2001 CHRYSLER VOYAGER Engine

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Page 3751 of 4284

CHRYSLER VOYAGER 2001  Service Manual EMISSIONS CONTROL
TABLE OF CONTENTS
page page
EMISSIONS CONTROL
DESCRIPTION............................1
OPERATION.............................8EVAPORATIVE EMISSIONS.................10
EXHAUST GAS REC

Page 3752 of 4284

CHRYSLER VOYAGER 2001  Service Manual put component, it can verify that the command was
carried out by monitoring specific input signals for
expected changes. For example, when the PCM com-
mands the Idle Air Control (IAC) Motor to a spec

Page 3753 of 4284

CHRYSLER VOYAGER 2001  Service Manual ²Vehicle Speed Sensor
²Engine Coolant Temperature Sensor
²Throttle Position Sensor
²Engine Controller Self Test Faults
²Cam or Crank Sensor
²Injector and Coil
²Idle Air Control Motor
²EVAP Ele

Page 3754 of 4284

CHRYSLER VOYAGER 2001  Service Manual PCM calculates the A/F mixture from the output of
the O2S. A low voltage indicates high oxygen content
(lean mixture). A high voltage indicates a low content
of oxygen (rich mixture).
When the upstrea

Page 3755 of 4284

CHRYSLER VOYAGER 2001  Service Manual ²Ethanel content learn is takeng place and the
ethenal used once flag is set
SuspendÐThe Task Manager does not mature a
catalyst fault if any of the following are present:
²Oxygen Sensor Monitor, P

Page 3756 of 4284

CHRYSLER VOYAGER 2001  Service Manual VACUUM ASSIST
The PCM cannot detect leaks or restrictions in the
vacuum circuits of vacuum assisted engine control
system devices. However, these could cause the PCM
to store a MAP sensor diagnostic t

Page 3757 of 4284

CHRYSLER VOYAGER 2001  Service Manual the O2S must be tested to ensure that it is heating
the sensor properly.
The O2S circuit is monitored for a drop in voltage.
The sensor output is used to test the heater by iso-
lating the effect of t

Page 3758 of 4284

CHRYSLER VOYAGER 2001  Service Manual LEAK DETECTION PUMP MONITOR
The leak detection assembly incorporates two pri-
mary functions: it must detect a leak in the evapora-
tive system and seal the evaporative system so the
leak detection te