Jeep Grand Cherokee

1993-1999 of release

Repair and car operation



Jeep Grand Cherokee
+ Cars of mark Jeep Grand Cherokee
+ Options and routine maintenance
+ Рядный the six-cylinder engine
+ Engine V8
+ Procedure of the general and engine major repairs
- Systems of cooling, heating and air conditioning
   The general information
   Antifreeze - the general information
   Check of functioning and thermostat replacement
   Check of serviceability and replacement of the fan of system of cooling and муфты its couplings
   Check of functioning and replacement of the block of the gauge of temperature of a cooler
   Removal and installation of a radiator and broad tank of system of cooling
   Check of functioning of the water pump
   Removal and installation of the water pump
   Check of serviceability of an electric contour and replacement of components of the motor of the fan of a heater and air conditioner
   Removal and installation of the block of the fan of a heater
   Removal and installation of assemblage of management by a heater and air conditioner
   Removal and installation of the heat exchanger of a heater
   Check of serviceability and service of systems of heating and air conditioning
   Diagnostics of system of automatic control in temperature (automatic telephone exchange) without its removal from the car
   Removal and installation of the accumulator (store) of a central air of air
   Removal and installation of the compressor of a central air of air
   Removal and installation of the condenser of a central air of air
   Removal and installation of a tube of the calibrated jet
   Removal and installation of the evaporator of a central air
+ The power supply system and release of the fulfilled gases
+ System of an electric equipment of the engine
+ Systems of decrease in toxicity of the fulfilled gases and engine management
+ Manual box of a gear change
+ Automatic transmission
+ Distributing box
+ Coupling and трансмиссионная a line
+ Brake system
+ Suspension bracket and steering
+ Body
+ System of an onboard electric equipment
+ Controls and operation receptions

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Check of serviceability of an electric contour and replacement of components of the motor of the fan of a heater and air conditioner

Contour check

 PERFORMANCE ORDER

  1. Check up all safety locks and electric sockets of a contour on reliability of fastening and presence of traces of corrosion. Make sure that the battery is completely charged.
  2. Having translated transmission in position Р (Parking) and having cocked a lay brake, turn the ignition key in position ON (without starting the engine).
  3. The heater fan is located under a ware box of the panel of devices, near to a partition of an impellent compartment. Unbend a clip on one of screws of fastening of the motor of the fan and liberate from it a plait of wires. Delay a plait downwards, facilitating thereby рассоединение an electric socket.
  4. Connect to an electric socket of the motor of the fan of a heater the voltmeter.
  1. Disunite an electric socket of the motor of the fan of a heater and connect to attached to a plait of wires to its half voltmeter.
  1. Consistently switch the fan switch in all positions, watching instrument readings. Change of fixed pressure speaks about respective alterations in speed of rotation of the fan (at switch switchings). To the minimum speed there corresponds the minimum pressure of a food while while translating the switch in position of the highest speed a food on the fan moves bypassing the resistor and reaches the maximum value in 12 Century
  2. If pressure is fixed, but the fan does not rotate, establish a crosspiece between the plug of grounding of the motor and "good" weight of the chassis of the car. The wire equipped with a safety lock connect between the positive plug of the battery and the positive plug of half of socket from outside the motor. If now the motor starts to rotate, remove additional wires (crosspiece) and if the motor at crosspiece switching-off on weight immediately stops, check up reliability of grounding of the motor. If after entering of corrections the motor does not start to function, most likely it is faulty.
  1. Connect the tyre of grounding and the wire equipped with a safety lock from the positive plug of the battery directly to half of electric socket of the fan from outside the motor and check up, whether the motor will join now.

Resistive assemblage of the motor of the fan of a heater

Resistive assemblage of the fan is located on a heater casing. On an assemblage payment some resistors corresponding to four speeds of rotation of the fan are established.

Site of resistive assemblage of the fan of a heater.


 PERFORMANCE ORDER

  1. Remove assemblage from the seat and examine it on presence of damages. Check up conductivity of assemblage between all its plugs. If as a result of an overheat the restrictive contour appears is broken off, it is necessary to make corresponding replacement, establishing only identical replaceable components.
  1. Unscrew two screws and get from the holder the resistor of the motor of the fan.
  1. By means of the voltmeter check up a contour between the switch of the fan and the resistor, measuring pressure on резисторном the plait end. Check up each wire on each of speeds.

The motor functions only on one of speeds

 PERFORMANCE ORDER

  1. If pressure on the motor is absent, disunite an electric socket of resistive assemblage and check up on presence of its pressure. If a food is present only on socket plugs, check up conductivity of resistive assemblage and a wire between assemblage and the motor. A wire check up also on presence of signs of short circuit.
  2. If pressure on assemblage is absent, remove the control panel a heater (Has undressed Removal and installation of assemblage of management by a heater and air conditioner) and, having turned the ignition key in position ON, measure pressure on a socket of the switch of the motor of the fan of a heater.
  3. If pressure is absent, check up conducting between the assembly block of safety locks and the switch on breakage and short circuit.
  4. If pressure takes place, connect one end of a long wire to запитанной to the plug of a socket of the switch. The second end of a wire serially connect to each of food plugs on resistive assemblage. If now the motor functions normally, replace the switch.