TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
p.063
FI/EFI System64 / 80
p.065
EFI SYSTEM — Air Induction System — MK2 Supra EFI System, page 64
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Thickness Gauge Clearance between lever and stop screw Between terminals Resistance — VTA — E2 0.2 — 0.8 kΩ 0.50 mm (0.0197 in.) IDL — E2 0 — 100 Ω 0.90 mm (0.0354 in.) IDL — E2 Infinity Throttle valve fully opened position VTA — E2 3.3 — 10 kΩ — Vc — E2 3 — 7 kΩ REMOVAL OF THROTTLE BODY 1. REMOVE AIR INTAKE CONNECTOR 2. DRAIN COOLANT FROM THROTTLE BODY 3. DISCONNECT FOLLOWING HOSES: (a) No. 1 and No. 2 water by-pass hoses (b) PCV hose from the throttle body (c) Label and disconnect emission control hoses 4. DISCONNECT THROTTLE SENSOR CONNECTOR 5. REMOVE THROTTLE BODY Remove the four bolts and remove the throttle body and gasket. INSPECTION OF THROTTLE BODY 1. CLEAN THROTTLE BODY BEFORE INSPECTION (a) Wash and clean the cast parts with a soft brush in carburetor cleaner. (b) Using compressed air, blow all passages and apertures in the throttle body. CAUTION: To prevent deterioration, do not clean the throttle position sensor. 2. CHECK THROTTLE VALVE Check that there is no clearance between the throttle stop screw and throttle lever when the throttle valve is fully closed. Throttle Lever Stop Screw