Chrysler Sebring 2005 Service Manual page 2156

JR
EMISSIONS CONTROL
DESCRIPTION
VEHICLE EMISSION CONTROL
INFORMATION LABEL . . . . . . . . . . . . . . . . . . . 1
TRIP DEFINITION . . . . . . . . . . . . . . . . . . . . . . 1
DESCRIPTION - MONITORED COMPONENT
NON-MONITORED CIRCUITS
DESCRIPTION - MONITORED SYSTEMS
EMISSIONS CONTROL
DESCRIPTION
VEHICLE EMISSION CONTROL INFORMATION
LABEL
All models have a Vehicle Emission Control Infor-
mation (VECI) Label. Chrysler permanently attaches
the label in the engine compartment. It cannot be
removed without defacing information and destroying
the label.
The label contains the vehicle's emission specifica-
tions and vacuum hose routings. All hoses must be
connected and routed according to the label.
TRIP DEFINITION
A "Trip" means vehicle operation (following an
engine-off period) of duration and driving mode such
that all components and systems are monitored at
least once by the diagnostic system. The monitors
must successfully pass before the PCM can verify
that a previously malfunctioning component is meet-
ing the normal operating conditions of that compo-
nent. For misfire or fuel system malfunction, the
MIL may be extinguished if the fault does not recur
when monitored during three subsequent sequential
driving cycles in which conditions are similar to
those under which the malfunction was first deter-
mined.
Anytime the MIL is illuminated, a DTC is stored.
The DTC can self erase only after the MIL has been
extinguished. Once the MIL is extinguished, the
PCM must pass the diagnostic test for the most
recent DTC for 40 warm-up cycles (80 warm-up
cycles for the Fuel System Monitor and the Misfire
Monitor). A warm-up cycle can best be described by
the following:
• The engine must be running
EMISSIONS CONTROL
TABLE OF CONTENTS
page
OPERATION
EVAPORATIVE EMISSIONS
. 1 EXHAUST GAS RECIRCULATION
. . . . . . . . . . . . . 5 ON-BOARD DIAGNOSTICS
. . . . 6 AIR INJECTION
from the time when the engine was started
160°F
and engine shut off.
sidered to have passed a warm-up cycle. Due to the
conditions required to extinguish the MIL and erase
the DTC, it is most important that after a repair has
been made, all DTC's be erased and the repair veri-
fied by running 1–good trip.
DESCRIPTION - MONITORED COMPONENT
cle emissions if they malfunction. If one of these com-
ponents malfunctions the Malfunction Indicator
Lamp (Check Engine) will illuminate.
proper operation of the part. Electrically operated
components now have input (rationality) and output
(functionality) checks as well as continuity tests
(opens/shorts). Previously, a component like the
Throttle Position sensor (TPS) was checked by the
PCM for an open or shorted circuit. If one of these
conditions occurred, a DTC was set. Now there is a
check to ensure that the component is working. This
is done by watching for a TPS indication of a greater
or lesser throttle opening than MAP and engine rpm
indicate. In the case of the TPS, if engine vacuum is
high and engine rpm is 1600 or greater and the TPS
indicates a large throttle opening, a DTC will be set.
The same applies to low vacuum and 1600 rpm.
set a fault after 1 trip with the malfunction present.
Charts in this section and the appropriate Power-
train Diagnostic Procedure Manual for diagnostic
procedures.
EMISSIONS CONTROL
HIGH AND LOW LIMITS
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DRB III STATE DISPLAY TEST MODE
. . . . . . . . . . . . . . . . . . . . . . . . . 28
• A rise of 40°F in engine temperature must occur
• Engine coolant temperature must crossover
• A "driving cycle" that consists of engine start up
Once the above conditions occur, the PCM is con-
There are several components that will affect vehi-
Some of the component monitors are checking for
Any component that has an associated limp in will
Refer to the Diagnostic Trouble Codes Description
25 - 1
page
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