Toyota 4 Runner/Hilux/Surf

1987-1998 of release

Repair and operation of the car

Toyota 4ranner
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Systems of heating, ventilation
+ 5. Fuel and exhaust systems
+ 6. Transmissions
+ 7. Transmission elements
+ 8. Brake system
+ 9. Suspension bracket and steering
+ 10. Body
- 11. Electric equipment
   11.1. Specifications
   11.2. Battery
   + 11.3. System of ignition
   11.4. Coil (i) of ignition
   11.5. Ignition distributor
   11.6. Check and installation of the moment of ignition
   11.7. Block of electronic ignition
   11.8. Induction sensor
   + 11.9. System of a charge of the battery
   + 11:10. Generator
   11:11. System of launch of the engine
   + 11:12. Starter electric motor
   11:13. Traction relay
   11:14. Check of tension
   11:15. Detection of short circuit
   11:16. Check of reliability of grounding
   11:17. Check of integrity of a chain
   11:18. Finding of not closed chain
   11:19. Search of malfunctions
   11:20. Safety locks
   11:21. Fusible crossing points
   11:22. Breakers
   11:23. Relay
   11:24. Breaker of indexes of turn / alarm system
   11:25. Switch of indexes of turn
   11:26. Lock of ignition and drum of the lock
   11:27. Switch of external lighting
   11:28. Screen wiper switch
   11:29. Lamps of headlights
   11:30. Adjustment of headlights
   11:31. Headlight case
   11:32. Replacement of lamps
   11:33. Receiver and loudspeakers
   11:34. Antenna
   + 11:35. Screen wiper electric motor
   11:36. Switch of heating of back glass
   11:37. Heater of back glass
   11:38. Guard of devices
   11:39. Sound signal
   11:40. Electric drive of mirrors
   11:41. Cruise control
   + 11:42. Window regulator electric drive
   11:43. Electric drive of door locks
   11:44. Safety cushions
+ 12. Electrical circuitries


11:19. Search of malfunctions


The consumer, the switches, the relay and wires connected according to the enclosed scheme (see below) are a part of electric chains of the car. Before starting troubleshooting it is necessary to study the scheme and to define a possible source of malfunction. For example, the problem of troubleshooting is considerably facilitated if it is possible to check serviceability of other consumers directly or indirectly connected to the suspected chain.

If the refusal of several consumers is observed, then the break of connection with weight or burn-out of a safety lock is the most probable cause. As a rule failures of electric equipment are caused by weakening of contacts or their corrosion, burn-out of a safety lock or an oplavleniye of a crossing point. Search of malfunctions as a rule is carried out by means of a tester (voltmeter) or a control lamp which are connected between the site of a faulty chain and well smoothed out weight.

Connecting a tester or a lamp consistently on a contour of a chain it is possible to reveal the faulty site which is found on loss of tension or blackout of a lamp.

For search of short circuit in wires it is necessary to get a safety lock of the checked chain and in a gap to connect a lamp or the voltmeter. With a weight points fire of a lamp when rocking wires to short circuit here and there (the tester has to show tension). When checking it must be kept in mind that some consumers receive food at position of the Accessories or Run ignition key.

For check of reliability of connection with weight connect through an ohmmeter (or through a control lamp to the battery) the checked connection of a wire with weight and well smoothed out site of weight. If the ohmmeter shows a chain (or the lamp will light up), then connection with weight reliable. Otherwise the contact with weight is broken. Keep in mind that in most cases weight serves as the return current distributor connecting a chain to a negative pole of the battery. Therefore violation of connection with weight, or a gap in a chain of the return current on the battery, can be the main reason for refusal.