Nissan Maxima QX

since 1993 of release

Repair and car operation


Nissan Maxima QX
+ Nissan Maxima brand Cars
+ Maintenance instruction
+ Settings and routine maintenance
+ Engine
- Systems of cooling, heating
   General information
   Antifreeze - general information
   Check of serviceability of functioning and thermostat replacement
   Check of a condition of fans of system of cooling and chains of their inclusion, replacement of components
   Removal and installation of a radiator and expanded tank of system of cooling
   Check of a condition and replacement of the water pump
   Check of serviceability of functioning and replacement of the block of the sensor of a measuring instrument of temperature of cooling liquid
   Check of serviceability of functioning of the driving electromotor of the fan of a heater and condition of components of its electric chain, …
   Removal and installation of the electromotor of a drive of the fan of a heater
   Removal and installation of assembly of the control panel by functioning of a heater and air conditioner, adjustment of a driving cable
   Removal and installation of the heat exchanger of a heater
   Check of serviceability of functioning and service of systems of heating and air conditioning
   Removal and receiver dehumidifier installation To/in
   Removal, service and To/in compressor installation
   Removal and To/in condenser installation
+ Power supply system and release
+ engine Electric equipment
+ Control systems of the engine
+ Transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
 9a1e70e9 .


Check of serviceability of functioning and replacement of the block of the sensor of a measuring instrument of temperature of cooling liquid

Start procedure performance only after complete cooling of the engine! See also preventions at the beginning of the Section Antifreeze - general information. Remember that at the included ignition the fan of system of cooling can work even at the muffled engine.

CHECK

 PERFORMANCE ORDER

1. The system of indication of temperature of cooling liquid consists of the measuring instrument built in in an instrument guard and the information sensor placed on the engine. On the car some CTS sensors are provided, however, in system of indication one of them is used only.

2. If at unequivocally cold engine the measuring instrument fixes an overheat, check electroconducting on a chain site between an instrument guard and the sensor block on existence of signs of short circuit on weight.
3. If the measuring instrument does not function at all (the arrow remains motionless even after 10-minute warming up of the engine) at serviceable safety locks, muffle the engine and disconnect electroconducting from the temperature sensor. By means of a wire crossing point close a sensor wire on weight. For short time include ignition, without starting the engine. If the arrow of the indicator deviates till the end of a scale, replace the sensor.
4. For check of the sensor disconnect from it electroconducting and connect an ohmmeter between the probe in the top part of the sensor and mass of the power unit. At slightly heated-up engine (about 60°С) the indication of an ohmmeter should make about 70 ÷ 90 Ohm for models till 1998 вып. and 170 ÷ 200 Ohm for models of 1999 вып. After engine warming up to temperature 100°С instrument reading should fall to value (21 ÷ 24) / (47 ÷ 53) Ohm respectively, otherwise replace the temperature sensor.

REPLACEMENT

 PERFORMANCE ORDER

Turn out the sensor from the engine (prepare for collecting spilled liquid) and quickly establish on its place new which carving previously grease with current-carrying hermetic (not a teflon tape or a tape FUM). In summary check level of cooling liquid.