Toyota Camry

1996-2001 of release

Repair and car operation

Kamri's Toyota
+ 1. Maintenance instruction
+ 1.2. Information before car driving
+ 1.3. Independent maintenance
+ 1.4. Technical characteristics
+ 1.5. Some councils upon car purchase
+ 2. Maintenance
- 3. Engines
   + 3.1.2. Compression check
   + 3.2. 6-cylinder dvukhryadny engines of V6 3,0 l
   + 3.3. Partition of engines
   - 3.4. Engine electric equipment
      3.4.2. Technical characteristics
      3.4.3. Storage battery
      3.4.4. Power cables
      3.4.5. Ignition system
      3.4.6. Coil (and) ignitions
      3.4.7. Check of the moment of ignition
      3.4.8. Block of electronic ignition
      3.4.9. System of a charge of the battery
      3.4.10. Generator
      3.4.11. Tension and brush regulator
      3.4.12. System of start-up of the engine
      3.4.13. Starter electric motor
      3.4.14. Traction relay
      3.4.15. Main malfunctions of electric equipment
      3.4.16. That it is necessary to know to the owner of the car with the injector engine
      3.4.17. Turbo doctor
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmission
+ 9. Running gear
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment

3.4.5. Ignition system

GENERAL INFORMATION

Standard system of ignition of considered cars

1. Sensor of rotation of a cam-shaft
2. Sensor of rotation of the crankshaft
3. Other sensors

4. From the battery
5. Ignition coil
6. Candle

Considered cars are equipped with ignition system without the distributor (so-called DIS system) in which one coil is the share of two cylinders.

In DIS system two-spark ignition is used. The spark appears at the same time in two cylinders, the piston of one makes a compression step, and another – a release step. And, in the first of these cylinders the capacity of the spark category much more exceeds category capacity in the second in which the spark is used only for reburning of the remains of not burned down gas mixture. On V6 engines the spark is created in pairs of cylinders 1-4, 2-5, 3-6, and in 4-cylinder – 1–4 and 3–2.

The structure of DIS system of ignition includes sensors of rotation of a cam-shaft and the crankshaft, the processor (PCM module), coils and the electronic module. The processor forms identification signals for each cylinder which start the electronic module switching coils of ignition. The processor block automatically regulates the ignition moment in reply to the signals arriving from various sensors of the car. The electronic module distributes signals on the corresponding coils and sets delay time before coil switching according to a current in primary chain.

On V6 engines of a candle of the left head of cylinders are inserted directly into sockets on coils, and candles of the right head of cylinders incorporate to coils wires. On 4-cylinder engines of the coil are mounted near a head of cylinders, candles incorporate to coils wires. The electronic module is mounted on V6 engines near the main cylinder of brakes, under the assembly block of the relay, on 4-cylinder engines the module is built in in not folding way a casing of coils and changes together with them.

Prevention

At refusal of start-up of the engine do not leave ignition included for a while bigger 10 minutes.

Connect a tachometer according to the instruction of the manufacturer. Some tachometers are incompatible with system of electric equipment of the car. Before acquisition of a tachometer consult in car-care center service.

Do not allow a contact of conclusions of the coil of ignition with weight.

It is forbidden to disconnect the battery from weight on the working engine.

Constantly watch that the block of electronic ignition was reliably connected to weight.

Check

If the engine is not started, and the starter rotates the crankshaft, disconnect a wire from a candle of the left cylinder and connect to a test rated sportsman. The rated sportsman should be specially intended for DIS system check.

Start the engine and check spark existence.

If the spark is observed, turn out candles and check their condition.

Prevention

On the V6 engine for check be connected to the wires conducting to a back head of cylinders.

If the spark is absent, or an iskroobrazovaniye unstable, check tension from the battery on each coil. If tension is, check resistance of windings of the coil.

For tension check on the coil on the 4-cylinder engine disconnect the socket, include ignition and attach the voltmeter to a conclusion of 1 socket (check is carried out on the idle engine).

For tension check on the coil on the V6 engine disconnect the socket, include ignition and attach the voltmeter to a conclusion of 1 socket (check is carried out on the idle engine).

Check sensors of rotation of shaft (see subsection 7.2.10., subsection 7.2.11.).

Check on coils a signal from the processor (on the 4-cylinder engine) or from the electronic block (on the V6 engine).

For this purpose on the 4-cylinder engine check existence of tension 5 In on a conclusion 3 sockets of the coil at the included ignition.

Check also existence of fluctuating tension 0,1–4,0 In on a conclusion 2 sockets (for this purpose the assistant should include a starter). If on sockets of coils tension does not correspond to these norms, replace or repair the processor block, otherwise 5 replace the coil with the electronic block.

On the 6-cylinder engine existence of a signal is checked by light-emitting diode connection on 12 In on a conclusion 2 sockets which should blink at starter inclusion. If the blinking is absent, check the electronic block of ignition (see subsection 3.4.8.).