2003 JEEP GRAND CHEROKEE Engine harness

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Page 2091 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual STANDARD PROCEDURE - COMPRESSOR
CLUTCH BREAK-IN
After a new compressor clutch has been installed,
cycle the compressor clutch approximately twenty
times (five seconds on, then five seconds off). Durin

Page 2093 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual gap should be between 0.35 to 0.65 millimeter (0.014
to 0.026 inch). If the proper air gap is not obtained,
add or subtract shims as needed until the desired air
gap is obtained.
(9) Install the compr

Page 2095 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual Both the manual A/C Heater control panel and the
AZC control panel are serviced only as complete
units and cannot be repaired. If faulty or damaged,
the entire control panel unit must be replaced.
DIA

Page 2101 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual AIR INLET POINTER
63 Engine Intake Air Temperature
(in degrees F)-40 to
215
64 Vehicle speed in MPH 0 to 255
65 Engine RPM/100 -0 to 82
66 Engine Coolant Temp - 40 (in
degrees F)-40 to
215
67 Country

Page 2111 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual INSTALLATION
INSTALLATION - RECIRCULATION DOOR
VACUUM ACTUATOR
(1) Install the recirculation door vacuum actuator
on the HVAC housing and tighten the mounting
screws to 2.2 N´m (20 in. lbs.).
(2) Eng

Page 2118 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual HVAC HOUSING
REMOVAL
The HVAC housing assembly must be removed
from the vehicle and the two halves of the housing
separated for service access of the heater core, evap-
orator coil, blend door(s), and

Page 2122 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual NOTE: The blend door sub-assembly is attached to
the housing with 2 screws, and may be removed for
service (Fig. 19).
ASSEMBLY
(1) Place the top half of the HVAC housing on the
bottom half. Be certain

Page 2134 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (10) Allow three to five minutes for the refrigerant
system to stabilize, then take a second set of thermo-
couple measurements. Record the temperature differ-
ence to determine if an additional charg