Toyota Tundra Service Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedures to troubleshoot the seat belt 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 FOR DTC*

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

(b) Clear the DTCs.

(c) Recheck for DTCs. Based on the DTCs output above, try to cause the output of the same CAN system DTC, airbag system DTC or occupant classification system DTC by simulating the symptoms indicated by the DTC.

Result

Proceed to

DTC output does not reoccur

A

CAN communication system DTC output reoccurs

B

Airbag system DTC output reoccurs

C

Occupant classification system DTC output reoccurs

D

B

GO TO CAN COMMUNICATION SYSTEM

C

GO TO AIRBAG SYSTEM

D

GO TO OCCUPANT CLASSIFICATION SYSTEM

A

4.

PROBLEM SYMPTOMS TABLE

(a) Refer to the problem symptoms table.

Click here

NEXT

5.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation check

Click here

(b) Data List / Active Test

Click here

(c) Terminals of ECU

Click here

NEXT

6.

REPAIR OR REPLACE

NEXT

7.

CONFIRMATION TEST

NEXT

END

    Front Passenger Side Seat Belt Warning Light Malfunction

    Operation Check

    See More:

    Toyota Tundra Service Manual > Occupant Classification System: System Description
    SYSTEM DESCRIPTION 1. GENERATION DESCRIPTION (a) The occupant classification system determines whether the front passenger seat is occupied by an adult or child (with child seat) or is unoccupied, based on the load that is applied to the front passenger seat and whether the seat belt is buckled. The ...

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