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

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