Repair and Toyota Corolla car operation - 6.5.8. Detonation sensor//Toyota Corolla of 1992-1998 /

Toyota Corolla

1992-1998 of release

Repair and car operation



Toyota Corolla
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Systems of cooling, heating
+ 5. Fuel, exhaust systems
- 6. System of decrease in toxicity
   6.1. Specifications
   6.2. Electronic control system
   6.3. Electronic control unit
   + 6.4. System of onboard diagnostics
   - 6.5. Sensors of system of automatic control of the engine
      6.5.1. The sensor of temperature of cooling liquid
      6.5.2. Sensor of concentration of oxygen
      6.5.3. Sensor of an angle of rotation of a butterfly valve (TPS sensor)
      6.5.4. The sensor of absolute pressure on a soaking-up collector (MAR-datchik)
      6.5.5. The air temperature sensor on a soaking-up collector (IAT sensor)
      6.5.6. Temperature sensor of system retsirkulyatsiya (EGR sensor)
      6.5.7. Sensor of speed of the car (VSS sensor)
      6.5.8. Detonation sensor
      6.5.9. Sensor of an angle of rotation of the crankshaft
   6.6. Catching system паров gasoline
   6.7. System retsirkulyatsiya (EGR system)
   6.8. System of compulsory ventilation of a case (PCV system)
   6.9. Catalytic converter
+ 7. Transmissions
+ 8. Coupling and semi-axes
+ 9. Brake system
+ 10. Suspension bracket and steering
+ 11. Body
+ 12. Electric equipment



6.5.8. Detonation sensor

GENERAL INFORMATION

The octane number deviation from norm in modern brands of gasoline can cause a detonation in the engine. A detonation sometimes call "explosion from a spark". In the absence of a detonation the sensor gives a tension signal in the control unit which provides optimum installation of a corner of ignition. When the sensor of a detonation registers abnormal splashes pressure (detonation) there is a disconnection from the control unit and a corner of an advancing of ignition decreases before detonation disappearance. At any failures in operation of the sensor in memory the code 52 registers.

Check

PERFORMANCE ORDER
1. The detonation sensor (it is specified by an arrow) is established from the interior of the engine (from a partition of a motor compartment), under a soaking-up collector. For access to the sensor of a detonation it is necessary to uncover a soaking-up collector and a soaking-up collector (see subsection 3.1.1.4).
2. Connect an ohmmeter to a conclusion of the sensor and to the case. The device should show the opened chain.
3. If the chain is closed, the sensor replace.