TSRM/MK4 Supra/Wiring Diagrams
Repair ManualWiring Diagrams
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EC/Engine Control18 / 24
p.019
ENGINE CONTROL SYSTEM - HEATED OXYGEN SENSORS — MK4 Supra Engine Control wiring diagram, page 18
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*1 : CALIFORNIA *2 : EXCEPT CALIFORNIA *3 : ENGINE AND ELECTRONICALLY CONTROLLED TRANSMISSION ECU FROM POWER SOURCE SYSTEM (SEE PAGE 56) BR-B E27 E28 E26 BR-B BR-B BR-B BR-B BR-B W L-R Y R I17 THROTTLE POSITION SENSOR TO CRUISE ECU E4 (MATE/PLANT THEFT SENSOR DERMA) E6 (EFI GAS TEMP. SENSOR) A 5 (MAIN FUEL SENSOR) L-R L-R Y Y O W BR-Y 10A MIR-HTR 10A PANEL 15A STOP IG1 IG2 IG C-O L-R 1 DIODE (FOR IDLE-UP) 3 R G-W ST1 (STOP LIGHT SW) 2 32 I11 R 11 I11 G-W 43 D 64 D 44 D 24 D 46 D 15 D 4 D W/B1 10L1 THW OIL THO ELS STP E 9 E10 D D ENGINE CONTROL MODULE (*3) OX1 OX2 HT1 HT2 48 D 73 D 47 D 72 D (SHIELDED) (SHIELDED) W W I17 R-L R-L I17 W (SHIELDED) (*2) (*2) B-Y +B +B R-L B-R 1 3 1 3 B-W M 2 MAIN HEATED OXYGEN SENSOR (BANK 1 SENSOR 1 ON FRONT SIDE) OX1 HT M 3 MAIN HEATED OXYGEN SENSOR (BANK 2 SENSOR 1 ON REAR SIDE) OX2 HT L-R R C R C W B-R BR B-R BR OX1 FRONT MAIN OXYGEN SENSOR CONVERTER (B1/S1) W OX2 REAR MAIN OXYGEN SENSOR CONVERTER (B2/S1) (SHIELDED) (SHIELDED) (SHIELDED) (SHIELDED) BR BR E28 E27 B-R B-R E24 E25 E36 B-R BR (*1) BR (*1) B-W L-R BR 87