2002 JEEP GRAND CHEROKEE head

STUCTURAL ADHESIVE
LOCATIONS
SPECIFICATIONS - STRUCTURAL ADHESIVE
LOCATIONS
INDEX
DESCRIPTION FIGURE
COWL PLENUM 28
DASH PANEL AND FRONT FLOOR PAN 29
PLENUM AND WINDSHIELD WIPER MOUNTING 30
FRONT FLOOR PAN AND SILLS 31
FRONT AND CENTER FLOOR PAN 32
FRONT PAN AND INNER BODY SIDE APERTURE 33
REAR SEAT CROSSMEMBER 34
REAR INNER WHEELHOUSE 35
FLOOR PAN AND SILL ASSEMBLY 36
FLOOR PAN 37
REAR INNER WHEELHOUSE AND REAR FLOOR PAN 38
RIGHT INNER BODYSIDE APERTURE 39
BODY SIDE INNER PANEL AND WHEELHOUSE 40
BODY SIDE OUTER PANEL AND REAR WHEELHOUSE OUTER PANEL 41
D-PILLAR AND FUEL FILLER GUSSETS 42
LIFTGATE 43
TAILLAMP MOUNTING PANEL 44
TAILLAMP 45
REAR INNER CROSSMEMBER 46
ROOF BOWS 47
REAR LOWER HEADER 48
WJBODY STRUCTURE 23 - 137

Fig. 48 REAR LOWER HEADER
23 - 152 BODY STRUCTUREWJ
STUCTURAL ADHESIVE LOCATIONS (Continued)

DESCRIPTION FIGURE
REINFORCEMENT FOR FRONT ENGINE MOUNTING AND STEERING GEAR TO
FRONT INNER SILL81
LARGE AND SMALL SWAY BAR TAPPING PLATES TO FRONT INNER SILLS 82
FRONT AND REAR DOOR HINGE TAPPING PLATES 83
REAR DOOR STRIKER REINFORCEMENT 84
TAIL LAMP MOUNTING PANELS 85
ROOF PANEL TO BODYSIDE APERTURE 86
ROOF PANEL TO REAR HEADER 87
UPPER REAR HEADER TO LOWER HEADER 88
FRONT HEADER AND ROOF BOWS TO INNER PANEL 89
FRONT SEAT/SHOULDER BELT TO INNER PANEL REINFORCEMENT 90
REAR SEAT/SHOULDER BELT TO INNER PANEL REINFORCEMENT 91
FUEL FILLER GUSSET TO INNER QUARTER PANEL 92
FRONT FLOOR PAN TO SILL REINFORCEMENT 93
CENTER FLOOR PAN TO REAR SEAT CROSSMEMBER 94
FRONT FLOOR PAN TO FRONT SEAT REINFORCEMENT AND RAILS 95
CENTER FLOOR PAN TO UPPER CONTROL ARM CROSSMEMBER AND RAILS 96
REAR FLOOR PAN TO RAILS AND SPRING GUIDE CROSSMEMBER 97
REAR RAILS 98
UPPER CONTROL ARM CROSSMEMBER TO REAR RAIL 99
REAR RAIL REINFORCEMENT TO REAR RAILS 100
UPPER CONTROL ARM REINFORCEMENTS TO REAR RAIL 101
OUTER TRANSMISSION CROSSMEMBER REINFORCEMENT TO RAIL AND
BODYSIDE SILL102
BODYSIDE SILL TO FLOOR PAN 103
REAR RAILS TO REAR CROSSMEMBER 104
INNER WHEELHOUSE TO FLOOR PAN 105
INNER WHEELHOUSE TO INNER BODYSIDE APERTURE AND FLOOR PAN 106
OUTER WHEELHOUSE TO OUTER BODYSIDE APERTURE 107
OUTER WHEELHOUSE TO INNER BODYSIDE APERTURE 108
INNER BODYSIDE APERTURE TO OUTER BODYSIDE APERTURE 109
REAR INBOARD SEAT BELT REINFORCEMENT TO FLOOR PAN 110
23 - 154 BODY STRUCTUREWJ
WELD LOCATIONS (Continued)

Fig. 87 ROOF PANEL TO REAR HEADER
23 - 186 BODY STRUCTUREWJ
WELD LOCATIONS (Continued)

Fig. 88 UPPER REAR HEADER TO LOWER HEADER
WJBODY STRUCTURE 23 - 187
WELD LOCATIONS (Continued)

