Chrysler 1998 Voyager Service Manual page 1867

NS/GS
GENERAL INFORMATION
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY PRECAUTIONS AND WARNINGS . . . . 2
DESCRIPTION AND OPERATION
A/C PRESSURE TRANSDUCER . . . . . . . . . . . . 2
A/C SERVICE PORTS . . . . . . . . . . . . . . . . . . . . 2
AIR DISTRIBUTION DUCTS . . . . . . . . . . . . . . . 2
COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . 2
COMPRESSOR HIGH-PRESSURE RELIEF
VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . 3
ENGINE COOLING SYSTEM REQUIREMENTS . 3
EVAPORATOR PROBE . . . . . . . . . . . . . . . . . . . 3
HANDLING TUBING AND FITTINGS
HVAC CONTROL MODULE . . . . . . . . . . . . . . . . 3
SIDE DOOR HEATER A/C OUTLETS
SIDE WINDOW DEMISTER . . . . . . . . . . . . . . . 4
SYSTEM AIRFLOW
SYSTEM OIL LEVEL . . . . . . . . . . . . . . . . . . . . . 4
DIAGNOSIS AND TESTING
A/C PERFORMANCE TEST . . . . . . . . . . . . . . . 11
A/C PRESSURE TRANSDUCER . . . . . . . . . . . 11
ACTUATOR CALIBRATION/DIAGNOSTICS AND
COOLDOWN TEST . . . . . . . . . . . . . . . . . . . . . 5
BLOWER MOTOR AND WHEEL ASSEMBLY . 12
COMPRESSOR CLUTCH/COIL . . . . . . . . . . . . 12
COMPRESSOR NOISE DIAGNOSIS . . . . . . . . 12
EXPANSION VALVE . . . . . . . . . . . . . . . . . . . . 14
HEATER PERFORMANCE TEST . . . . . . . . . . . 14
HVAC CONTROL DIAGNOSTIC CONDITIONS . 9
SYSTEM CHARGE LEVEL TEST . . . . . . . . . . . 15
GENERAL INFORMATION
INTRODUCTION
The Heater, or Heater and Air Conditioning sys-
tems share many of the same components. This
group will deal with both systems together when
component function is common, and separately when
they are not.
For proper operation of the instrument panel con-
trols, refer to the Owner's Manual provided with the
vehicle.
HEATING AND AIR CONDITIONING
. . . . . . . . 3
. . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . 4
HEATING AND AIR CONDITIONING
CONTENTS
page
SERVICE PROCEDURES
CHARGING REFRIGERANT SYSTEM . . . . . . . 17
EVACUATING REFRIGERANT SYSTEM . . . . . 17
R-134a REFRIGERANT . . . . . . . . . . . . . . . . . . 16
STICKING HVAC CONTROL MODULE PUSH
BUTTONS . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SYSTEM LEAK CHECKING . . . . . . . . . . . . . . . 19
THERMOCOUPLE PROBE
REMOVAL AND INSTALLATION
A/C PRESSURE TRANSDUCER . . . . . . . . . . . 19
A/C SERVICE PORTS . . . . . . . . . . . . . . . . . . . 19
BLEND-AIR DOOR ACTUATOR
BLOWER MOTOR AND WHEEL ASSEMBLY . 20
BLOWER MOTOR RESISTOR BLOCK . . . . . . 21
BLOWER MOTOR WHEEL . . . . . . . . . . . . . . . 22
COMPRESSOR (2.5L TURBO DIESEL) . . . . . 22
CONDENSER ASSEMBLY . . . . . . . . . . . . . . . . 23
DISCHARGE LINE
EVAPORATOR PROBE . . . . . . . . . . . . . . . . . . 24
EXPANSION VALVE . . . . . . . . . . . . . . . . . . . . 25
FILTER-DRIER ASSEMBLY . . . . . . . . . . . . . . . 26
HEATER A/C UNIT HOUSING . . . . . . . . . . . . . 26
HEATER CORE . . . . . . . . . . . . . . . . . . . . . . . . 26
HEATER HOSES . . . . . . . . . . . . . . . . . . . . . . . 28
LIQUID LINE
MODE DOOR ACTUATOR . . . . . . . . . . . . . . . . 29
RECIRC DOOR ACTUATOR . . . . . . . . . . . . . . 30
SIDE WINDOW DEMISTER DUCTS . . . . . . . . 29
SUCTION LINE . . . . . . . . . . . . . . . . . . . . . . . . 29
DISASSEMBLY AND ASSEMBLY
HEATER A/C UNIT RECONDITION . . . . . . . . . 30
All vehicles are equipped with a common Heater
A/C unit housing assembly. When the vehicle has
only a heater system, the evaporator and recirculat-
ing air door are omitted.
An optional zone control HVAC unit is available.
This unit has dual blend-air doors that can be regu-
lated independently of each other. The temperature
setting can be different from driver's side to passen-
ger side.
. . . . . . . . . . . . . . . 18
. . . . . . . . . . . 20
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. . . . . . . . . . . . . . . . . . . . . . . . . 28
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