System Inspection

Engine Control
P3190 Poor Engine Power - Inspection/Repair:_:System Inspection

Fuel Line Pressure Inspection

1. Check the fuel for excessive water, alcohol, or other contaminants. Replace contaminated fuel as necessary.
2. Install a fuel pressure gage
3. Inspect fuel pressure with normal idle status

Specification :338 - 348kPa(3.38 - 3.48 bar )

4. Is fuel pressure within the specified value?











Ignition System Inspection

Spark Plug Inspection
1. Visually/physically inspect the spark plug related to the misfiring cylinder(s) for the following conditions.
- Damaged insulation, Worn electrodes, Oil or fuel fouled, Loose terminals and cracks
- Check for electrode gap : 1.0 - 1.1 mm (0.039 - 0.043 in.)
- Check if the spark plug for the relevant cylinder is lighter in color than the other plugs.
2. Was a problem found in any of the above areas?






Injection System Inspection

1. Ignition "OFF"
2. Disconnect injector connector.
3. Measure resistance between control terminal and power terminal of the injector connector. (Component side)
Specification









4. Is resistance within the specification?






MAP System Inspection

Check MAPS performance
1. IG "ON".
2. Warm up the engine to normal operating temperature.
3. Measure the current data.




4. Is the measured signal waveform ( comparison response of TPS with MAPS) O.K ?






ECT System Inspection

TPS Inspection
1. Start engine and install GDS.
2. Monitor the "TPS VOLTAGE1" and "TPS VOLTAGE2" parameters on the GDS data list.

Specification :
- Output of TPS1 increases smoothly in proportion with the throttle valve opening angle.
- Output of TPS2 decreases smoothly in inverse proportion with the.

3. Are the TPS VOLTAGE1&2 within the specification?





ETC Motor Inspection
1. Visually/physically inspect the restriction or any foreign objects in throttle body.
2. Clean or replace as necessary and go to "Verification of Vehicle Repair" procedure.
If OK, go to next step as below.
3. Ignition "OFF".
4. Disconnect the ETC motor harness connector.
5. Measure resistance between 'ETC output 1' terminal and 'ETC output 2' terminal of ETC motor harness connector. (Component side)

Specification :1.2 - 1.8Ohms at 20°C(68°F)




6. Is resistance within specification?