2002 DODGE RAM Service Repair Manual

Page 2129 of 2255

DODGE RAM 2002  Service Repair Manual Item Description Notes
Blower Motor hardwired to
control headresistor block
Cooling Fan viscous fan
Clutch
Control relay PCM
Draw 2 - 3.9 amps @
12V  0.5V @ 70É
FItem Description Notes
Gap 0.0169- 0

Page 2130 of 2255

DODGE RAM 2002  Service Repair Manual CONTROLS
TABLE OF CONTENTS
page page
CONTROLS
DIAGNOSIS AND TESTING.................10
DIAGNOSIS AND TESTING - VACUUM
SYSTEM.............................10
A/C COMPRESSOR CLUTCH
DESCRIPTION...........

Page 2131 of 2255

DODGE RAM 2002  Service Repair Manual CONTROLS
DIAGNOSIS AND TESTING - VACUUM SYSTEM
Vacuum control is used to operate the mode doors
in the heater-only and HVAC housings. Testing of the
heater-only and a/c heater mode control switch oper

Page 2132 of 2255

DODGE RAM 2002  Service Repair Manual LOCATING VACUUM LEAKS
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE.

Page 2133 of 2255

DODGE RAM 2002  Service Repair Manual Fig. 3 VACUUM CIRCUITS
24 - 12 CONTROLSBR/BE
A/C COMPRESSOR CLUTCH (Continued)

Page 2134 of 2255

DODGE RAM 2002  Service Repair Manual OPERATION
The compressor clutch assembly provides the
means to engage and disengage the compressor from
the engine serpentine accessory drive belt. When the
clutch coil is energized, it magnetically d

Page 2135 of 2255

DODGE RAM 2002  Service Repair Manual remove the refrigerant lines or fittings. (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING/A/C
COMPRESSOR - REMOVAL)
(3) Unplug the compressor clutch coil wire harness
connector.
(4) Insert the two

Page 2136 of 2255

DODGE RAM 2002  Service Repair Manual (8) Install the puller through-bolts (Special Tool
C-6461) through the puller flange and into the jaws
of the rotor puller and tighten (Fig. 9). Turn the
puller center bolt clockwise until the rotor p