AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2018 - 2020 MY Sienna [11/2017

Last Modified: 04-05-2023	6.11:8.1.0	Doc ID: RM1000000018F6K
Model Year Start: 2018	Model: Sienna	Prod Date Range: [11/2017 - ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2018 - 2020 MY Sienna [11/2017 - ]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the audio and visual system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

When troubleshooting, check 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 for 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

3.	INSPECT BATTERY

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

HINT:

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

4.	CHECK CABIN

(a) 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:

Condensation is not likely being produced and the temperature is not high or extremely low.

HINT:

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 lower, or 65°C (149°F) or higher.

SET CABIN TO APPROPRIATE TEMPERATURE

5.	CHECK CAN COMMUNICATION SYSTEM*

(a) Check if CAN communication system DTCs are output.

Click here

Result	Proceed to
CAN DTCs are not output.	A
CAN DTCs are output.	B

GO TO CAN COMMUNICATION SYSTEM

6.	CHECK FOR DTC*

(a) Check for DTCs and note any codes that are output.

Click here

HINT:

Even if the malfunction symptom is not confirmed, check the DTCs. This is because the system stores past DTCs.

(b) Clear the DTCs.

Click here

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

GO TO STEP 8

7.	DIAGNOSTIC TROUBLE CODE CHART

(a) Find the output code in the Diagnostic Trouble Code Chart.

Click here

GO TO STEP 10

8.	PROBLEM SYMPTOMS TABLE

(a) Refer to the Problem Symptoms Table.

Click here

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

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

9.	OVERALL ANALYSIS AND TROUBLESHOOTING

(a) Terminals of ECU.

Click here

10.	ADJUST, REPAIR OR REPLACE

11.	RECHECK FOR DTC*

(a) Clear the DTCs.

Click here

(b) Recheck for DTCs by simulating the operation indicated by the DTCs.

Click here

12.	CONFIRMATION TEST

END