Connect scantool with diagnostic connector.
Warm up the engine to normal temperature after engine start.
Select " Intake Potentiometer " parameter on the current data with scantool.
Perform Actuation Test for Air Inlet Mode Selection - Reculation /Fresh in order.
With performing Actuation test, check that the value of each position sensors are changing.
Specification : Recirculation : About 90%, Fresh : About 10%.
Are the value of each position sensors changed when performing actuation test ?
![]() | ▶ This may be a intermittent problem caused by poor contact of component or the Control Unit. ▶ Thoroughly check for looseness, poor connection, bent, corrison, contamination, deformation or damage of connector. ▶ Monitoring with a DVOM on min/max or VMI while wiggling connectors may help find the problem. Any change in voltage indicate a possible problem. ▶ Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure. |
![]() | ▶ Go to " Inspection/Repair" procedure. |