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
- Visually check that the air filter is not excessively contaminated with dirt or oil.
5 CHECK IDLING SPEED
- Check the idling speed
6 CHECK FUEL PRESSURE
- Check the fuel pressure
7 CHECK FOR SPARKS
- Check for sparks
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 tester is required ...
Other materials:
Selecting conventional constant speed control mode
Constant speed control mode differs from vehicle-to-vehicle distance
control mode. When constant speed control mode is selected, your
vehicle will maintain a set speed regardless of whether or not there
are other vehicles in the lane ahead.
Press the “ON-OFF” button to
activate the ...
Rear Speed Sensor RH Circuit
DESCRIPTION
Refer to DTCs C0200/31, C0205/32, C1235/35, and C1236/36 (See page BC-17).
DTCs C1273/73 to C1278/78 can be deleted when the speed sensor sends a vehicle
speed signal or the
Test Mode ends. DTCs C1273/73 to C1278/78 are output only in the Test Mode.
HINT:
DTC C0210/33 ...
Reassembly
1. INSTALL LIGHT CONTROL ECU (DISCHARGE HEADLIGHT)
Install a new headlight leveling motor base packing.
Install the headlight leveling motor assembly as
shown in the illustration.
Connect the connector with the claw
Install the light control ECU with the 2 ...
