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
+ 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
   General information and precautionary measures
   Search of causes of failures of electric equipment
   Safety locks and fusible inserts - the general information
   Chain breakers - the general information
   The relay - the general information and check of serviceability of functioning
   Check of serviceability of functioning and replacement of the breaker of indexes of turns / alarm system
   Check of serviceability of functioning and replacement of podrulevy switches
   Check of serviceability of functioning and replacement of the switch of ignition and lock of blocking of a steering column
   Check of serviceability of functioning and replacement of switches of the dashboard
   Check of serviceability of functioning of measuring instruments of temperature of the engine and fuel consumption
   Removal and installation of a combination of devices
   Removal and installation of a radio receiver and loudspeakers
   Removal and installation of the aerial of a radio receiver
   Replacement of lamps of head headlights
   Adjustment of the direction of optical axes of head headlights
   Removal and installation of block headlights
   Replacement of lamps
   Check of serviceability of functioning, removal and installation of the electromotor of a drive of screen wipers
   Check of serviceability of functioning and replacement of horns of a horn
   Running fires of light time of day (DRL)
   Check of serviceability of functioning and regenerative repair of a heater of back glass
   Control system of speed (темпостат) - general information and check of serviceability of functioning
   The electric drive of window regulators - general information and check of serviceability of functioning
   The uniform lock - general information and check of serviceability of functioning
   The electric drive of external rear-view mirrors - general information and check of serviceability of functioning
   The electric drive of the top hatch - general information and check of serviceability of functioning
   The electric drive of forward seats - general information and check of serviceability of functioning
   Transfer of management by functioning of onboard consumers of the electric power on switched lines
   Safety cushions - the general information
   + Schemes of electric connections





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Safety locks and fusible inserts - the general information

Safety locks

Various combinations of safety locks, breakers of a chain and fusible inserts are applied to protection of contact chains of electric equipment of the car. Assembly blocks, are established under the dashboard and in an impellent compartment of a vehicle. The scheme of placement of blocks can vary depending on model and year of release of the car.


Each separate safety lock is used for protection of any concrete electric contour or at once several contours. The ID card of placement of safety locks in the assembly block is usually glued to a cover of the last, from its internal party.

In assembly blocks the safety locks of a compact design equipped with bayonet contact plugs, and if necessary easily taken by fingers from the nests in the block are located. At refusal any of consumers of the electric power first of all always it is necessary to check a condition of the corresponding safety lock. Turn a key in the ignition lock in the situation ON and by means of a lamp sampler probe open plugs of each of safety locks. If the lamp lights up at connection to each of plugs, therefore, a safety lock as it should be. If tension takes place only from food giving, means, the safety lock fused. Let's notice also that usually the case of a safety lock is made of transparent plastic through which it is easy to define a condition of a working crossing point.


At replacement of the fused safety lock strictly watch that the established replaceable corresponded on type left of an element. The safety locks calculated on a various nominal current physically can differ nothing from each other, without being thus interchangeable. Each of electric chains has various working parameters and needs various extent of protection therefore replacement of the safety lock calculated on a certain current, not corresponding to it on parameters is fraught with the most serious consequences (up to fire emergence). Working parameters of a safety lock (a nominal current) are usually designated on its plastic case.

If the new safety lock after installation also fails at once, it is not meaningful to make its further replacement, - before it is necessary to reveal and eliminate the reason of emergence of an overload in a chain. In most cases that appears the short circuit of connecting electroconducting caused by damage of its isolation.
Fusible inserts

Fusible inserts are used for protection of chains in which for any reason usual safety locks, such as a contour of system of ignition, and also for power chains in which the vysokoamperny current circulates cannot be used.

On models considered in the real Management fusible inserts are placed in the assembly block of safety locks located in an impellent compartment.

For replacement of a fusible insert disconnect a negative wire from the battery and, having pulled failed an element, take it from the landing nest.

 If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that have the correct combination for audiosystem input in action! Before establishing to the place of the failed fusible insert the new it is necessary to find out and eliminate the reason of a taking place overload.