Toyota Tundra Service Manual: Basic Inspection

Toyota Tundra Service Manual / Engine, Hybrid System / 1ur-fe Engine Control / Sfi System / Basic Inspection

CAUTION / NOTICE / HINT

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 performing engine troubleshooting.

PROCEDURE

1.	CHECK BATTERY VOLTAGE

NOTICE:

Conduct this check with the engine stopped and ignition switch off.

Result	Proceed to
11 V or more	OK
Below 11 V	NG

CHARGE OR REPLACE BATTERY

2.	CHECK WHETHER ENGINE WILL CRANK

PROCEED TO PROBLEM SYMPTOMS TABLE

3.	CHECK WHETHER ENGINE STARTS

GO TO STEP 6

4.	CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

(a) Visually check that the air filter is not excessively contaminated with dirt or oil.

REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

5.	CHECK IDLING SPEED

TROUBLESHOOT IDLING SPEED AND PROCEED TO NEXT STEP

6.	CHECK FUEL PRESSURE

TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP

7.	CHECK FOR SPARK

PROCEED TO PROBLEM SYMPTOMS TABLE

TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP

ACIS Control Circuit

Brake Override System

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