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 ...

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:

Removal
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 2. DRAIN ENGINE COOLANT 3. REMOVE FRONT WIPER ARM HEAD CAP (See page WW-4) 4. REMOVE FRONT WIPER ARM RH (See page WW-4) 5. REMOVE FRONT WIPER ARM LH (See page WW-4) 6. REMOVE COWL TOP VENTILATOR LOUVER SUBASSEMBLY (See page WW-4) 7. REMOVE ...

On-vehicle inspection
1. INSPECT SEAT POSITION SENSOR (VEHICLE NOT INVOLVED IN COLLISION)  Perform a diagnostic system check. 2. INSPECT SEAT POSITION SENSOR (VEHICLE INVOLVED IN COLLISION)  Perform a diagnostic system check.  Even if the airbag was not deployed, check if there is any dama ...

Terminals of ECU
1. CHECK DRIVER SIDE J/B ASSEMBLY (MULTIPLEX NETWORK BODY ECU)  Disconnect the B6, 1C, 1K and 1L J/B connectors. Measure the voltage and resistance according to the value(s) in the table below. HINT: If the result is not as specified, there may be a malfunction on the w ...