Spectrum 3.0L GM - Page 132

132
Step Action Value(s) Yes No
9
 Key OFF, C008 disconnected
 Measure the resistance of the control circuit.
See table above.
Is resistance less than 5?
<5
Go to Step
(10)
Repair open
in the har-
ness. Go to
Step (14)
10
 Key OFF, ECU-B disconnected
 Measure the resistance of the control circuit
from C007 to ECU-B pin 2.
Is the resistance less than 5 ?
<5
Replace
ECU. Go to
Step (14)
Repair open
in the har-
ness. Go to
Step (14)
11
 With the affected cylinder disconnected,
measure the resistance if the injector.
Is resistance 2 ± .5?
2 ± .5
Go to Step
(12)
Replace the
injector. Go to
Step(14)
12
 Measure resistance from the injector connec-
tor pin 1 of the affected cylinder to ground.
Is the resistance greater than 30M?
>30
Replace the
ECU. Go to
Step (14)
Go to Step
(13)
13
 Key OFF, ECU-B disconnected
 Measure the resistance from the control cir-
cuit to ground.
Is the resistance greater than 30M?
>30
Repair the
short to
ground in the
harness. Go
to Step (14)
Replace the
ECU. Go to
Step (14).
14
 Remove all test equipment except the moni-
tor.
 Using the monitor, reset the adaptive learn.
 Connect any disconnected components, fus-
es, etc.
 Using the monitor, clear DTC information
from the ECM.
 Turn the ignition OFF and wait 30 seconds.
 Start the engine and operate the vehicle to
full operating temperature.
 Observe the MIL.
 Observe engine performance and driveabili-
ty.
 After operating the engine within the test pa-
rameters of code, check for any stored
codes.
Does the engine operate normally with no stored
codes?
System OK.
Go to On-
Board Diag-
nostics
System
Check/Malfun
ction Indicator
lamp.