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:
Installation
1. INSTALL BRAKE VACUUM CHECK VALVE
ASSEMBLY
(a) Install the brake vacuum check valve assembly and
check valve grommet to the brake booster
assembly.
2. INSTALL BRAKE BOOSTER GASKET
(a) Install a new brake booster gasket to the brake
booster with master cylinder.
3. INSTALL BRAKE MASTER CYLI ...
Front Airbag Sensor RH Circuit Malfunction
DTC B1148/36 Front Airbag Sensor RH Circuit Malfunction
DESCRIPTION
The front airbag sensor RH circuit consists of the center airbag sensor
assembly and front airbag sensor
RH. If the center airbag sensor assembly receives signals from the front airbag
sensor RH, it judges
whether or not the ...
Remote Up / Down Function does not Operate
DESCRIPTION
If the REMOTE UP/DOWN function does not operate, any of the following
troubles may be the cause:
There is an open or short circuit in the wiring between the power
window master switch and the
applicable power window regulator switch.
The power window master swit ...
