Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 2364
EVAPORATIVE EMISSIONS
DIAGNOSIS AND TESTING
OBD II MONITOR INFORMATION
Comprehensive Components
Monitor
Major Monitors Non Fuel
Control & Non Misfire
Major Monitors Fuel Control &
misfire
(Includes All Engine Hardware
Sensor, Switches, Solenoids,
etc.)
(Monitors Entire Emission
System)
(Monitors Entire System)
Most are one trip Faults
Most are Two Trips Faults
Two Trip Faults
Usually Turns on The Mill and
Sets DTC After One Failure
Turns On The Mil and Sets
DTC after Two Consecutive
Failure
The Mil and Sets DTC After Two
Consecutive Failure
Priority 3
Priority 1 or 3
Priority 2 or 4
All Checked For Continuity
Done Stop Test = Yes
Fuel Control Monitor
Open
Oxygen Sensor Heater
Monitors Fuel Control
Short To Ground
Oxygen Sensor Response
System For:
Short To Voltage
Catalytic Converter
Fuel System Lean
Inputs Checked For Rationality
Efficiency Except EWMA
Fuel System Rich
Outputs Checked For
Functionality
up to 6 test per trip and a one
trip fault (SBEC) and two trip
fault on (JTEC)
Requires 3 Consecutive Fuel
System Good Trips to Extinguish
the MIL
EGR System
Misfire Monitor
Evaporative Emission System
(purge and leak)
Monitors for Engine Misfire At:
Non-LDP
4 X 1000 RPM Counter (4000
Revs) (Type B)
LDP
**200 X 3 (600) RPM counter
(Type A)
Requires 3 Consecutive Global
Good Trips to Extinguish the
MIL*
Requires 3 Consecutive Global
Good Trips to Extinguish the
MIL*
Requires 3 Consecutive Global
Good Trips to Extinguish the MIL
*40 Warm Up Cycles are
required to erase DTCs after the
MIL has been extinguished
** Type A misfire is a one trip
failure on pre-1999, 2 trip failure
on 1999 and later. The MIL will
illuminate at the first or second
failure, based on MY.
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EVAPORATIVE EMISSIONS
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OBD II MONITOR RUN PROCESS
The following procedure has been established to assist Daimler Chrysler Dealer Technicians in the field with
enabling and running OBD II Monitors. The order listed in the following procedure is intended to allow the technician
to effectively complete each monitor and to set the CARB Readiness Status in the least time possible.
NOTE:
•
Once the monitor run process has begun, do not turn off the ignition. By turning the ignition key off,
monitor enabling conditions will be lost. NVLD Monitor runs after key off.
•
By performing a Battery Disconnect, or Selecting Erase DTCs, the CARB Readiness and all additional
OBD II information will be cleared.
Monitor Preliminary Checks:
1. Plug a SCAN TOOL into the vehicle’s Data Link Connector (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 SCAN TOOL Select #1Stand-alone.
4. Select No.1 1998-2004 Diagnostics.
5. Select No.1 Engine.
6. Select No.2 DTCs and Related Functions.
7. Select No.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 No. 9, OBD II Monitors.
9. Select No. 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:
•
Only the monitors, which are not YES in the CARB Readiness Status, need to be completed.
•
Specific criteria need to be met for each monitor. Each monitor has a Pre-Test screen to assist in running
the monitor. For additional information, refer to the DaimlerChrysler Corporation Technical Training Work-
book titled On Board Diagnostics: OBD II/EOBD, part number 81-699-01050.
•
The most efficient order to run the monitors has been outlined below, including suggestions to aid the
process.
Natural Vacuum Leak Detection with Purge Monitor
This monitor requires a cool down cycle, usually an overnight soak for at least 8 hours without the engine running.
The ambient temperature must decrease overnight - parking the vehicle outside is advised. To run this test the fuel
level must be between 15-85% full. For the monitor run conditions select the EVAP MON PRE-TEST in the SCAN
TOOL, OBD II Monitors Menu.The Purge monitor will run if the small leak test reports a pass. Criteria for NVLD
monitor:
•
Engine off time greater than @ one hour.
•
Fuel Level between 15% and 85 %.
•
Start Up ECT and IAT within 10° C (18° F).
•
Vehicle started and run until Purge Monitor reports a result.
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EVAPORATIVE EMISSIONS
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NOTE: If the vehicle does not report a result and the conditions where correct. It may take up to two weeks
to fail the small leak monitor. DO NOT use this test to attempt to determine a fault. Use the appropriate
service information procedure for finding a small leak. If there are no faults and the conditions are correct
this test will run and report a pass. Note the Small leak test can find leaks less than 10 thousands of an
inch. If a small leak is present it takes approximately one week of normal driving to report a failure.
Catalyst / O2 Monitor
With NGC, Catalyst and O2 Monitor information are acquired and processed at the same time. Most vehicles will
need to be driven at highway speed (< 50 mph) for a few minutes.Some trucks run the monitor at idle in drive. If the
vehicle is equipped with a manual transmission, using 4th gear may assist in meeting the monitor running criteria.
For the monitor run conditions, select the BANK 1 CAT MON PRE-TEST in the SCAN TOOL, OBD II Monitors
Menu.
EGR Monitor
The EGR monitor now runs in a closed throttle decel or at idle on a warm vehicle. 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 SCAN TOOL, OBD II Monitors Menu.
O2 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 SCAN TOOL, OBD II
Monitors Menu.
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SOLENOID-PROPORTIONAL PURGE
REMOVAL
The solenoid attaches to a bracket near the right rear
of the engine. The solenoid will not operate unless it is
installed correctly.
1. Location for 5.7L engine.
2. Location for 2.7 and 3.5L engine.
3. Disconnect electrical connector from solenoid.
4. Disconnect vacuum tubes from solenoid.
5. Remove solenoid from bracket.
INSTALLATION
The solenoid attaches to a bracket near the air cleaner. The solenoid will not operate unless it is installed correctly.
The top of the solenoid has TOP printed on it. The solenoid will not operate unless it is installed correctly.
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