TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
p.115
FI/EFI System116 / 126
p.117
Fuel Pressure Control System (7M-GTE) — MK3 Supra EFI System, page 116
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FI-116 EFI SYSTEM — Electronic Control System Fuel Pressure Control System (7M-GTE) [DIAGRAM showing ECU connections with: To Circuit Opening Relay ← STA To EFI Main Relay ← +B(+B1) Air Temp. Sensor (Air Flow Meter) connected to VSV 2XXX (Fuel Pressure Up) ← VSV2 ← THA ← E2 Water Temp. Sensor ← THW ← E1 Ground symbol] F10604 INSPECTION OF FUEL PRESSURE CONTROL SYSTEM INSPECT VSV A. Inspect VSV for Open Circuit Using an ohmmeter, check that there is continuity between terminals. Resistance: 30 — 50 Ω If there is no continuity, replace the VSV. [DIAGRAM showing ohmmeter connected to VSV] F11917 B. Inspect VSV for Short Circuit Using an ohmmeter, check that there is no continuity between each terminal and the body. If there is continuity, replace the VSV. [DIAGRAM showing "No continuity" measurement between VSV terminal and body] F11918 C. Inspect VSV Operation (a) Apply battery voltage across the terminals. (b) Check that air flows from pipe E to air filter. [DIAGRAM showing VSV connected to battery with Air inlet and Air Filter, indicating airflow] F11919