TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
p.113
FI/EFI System114 / 126
p.115
Fuel Pump Relay and Resistor — MK3 Supra EFI System, page 114
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Fuel Pump Relay and Resistor [Diagram labels:] FP To Circuit Opening Relay (FP) +B PR Fuel Pump Solenoid Resistor To ECU (FP) FPR Fuel Pump Relay M Fuel Pump FI112A INSPECTION OF PUMP RELAY AND RESISTOR 1. INSPECT OF FUEL PUMP RELAY HINT: The relay is located in the left cowl side of engine compartment. [Diagram label:] FPR FP PR +B FI113A A. Inspect Relay Continuity (a) Using an ohmmeter, check that there is continuity between terminals +B and PR. (b) Check that there is continuity between terminals +B and FPR. (c) Check that there is no continuity between terminals +B and PR. If continuity is not as specified, replace the relay. Continuity Continuity +B FPR PR +B No continuity FI2875 B. Inspect Relay Operation (a) Apply battery voltage across terminals +B and FPR. (b) Using an ohmmeter, check that there is continuity between terminals +B and PR. (c) Check that there is no continuity between terminals +B and FP. If operation is not as described, replace the relay. No continuity +B FPR PR +B FP Continuity Battery FI2876