Kia 2004.5 Spectra Service Technical Training page 147

2004.5 Spectra Technology
OBDII SYSTEM
READINESS TEST
Driveability
The OBDII system readiness tests are used by many
states in their smog check or inspection/maintenance
(I/M) program. If the drive cycle has not been
previously completed, showing that the OBDII system
is ready to monitor for faults, the vehicle cannot be
I/M tested. This prevents a driver with a MIL ON, due
to fault detection, from clearing the DTC and getting a
smog check performed before the DTC returns.
When the readiness flags are set due to completing
the drive cycle, the monitor inspects for faults. When
the DTC is cleared, so are the readiness flags. The
vehicle must be driven at various road speeds with
sufficient rise in engine temperature and various
gearshifts to set the flags again. The drive cycle
involves:
• Cold start idle to normal engine operating
temperature
• Accelerate to 50MPH with a steady cruise for
several minutes
• Decelerate to a steady lower MPH cruise for several
minutes
• Then, slow to a stop, engine idling.
The readiness flags monitoring includes: catalyst,
misfire, fuel system, O2 sensor, evaporative system,
engine cooling, A/C, and comprehensive components
monitoring.
Diagnosing and repair the DTC with the troubleshooting
instructions on KSIS. Then, use some or all of the 4
configured driving patterns (based upon the DTC) to
verify the repair: Idle Test mode (comprehensive
component), Short Driving Test mode, Long Driving
Test mode and Evap. Leakage Test.
N N o o t t e e : : n n o o t t a a l l l l r r e e a a d d i i n n e e s s s s t t e e s s t t s s m m a a y y c c o o m m p p l l e e t t e e i i n n a a
s s i i n n g g l l e e 0 0 d d r r i i v v e e c c y y c c l l e e . .
29