IG key OFF.
Disconnect 'EGR ACTUATOR' connector.
Check resistance between motor (+) and motor (-)
Specification : 23Ω (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. |
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.
