2006 DODGE RAM SRT-10 Service Repair Manual

cruise control glove box charging horn climate control reset

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DODGE RAM SRT-10 2006 Service Repair Manual CLUTCH-A/C COMPRESSOR
DESCRIPTION
NOTE: Denso 10S17 A/C clutch assembly shown.
Visteon HS-18 compressor similar.
The A/C compressor clutch assembly consists of a
stationary electromagnetic field coil

CLUTCH-A/C COMPRESSOR
DESCRIPTION
NOTE: Denso 10S17 A/C clutch assembly shown.
Visteon HS-18 compressor similar.
The A/C compressor clutch assembly consists of a
stationary electromagnetic field coil (4), bearing and
pulley assembly (3), shims (7) and a clutch plate (2)
that is splined to the compressor shaft and secured by
a bolt (1). These components provide the means to
engage and disengage the A/C compressor from the
engine accessory drive belt.
The A/C clutch bearing and pulley assembly on both
A/C compressors are retained to the front of the com-
pressor with a snap ring (6). The A/C clutch field coil
on the Denso 10S17 A/C compressor is also retained
to the front of the compressor using a snap ring (5).
The field coil on the Visteon HS-!8 compressor is
pressed onto the front of the compressor.
OPERATION
The A/C compressor clutch components provide the means to engage and disengage the A/C compressor from the
engine accessory drive belt. When the electromagnetic A/C clutch field coil is energized, it magnetically draws the
clutch plate into contact with the clutch pulley and drives the compressorshaft. When the coil is not energized, the
pulley freewheels on the clutch hub bearing, which is part of the pulley assembly.
A/C compressor clutch engagement is controlled by the powertrain controlmodule (PCM) or the engine control mod-
ule (ECM), depending on engine application. 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 determines if operating conditions arecorrect for A/C clutch engagement.
When all operating conditions have been met, the PCM/ECM sends a signal on adedicated hard-wired circuit back
to the totally integrated power module (TIPM) to energize the internal A/Cclutch high side driver. When energized,
the A/C clutch high side driver provides battery current to the A/C clutch field coil.
The A/C clutch control system is diagnosed using a scan tool (Refer to 24 - HVAC Electrical Diagnostics and to 9
- Engine Electrical Diagnostics for more information).
The A/C compressor clutch components cannot be repaired and, if faulty or damaged, they must be replaced.
DIAGNOSIS AND TESTING
A/CCOMPRESSORCLUTCHCOIL
The A/C compressor clutch coil electrical circuit is controlled by the powertrain control module (PCM) or the engine
control module (ECM) (depending on engine application) through the totally integrated power module (TIPM) (Refer
to 24 - HEATING & AIR CONDITIONING/CONTROLS/COIL-A/C COMPRESSOR CLUTCH -OPERATION for more
information). Begin testing of a suspected compressor clutch coil problem by performing the preliminary checks.
PRELIMINARY CHECKS
1. Using a scan tool, check for diagnostic trouble codes (DTCs) in the A/C-heater control, TIPM, PCM/ECM and if
equipped with the 8.3L engine, the gateway module. If no DTCs are found, go to Step 2. If any DTCs are found,
repair as required.
2. If the A/C compressor clutch still will not engage, verify the refrigerant charge level (Refer to 24 - HEATING &
AIR CONDITIONING/PLUMBING - DIAGNOSIS AND TESTING - REFRIGERANT SYSTEM LEAKS). If the refrig-
erant charge level is OK, go to TESTS . If the refrigerant charge level is notOK, adjust the refrigerant charge as
required.

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DODGE RAM SRT-10 2006 Service Repair Manual 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 co

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.

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DODGE RAM SRT-10 2006 Service Repair Manual 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 isola

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DODGE RAM SRT-10 2006 Service Repair Manual 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 ri

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DODGE RAM SRT-10 2006 Service Repair Manual 1. Disconnect and isolate negative battery cable.
2. Remove the accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/BELTS-DRIVE -
REMOVAL).
3. Raise and support the vehicle.
4. Disconnect the e

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DODGE RAM SRT-10 2006 Service Repair Manual NOTE: The pulley and bearing assembly can be
removed from the compressor by hand or, if
required, with a two jaw puller.
10. Remove the pulley and bearing assembly (1) from
the front of the A/C compre

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DODGE RAM SRT-10 2006 Service Repair Manual INSTALLATION
DENSO A/C COMPRESSOR
NOTE: Typical A/C compressor shown in illustrations.
1. Align the dowel pin on the back of the compressor
clutch field coil (2) with the hole in the front of the
A/C

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DODGE RAM SRT-10 2006 Service Repair Manual CAUTION:Thesnapringmustbefullyandprop-
erly seated in the groove or it will vibrate out,
resulting in a clutch failure and severe damage to
the A/C compressor.
NOTE:Anewsnapringmustbeusedtosecure
the

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