TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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WD/Wiring Diagrams57 / 277
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POWER SOURCE — MK4 Supra Wiring Diagrams, page 57
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POWER SOURCE SERVICE HINTS HEADLIGHT RELAY (FOR USA) 2–1 : CLOSED WITH LIGHT CONTROL SW AT HEAD POSITION OR DIMMER SW AT FLASH POSITION HEADLIGHT RELAY (FOR CANADA) 2–1 : CLOSED WITH LIGHT CONTROL SW AT HEAD POSITION OR DIMMER SW AT FLASH POSITION : CLOSED WITH ENGINE RUNNING AND PARKING BRAKE LEVER RELEASED (PARKING BRAKE SW OFF) TAILLIGHT RELAY 5–3: CLOSED WITH LIGHT CONTROL SW AT TAIL OR HEAD POSITION I19 IGNITION SW 7–5 : CLOSED WITH IGNITION KEY AT ACC OR ON POSITION 7–4 : CLOSED WITH IGNITION KEY AT ON OR ST POSITION 2–3 : CLOSED WITH IGNITION KEY AT ON OR ST POSITION 7–8 : CLOSED WITH IGNITION KEY AT ST POSITION : PARTS LOCATION CODE SEE PAGE CODE SEE PAGE CODE SEE PAGE I19 29 : RELAY BLOCKS CODE SEE PAGE RELAY BLOCKS (RELAY BLOCK LOCATION) 2 22 R/B NO. 2 (ENGINE COMPARTMENT LEFT ) 4 23 R/B NO. 4 (LEFT KICK PANEL) : JUNCTION BLOCK AND WIRE HARNESS CONNECTOR CODE SEE PAGE JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION) 1B 20 ENGINE ROOM MAIN WIRE AND J/B NO. 1 (LEFT KICK PANEL) 1C 20 FLOOR NO. 2 WIRE AND J/B NO. 1 (LEFT KICK PANEL) 1H 1J 20 COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL) 1K 2A 22 BATTERY AND J/B NO. 2 (ENGINE COMPARTMENT LEFT) 2B 22 ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT) : CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS CODE SEE PAGE JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION) IB1 36 ENGINE ROOM MAIN WIRE AND COWL WIRE (LEFT KICK PANEL) IC2 36 FLOOR NO. 2 WIRE AND COWL WIRE (LEFT KICK PANEL) : SPLICE POINTS CODE SEE PAGE WIRE HARNESS WITH SPLICE POINTS CODE SEE PAGE WIRE HARNESS WITH SPLICE POINTS E 7 32 ENGINE ROOM MAIN WIRE E 8 32 ENGINE ROOM MAIN WIRE I19 [CONNECTOR DIAGRAM SHOWING PINS: X, 2, 3, 4, 5, X, 7, 8] 58