Equus 3140 - Scan Tool CanOBD2&1 Kit - Manual (Page 37)

CanOBD2&1 35
E
OBD2 Systems
I/M READINESS TESTING
- Some areas require that all Monitors indicate a "Has Run" sta-
tus 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" sta-
tus). 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 sys-
tems. 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 CanOBD2&1 Scan Tool's screen).
The Malfunction 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.
If the Red LED was 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 prob-
lem(s) causing the red LED to light must be repaired before the
vehicle is ready for an Emissions Test (Smog Check).
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 per-
formed correctly, and/or to check for Monitor Run Status. Use the fol-
lowing procedure to determine I/M Readiness Monitor Status:
1. Using retrieved Diagnostic Trouble Codes (DTCs) and code defini-
tions 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
CanOBD2&1 Scan Tool to the vehicle's DLC and erase the code or
codes from the vehicle's computer memory.