TSRM/MK4 Supra/Wiring Diagrams
Repair ManualWiring Diagrams
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INTRO/Introduction & How To Use8 / 9
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POWER SOURCE (Current Flow Chart) — MK4 Supra Introduction & How To Use wiring diagram, page 8
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HOW TO USE THIS MANUAL The "Current Flow Chart" section, describes which parts each power source (fuses, fusible links, and circuit breakers) transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each system are explained. Since all System Circuit diagrams start from the power source, the power source system must be fully understood. POWER SOURCE (Current Flow Chart) The chart below shows the route by which current flows from the battery to each electrical source (Fusible Link, Circuit Breaker, Fuse, etc.) and other parts. The next page and following pages show the parts to which each electrical source outputs current. [Chart section:] Battery - FL MAIN 2.0L 100A AM2 ④ 30A AM2 ① 15 Headlight Cleaner Relay M2 15 Headlight Cleaner Relay M8 2 Starter S3 3.5 Ignition Coil and Igniter I2 - 10A HTR-MIR ④ 5 Injector No. 1 I3 - 10A A/C ④ 5 Injector No. 2 I4 - 15A ENGINE ① 5 Injector No. 3 I5 - 15A ECU-IG 5 Injector No. 4 I6 Page Nos. of Related Systems: 32 32 32 10 32 25 28 10 12 12 32 32 12 12 6 30 10 5 Parts: Code or Location A/C Hot Up, ISV A/C Amplifier A/C SW A/C SW Light A/C Pressure SW ADD Control Relay Auto Antenna Control Relay A/T Indicator Light Back-Up Light SW Back-Up Light Blower Motor Blower Resistor Back-Up Light LH Back-Up Light RH Cigarette Lighter Cigarette Lighter Light Circuit Opening Relay Location CB or Fuse: A1 A8 A9 A10 A11 A12 O9 B1 B3 B4 B5 R5 R6 C2 C8 C8 C9 10A ENGINE 20A WIPER 10A TURN 10A [partial text visible] POWER SOURCE [Diagram section contains labels:] I-20B FL MAIN BATTERY 80A MAIN I-2A AM2 18A HAZ-RADIO INJECTOR RELAY STARTER RELAY I-3 B.A DOME DAILILIGHT CONTROL I.B IGNITION SW 10A TAIL 20A DEFOGR 15A HAZ CIG * The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.