Toyota Sienna Service Manual: Occupant classification ecu

Installation

1. INSTALL SEAT POSITION AIRBAG SENSOR  Check that the ignition switch is off. Check that the negative battery (-) terminal is disconnected. CAUTION: After disconnecting the neg ...

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) ...

Other materials:

Radio and Navigation Assembly Power Source Circuit
DESCRIPTION This is the power source circuit to operate the radio and navigation assembly. WIRING DIAGRAM INSPECTION PROCEDURE 1 INSPECT RADIO AND NAVIGATION ASSEMBLY Disconnect the radio and navigation assembly connector R15.  Measure the resistance according to the value ...

Engine Coolant Temperature Circuit Range / Performance Problem
DTC P0116 Engine Coolant Temperature Circuit Range / Performance Problem DESCRIPTION Refer to DTC P0115 DTC No. DTC Detection Condition Trouble Area P0116 ECTs as listed below are nearly same (2 trip detection logic):  ECT when engine is start ...

Operation flow
HINT: Perform troubleshooting in accordance with the procedures below. The following is an outline of basic troubleshooting procedures. Confirm the troubleshooting procedures for the circuit you are working on before beginning troubleshooting. VEHICLE BROUGHT TO WORKSHOP CUSTOMER PR ...