Visual Inspection
- Visually/physically inspect for the following conditions.
- Vacuum hoses in engine room for splits, kinks and improper installation.
- Positive crankcase ventilation valve for improper installation, damaged o-rings and malfunctioning.
- Verify that the PCM ground connections are clean and properly tightened.
- Check MAFS and ECTS for the following conditions:
- Contamination, deterioration, poor connection or damaged harness.
- The MAF signal displayed on the GDS should increase as engine speed increases.
- The engine coolant temperature displayed on the GDS should close to the actual coolant temperature.
- Was a problem found in any of the above areas?
YES
- Replace or repair as necessary and go to VERIFICATION OF VEHICLE REPAIR .
NO
- Go to next step as below.