ENGINE – 2JZ–GE ENGINE TROUBLESHOOTING EG–421 WIRING DIAGRAM Engine Control Module B+ B-R 3 EA3 B-R GR 24 GR GR M-REL E10 EA1 8 48 B-R W W W OX1 2 E9 2 E1 R/B No.2 Main Heated Oxygen Sensor (Fr) (for California) Oxygen Sensor (Fr) (Except California) 5 EI Main Relay 3 2 73 HT1 2 2 B-L E9 E01 3 BR W 47 OX2 B-Y R-L R-L R-L E9 2 R/B No.2 E1 2 EFI No.1 Main Heated Oxygen Sensor (Rr) (for California) Oxygen Sensor (Rr) (Except California) LG ENG 7 1 2A Data Link Connector 2 R-L LI1 13 W-B B 72 B-Y HT2 E9 BR 4 15 G LG LG 5 V 29 VF1 Battery Ox1 Ox2 VF1 13 5 V E9 5 V E01 28 VF2 VF2 14 L-O E9 BR Data Link Connector 1 FI6939 INSPECTION PROCEDURE (Except California specification vehicles) HINT: If diagnostic trouble code "21" is output, replace oxygen sensor (Fr). If diagnostic trouble code "28" is output, replace oxygen sensor (Rr). 1 Are there any other codes (besides code 21 or 28) being output? NO YES Go to relevant diagnostic trouble code chart. Replace oxygen sensor.