Fig. 89 FRONT HEADER AND ROOF BOWS TO INNER PANEL
23 - 188 BODY STRUCTUREWJ
WELD LOCATIONS (Continued)

(5) Install the new diode in the harness, making
sure current flow is correct. If necessary refer to the
appropriate wiring diagram for current flow.
(6) Solder the connection together using rosin core
type solder only.Do not use acid core solder.
(7) Tape the diode to the harness using electrical
tape making, sure the diode is completely sealed
from the elements.
(8) Re-connect the battery, and test affected sys-
tems.SPECIFICATIONS
A/C APPLICATION TABLE
Item Description Notes
VEHICLE WJ - Grand
Cherokee
SYSTEM R134a w/
expansion valve
COMPRESSOR Nippondenso
10PA17ND-8 PAG oil
Freeze±up
ControlEvaporator Probe Evaporator
mounted
Low psi Control opens < 22 psi -
resets > 34-38 psi
High psi Control opens > 450-490
psi - resets <
270-330 psiline mounted
CONTROL
HEADManual type manual
controls
Automatic Zone
Control (AZC)Automatic
Zone Control
(AZC) with
dual infrared
sensing
Mode Doors Vacuum actuators
(manual)electric
actuator
(AZC)
Blend Door Electric actuator (manual and
AZC)
Blend Door
(passenger)Electric actuator (AZC only)
Recirculation
DoorVacuum actuator
(manual)electric
actuator
(AZC)
Blower Motor Hardwired to
control head
resistor block
(manual),
blower
controller (AZC)
COOLING FAN Hybrid - viscous
clutch/electricPCM output
CLUTCH
Control Relay PCM
controlled
Draw
2.0-3.9 amps @ 12 V  0.5V@ 70É F
Gap 0.0169-0.0319
DRB IIIT
Reads TPS, RPM, A/C
switch
Actuators Clutch relay
WJHEATING & AIR CONDITIONING 24 - 7
HEATING & AIR CONDITIONING (Continued)

INSTALLATION
(1) Plug the wire harness and/or vacuum harness
connectors into the back of the a/c heater control.
(2) Position the a/c heater control in the instru-
ment panel and secure it with 4 screws. Tighten the
screws to 2.2 N´m (20 in. lbs.).
(3) Reinstall the center upper, and center lower
bezels onto the instrument panel. Refer to Instru-
ment Panel System for the procedures.
(4) Connect the battery negative cable.
A/C PRESSURE TRANSDUCER
DESCRIPTION
The A/C pressure transducer is installed on a fit-
ting located on the refrigerant discharge line near
the condenser. An internally threaded hex fitting on
the transducer connects it to the externally threaded
Schrader-type fitting on the discharge line. A rubber
O-ring seals the connection between the transducer
and the discharge line fitting. Three terminals within
a molded plastic connector receptacle on the top of
the transducer connect it to the vehicle electrical sys-
tem through a take out and connector of the head-
lamp and dash wire harness.
The A/C pressure transducer cannot be adjusted or
repaired and if faulty or damaged, it must be
replaced.
OPERATION
The A/C pressure transducer monitors the pres-
sures in the high side of the refrigerant system
through its connection to a fitting on the discharge
line. The transducer will change its internal resis-
tance in response to the pressures it monitors. The
Powertrain Control Module (PCM) provides a five
volt reference signal and a sensor ground to the
transducer, then monitors the output voltage of the
transducer on a sensor return circuit to determine
refrigerant pressure. The PCM is preporgrammed to
respond to this and other sensor inputs by controlling
the operation of the air conditioning compressor
clutch and the radiator cooling fan to help optimize
air conditioning system performance and to protect
the system components from damage. The A/C pres-
sure transducer input to the PCM will also prevent
the air conditioning compressor clutch from engaging
when the ambient temperatures are below about
0.556É C (33É F) due to the pressure/temperature
relationship of the refrigerant. The Schrader-type
valve in the liquid line fitting permits the A/C pres-
sure transducer to be removed or installed without
distrubing the refrigerant in the system. The A/C
pressure transducer is diagnosed using the DRBIIIt
scan tool. Refer to the appropriate diagnostic infor-
mation.
Fig. 13 A/C HEATER CONTROL REMOVE/INSTALL
1 - MOUNTING SCREW TABS
Fig. 14 A/C HEATER CONTROL CONNECTIONS
1 - MODE SWITCH
2 - ELECTRICAL CONNECTIONS
3 - VACUUM HARNESS
WJCONTROLS 24 - 25
A/C HEATER CONTROL (Continued)