TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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WD/Wiring Diagrams8 / 277
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HOW TO USE THIS MANUAL — MK4 Supra Wiring Diagrams, 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. 3.5 Ignition Coil and Igniter I2 10A HTR-MIR 2 100A AM2 6 5 Injector No. 1 I3 10A A/C 5 30A AM2 1 5 Injector No. 2 I4 15A ENGINE FL MAIN 2.0L 15 Headlight Cleaner Relay M2 5 Injector No. 3 I5 15A ECU-IG 1 Battery 15 Headlight Cleaner Relay M8 5 Injector No. 4 I6 2 Starter S3 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 Location CB or Fuse A/C Idle-Up VSV A1 A/C Amplifier A8 A/C SW A9 A/C SW Light A10 A/C Pressure SW A11 ADD Control Relay A12 Auto Antenna Control Relay O9 A/T Indicator Light B1 Back-Up Light SW B3 Back-Up Light Relay B4 Blower Motor B5 Blower Resistor R5 Back-Up Light LH R6 Back-Up Light RH C2 Choke Heater C8 Cigarette Lighter C8 Cigarette Lighter Light C9 Circuit Opening Relay 10A ENGINE 20A WIPER 10A TURN 10A GAUGE POWER SOURCE 14A DOOR LOCK CB 1.25B FL MAIN BATTERY 7.5A DOME 90A MAIN 7.5A AM2 15A HAZ-RADIO INJECTOR RELAY IGNITION SW TAILLIGHT RELAY STARTER RELAY 10A TAIL 30A DEFOG 15A RAD C/G 8 * The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.