Craftsman 3100iSC Manual De Usuario

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Using the Diagnostic Tool 
 
 
I/M READINESS TESTING 
 
 
 
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If a "PENDING" Diagnostic Trouble 
Code is causing the yellow LED to 
light, it is possible that the vehicle will 
be allowed to be tested for emissions 
and certified. Currently, most areas 
(states / countries) will allow an 
Emissions Test (Smog Check) to be 
performed if the only code in the 
vehicle's computer is a "PENDING" 
Diagnostic Trouble Code. 
„
 
If the illumination of the Yellow LED is 
being caused by monitors that “have 
not run” their diagnostic testing, then 
the issue of the vehicle being ready 
for an Emissions Test (Smog Check) 
depends on the emissions regulations 
and laws of your local area. 
- Some areas require that all 
Monitors indicate a "Has Run" 
status before they allow an 
Emissions Test (Smog Check) to 
be performed. Other areas only 
require that some, but not all, 
Monitors have run their self-
diagnostic testing before an Emissions Test (Smog Check) 
may be performed. 
  From the code retrieval procedure, determine the status of 
each Monitor (a solid Monitor icon shows Monitor "Has Run" 
status, a flashing Monitor icon indicates "Has Not Run" status). 
Take this information to an emissions professional to 
determine (based on your test results) if your vehicle is ready 
for an Emissions Test (Smog Check). 
3.
  RED LED - Indicates there is a problem 
with one or more of the vehicle's systems. 
A vehicle displaying a red LED is definitely 
not ready for an Emissions Test (Smog 
Check). The red LED is also an indication 
that there are Diagnostic Trouble Code(s) 
present (displayed on the diagnostic tool's 
screen). The Multifunction Indicator 
(Check Engine) Lamp on the vehicle's 
instrument panel will light steady. The 
problem that is causing the red LED to 
light must be repaired before an 
Emissions Test (Smog Check) can be performed. It is also suggested 
that the vehicle be inspected/repaired before driving the vehicle further. 
4.
  Flashing Red and Yellow LEDs – Indicates that a "permanent" 
code has been set, and one or more of the vehicle’s monitors has 
failed its diagnostic testing. A "permanent" DTC can be cleared only 
by the vehicle's computer following successful completion of the 
monitor that caused the fault to set.