10 Check For Flooding Fuel Injector & Control Circuit

Perform No Start Test 2, before proceeding.
1. Disconnect the fuel injector connection from throttle body.
2. With diagnostic readout box select Actuate ``Auto Shutdown Relay'' and check throttle body.
3. If injector area of throttle body is dry, proceed as follows:
a. Turn ignition switch Off and disconnect 60-way connector from SMEC, inspect for terminal or pin damage. If any terminal damage is found, repair, then proceed to Test 17. If no terminal damage is found, continue.
b. Reconnect throttle body injector harness connector, then install a jumper wire from cavity 58 of 60-way connector to ground.
c. Turn ignition switch On.
d. If fuel is not spraying from any injector, replace SMEC, then proceed to Test 17.
e. If fuel is spraying from any injector, remove jumper wire from cavity 58 of 60-way connector, then turn ignition switch Off.
f. Disconnect fuel injector connection to throttle body and the 14-way from the SMEC, inspect for terminal or pin damage. If any terminal damage is found, repair, then proceed to Test 17. If no terminal damage is found, continue.
g. With diagnostic readout box, press volt/ohm button to read ohms and touch ohm probe to cavity 9 of the 14-way connector.
h. If ohmmeter reads continuity, repair white wire for a short in the harness to ground, then proceed to Test 17.
i. If ohmmeter reads no continuity, touch ohm probe to cavity 10 of the 14-way connector.
j. If ohmmeter still reads continuity, repair tan wire for a short in the harness to ground, then proceed to Test 17.
k. If ohmmeter still reads no continuity, replace SMEC, then proceed to Test 17.
4. If injection area of throttle body is wet, proceed as follows:
a. Select ``Stop All Tests'' on diagnostic readout box and turn ignition switch Off, then remove vacuum hose from pressure regulator.
b. If fuel is dripping from hose, replace fuel pressure regulator, then proceed to Test 17.
c. If fuel is not dripping from hose, release pressure by loosening gas cap, removing wiring harness connector from injector harness, grounding one injector terminal with a jumper wire and connecting a jumper wire from second terminal to battery positive terminal for 10 seconds.
d. Remove jumper wires and reconnect injector wiring harness connector, then install fuel pressure gauge in fuel supply hose at throttle body and with diagnostic readout box select Actuator Test ``Ignition Coil.''
e. Install fuel pressure gauge in fuel supply hose at throttle body, with diagnostic readout box select Actuator Test ``Ignition Coil.''
f. If fuel pressure is 13.5---15.5 psi, remove fuel injectors and inspect O-rings. If O-rings are damaged, replace, then proceed to Test 17. If O-rings are not damaged, replace fuel injector, then proceed to Test 17.
g. If fuel pressure is not 13.5---15.5 psi, turn ignition switch Off, then inspect fuel return line to fuel tank for kinks or restrictions. If there are kinks in fuel line, repair line, then proceed to Test 17.
h. If there are no kinks in fuel line, remove fuel return line from tank pump unit and place end in safety fuel can. Put diagnostic readout box system in Actuate ``Ignition Coil.''
i. If fuel pressure is greater than 15.5 psi, replace fuel pressure regulator, then proceed to Test 17. Put diagnostic readout box system in Actuate ``Ignition Coil.''
j. If fuel pressure is less than 15.5, replace fuel pump tank unit, then proceed to Test 17.