Toyota Tundra Service Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the audio and visual system.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

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

NEXT

3.

INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

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

NEXT

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 less, or 65°C (149°F) or higher.
NG

SET CABIN TO APPROPRIATE TEMPERATURE

OK

5.

CHECK FOR DTC

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

Click here

(b) Clear the DTCs.

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

Result

Proceed to

DTC is output again

A

DTC is not output

B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

6.

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

B

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

A

7.

PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM

(a) Terminals of ECU

Click here

NEXT

8.

ADJUST, REPAIR OR REPLACE

NEXT

9.

RECHECK FOR DIAGNOSTIC TROUBLE CODE

HINT:

After clearing DTCs, recheck for DTCs.

Click here

NEXT

10.

CONFIRMATION TEST

NEXT

END

    Freeze Frame Data

    Illumination Circuit

    See More:

    Toyota Tundra Service Manual > Rear View Monitor System(for Navigation Receiver Type): Problem Symptoms Table
    PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected ...

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