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EC-670 < DTC/CIRCUIT DIAGNOSIS > [VK56DE] P0131, P0151 A/F SENSOR 1 6. Turn ignition switch OFF and wait at least 10 seconds. 7. Restart engine. 8. Drive and accelerate vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine. 9. Maintain the following conditions for approximately 20 consecutive seconds. NOTE: • Keep the accelerator pedal as steady as possible during cruising. • If this procedure is not completed within 1 minute after restarting engine at step 7, return to step 4. 10. Check 1st trip DTC. 11. If 1st trip DTC is displayed, go to . WITH GST Follow the procedure “WITH CONSULT-III” above. Diagnosis Procedure INFOID:0000000006244318 1. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten ground screws on the body. OK or NG OK >> GO TO 2. NG >> Repair or replace ground connections. 2. CHECK AIR FUEL RATIO SENSOR 1 POWER SUPPLY CIRCUIT 1. Disconnect air fuel ratio (A/F) sensor 1 harness connector. 2. Turn ignition switch ON. ENG SPEED 1,000 - 3,200 rpm VHCL SPEED SE More than 40 km/h (25 MPH) B/FUEL SCHDL 1.5 - 9.0 msec Selector lever Suitable position BBIA0539E 1. A/F sensor 1 (bank 2) harness connector 2. A/F sensor 1 (bank 2) 3. A/F sensor 1 (bank 1) 4. A/F sensor 1 (bank 1) harness connector ALBIA0360ZZ 2011 Pathfinder |