Toyota Sienna Service Manual: Basic inspection
When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out in all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location of the problem can be found quickly and efficiently. Therefore, using this check is essential when engine troubleshooting.
1 CHECK BATTERY VOLTAGE
| NOTICE: Carry out this check with the engine stopped and ignition switch off. |
Result 
2 CHECK WHETHER ENGINE CRANKS
3 CHECK WHETHER ENGINE STARTS
4 CHECK AIR FILTER
(a) Visually check that the air filter is not excessively contaminated with dirt or oil.
5 CHECK IDLING SPEED
(a) Check the idling speed (See page EM-2).
6 CHECK FUEL PRESSURE
(a) Check the fuel pressure (See page FU-7).
7 CHECK FOR SPARKS
(a) Check for sparks (See page ES-217).
PROCEED TO PROBLEM SYMPTOMS TABLE
Check for intermittent problems
1. CHECK FOR INTERMITTENT PROBLEMS
HINT:
For use of the intelligent tester only:
Inspect the vehicle's ECM using check mode.
Intermittent problems are easier to detect with an
intelligent teste ...
Registration
NOTICE:The Vehicle Identification Number (VIN) must be
input
into the replacement ECM.
HINT:
The VIN is a 17-digit alphanumeric vehicle identification
number. The intelligent tes ...
Other materials:
Center Airbag Sensor Assembly Communication
Circuit Malfunction
DTC B1790 Center Airbag Sensor Assembly Communication
Circuit Malfunction
DESCRIPTION
The center airbag sensor assembly communication circuit consists of the
occupant classification ECU and
the center airbag sensor assembly.
DTC B1790 is recorded when a malfunction is detected in the center ...
U151e automatic transaxle
SERVICE DATA
TORQUE SPECIFICATIONS
...
Adjustment
HINT:
On the RH side, use the same procedures as on the LH
side.
Since a centering bolt is used as door hinge mounting
bolts on the body side and the door side, the door cannot
be adjusted with them on. Substitute a bolt with a washer
for the centering bolt.
1. INSPECT BACK DOOR PAN ...
