Jeep Cherokee (XJ): Diagnosis and testing
Jeep Cherokee (XJ) 1984 - 2001 Service Manual > Heating and air conditioning > Diagnosis and testing
- A/C performance
- Blower motor. Blower motor relay. Blower motor resistor
- Blower motor switch. Compressor. Compressor clutch coil
- Compressor clutch relay. Dual function high pressure switch/high pressure cut-off switch. Heater performance
- Low pressure cycling clutch switch. Refrigerant system leaks. Vacuum system
DESCRIPTION
The vacuum reservoir is mounted to the front
bumper bar behind the passenger side bumper end
cap. The bumper end cap must be removed from the
vehicle to access the vacuum reservoir for ...
The air conditioning system is designed to provide
the passenger compartment with low temperature
and low humidity air. The evaporator, located in the
heater-A/C housing on the dash panel below the ...
Other materials:
Power grounds. Power steering pressure switch-
pcm input. Sensor return-pcm input
Power grounds
OPERATION
The Powertrain Control Module (PCM) has 2 main
grounds. Both of these grounds are referred to as
power grounds. All of the high-current, noisy, electrical
devices are connected to these grounds as well as
all of the sensor returns. The sensor return comes
into the senso ...