Spectrum 3.0L GM - Page 32

32
Step Action Values Yes No
10
 Remove the FAP sensor from the Fuel Rail and insert the
Pressure Test Adapter and connect to 103 kPa (15 PSI)
pressure gauge.
 Connect the DST to the vehicle DLC connector and open the
DST software.
11
 Turn the manual shut-off valve ON. Start the engine and
allow it to reach operating temperature.
Compare the gauge secondary pressure reading to the actual
pressure on the DST.
Is the gauge secondary pressure within the specified percen-
tage of the actual pressure indicated on the DST?
+/-15 kPa
(2.2 PSI)
Go to Step
19
Go to
Step (11)
12
 Turn OFF the manual shut-off valve and let the engine run
until it dies.
 Turn the ignition OFF.
Go to Step
(14)
Go to
Step (13)
13
 If turned OFF, turn ON the manual shut-off valve.
 Disconnect the Lock-off valve electrical connector.
14
 Apply 12V to the lock-off valve terminals and observe the
pressure gauge.
Does the pressure gauge indicate pressure?
Above
1.0 PSI
Go to Step
17
Go to
Step 18
15
Repair or replace the Shut Off Valve (refer to Repair Instruc-
tions).
Is the action complete?
Go to Step
20
NA