4.
Is the measured value within specification?
 | ▶ Go to "Check VSCA position sensor resistance" as follows. |
 | ▶ Replace VSCA (Intake manifold assembly) and go to "Verification of Vehicle Repair". |
IG key OFF.
Disconnect VSCA connector.
Check resistance between 'F/B supply' terminal and 'F/B ground' terminal of VSCA connector. (VSCA component side)
Specification : 3.01 kΩ ~ 5.59 kΩ (20℃)
Is the measured value within specification?
| ▶ Go to "Check VSCA position sensor resistance" as follows. |
| ▶ Replace VSCA (Intake manifold assembly) and go to "Verification of Vehicle Repair". |
Engine ON.
Connect prove of oscilloscope to 'F/B signal' terminal of VSCA connector. (VSCA component side)
Turn IG key OFF at engine coolant is over 70℃.
Monitor the signal waveform.
Fig. 1) Signal waveform of variable swirl control actuator motor position sensor at the point of turning engine OFF.
Swirl valve is opened and closed three-time at engine OFF.
☞ ECM controls swirl valve to wide open and wide close position in order to learn swirl valve position at IG key OFF.
under the condition that engine coolant is over 70℃.
Fig. 2) Swirl valve is opened and closed three-time at engine OFF.
Is the signal waveform normal?
| ▶ Go to "Verification of Vehicle Repair" procedure. |
| ▶ Replace VSCA (Intake manifold assembly) and go to "Verification of Vehicle Repair". |
In case of replacing VSCA , perform the "COMPONENT CHANGE ROUTINE" procedure with scan tool. If the "COMPONENT CHANGE ROUTINE" procedure has not completed until automatic learning completed, it may cause vehicle performance and exhaust gas problem.
