Toyota Tundra Service Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use these procedures to troubleshoot the window defogger system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

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 before proceeding.

NEXT

3.

CHECK LIN COMMUNICATION SYSTEM

(a) Check if the LIN communication system is functioning normally.

Click here

Result

Proceed to

LIN communication system is normal

A

LIN communication system is not normal

B

B

GO TO LIN COMMUNICATION SYSTEM

A

4.

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

GO TO STEP 6

A

5.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU

Click here

(b) Data List / Active Test

Click here

(c) Operation Check

Click here

NEXT

6.

REPAIR OR REPLACE

NEXT

7.

CONFIRMATION TEST

NEXT

END

    Data List / Active Test

    Operation Check

    See More:

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