Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Dodge Dakota 2000-2001.2003.2005 Approved Dodge Dakota 2000 00AN_25
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AN EMISSION CONTROL SYSTEMS 25 - 1
EMISSION CONTROL SYSTEMS
TABLE OF CONTENTS
page page
ON-BOARD DIAGNOSTICS . . . . . . . . . . . . . . . . . . . 1 EVAPORATIVE EMISSION CONTROLS . . . . . . . . . 23
ON-BOARD DIAGNOSTICS
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION TASK MANAGER--GASOLINE POWERED
EMISSION SYSTEM. . . . . . . . . . . . . . . . . . . . . . . .1 ENGINES ONLY . . . . . . . . . . . . . . . . . . . . . . . . 16
MALFUNCTION INDICATOR LAMP (MIL) . . . . . . . .2 MONITORED SYSTEMS. . . . . . . . . . . . . . . . . . . . 19
STATE DISPLAY TEST MODE . . . . . . . . . . . . . . . .2 TRIP DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . 21
CIRCUIT ACTUATION TEST MODE . . . . . . . . . . . .2 COMPONENT MONITORS . . . . . . . . . . . . . . . . . . 21
DIAGNOSTIC TROUBLE CODES . . . . . . . . . . . . . .2 NON-MONITORED CIRCUITS . . . . . . . . . . . . . . . 22
DIAGNOSTIC TROUBLE CODE HIGH AND LOW LIMITS . . . . . . . . . . . . . . . . . . . . 22
DESCRIPTIONS . . . . . . . . . . . . . . . . . ........3 LOAD VALUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DESCRIPTION AND OPERATION monitor the circuit only when the engine operates
between 750 and 2000 RPM. Suppose the sensor's
EMISSION SYSTEM output circuit shorts to ground when engine operates
above 2400 RPM (resulting in 0 volt input to the
OPERATION PCM). Because the condition happens at an engine
The Powertrain Control Module (PCM) monitors speed above the maximum threshold (2000 rpm), the
many different circuits in the fuel injection, ignition, PCM will not store a DTC.
emission and engine systems. If the PCM senses a There are several operating conditions for which
problem with a monitored circuit often enough to the PCM monitors and sets DTC's. Refer to Moni-
indicate an actual problem, it stores a Diagnostic tored Systems, Components, and Non-Monitored Cir-
Trouble Code (DTC) in the PCM's memory. If the cuits in this section.
code applies to a non-emissions related component or Technicians must retrieve stored DTC's by connect-
system, and the problem is repaired or ceases to ing the DRB scan tool (or an equivalent scan tool) to
exist, the PCM cancels the code after 40 warm-up the 16◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo