Toyota Sienna Service Manual: Terminals of ECU

Problem symptoms table

HINT: Proceed to the troubleshooting for each circuit in the table below. Occupant Classification System Symptom Suspected area The front passenger seat condition differ ...

Diagnosis system

1. CHECK DLC3  The ECU uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and meets the ISO 15765-4 format. NOTICE: *: Before measuri ...

Other materials:

A/F Sensor Circuit Slow Response
HINT: DTC P2A00 indicates malfunctions related to the bank 1 A/F sensor. DTC P2A03 indicates malfunctions related to the bank 2 A/F sensor. Bank 1 refers to the bank that includes cylinder No. 1. Bank 2 refers to the bank that includes cylinder No. 2. Sensor 1 refers to the sensor mo ...

For vehicles equipped with catalytic converter
CAUTION: If a large amount of unburned gasoline or gasoline vapors flow into the converter, it may cause overheating and create a fire hazard. To prevent this, observe the following precautions: (a) Use only unleaded gasoline. (b) Avoid idling the engine for more than 20 minutes. (c) ...

Problem symptoms table
HINT: If a normal code is displayed during the diagnostic trouble code check although the trouble still occurs, check the electrical circuits for each symptom in the order given in the charts on the following pages and proceed to the page given for troubleshooting. The Matrix Chart is ...