the monitor run conditions, select the EGR PRE-
TEST in the DRB III
t, OBD II Monitors Menu.
D. 02 SENSOR HEATER MONITOR
This monitor is now continuously running once
the heaters are energized. Pass information will be
processed at power down. For the monitor run
conditions, select the O2S HEATER MON PRE-
TEST in the DRB III
t, OBD II Monitors Menu.
OBDII Monitor Run Process
3.3L/3.8L SBEC Vehicles
The following procedure has been established to
assist Technicians in the field with enabling and
running OBDII Monitors. The order listed in the
following procedure is intended to allow the techni-
cian to effectively complete each monitor and to set
the CARB Readiness Status in the least time pos-
sible.
**NOTE**
A. Once the monitor run process has begun, do
not turn off the ignition. By turning the igni-
tion key off, monitor enabling conditions will
be lost. Only the 02 Heater Monitor runs after
key off.
B. By performing a Battery Disconnect, or Se-
lecting Erase DTCs, the CARB Readiness and
all
additional
OBD
information
will
be
cleared.
Monitor Preliminary Checks:
1. Plug a DRBIII into the vehicle’s DLC.
2. Turn the ignition, KEY ON–ENGINE OFF.
Watch for MIL lamp illumination during the
bulb check. MIL lamp must have illuminated, if
not, repair MIL lamp.
3. On the DRB III Select #1 DRB III Standalone.
4. Select #1 1998-2002 Diagnostics
5. Select #1 Engine
6. Select #2 DTCs and Related Functions
7. Select #1 Read DTCs
*Verify that No Emissions Related DTCs are
Present.
*If an Emissions DTC is Present, the OBD II
Monitors may not run and the CARB Readiness
will not update.
*The Emissions related DTC, will need to be
repaired, then cleared. By clearing DTCs, the
OBD Monitors will need to be run and completed
to set the CARB Readiness Status.
8. Return to Engine Select Function Menu and
Select #9, OBD II Monitors.
9. Select #3 CARB Readiness Status.
Do all the CARB Readiness Status Locations read
YES?
*YES, then all monitors have been completed and
this vehicle is ready to be I/M or Emission Tested.
*NO, then the following procedure needs to be
followed to run/complete all available monitors.
**NOTE**
A. Only the monitors, which are not YES in the
CARB Readiness Status, need to be completed.
B. Specific criteria need to be met for each monitor.
Each monitor has a Pre-Test screen to assist in
running the monitor. For additional informa-
tion, refer to the Chrysler Corporation Technical
Training Workbook titled On Board Diagnostics,
part number 81-699-97094.
The most efficient order to run the monitors has
been outlined below, including suggestions to aid
the process.
2. EVAPORATIVE LEAK DETECTION MONITOR
(IF THE VEHICLE IS EQUIPPED WITH A LDP
SYSTEM)
This monitor requires a cold start, usually an
overnight soak or parked for at least 8 hours with-
out the engine running. The engine coolant must be
within 10 degrees of ambient/battery temperature,
and the sensed Ambient (outside) Temperature
must be between approximately 40°F and 90°F. For
the monitor run conditions select the EVAP LDP
MON PRE-TEST in the DRB III, OBD II Monitors
Menu.
1. Catalyst Monitor
The vehicle will need to be driven at highway
speed for a few minutes. If the vehicle is equipped
with a manual transmission, using 4
th
gear may
assist in meeting the monitor running criteria. For
the monitor run conditions, select the EWMA CAT
MON PRE-TEST in the DRB III, OBD II Monitors
Menu.
2. EGR Monitor
The EGR monitor enable conditions are basic.
However, it is necessary to maintain the TPS, Map
and RPM ranges to allow the monitor to complete
itself. For the monitor run conditions, select the
EGR PRE-TEST in the DRB III, OBD II Monitors
Menu.
3. O2 Sensor Monitor
The vehicle will need to be driven for a period of
time and brought to a stop for a short period of time
with the Automatic Transmission left in Drive. The
O2S Monitor will not run in Park or Neutral on an
Automatic Transmission equipped vehicle. For the
monitor run conditions, select the O2S MON PRE-
TEST in the DRB III, OBD II Monitors Menu.
4. Purge Monitor
All the Purge Free (PF) cells must update on the
ADAPTIVE MEMORY screen before the Purge
5
GENERAL INFORMATION