Toyota 4-Runner 1985 Repair Manual page 212

EFI SYSTEM - Fuel System
FI-43
FI0577
FlOO13
ON-VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a) Turn on the ignition switch.
NOTE: Do not start the engine.
(b) Short the terminals Fp and +8 of the check con-
nector (diagnosis).
(c) Check 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 pressure regulator.
(d) Remove service wire and install the rubber cap to the
check connector.
(e) Turn off the ignition switch.
If there is no pressure, check the following parts.
• Fusible link
• Fuse (EFI 15A, IGN. 7.5A)
• Circuit opening relay
• Fuel pump
• Wiring connections
2. CHECK FUEL PRESSURE
(a) Check the battery voltage above 12 volts.
(b) Disonnect the cable from the negative terminal of
the battery.
(c) Disconnect the wiring connector from the cold start
injector.
(d) 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 and remove the bolt and two gaskets from the
delivery pipe.
(f) Drain the fuel from the delivery pipe.