Mazda 626
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Heating and ventilation
+ 5. Fuel system
- 6. Exhaust system
+ 6.1. Exhaust system
- 6.2. Systems of decrease in toxicity of exhausts and management of operation of the engine
6.2.1. Introduction
6.2.2. System of self-diagnostics and codes of malfunction
6.2.3. Central control unit
6.2.4. Sensor of provision of a butterfly valve
6.2.5. Air stream sensor
6.2.6. The sensor of temperature of the arriving air
6.2.7. Sensor of temperature of cooling liquid
6.2.8. Sensor of provision of a bent shaft
6.2.9. Sensor of position of the camshaft
6.2.10. Switch of system of hydrostrengthening of steering
6.2.11. Oxygen sensor
6.2.12. Sensor of detonation combustion of fuel
6.2.13. Speed sensor
6.2.14. Air valve
6.2.15. System of additional air supply on low turns
6.2.16. System of ventilation of a case
6.2.17. System of recirculation of exhaust gases
6.2.18. System of collecting vapors of fuel
6.2.19. Switch of fires of a stoplight
6.2.20. Catalytic converter
+ 7. Transmissions
+ 8. Coupling and half shafts
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electrical circuitries
+ 14. Useful tips
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Control and measuring equipment
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For check of systems of injection of fuel and decrease in toxicity of exhausts it is necessary to use digital universal instrumentations as they have the big accuracy of measurements and bigger resistance of an internal contour. |
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Hand scanners are the most convenient and universal devices for check of control systems of operation of the engine on models of later years of release.
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The OBD-I systems (models till 1995 of release)
The electronic control unit has the built-in system of self-diagnostics (On Board Diagnosis (OBD) system) which serves for search of malfunctions in system and includes a control bulb of the engine on an instrument guard in case of detection of malfunctions. The code of malfunction remains in memory of an electronic control unit and is available to reading.
Reading of codes of malfunction of the OBD-I systems
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For reading of the codes of malfunction which are written down in memory of an electronic control unit connect the STI and GND plugs of the diagnostic socket of connection.
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Connect the voltmeter to the car STO and "weight" plug. Include ignition and count number of a deviation of an arrow of the device or blinkings of a control bulb of the engine. For example, the code 34 will be removed as 3 long blinkings of a bulb, a pause, 4 short blinkings.
Cleaning of codes of malfunction of the OBD-I system
For cleaning of codes of malfunction disconnect a wire of the minus plug of the accumulator and squeeze out a brake pedal longer, than for 5 seconds.
Codes of malfunction of the OBD-I systems (model 1993-1995 of years of release, except models 1994 and 1995 of years of release with the 4-cylinder engine and the automatic transmission)
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MALFUNCTION CODE
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FAULTY ELEMENT OR SYSTEM
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02
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Sensor of provision of a bent shaft
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03
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Sensor of position of the camshaft
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08
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Air stream sensor
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09
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Sensor of temperature of cooling liquid
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11
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Air temperature sensor
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12
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Sensor of provision of a butterfly valve
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15
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Oxygen sensor
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16
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Sensor of the valve of recirculation of exhaust gases
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17
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The oxygen sensor (check a power supply system and ignitions)
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25
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Fuel pressure valve
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26
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Blowing-off valve
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28
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Valve of recirculation of exhaust gases
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29
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Ventilating valve of system of recirculation of exhaust gases
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34
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Air valve of system of idling
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67
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Cooling fan relay
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Codes of malfunction of the OBD-I systems (models 1994 and 1995 of years of release with the 4-cylinder engine and the automatic transmission)
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MALFUNCTION CODE
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FAULTY ELEMENT OR SYSTEM
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111
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Lack of codes of malfunction
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112, 113
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Air temperature sensor
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116, 117, 118
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Sensor of temperature of cooling liquid
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121, 122, 123
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Sensor of provision of a butterfly valve
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157, 158, 159
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Air stream sensor
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172, 173, 179, 181
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Oxygen sensor
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211, 212, 213
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System of ignition
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214, 244
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Sensor of position of the camshaft
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327, 332, 337
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Sensor of system of recirculation of exhaust gases
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411, 412
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Air valve of system of idling
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452
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Speed sensor
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511, 512, 513
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Central control unit
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519, 521
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Switch of system of hydrostrengthening of steering
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522
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Sensor of the automatic transmission
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536
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Switch of fires of a stoplight
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538
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Dynamic test
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539
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Conditioner sensor
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554
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Valve of adjustment of pressure
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559
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Conditioner relay
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563
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Relay (high speed) of the cooling fan
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564
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Relay (low speed) of the cooling fan
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565
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Blowing-off valve
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571
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Ventilating valve of recirculation of exhaust gases
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572
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Vacuum valve of system of recirculation of exhaust gases
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998
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Central control unit
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The OBD-II systems (models since 1996 of release)
Diagnostic socket of connection of the OBD-II system
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The socket is located under the dashboard on the party of the driver.
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Models since 1996 of release have system of self-diagnostics of the second generation OBD-II. Access to an electronic control unit of this system can be got only by means of the special scanner which needs to be connected to the 16-shtyrkovy diagnostic socket of connection located under the dashboard. At failure detection the electronic control unit includes an alarm bulb on an instrument guard and keeps a malfunction code in memory.
Reading of codes of malfunction of the OBD-II system
For reading of codes of malfunction of the OBD-II system use the special scanner which needs to be connected to the diagnostic socket of connection. If there is no scanner, it is necessary to address experts.
Cleaning of codes of malfunction of the OBD-II system
For cleaning of codes of malfunction of the OBD-II system it is necessary to use the special scanner.
Codes of malfunction of the OBD-II system
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MALFUNCTION CODE
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FAULTY ELEMENT OR SYSTEM
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P0100, P0102, P0103
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Air stream sensor
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P0110, P0112, P0113
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Air temperature sensor
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P0115, P0117, P0118
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Sensor of temperature of cooling liquid
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P0120, P0122, P0123
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Sensor of provision of a butterfly valve
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P0125
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Transition to the closed operating mode requires too much time
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P0130, P0131, P0150
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Oxygen sensor
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P0133, P0134, P0140
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Slow reaction of the oxygen sensor
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P0154, P0160
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Slow reaction of the oxygen sensor
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P0135, P0141, P0155
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Heating element of the oxygen sensor
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P0170, P0171
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Poor fuel mix
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P0172, P0173
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The oversaturated fuel mix
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P0230, P0231, P0232
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Fuel pump
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P0300
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Casual admission of ignition
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P0301
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The admission of ignition in the N1 cylinder
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P0302
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The admission of ignition in the N2 cylinder
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P0303
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The admission of ignition in the N3 cylinder
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P0304
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The admission of ignition in the N4 cylinder
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P0305
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The admission of ignition in the N5 cylinder
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P0306
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The admission of ignition in the N6 cylinder
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P0320
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System of ignition
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P0335
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Sensor of provision of a bent shaft
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P0340
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Sensor of position of the camshaft
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P0400
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The system of recirculation of exhaust gases is littered
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P0420, P0430
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Catalytic converter
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P0440
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System of collecting vapors of fuel
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P0443
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Blowing-off valve
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P0500, P0503
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Speed sensor
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P0505
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Air valve of system of idling
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P0510
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Switch of system of idling
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P0552, P0553
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Switch of system of hydrostrengthening of steering
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P0603
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RAM error
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P0605
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ROM error
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P0703
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Switch of fires of a stoplight
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P0704
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The switch on a coupling pedal
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P0705
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Transmission sensor
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P0710-P0760
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Control system of the transmission
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