EG–542 ENGINE – 2JZ–GTE ENGINE TROUBLESHOOTING WIRING DIAGRAM B-R Engine Control Module GR GR 24 B+ E10 M-REL 8 EA1 2 2 R/B No. 2 5 Main Relay B-R 5 EA2 B-R W 48 OX1 E9 2 3 Main Heated Oxygen Sensor E1 B-R EF1 Main Relay 3 20 J1 B-R 71 HT1 E9 1 4 B-L EO1 2 2 R-L 9 R-L 14 C1 J2 W R-L 47 OX2 E9 Data Link Connector 2 ENG 7 LG R/B No. 2 4 C1 B-R 2 3 EFI No.1 E1 Sub Heated Oxygen Sensor 13 J1 12A BR-W 5 72 HT2 E9 5 V 1 4 BR-W C1 BR-W J2 BR-W 8 W-B 4 15 LG L3 OX1 OX2 29 VF1 E9 EO1 BR 8 BR 18 BR C1 J1 VF1 13 Battery BR E1 Data Link Connector 1 FI6918 INSPECTION PROCEDURE HINT: When other codes are output in addition to 27 at the same time, check the circuits for other codes first. 1 Check voltage between terminal HT2 of engine control module connector and body ground. ON P (1) Connect SST (check harness "A"). (See page EG–510) SST 09990–01000 (2) Turn ignition switch ON. SST ECM C Measure voltage between terminal HT2 of engine control module connector and body ground. OK Voltage: 9 — 14 V B 72 HT2 BE6853 FI6948 NG OK Go to step 4.