Toyota Sienna Service Manual: 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 any damage to the occupant classification ECU. If there are any defects as mentioned below, replace the occupant classification ECU with a new one:
- Cracks, dents or chips on the case.
- Cracks or other damage to the connector.
CAUTION: Be sure to follow the correct removal and installation procedures.
Occupant classification ECU
COMPONENTS
...
Removal
1. PRECAUTION
CAUTION:
Be sure to read "PRECAUTION" thoroughly before servicing.
2. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
CAUTION:
Wait for 90 seconds after disconnecting the ...
Other materials:
How to proceed with
troubleshooting
HINT:
The intelligent tester can be used in steps 2, 3, 4, 6 and 9.
1 VEHICLE BROUGHT TO WORKSHOP
2 CONNECT INTELLIGENT TESTER TO DLC3
HINT:
If the display indicates a communication fault in the tester,
inspect the DLC3.
3 CHECK DTC AND FREEZE FRAME DATA
Check for DTC(s) and freeze frame ...
Air outlets
Location of air outlets
The air outlets and air volume
changes according to the
selected air flow mode.
Adjusting the position of the air outlets
Direct air flow to the front or
rear, up or down.
Temperature display
The temperature display on the multi-information display can be chan ...
Mute Signal Circuit between Radio and Navigation Assembly and
Stereo Component Amplifier
DESCRIPTION
This circuit sends a signal to the stereo component amplifier to mute noise.
Because of that, the noise
produced by changing the sound source ceases.
If there is an open in the circuit, noise can be heard from the speakers when
changing the sound source.
If there is a short i ...