Toyota Sienna Service Manual: Repair instruction

Identification information

VEHICLE IDENTIFICATION AND SERIAL NUMBERS 1. VEHICLE IDENTIFICATION NUMBER (a) The vehicle identification number is stamped on the vehicle identification number plate and the certification label, ...

Precaution

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Other materials:

Push Switch / Key Unlock Warning Switch Malfunction
DTC B2780 Push Switch / Key Unlock Warning Switch Malfunction DESCRIPTION This DTC will be output if the transponder key ECU does not detect that the unlock warning switch is on even when the ignition switch is on (Under the normal conditions, the unlock warning switch is on when the ignitio ...

Installation
HINT:  Use the same procedures for the RH side and LH side.  The procedures listed below are for the LH side. 1. INSTALL FRONT AIRBAG SENSOR LH  Check that the ignition switch is off.  Check that the battery negative (-) terminal is disconnected. CAUTION: ...

ECM / PCM Processor
DESCRIPTION The ECM continuously monitors its internal processors (CPUs), A/F sensor transistors and heated oxygen sensor (HO2S) transistors. This self-check ensures that the ECM is functioning properly. These are diagnosed by internal "mirroring" of the main and sub CPUs to det ...