1991 LEXUS SC400 Service Repair Manual

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Page 2409 of 4087

LEXUS SC400 1991 Service Repair Manual 11. REMOVE LH NO.3 TIMING BELT COVER(a) Remove the four mounting bolts. (b) Disconnect the cord grommet from the timing belt cover, and remove the timing belt cover. (c) Remove the cord grommet

Page 2410 of 4087

LEXUS SC400 1991 Service Repair Manual (2) Water by±pass hose from ISC valve (3) (USA Spec.)Vacuum hose (4) (Exc. USA Spec.) Three vacuum hoses (c) Remove the two bolts and two nuts, disconnect the throttle body from the air intake ch

Page 2411 of 4087

LEXUS SC400 1991 Service Repair Manual 15. DISCONNECT HOSESDisconnect the following hoses:(1) Water by±pass hose (from water inlet housing) from ISC valve (2) Vacuum hose (from PS air control valve) from air in- take chamber (3) Vacuum

Page 2412 of 4087

LEXUS SC400 1991 Service Repair Manual (b) Remove the union bolt and two gaskets, and disconnectthe cold start injector tube from the RH delivery pipe. (c) Remove the two bolts and gasket, and disconnect the EGR pipe from the air intake

Page 2413 of 4087

LEXUS SC400 1991 Service Repair Manual (b) Remove the union bolt, two gasket, and cold startinjector tube. (c) Remove the two bolts, cold start injector and gasket. INSPECTION OF COLD START INJECTOR 1. INSPECT RESISTANCE OF COLD START

Page 2414 of 4087

LEXUS SC400 1991 Service Repair Manual (e) Using SST, connect terminals +B and FP of the check(ºDIAGNOSISº) connector. SST 09843±18020 (f) Reconnect the cable to the negative (±) terminal of the battery. (g) Turn the ignition swit

Page 2415 of 4087

LEXUS SC400 1991 Service Repair Manual INSTALLATION OF COLD START INJECTOR (See Components on page FI±26) 1. INSTALL COLD START INJECTOR (a) Install a new gasket and the injector with the two bolts. Torque: 7.8 N Vm (80 kgf Vcm, 69 in.

Page 2416 of 4087

LEXUS SC400 1991 Service Repair Manual (b) Temporarily install a new gasket and the EGR pipe to air intake chamber with the two bolt. (c) (Exc. USA Spec.) Install the connector bracket to check (ºDIAGNOSISº) connector. (d) Install the
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