Jeep Grand Cherokee

1993-1999 of release

Repair and car operation



Jeep Grandee Cheroki
+ Jeep Grand Cherokee brand Cars
+ Settings and routine maintenance
+ Ryadny six-cylinder engine
+ V8 Engine
+ Procedures of the general and major maintenance of the engine
- Systems of cooling, heating and air conditioning
   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 coupling of its coupling
   Check of functioning and replacement of the block of the sensor 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 assembly 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 central air of air
   Removal and installation of the compressor of central air of air
   Removal and installation of the condenser of central air of air
   Removal and installation of a tube of the calibrated jet
   Removal and installation of the evaporator of central air
+ the Power supply system and production of the fulfilled gases
+ System of electric equipment of the engine
+ Systems of decrease in toxicity of the fulfilled gases and engine management
+ Manual box of gear shifting
+ Automatic transmission
+ Transfer case
+ Coupling and transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
+ System of onboard electric equipment
+ Governing bodies and operation receptions



Diagnostics of system of automatic control in temperature (automatic telephone exchange) without its removal from the car

Diagnostics of serviceability of functioning of automatic telephone exchange system is impossible at the disconnected battery. If you for any reason are going to disconnect the battery, before make this check.

Some of models of cars of the Jeep Grand Cherokee brand are equipped with system of automatic control in temperature (automatic telephone exchange) which structure includes also digital indicator (display) which has been built in in the dashboard. The system allows to make nabortny (without removal from the car) diagnostics of malfunctions of its entrance and target contours and to define as current, refusals so taking place earlier. By refusals taking place earlier are meant such which withdrew at the moment, they usually result from the violation of quality of the electric contacts which has occurred during performance of procedures of service of any other components.

The automatic telephone exchange system control panel (below) in comparison with the standard manual panel equipped with three rotating switches (above).

In a diagnostic mode the same part of a working surface of the screen of the display which serves for temperature indication works.

The top left part of the screen of the display, usually serving for temperature indication (two figures)) serves in a mode of diagnostics of malfunctions of system (it is shown in drawing - is absent the arrow indicating to the little man (see an illustration above) for removal of codes of malfunctions (with 0 on 99).

If in automatic telephone exchange system there is any failure, on the display each time at inclusion of ignition appears (once the error message ("ER") lights up).

For an entrance in diagnostics mode at the same time squeeze out the EXPERT and RECIRC buttons and, holding them pressed, turn on one click clockwise the handle of management of a temperature mode. Thus will join all screen of the display (segmentary check) (will light up).

After an otpuskaniye of buttons in the left part of the screen there will be a digital code "00" (a choice of level of check).

Now press one (any) of mentioned above buttons. On the screen there should be a figure representing the sitting person that speaks about the entrance in diagnostics mode. If in memory are stored any of 64 (with 1 on 64) malfunction codes, they will be displayed. Write down the highlighted codes and verify them with the card of malfunctions (see the table below), revealing the sites of system needing more detailed check. In case of existence of codes with 25 on 29 before starting to further checks it is necessary to replace the module of management of automatic telephone exchange.

Codes of the current refusals will be erased in process of introduction of corrections. For removal of codes of taking place earlier and self-liquidated malfunctions both buttons on the panel are necessary to squeeze out and to hold them pressed during not less than 3 seconds. Emergence testifies to deleting of codes on the screen of the display of two horizontal hyphens.

Diagnostics of automatic telephone exchange system allows to reveal malfunctions both entrance, and target its contours. However, if the amateur mechanic cannot find the taking place reason in a database of codes of malfunctions (see the card of codes lower), originators of the Management recommend to the owner of the car to address for consultation and the help in dealer office.

