3.
Monitor the "DR AIR MIX Potentiometor" Parameter on the Scantool.
Connect scantool to Data Link Connector(DLC).
Engine "ON"
Monitor the "DR AIR MIX Potentiometor" Parameter on the Scantool.
Are the DTC B1250 present and is parameter of "DR DIRECTION POTENTIO" fixed ?
※Parameter of "DR DIRECTION POTENTIO" will be fixed at 100%(or any value above 90%), or 0% (or any value below 10%), if there is any fault in DR direction Potentiometor
YES
Go to "Inspection & Repair" procedure
NO
Fault is intermittent caused by poor contact in the sensor’s and/or ECM’s connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.
