Toyota Celica Supra 1986 Service And Repair Manual page 147

EFI SYSTEM - Fuel System
Fl-45
Injector
ON -VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a)
Turn on the ignition switch.
NOTE: Do not start the engine.
(b) Short both terminals of the fuel pump check con·
nee tor.
(c) Chock that there is a pressure in the hose to the cold
start injector.
NOTE; At this time. you will hear fuel return noise from
the l)fessure regulator.
(d) Remove service wire and install the rubber cap to the
check terminal.
(e) Turn off the ignition switch.
If there is no pressure, check the following parts.
• Fusible link
• Fuse IEFI. 15A, IGNITION 7.5A)
• Circuit opening relay
• Fuel pump
• Wiring connections
2. CHECK FUEL PRESSURE
{a) Check t he battery voltage above 12 volts.
{b) Disconnect the battery ground cable.
!cl Disconnect the w iring connector from the cold start
Injector.
!dl Put a suitable container or shop towel under rear end
of the delivery pipe.
(e) Slowly loosen the union bolt of the cold start injector
hose end remove the bolt and two gaskets f rom the
delivery pipe.
{f)
Drain the fuel in the delivery pipe.