Engine Control - SFI System - Basic Inspection

1UR-FE ENGINE CONTROL: SFI SYSTEM: 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 performing engine troubleshooting.

1. CHECK BATTERY VOLTAGE

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





NG -- CHARGE OR REPLACE BATTERY
OK -- Continue to next step.

2. CHECK WHETHER ENGINE WILL CRANK

NG -- PROCEED TO PROBLEM SYMPTOMS TABLE
OK -- Continue to next step.

3. CHECK WHETHER ENGINE STARTS

NG -- GO TO STEP 6
OK -- Continue to next step.

4. CHECK AIR FILTER

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

NG -- REPLACE AIR FILTER
OK -- Continue to next step.

5. CHECK IDLING SPEED

NG -- TROUBLESHOOT IDLING SPEED AND PROCEED TO NEXT STEP
OK -- Continue to next step.

6. CHECK FUEL PRESSURE

NG -- TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP
OK -- Continue to next step.

7. CHECK FOR SPARK

NG -- TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP

OK -- PROCEED TO PROBLEM SYMPTOMS TABLE