Nissan Primera

1990-1992 of release

Repair and operation of the car

Nissan Primera
+ Cars of the Nissan Primera brand
+ Current leaving and service
+ Engine
+ Cooling system and heating
+ A power supply system and production of the fulfilled gases
+ System of electric equipment of the engine
+ Manual transmission, differential and main transfer
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   General information
   Diagnostics of malfunctions of onboard electric equipment - the general information
   Safety locks - the general information
   Fusible inserts (thermal relays) - the general information
   Chain breakers (thermal relays) - the general information
   The relay - the general information
   Explanatory remarks to schemes of electric connections
+ Appendices

Safety locks - the general information

1 — the Suitable safety lock
2 — Fused

Protection of electric contours of the car is provided with application of a combination of safety locks, breakers of a chain and fusible inserts. It is easy to distinguish the burned-down safety lock from its transparent plastic case, serviceable by survey. Attentively examine a safety lock regarding identification of its burn-out. If the safety lock externally looks normally, but suspicions on its malfunction remained, make check of conductivity between the knife plugs acting from its case.

When replacing safety locks you watch compliance replaceable old on type. The safety locks calculated on various current can externally look identical therefore special attention should be paid to marking. Replacement of the burned-down safety lock on calculated on smaller - and especially big - current is undesirable. Each electric contour needs different degree of protection. You watch that marking on the case of a safety lock corresponded to the current on which the corresponding contour is calculated.

If the replaced safety lock immediately fuses, it is not reasonable to continue its replacement. Before it is necessary to reveal and remove the cause of its knocking-out. In most cases that appears the short circuit of an electrical wiring of a contour caused by break or damage of isolation of a wire.