2006 DODGE RAM SRT-10 service

The blend door actuators are diagnosed using a scan tool (Refer to 24 - HEATING & AIR CONDITIONING - DIAG-
NOSIS AND TESTING and to 24 - HVAC Electrical Diagnostics for more information).
The blend door actuators cannot be adjusted or repaired and, if faulty or damaged, they must be replaced.
REMOVAL
WARNING: On vehicles equipped with airbags, disable the airbag system before attempting any steering
wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the
battery negative (ground) cable, then wait two minutes for the airbag system capacitor to discharge before
performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to
take the proper precautions could result in accidental airbag deploymentand possible personal injury or
death.
NOTE: The single zone heating-A/C system is equipped with a single blend door actuator. The dual zone
system has two blend door actuators, one for the driver side blend-air doorand one for the passenger side
blend-air door.
SINGLE ZONE/DUAL ZONE DRIVER SIDE
1. Disconnect and isolate the negative battery cable.
2. Remove the instrument panel from the vehicle
(Refer to 23 - BODY/INSTRUMENT PANEL/IN-
STRUMENT PANEL ASSEMBLY - REMOVAL).
3. Remove the two screws (1) that secure the blend
door actuator (2) to the back of the HVAC housing
(3).
4. Remove the blend door actuator from the HVAC
housing and disconnect the HVAC wire harness
connector (4) from the actuator.
5. Remove the blend door actuator from the vehicle.

The mode door actuators cannot be adjusted or repaired and, if faulty or damaged, they must be replaced.
REMOVAL
WARNING: On vehicles equipped with airbags, disable the airbag system before attempting any steering
wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the
battery negative (ground) cable, then wait two minutes for the airbag system capacitor to discharge before
performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to
take the proper precautions could result in an accidental airbag deployment and possible personal injury or
death.
NOTE: The heating-A/C system is equipped with two mode door actuators, onefor the panel/floor-air door
and one for the defrost-air door.
PANEL/FLOOR DOOR ACTUATOR
1. Disconnect and isolate the negative battery cable.
2. Remove the instrument panel from the vehicle
(Refer to 23 - BODY/INSTRUMENT PANEL/IN-
STRUMENT PANEL ASSEMBLY - REMOVAL).
3. Remove the screws (1) that secure the panel/floor
door actuator (2) to the back of the HVAC housing
(3).
4. Remove the panel/floor door actuator from the
HVAC housing and disconnect the HVAC wire har-
ness connector (4) from the actuator.
5. Remove the panel/floor door actuator from the
vehicle.
DEFROST DOOR ACTUATOR
1. Disconnect and isolate the negative battery cable.
2. Remove the instrument panel from the vehicle
(Refer to 23 - BODY/INSTRUMENT PANEL/IN-
STRUMENT PANEL ASSEMBLY - REMOVAL).
3. Remove the screws (1) that secure the defrost
door actuator (2) to the back of the HVAC housing
(3).
4. Remove the defrost door actuator from the HVAC
housing and disconnect the HVAC wire harness
connector (4) from the actuator.
5. Remove the defrost door actuator from the vehicle.

REMOVAL
WARNING: On vehicles equipped with airbags, disable the airbag system before attempting any steering
wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the
battery negative (ground) cable, then wait two minutes for the airbag system capacitor to discharge before
performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to
take the proper precautions could result in accidental airbag deploymentand possible personal injury or
death.
1. Disconnect and isolate the negative battery cable.
2. Remove the glove box from the instrument panel
(Refer to 23 - BODY/INSTRUMENT PANEL/
GLOVE BOX - REMOVAL).
3. Remove the two screws (1) that secure the recircu-
lation door actuator (2) to the side of the HVAC air
inlet housing (3).
4. Remove the recirculation door actuator from the air
inlet housing and disconnect the HVAC wire har-
ness connector (4) from the actuator.
5. Remove the recirculation door actuator from the
vehicle.
INSTALLATION
1. Install the recirculation door actuator (1) onto the
side of the HVAC air inlet housing (2). If necessary,
rotate the actuator slightly to align the splines on
the actuator output shaft (3) with those in the recir-
culation door actuator coupler (4).

