Toyota Sienna Service Manual: Terminals of ECU

Problem symptoms table

HINT: Proceed to the troubleshooting for each circuit in the table below. AIRBAG SYSTEM Symptom Suspected Area The SRS warning light goes off after the primary check, ...

Diagnosis system

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

Other materials:

Removal
1. REMOVE ENGINE AND TRANSAXLE HINT: (See page EM-26) 2. REMOVE AUTOMATIC TRANSMISSION WITH TRANSFER HINT: (See page AX-164) 3. REMOVE NO. 1 TRANSFER CASE PLUG (a) Remove the No. 1 transfer case plug. (b) Remove the No. 1 gasket from the transfer case No. 1 plug. 4. REMOVE NO. 2 T ...

On-vehicle inspection
1. FRONT SEAT SIDE AIRBAG ASSEMBLY (VEHICLE NOT INVOLVED IN COLLISION)  Perform a diagnostic system check.  With the front seat side airbag assembly installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the front seatback ass ...

Air Intake Control Circuit
DESCRIPTION The air cleaner is equipped with two inlets, one of which is opened or closed by the Air Intake Control Valve (AICV). This system reduces intake noise and increases engine power at low-to-high engine speed range. When the engine is operating in the low-to-mid speed range, this ...