Craftsman 3100iSC Manual De Usuario

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Using the Diagnostic Tool 
 
I/M READINESS TESTING 
 
 
64 47177 
 
 
If the Red LED or flashing RED and YELLOW LEDs were obtained, 
there is a definite problem present in the system(s). In these cases, 
you have the following options. 
„
 
Repair the vehicle yourself. If you are going to perform the 
repairs yourself, proceed by reading the vehicle service manual 
and following all its procedures and recommendations. 
„
 
Take the vehicle to a professional to have it serviced. The 
problem(s) causing the red LED to light must be repaired before 
the vehicle is ready for an Emissions Test (Smog Check). 
On some vehicle models, the computer will store non-emission 
related DTCs. These DTCs will not command the MIL on since 
they are not emission related. If the diagnostic tool retrieves 
one of these types of codes, the MIL will not be commanded 
on, and the Yellow LED on the diagnostic tool will be 
illuminated. In most cases, these types of codes will not 
prevent the Emissions Test from being performed. 
Using the I/M Readiness Monitor Status to Confirm a Repair 
The I/M Readiness Monitor Status function can be used (after repair of a 
fault has been performed) to confirm that the repair has been performed 
correctly, and/or to check for Monitor Run Status. Use the following 
procedure to determine I/M Readiness Monitor Status: 
1.
  Using retrieved Diagnostic Trouble Codes (DTCs) and code 
definitions as a guide, and following manufacturer's repair 
procedures, repair the fault or faults as instructed. 
2.
  After the fault or faults have been repaired, connect the diagnostic 
tool to the vehicle's DLC and erase the code or codes from the 
vehicle's computer memory. 
„
 
See page 53 for procedures for ERASING DIAGNOSTIC 
TROUBLE CODES (DTCs) from the vehicle's on-board computer. 
„
 
Write the codes down on a piece of paper for reference before 
erasing. 
3.
  After the erase procedure is performed, most of the Monitor icons on 
the diagnostic tool’s LCD display will be flashing. Leave the 
diagnostic tool connected to the vehicle, and perform a Trip Drive 
Cycle for each "flashing" Monitor: 
Misfire, Fuel and Comprehensive Component Monitors run 
continuously and their icons will always be on solid, even after 
the erase function is performed. 
„
 
Each DTC is associated with a specific Monitor. Consult the 
vehicle's service manual to identify the Monitor (or Monitors) 
associated with the faults that were repaired. Follow the 
manufacturer's procedures to perform a Trip Drive Cycle for the 
appropriate Monitors. 
„
 
While observing the Monitor icons on the diagnostic tool’s LCD 
display, perform a Trip Drive Cycle for the appropriate Monitor or 
Monitors.