4.
Is the measured value within specification?
 | ▶ Go to "Check EGR actuator signal waveform" as follows. |
 | ▶ Check EGR actuator, and go to "Verification of Vehicle Repair" procedure. |
IG key OFF.
Disconnect 'EGR ACTUATOR' connector.
Check resistance between power and ground of EGR actuator position sensor. ('EGR ACTUATOR' component side)
Specification : 6.1 kΩ (20°C)
Is the measured value within specification?
| ▶ Go to "Check EGR actuator signal waveform" as follows. |
| ▶ Check EGR actuator, and go to "Verification of Vehicle Repair" procedure. |
Turn engine ON and check if engine temperature is 70℃
Place a oscilloscope probe at signal terminal of EGR actuator
Turn IG key OFF when engine coolant temperature is over 70℃
Check the waveform right after IG key OFF
Fig.1) Motor position sensor waveform when IG key OFF and warmed up.
☞ Open and close repeats 2 times for learning after IG key OFF and engine temperature is over 70℃ 3.9V when EGR valve is closed. 2.7V when open.
Is the measured value within specification?
| ▶ Go to "Verification of Vehicle Repair" procedure. |
| ▶ Replaces EGR actuator, and go to "Verification of Vehicle Repair" procedure. |
In case of replacing EGR actuator , perform the "COMPONENT CHANGE ROUTINE" procedure with GDS. If the "COMPONENT CHANGE ROUTINE" procedure has not completed until automatic learning completed, it may cause vehicle performance and exhaust gas problem.
