Basic Inspection

2ZR-FE ENGINE CONTROL SYSTEM: 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 engine troubleshooting.

1. CHECK BATTERY VOLTAGE

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

Result





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

2. CHECK WHETHER ENGINE CRANKS

NG -- PROCEED TO PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures
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 Removal
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 Symptom Related Diagnostic Procedures