INSPECTION PROCEDURE 1 Check voltage between terminals VF1, VF2 and E1 of data link connector 1. Front Side VF1 TE1 E1 SST DLC1 Rear Side VF2 TE1 E1 SST DLC1 P11292 P11295 P (1) Warm up engine to normal operating temperature. (2) Using SST, connect terminal TE1 and E1 of data link connector 1. SST 09843-18020 (3) Connect positive probe to terminal VF1, VF2 and negative probe to terminal E1 of data link connector 1. C (1) Warm up the oxygen sensor by racing engine at 2,500 rpm for about 2 minutes. (2) Then, still maintaining engine at 2,500 rpm, count how many times voltmeter fluctuates needle between 0 and 5 V. Result Result Needle fluctuates 8 times or more for every ten seconds | OK Continue at 0 V | NG Type I Continue at 5 V | NG Type II NG Type I NG Type II Go to step 7 . 2 Check voltage between terminals OX1, OX2 and E1 of data link connector 1. OX1 (for front side) E1 OX2 (for rear side) F19595 P Warm up engine to normal operating temperature C Measure voltage between terminals OX1, OX2 and E1 of data link connector 1 when engine is suddenly raced to full throttle. OK The voltage should be 0.5 V or higher at least once. Hint Inspection should not take longer 1 second. NG OK Go to step 7 .