AUDIO AND VISUAL SYSTEM(for Radio and Display Type)

DTC Code	DTC Name
	HOW TO PROCEED WITH TROUBLESHOOTING

VEHICLE BROUGHT TO WORKSHOP

Result

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NEXT

CUSTOMER PROBLEM ANALYSIS

When troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

The following 5 items are important points in problem analysis:

What	Vehicle model, system name
When	Date, time, occurrence frequency
Where	Road conditions
Under what conditions?	Driving conditions, weather conditions
How did it happen?	Problem symptoms

Result

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NEXT

INSPECT BATTERY VOLTAGE

Measure the battery voltage with the engine switch off.

Standard voltage
11 to 14 V

If the voltage is below 11 V, recharge or replace the battery.

Result

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NEXT

CHECK CABIN

Check that condensation is not likely to occur in the cabin, and that the temperature is not high or extremely low in the cabin.

OK
Check that condensation is not likely to occur in the cabin, and that the temperature is not high or extremely low in the cabin.

Tech Tips

A humid cabin and a rapid change in temperature may lead to condensation. Condensation in the cabin may cause a short circuit.
The audio and visual system may not operate normally when the temperature is -20°C (-4°F) or less, or 65°C (149°F) or higher.

Result

Proceed to
OK
NG

NG

SET CABIN TO APPROPRIATE TEMPERATURE

OK

CHECK CAN COMMUNICATION SYSTEM*

Check for DTC output.

for LHD with Central Gateway ECU: Click here
for LHD without Central Gateway ECU: Click here
for RHD with Central Gateway ECU: Click here
for RHD without Central Gateway ECU: Click here

Result

Result	Proceed to
CAN DTCs are not output	A
CAN DTCs are output (for LHD with Central Gateway ECU)	B
CAN DTCs are output (for LHD without Central Gateway ECU)	C
CAN DTCs are output (for RHD with Central Gateway ECU)	D
CAN DTCs are output (for RHD without Central Gateway ECU)	E

B

GO TO CAN COMMUNICATION SYSTEM Click here

C

GO TO CAN COMMUNICATION SYSTEM Click here

D

GO TO COMMUNICATION SYSTEM Click here

E

GO TO CAN COMMUNICATION SYSTEM Click here

A

DTC CLEAR*

Refer to DTC Check/Clear.

Click here

Result

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NEXT

RECHECK FOR DTC*

Refer to DTC Check/Clear.

Click here

Tech Tips

Even if the malfunction symptom is not confirmed, check for diagnostic trouble codes. This is because the system stores past diagnostic trouble codes.
After the check using the GTS, check the "System Check Mode" screen as necessary.
Check the diagnostic trouble code and inspect the area code indicates.

Result

Result	Proceed to
DTC is output	A
DTC is not output	B

A

GO TO STEP 10 Click here

B

PROBLEM SYMPTOMS TABLE

Refer to Problem Symptoms Table.

Click here

Result

Result	Proceed to
Fault is not listed in Problem Symptoms Table	A
Fault is listed in Problem Symptoms Table	B

Tech Tips

If the symptom does not recur and no DTC is output, perform the symptom reproduction method .

Click here

B

GO TO STEP 10 Click here

A

CHECK ECU TERMINAL ARRANGEMENT BASED ON MALFUNCTION SYMPTOM

Refer to Terminals of ECU.

Click here

Result

Proceed to
NEXT

CHECK CIRCUIT

Result

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NEXT

RECHECK FOR DIAGNOSTIC TROUBLE CODE

Tech Tips

After clearing DTCs, recheck for DTCs.

Result

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NEXT

PERFORM CONFIRMATION TEST

Result

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NEXT

END

AUDIO AND VISUAL SYSTEM(for Radio and Display Type) HOW TO PROCEED WITH TROUBLESHOOTING