Toyota Tundra Service Manual: 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 areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Wireless door lock control system

Symptom	Suspected Area	See page
Only wireless control function is inoperative	Proceed to "Only Wireless Control Function is Inoperative"
Only answer-back function does not operate normally	Proceed to "No Answer-Back"
When returning to the vehicle, although door unlock operation was not performed, doors were in an unlocked state.	Power door lock control system
When returning to the vehicle, although door lock operation was not performed, doors were in a locked state.	Power door lock control system

Toyota Tundra Service Manual > Occupant Classification System: Rear Occupant Classification Sensor RH Collision Detection (B1788)
DESCRIPTION DTC B1788 is set when the occupant classification ECU receives a collision detection signal, which is sent by the occupant detection sensor rear RH when an accident occurs. DTC B1788 is also set when the front seat frame with adjuster RH is subjected to a strong impact, even if an actual ...

Toyota Tundra Owners Manual