Toyota Sienna Service Manual: Terminals of ECM

Problem symptoms table

HINT:  Use the table below to help determine the cause of the problem symptom. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Re ...

Diagnosis system

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

Other materials:

Occupant Classification System Malfunction
DTC B1150/23 Occupant Classification System Malfunction DESCRIPTION The occupant classification system circuit consists of the center airbag sensor assembly and the occupant classification ECU. If the center airbag sensor assembly receives signals from the occupant classification ECU, it d ...

Vehicle Position Mark Deviates Greatly
INSPECTION PROCEDURE 1 CHECK GPS MARK Check that the GPS mark is displayed. OK: GPS mark is displayed 2 CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE) Enter the "Navigation Check" mode (Vehicle Sensors).  While driving the vehicle, compare the "Speed" i ...

On-vehicle inspection
1. INSPECT OCCUPANT CLASSIFICATION ECU (VEHICLE NOT INVOLVED IN COLLISION)  Perform a diagnostic system check. 2. INSPECT OCCUPANT CLASSIFICATION ECU (VEHICLE INVOLVED IN COLLISION) Perform a diagnostic system check.  Even if the airbag was not deployed, check if there is ...