2006 DODGE RAM SRT-10 Service Repair Manual

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Page 5153 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual CORE-VALVE-SERVICE PORT
DESCRIPTION
Two refrigerant system service ports are used to recover/recycle/evacuate/charge and test the A/C refrigerant sys-
tem. Unique sizes are used on the service ports f

Page 5154 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual INSTALLATION
NOTE: Typical A/C service port shown.
1. Lubricate the valve core (3) with clean refrigerant
oil prior to installation. Use only refrigerant oil of
the type recommended for the A/C compre

Page 5155 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual COUPLER-REFRIGERANT LINE
DESCRIPTION
Spring-lock type refrigerant line couplers (1 and 4) are
used to connect the A/C suction line (6) to the A/C
accumulator (5) and, the A/C accumulator and the A/C
l

Page 5156 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 1. Recover the refrigerant from the refrigerant system
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - STANDARD PROCEDURE -
REFRIGERANT SYSTEM RECOVERY).
2. Remove the secondary retaining clip f

1. Recover the refrigerant from the refrigerant system
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - STANDARD PROCEDURE -
REFRIGERANT SYSTEM RECOVERY).
2. Remove the secondary retaining clip from the
spring-lock type refrigerant line coupler.
3. Fit the proper size A/C line disconnect tool (Special
Tool Kit 7193 or equivalent) over the coupler cage
(1).
4. Close the two halves of the A/C line disconnect tool
around the coupler (2).
NOTE: The garter spring may not release if the A/C
line disconnect tool is cocked while pushing it
into the coupler cage opening.
5. Push the A/C line disconnect tool into the open
side of the coupler cage to expand the garter
spring (3). Once the garter spring is expanded, pull
on the refrigerant line attached to the female half of
the coupler until the flange on the female fitting is
separated from the garter spring and cage on the male fitting.
6. Open and remove the A/C line disconnect tool from the refrigerant line coupler (4).
INSTALLATION
1. Clean any dirt or foreign material from the spring-
lock type refrigerant line coupler.
2. Check to make sure that the garter spring (6) is
located within the cage (7) of the male half of the
refrigerant line coupler (1), and that the garter
spring is not damaged.
a. If the garter spring is missing, install a new
spring by pushing it into the coupler cage
opening.
b. If the garter spring is damaged, remove it from
the coupler cage with a small hook (DO NOT
use a screwdriver) and install a new garter
spring.
CAUTION: Use only the specified O-rings as they
are made of a special material for the R-134a system. The use of any other O-rings may allow the connec-
tion to leak.
3. Install new O-rings (8) on the male half of the refrigerant line coupler.
4. Lubricate the O-rings, and the inside of the female half of the refrigerant line coupler (2) with clean R-134a refrig-
erant oil. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.
5. Position the female half of the coupler over the male half of the coupler.
6. Push together firmly on the two halves of the refrigerant line coupler until the garter spring in the cage on the
male half of the coupler snaps over the flanged end on the female half of the coupler.
7. Make sure that the refrigerant line coupler is fully engaged by firmly pulling the refrigerant lines away from each
other on both sides of the coupler.
8. Install the secondary retaining clip (3) over connected coupler cage (5).
9. Evacuate the refrigerant system (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - STANDARD PRO-
CEDURE - REFRIGERANT SYSTEM EVACUATE).

Page 5157 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 10. Charge the refrigerant system (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - STANDARD PRO-
CEDURE - REFRIGERANT SYSTEM CHARGE).

Page 5158 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual EVAPORATOR-A/C
DESCRIPTION
The A/C evaporator (1) for the heating-A/C system is
located within the HVAC housing, behind the instru-
ment panel. The A/C evaporator and its insulator (2)
are positioned

Page 5159 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual INSTALLATION
NOTE: If the A/C evaporator is being replaced, add 60 milliliters (2 fluid ounces) of refrigerant oil to the
refrigerant system. Use only refrigerant oil of the type recommended for the A

Page 5160 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual FAN-A/C CONDENSER
DESCRIPTION
All models equipped with gasoline engines, except
SRT 8, use an electric cooling fan to help pull heat out
of the A/C system, especially during idle conditions.
Without a

FAN-A/C CONDENSER
DESCRIPTION
All models equipped with gasoline engines, except
SRT 8, use an electric cooling fan to help pull heat out
of the A/C system, especially during idle conditions.
Without a cooling fan, A/C high side pressures would
increase and A/C system performance would eventu-
ally deteriorate.
The A/C condenser fan consists of a plastic fan blade
assembly which is driven by a 12-volt direct current
(DC) motor (1) with an integral wire harness connector
(2). The A/C condenser fan is mounted within a plastic
shroud (3) behind the A/C condenser (4) located in the
left front of the engine compartment.
OPERATION
The A/C condenser fan used in gasoline engine equipped models (except SRT 8) is controlled by the powertrain
control module (PCM). When the A/C-heater control is set to any A/C position, it sends a request signal on the
CAN-B bus to the totally integrated power module (TIPM), which then transfers the request on the CAN-C Bus to
the PCM/ECM, which sends a signal on a dedicated hard-wired circuit to the totally integrated power module (TIPM)
to energize the internal A/C condenser fan high side driver. When energized, the A/C condenser fan high side driver
provides battery current to the condenser fan motor.
The A/C condenser fan control system isdiagnosed using a scan tool (Refer to 24 - HVAC Electrical Diagnostics for
more information).
The components of the A/C condenser fan cannot be repaired and, if faulty ordamaged, they must be replaced as
an assembly.
REMOVAL
WARNING: Refer to the applicable warnings and cautions for this system before performing the following
operation (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - WARNINGS) and (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING - CAUTIONS). Failure to follow the warnings and cautions could result
in possible personal injury or death.
1. Recover the refrigerant from the refrigerant system
(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING - STANDARD PROCEDURE -
REFRIGERANT SYSTEM RECOVERY).
2. Disconnect and isolate the negative battery cable.
3. Disconnect the A/C discharge line and the A/C liq-
uidlinefromtheA/Ccondenser(Referto24-
HEATING & AIR CONDITIONING/PLUMBING/
LINE-A/C DISCHARGE - REMOVAL) and (Refer to
24 - HEATING & AIR CONDITIONING/PLUMBING/
LINE-A/C LIQUID - REMOVAL).
4. Disconnect the wire harness connector (8) from the
A/C condenser cooling fan motor (7).

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