1991 LEXUS SC400 Service Repair Manual

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Page 1945 of 4087

LEXUS SC400 1991 Service Repair Manual VSV for Fuel Pressure Control FI±90 ± Electronic Control System (VSV for Fue\ l Pressure Control)EFI SYSTEM WhereEverybodyKnowsYourName

Page 1946 of 4087

LEXUS SC400 1991 Service Repair Manual COMPONENTS FOR REMOVAL AND INSTALLATION FI±91EFI SYSTEM ± Electronic Control System (VSV for Fuel Pressure Control) WhereEverybodyKnowsYourName

Page 1947 of 4087

LEXUS SC400 1991 Service Repair Manual INSPECTION OF VSV FOR FUEL PRESSURE CONTROL 1. DISCONNECT CABLE FROM NEGATIVE TERMINAL OFBATTERY CAUTION: Work must be started after approx. 20 se- conds or longer from the time the ignition switch

Page 1948 of 4087

LEXUS SC400 1991 Service Repair Manual 3. INSPECT VSV A. Inspect VSV for open circuitUsing an ohmmeter, check that there is continuity between the terminals. Resistance (Cold): 37±44  If there is no continuity, replace the VSV. B. Ins

Page 1949 of 4087

LEXUS SC400 1991 Service Repair Manual (b) (Exc. USA Spec.)Install the water by±pass pipe to the VSV with the bolt. (c) Connect the following hoses to VSV: (1) Vacuum hose (from fuel pressure regulator) (2) Vacuum hose (from air inta

Page 1950 of 4087

LEXUS SC400 1991 Service Repair Manual VSV for EVAP INSPECTION OF VSV FOR EVAP (See Emission Control System on page EC±11) FI±95 ± Electronic Control System (VSV f\ or EVAP)EFI SYSTEM WhereEverybodyKn

Page 1951 of 4087

LEXUS SC400 1991 Service Repair Manual VSV for EGR (Exc. USA Spec.) INSPECTION OF VSV FOR EGR (See Emission Control Systems on page EC±18) FI±96 ± Electronic Control Syst\ em (VSV for EGR (Ex

Page 1952 of 4087

LEXUS SC400 1991 Service Repair Manual EGR Valve (USA Spec. only) INSPECTION OF VSV FOR EGR (See Emission Control Systems on page EC±21) FI±97 ± Electronic Control System (E\ GR Valve (USA Spec. On
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