Card of codes of nabortny diagnostics of system of automatic control in temperature (automatic telephone exchange)

Malfunction code

Malfunction description

Place in a contour

0
there are no refusals Normal functioning
1
break in a contour Ambient temperature sensor
2
break in a contour The temperature sensor in car salon
3
break in a contour Entrance contour of the photo diode
4
break in a contour Entrance of the fan of the forward control panel fan
5
break in a contour Entrance of management of a mode of the forward panel
6
break in a contour Contour of feedback of a mixing air zaslonka
7
break in a contour Contour of feedback of a zaslonka of modes
8
too high feedback Contour of a food of the fan of the heater/fan
9
short circuit in a contour Sensor of surrounding temperature
10
short circuit in a contour The temperature sensor in car salon
11
short circuit in a contour Entrance contour of the photo diode
12
short circuit in a contour Entrance of the fan of the forward control panel fan
13
short circuit in a contour Entrance of management of a mode of the forward panel
14
short circuit in a contour Contour of feedback of a mixing air zaslonka
15
short circuit in a contour Contour of feedback of a zaslonka of modes
16
too low feedback Contour of a food of the fan of the heater/fan
17
error of switching of an entrance Entrance of width of an impulse of PWD
19
the zaslonka does not react Contour of feedback of a zaslonka of modes
20
the zaslonka does not react Contour of a drive of the actuation mechanism of a mixing air zaslonka
21
too zaslonka low speed Contour of feedback of a zaslonka of modes
22
the zaslonka course is too great Contour of feedback of a zaslonka of modes
23
too zaslonka low speed Contour of a drive of the actuation mechanism of a mixing air zaslonka
24
the zaslonka course is too great Contour of a drive of the actuation mechanism of a mixing air zaslonka
25
error of data of calibration These calibrations and CPU
26
loss of the message on cooler temperature Entrances of definition of collisions of C2D BUS
27
loss of the message on speed of movement of the car Entrances of definition of collisions of C2D BUS
28
loss of the message on engine turns Entrances of definition of collisions of C2D BUS
29
error of CPU These calibrations and CPU
33
contour break took place Ambient temperature sensor
34
contour break took place The temperature sensor in car salon
35
contour break took place Entrance contour of the photo diode
36
contour break took place Entrance of the fan of the forward control panel fan
37
contour break took place Entrance of management of a mode of the forward panel
38
contour break took place Contour of feedback of a mixing air zaslonka
39
contour break took place Contour of feedback of a zaslonka of modes
40
too high feedback Contour of a food of the fan of the heater/fan
41
short circuit in a contour took place Ambient temperature sensor
42
short circuit in a contour took place The temperature sensor in car salon
43
short circuit in a contour took place Entrance contour of the photo diode
44
short circuit in a contour took place Entrance of the fan of the forward control panel fan
45
short circuit in a contour took place Entrance of management of a mode of the forward panel
46
short circuit in a contour took place Contour of feedback of a mixing air zaslonka
47
short circuit in a contour took place Contour of feedback of a zaslonka of modes
48
too low feedback Contour of a food of the fan of the heater/fan
49
the error of switching of an entrance took place Entrance of width of an impulse of PWD
51
the zaslonka did not react Contour of feedback of a zaslonka of modes
52
the zaslonka did not react Contour of a drive of the actuation mechanism of a mixing air zaslonka
53
the course of a zaslonka was too small Contour of feedback of a zaslonka of modes
54
the course of a zaslonka was too great Contour of feedback of a zaslonka of modes
55
the course of a zaslonka was too small Contour of a drive of the actuation mechanism of a mixing air zaslonka
56
the course of a zaslonka was too great Contour of a drive of the actuation mechanism of a mixing air zaslonka
57
the error of calibration data took place These calibrations and CPU
58
loss of the message on cooler temperature took place Entrances of definition of collisions of C2D BUS
59
loss of the message on speed of movement of the car took place Entrances of definition of collisions of C2D BUS
60
loss of the message on engine turns took place Entrances of definition of collisions of C2D BUS
61
the error of CPU took place These calibrations and CPU