Toyota Tundra Service Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedures to troubleshoot the key reminder warning system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

INSPECT BATTERY VOLTAGE

Standard Voltage:

11 to 14 V

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

NEXT

3.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B

B

GO TO CAN COMMUNICATION

A

4.

PROBLEM SYMPTOMS TABLE

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) Operation Check

Click here

(b) Terminals of ECU

Click here

(c) DATA LIST/ACTIVE TEST

Click here

NEXT

6.

REPAIR OR REPLACE

NEXT

7.

CONFIRMATION TEST

NEXT

END

    Data List / Active Test

    Key Reminder Buzzer does not Sound

    See More:

    Toyota Tundra Service Manual > Audio And Visual System: D-Seat ECU Vehicle Information Reading/Writing Process Malfunction (B15F8)
    DESCRIPTION This DTC is stored when items controlled by the position control ECU and switch assembly cannot be customized via the audio and visual system vehicle customization screen. HINT: The position control ECU and switch assembly controls the front power seat control system related items that a ...

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