Jeep Grand Cherokee 2007 Workshop Manual PDF | Page 412

EMISSION CONTROL SYSTEM MAINTENANCE
The “Scheduled” maintenance services, listed in bold
type must be done at the times or mileages specified to
assure the continued proper functioning of the emission
control system. These, and all other maintenance services
included in this manual, should be done to provide best
vehicle performance and reliability. More frequent main-
tenance may be needed for vehicles in severe operating
conditions such as dusty areas and very short trip
driving.
Inspection and service also should be done any time a
malfunction is suspected.
NOTE: Maintenance, replacement, or repair of the emis-
sion control devices and systems on your vehicle may be
performed by any automotive repair establishment or
individual using any automotive part which has been
certified pursuant to U.S. EPA or, in the State of Califor-
nia, California Air Resources Board regulations.
MAINTENANCE SCHEDULES
There are two maintenance schedules that show the
required service for your vehicle.
First is Schedule B. It is for vehicles that are operated
under the conditions that are listed below and at the
beginning of the schedule.
Day or night temperatures are below 32°F (0°C)
Stop and go driving
Excessive engine idling
Driving in dusty conditions
Short trips of less than 10 miles (16.2 km)
More than 50% of your driving is at sustained high
speeds during hot weather, above 90°F (32°C)
Trailer towing
Heavy loading
412 MAINTENANCE SCHEDULES
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S

Jeep Grand Cherokee 2007 Workshop Manual Summary of Content

EMISSION CONTROL SYSTEM MAINTENANCEThe Scheduled maintenance services, listed in boldtype must be done at the times or mileages specified toassure the continued proper functioning of the emissioncontrol system. These, and all other maintenance servicesincluded in this manual, should be done to provide bestvehicle performance and reliability. More frequent main-tenance may be needed for vehicles in severe operatingconditions such as dusty areas and very short tripdriving.Inspection and service also should be done any time amalfunction is suspected.NOTE: Maintenance, replacement, or repair of the emis-sion control devices and systems on your vehicle may beperformed by any automotive repair establishment orindividual using any automotive part which has beencertified pursuant to U.S. EPA or, in the State of Califor-nia, California Air Resources Board regulations.MAINTENANCE SCHEDULESThere are two maintenance schedules that show therequired service for your vehicle.First is Schedule B. It is for vehicles that are operatedunder the conditions that are listed below and at thebeginning of the schedule.Day or night temperatures are below 32F (0C)Stop and go drivingExcessive engine idlingDriving in dusty conditionsShort trips of less than 10 miles (16.2 km)More than 50% of your driving is at sustained highspeeds during hot weather, above 90F (32C)Trailer towingHeavy loading412 MAINTENANCE SCHEDULES8MAINTENANCESCHEDULES