Toyota Sienna Service Manual: Problem symptoms table

Customize parameters

1. Seat Belt Buzzer ON/OFF Setting The seat belt buzzer ON/OFF setting, which is a setting of the buzzer function of the combination meter, can disable the driver side seat belt buzzer and front p ...

Terminals of ECU

1. COMBINATION METER ASSEMBLY *1: with Power Rear No. 2 Seat with Stowing Function *2: with Theft Deterrent System  Waveform 1 (Reference) : Using an oscilloscope: OK ...

Other materials:

Differential system
PRECAUTION NOTICE: When disconnecting the negative (-) battery terminal, initialize the following systems after the terminal is reconnected. 1. Before disassembly, clean the outside of the rear differential assembly and remove any sand or mud to prevent it from entering the inside of the as ...

Diagnosis system
1. CHECK DLC3 (a) The vehicle's ECM uses the ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. HINT: Connect the cable of the intelligent tester to the DLC3, turn the ignition switch to the ON position and atte ...

Unlock Warning Switch Circuit
DESCRIPTION The unlock warning switch detects if the key is in the ignition key cylinder. The unlock warning switch turns on when the key is inserted into the ignition key cylinder and turns off when the key is removed from the cylinder. The body ECU is connected to the unlock warning swit ...