IG key OFF.
Disconnect 'EGR ACTUATOR' connector.
Check resistance between motor (+) and motor (-).
Specification : 6~170Ω (20°C)
Connect EGR actuator.
Place oscilloscope probe at motor(+) and motor (-).
Check signal waveform at idle and acceleration over 3000RPM.
Fig 1) EGR actuator motor(-) is controlled at idle or deceleration
Fig 2) EGR actuator motor(+) is controlled at acceleration
Open and close repeats 2 times for learning after IG key OFF and engine temperature is over 70℃
Is the measured value within specification?
 | ▶ Go to "Verification of Vehicle Repair" procedure. |
 | ▶ Check EGR actuator, and go to "Verification of Vehicle Repair" procedure. note In case of replacing EGR actuator , 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. |
