Chrysler DODGE D150 1993 Service Manual page 1478

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EMISSION CONTROL SYSTEMS 25 - 1
CONTENTS
p a g e p a g e
AIR INJECTION S Y S T E M - o 9L HDC-GAS EVAPORATIVE EMISSION CONTROLS 6
ENGINE 15 EXHAUST EMISSION CONTROLS 10
COMPONENT REMOVAL/INSTALLATION 17 GENERAL INFORMATION 1
GENERAL INFORMATION
Throughout this group, references are made to par­
ticular vehicle models by alphabetical designation or
by the particular vehicle nameplate. A chart showing
a breakdown of alphabetical designations is included
in t h e Introduction section a t t h e beginning of this
manual.
The 5.9L (V-8) gas powered engine will be referred
to in this group as either the: LDC (Light Duty Cy­
cle) or HDC (Heavy Duty Cycle) engine. The HDC
engine can be easily identified by t h e use of a n en­
gine mounted air injection pump. The 3.9L/5.2L/5.9L
LDC engine will not use a n air injection pump.
Maintenance requirements for LDC and HDC emis­
sion systems differ because of different load and op­
erating conditions.
This section will cover emission control systems for
the 3.9L (V-6), 5.2L (V-8), 5.9L LDC (V-8), 5.9L HDC
(V-8) and 5.9L (in-line six cylinder) diesel engines.
SERVICE REMINDER INDICATOR (SRI) LIGHT
The instrument panel mounted SRI light was for­
merly referred to as t h e emission maintenance re­
minder (EMR) light. It is used with 5.9L HDC-gas
powered engines only. It is not used with diesel en­
gines.
The SRI system is incorporated into the powertrain
control module (PCM) (the PCM was formerly re­
ferred to a s t h e engine controller or SBEC). T h e
PCM records t h e vehicles mileage and stores i t into
memory every 8 miles. At t h a t time, the PCM checks
for the 60,000 and 82,500 mileage trip points. When
the current mileage matches one of the above men­
tioned trip points, t h e SRI light is activated.
The following parts are to be replaced a t either the
indicated mileage or when the SRI light remains on
when the key is in the ON position. After performing
the required maintenance, t h e SRI light must be re­
set to t u r n the light off.
96,000 k m (60,000 miles):
• Replace EGR Valve
• Clean EGR passage
• Replace PCV Valve
132,000 k m (82,500 miles):
• Replace Oxygen Sensor
Refer to Group 0, Lubrication and Maintenance for
all required maintenance schedules.
Failure to perform t h e required maintenance a n d
only reset the SRI light may be a violation of federal
law. Only after performing t h e required mainte­
nance, should the SRI light be reset.
RESETTING SRI LIGHT
(1) Connect t h e DRB II scan tool to t h e data link
connector (Fig. 1) in the engine compartment.
TORQUE CONVERTER
CLUTCH RELAY
A / C CLUTCH RELAY . STARTER RELAY
AUTO SHUTDOWN RELAY
FUEL PUMP RELAY
DATA LINK
CONNECTOR
POWERTRAIN
CONTROL
MODULE J9314-164
Fig. 1 Data Link Connector
(2) Refer to DRB II scan tool operation in t h e ap­
propriate Powertrain Diagnostic Procedures manual.
(3) Reset SRI light.
VEHICLE EMISSION CONTROL INFORMATION
(VECI) LABEL
All vehicles equipped with a gasoline powered en­
gine have a VECI label.
The 3.9L/5.2L/5.9L LDC-gas powered engine will
have a label that combines both emission control in­
formation and vacuum hose routing.
EMISSION CONTROL SYSTEMS