TESTS
1. Verify the battery state of charge (Refer to 8 - ELECTRICAL/BATTERY SYSTEM/BATTERY - DIAGNOSIS AND
TESTING).
2. Connect an ammeter (0 to 10 ampere scale selected) in series with the clutch coil feed terminal. Connect a
voltmeter (0 to 20 volt scale selected) to measure voltage across the battery and the clutch coil.
3. With the A/C-heater control in the A/C mode and the blower motor at low speed, start the engine and allow it to
run at a normal idle speed.
4. The A/C compressor clutch should engage immediately, and the clutch coil supply voltage should be within two
volts of the battery voltage. If the coil supply voltage is OK, go to Step 5. If the coil supply voltage is not within
two volts of battery voltage, test the clutch coil feed circuit for excessive voltage drop and repair as necessary.
5. For the acceptable A/C clutch coil current draw specifications refer to24 - HEATING & AIR CONDITIONING -
SPECIFICATIONS. Specifications apply for a work area temperature of 21° C(70° F). If voltage is more than
12.5 volts, add electrical loads by turning on electrical accessories until voltage reads below 12.5 volts.
STANDARD PROCEDURE
A/C CLUTCH PLATE INSPECTION
NOTE: The A/C clutch can be serviced inthe vehicle. The refrigerant systemcan remain fully-charged dur-
ing compressor clutch, pulley and bearing assembly, or coil replacement.
Examine the friction surfaces of the pulley and the
clutch plate (2) for wear. The pulley and clutch plate
should be replaced if there is excessive wear or scor-
ing.
If the friction surfaces are oily, inspect the shaft and
nose area of the A/C compressor (1) for refrigerant oil.
If refrigerant oil is found, the compressor shaft seal is
leaking and the A/C compressor must be replaced.
Check the pulley bearing for roughness or excessive
leakage of grease. Replace the pulley and bearing
assembly, if required.
A/C CLUTCH BREAK-IN
After a new A/C compressor clutch hasbeen installed, cycle the compressorclutch approximately 20 times (5 sec-
onds on, then 5 seconds off). During this procedure, set the A/C-heater controls to the A/C Recirculation Mode, the
blower motor in the highest speed position, and the engine speed at 1500 to 2000 rpm. This procedure (burnishing)
will seat the opposing friction surfaces and provide a higher compressor clutch torque capability.

REMOVAL
DENSO A/C COMPRESSOR
NOTE: The compressor clutch assembly can be serviced with the refrigerantsystem fully-charged.
NOTE: Typical A/C compressor shown in illustrations.
1. Disconnect and isolate the negative battery cable.
2. Remove the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/BELTS-DRIVE -
REMOVAL).
3. Disconnect the engine wire harness from the com-
pressor clutch field coilconnector (1) located on
the top of the A/C compressor (5).
4. Remove the bolts that secure the A/C compressor
to the engine and support the A/C compressor.
5. Carefully remove the compressor clutch field coil
connector and wire lead from the connector bracket
(2).
6. Remove the compressor shaft bolt (3). A band-type
oil filter wrench or a strap wrench may be used to
hold the clutch plate (4) from rotating during bolt
removal.
CAUTION: Do not pry between the clutch plate and
the pulley and bearing assembly to remove the
clutch plate from the compressor shaft as this
may damage the clutch plate.
NOTE: Use care not to lose any clutch shim(s)
during removal of the clutch plate, as they may be
reused during the clutch plate installation process.
7. Tap the clutch plate (2) lightly with a plastic mallet
to release it from the splines on the compressor
shaft (1) and remove the clutch plate and shim(s)
(3).

8. Using snap ring pliers (2), remove the snap ring (1)
that secures the pulley and bearing assembly (3) to
the front of the A/C compressor and remove the
pulley and bearing assembly.
9. Using snap ring pliers (Special Tool C-4574 or
equivalent) (1), remove the snap ring (4) that
secures the compressor clutch field coil (2) to the
front of the A/C compressor (3) and remove the
field coil.
VISTEON A/C COMPRESSOR
NOTE: The A/C compressor clutch can be serviced in the vehicle. The refrigerant system can remain fully-
charged during compressor clutch, pulley and bearing assembly or field coil replacement.

