system after engine start. D9

• Check harness for power supply system of component shown by auxiliary code.

• Check harness for communication system of component shown by auxiliary code.

(Communication Control)

D9

Last Mode Error

Component operated (sounds and/ or images were provided) before engine stop is or has been disconnected with ignition switch in ACC or ON.

Check harness for power supply system of component shown by auxiliary code.

Check harness for communication system of component shown by auxiliary code.

(Communication Control)

DA

No Response to ON/OFF Instruction

No response is identified when changing mode (audio and visual mode change). Detected when sound and picture does not change by button operation.

• Check harness for power supply of component shown by auxiliary code.

• Check harness for communication system of component shown by auxiliary code.

• If error occurs again, replace component shown by auxiliary code.

(Communication Control)

DB

Mode Status Error

Dual alarm is detected.

• Check harness for power supply of component shown by auxiliary code.

• Check harness for communication system of component shown by auxiliary code.

(Communication Control)

DC

Transmission Error

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

• If same auxiliary code is recorded in other component, check harness for power supply and communication system of components shown sub code.

(Communication Control)

(Momentary

Interruption)

After engine is started, radio receiver assembly assembly was disconnected from system.

• If this error occurs frequently, replace radio receiver assembly assembly.

(Communication Control)

DE

Slave Reset (Momentary Interruption)

After engine is started, slave component was disconnected from system.

• Check harness for power supply of component shown by auxiliary code.

• Check harness for communication system of component shown by auxiliary code.

(Communication Control)

DF

Master Error

Due to defective condition ofradio receiver assembly, master function is switched to audio equipment. Error occurs in communication between sub-master (audio) andradio receiver assembly.

• Check harness for power supply of radio receiver assembly assembly.

• Check harness for communication system of radio receiver assembly .

• Check harness for communication system between radio receiver assembly and sub-master component.

(Communication Control)

E0

Registration Completion Instruction Error

"Registration Completion Instruction" command fromradio receiver assembly cannot be received.

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

(Communication Control)

E1

Audio processor ON error

While source equipment is operating, AMP output is stopped.

• Check harness for power supply of radio receiver assembly assembly.

• Check harness for communication system of radio receiver assembly.

(Communication Control)

Instruction

Parameter

Error occurs in ON/OFF controlling command from radio receiver assembly assembly.

• Replace radio receiver assembly

(Communication Control)

Registration

Request

Transmission

Registration Request command is output from slave component. Receiving 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.

(Communication Control)

E4

Plural Frame Abort

Plural frame transmission is aborted.

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

(Radio receiver assembly)

44

AM Tuner Error FM Tuner Error

Abnormal condition is detected in AM tuner.

Inspect radio receiver assembly.

Replace radio receiver assembly.

(Radio receiver assembly)

Abnormal condition is detected in FM tuner.

Replace radio receiver assembly.

(Cassette switch)

40

Mechanical or Media Error

Malfunction due to mechanical failure is identified. Or, cassette tape is cut or entangled.

Inspect cassette tape.

(Cassette switch)

41

EJECT Malfunction

Malfunction due to mechanical failure.

Replace radio receiver assembly.

Physical address: 440 Strereo component amplifier HINT:

*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. angain agter engine start. *3: It may be stored whn the engine key is turned again after engine start.

*4: When 210 sec. has passed after pulling out the power supply connectorof the master component with the ignition switch in ACC or ON, this code is stored.

Logimal address

DTC

Diagnosis item

Diagnosis content

Countermeasure and inspeced parts

(Communication Control)

21

ROM Error

Abnormal condition of ROM is detected.

Replace stereo component amplifier

(Communication Control)

22

RAM Error

Abnormal condition of RAM is detected.

Replace stereo component amplifier

(Communication Control)

*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-didplay assembly was disconnected.

• Check harness for power supply system ofradio receiver assembly.

• Check harness for communication system ofradio receiver assembly.

• Check harness for power supply system of stereo component amplifier

• Check harness for communication system of stereo component amplifier.

(Communication Control)

D7

Connection Check Error

Component in which this code is recorded has been disconnected from system after engine start. Or, when this code was recorded, radio receiver assembly assembly was disconnected. D6

• Check harness for power supply system ofradio receiver assembly.

• Check harness for communication system of radio receiver assembly.

• Check harness for power supply system of stereo component amplifier

• Check harness for communication system of stereo component amplifier.

(Communication Control)

*2

Transmission Error

Transmission to component shown by auxiliary code has bee failed. (This code does not necessarily mean actual failure.)

If same auxiliary code is recorded in other component(s), check harness for power supply and communication system of components shown sub code.

(Communication Control)

(Momentary

Interruption)

After engine is started, radio receiver assembly assembly was disconnected from system.

• Check harness for power supply system of radio receiver assembly assembly.

• Check harness for communication system of radio receiver assembly assembly.

• If error occurs frequently, replace radio receiver assembly.

(Communication Control)

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 radio receiver assembly assembly.

• Check harness for communication system of radio receiver assembly assembly.

• Check harness for communication system between radio receiver assembly and sub-master component.

(Communication Control)

*1

Registration Completion Instruction Error

"Registration Completion Instruction" command fromradio receiver assembly cannot be received.

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

(Communication Control)

*1

Audio processor ON error

While source equipment is operating, AMP output is stopped.

• Check harness for power supply system of radio receiver assembly

• Check harness for communication system of radio receiver assembly.

(Communication Control)

Instruction

Parameter

Error is detected in ON/OFF control command from radio receiver assembly assembly.

Replace radio receiver assembly .

(Communication Control)

Registration

Request

Transmission

• Registration Request command is output from slave component.

• By reception of connection check Instruction, Registration Request command is output from sub-master component.

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

3. PROBLEM SYSMPTOMS TABLE NOTICE:

When replacing the internal mechanism (computer part) of the audio system, be careful that no part of your body or clothing comes in contact with the terminals of the leads from the IC, etc. of the replacement part (spare part).

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