CONTROL-A/C HEATER
DESCRIPTION
MANUAL SINGLE ZONE
The A/C-heater control (1) for the manual temperature
control (MTC) single zoneheating-A/C system allows
one temperature setting for the entire vehicle. All con-
trols are identified by ISO graphic symbols.
The A/C-heater control and integral computer is
located in the instrument panel and contains:
a push button A/C on/off control (2). The Snow-
flake button contains an LED that illuminates
when the A/C system is in operation.
a push button rear window defogger on/off con-
trol (3) when equipped with the optional rear
heated window. The defogger button contains an
LED that illuminates when the rear window
defogger (EBL) system is in operation.
a rotary control knob for recirculation and mode
control of the discharged air (4).
a rotary control knob for temperature control of
thedischargedair(5).
a rotary control knob for fan speed selection and
turning the heating-A/C system off (6).
The A/C-heater control is diagnosed using a scan tool (Refer to 24 - HEATING& AIR CONDITIONING - DIAGNO-
SIS AND TESTING and to 24 - HVAC Electrical Diagnostics for more information).
The A/C-heater control cannot be repaired and, if faulty or damaged, it must be replaced. The illumination lamps for
the A/C-heater control are available for service replacement.
MANUAL DUAL ZONE
The A/C-heater control (1) for the manual temperature
control (MTC) dual zone heating-A/C system allows
both the driver and the front seat passenger the ability
to individually regulate air temperature for their side of
the vehicle. All controls are identified by ISO graphic
symbols.
The dual zone A/C-heater control and integral com-
puter is located in the instrument panel and contains:
a push button A/C on/off control (2). The Snow-
flake button contains an LED that illuminates
when the A/C system is in operation.
a push button MAX A/C air recirculation control
(3). The Recirculation button contains an LED
that illuminates when the recirculation function is
activated for high A/C demand.
a push button rear window defogger on/off con-
trol (4). The defogger button contains an LED
that illuminates when the rear window defogger
system is in operation.
two slid-type control levers for individual driver and front seat passenger temperature control of the discharged
air (5 and 6).
a rotary control knob for mode control of the discharged air (7).
a rotary control knob for fan speed selection and turning the heating-A/C system off (8).

The A/C-heater control is diagnosed using a scan tool (Refer to 24 - HEATING& AIR CONDITIONING - DIAGNO-
SIS AND TESTING and to 24 - HVAC Electrical Diagnostics for more information).
The A/C-heater control cannot be repaired and, if faulty or damaged, it must be replaced. The illumination lamps for
the A/C-heater control are available for service replacement.
REMOVAL
WARNING: On vehicles equipped with airbags, disable the airbag system before attempting any steering
wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the
battery negative (ground) cable, then wait two minutes for the airbag system capacitor to discharge before
performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to
take the proper precautions could result in an accidental airbag deployment and possible personal injury or
death.
NOTE: Single zone A/C-heater control shown. Dual
zone similar.
1. Disconnect and isolate the negative battery cable.
2. Remove the center bezel (1) from the instrument
panel and disconnect the wire harness connectors
(4 and 5) from the back of the A/C-heater control
(2) (Refer to 23 - BODY/INSTRUMENT PANEL/IN-
STRUMENT PANEL CENTER BEZEL -
REMOVAL).
NOTE: Take the proper precautions to protect the
front face of the center bezel from cosmetic dam-
age.
3. Place the center bezel on a workbench and
remove the four screws (3) that secure the A/C-
heater control to the center bezel and remove the
control.
INSTALLATION
NOTE: Single zone A/C-heater control shown. Dual
zone similar.
1. Position the A/C-heater control (2) into the back of
the instrument panel center bezel (1).
2. Install the four screws (3) that secure the A/C-
heater control to the center bezel. Tighten the
screws to 2.2 Nꞏm (20 in. lbs.).
3. Connect the wire harness connectors (4 and 5) to
the back of the A/C-heater control and install the
instrument panel center bezel (Refer to 23 - BODY/
INSTRUMENT PANEL/INSTRUMENT PANEL CEN-
TER BEZEL - INSTALLATION).
4. Reconnect the negative battery cable.