Diagnosis Trainer

Circuit diagram

Legend

  1. injectors
  2. purge solenoid
  3. fuel pump
  4. idle valve
  5. DIS-coils
  6. mass airflow meter
  7. throttle position sensor
  8. oxygen sensor
  9. magnetic pickup on crankshaft
  10. Hall sensor on camshaft
  11. coolant temperature sensor
  12. air temperature sensor
  13. speed sensor
  14. diagnostic connector
  15. main relay
  16. pump relay
  17. fan relay
  18. check engine light
  19. inertia switch
  20. transponder
  21. radiator fan

Location


The fuel pump is located under the back seat.

The valve to measure the fuel pressure is on the left hand side of the fuel rail, near injector 1.

The pressure regulator is located between injector 1 and 2. The fuel line is connected at the top, the vacuum hose is connected to the bottom.

Locations of fuses and relays are displayed on the cover of the relay box.

The ignition switch is accessible on the right side.

Specifications components

1. Injectors

Resistance: 16 Ω

2. Purge solenois

Resistance: 35 Ω

3. Fuel pump

Resistance: 4 Ω
Pressure when vacuum hose is connected: 280 kPa (2.8 bar)
Pressure when vacuum hose is disconnected: 380 kPa (3.8 bar)

6. Idle valve

Resistance: 8 Ω

11. Ignition coils

Primary resistance: 0,2 Ω
Secundary resistance: 4500 Ω

31. Mass air flow meter

Output voltage:

33. Throttle position sensor

Resistance: 5000 Ω
Output voltage:

37. Oxygen sensor

Lean output voltage: 0,15 V
Rich output voltage: 0,85 V

38. Magnetic pickup

Resistance: 200 Ω

42. Coolant temperature sensor

Characteristic:

43. Air temperature sensor

Characteristic:

201. Transponder

Output voltage: 1,5 v

208. Radiator fan

Resistance: 1 Ω

Fault codes

Procedure

Fault codes are read out with the OBD tester.

The fault codes can be erased with this tester as well.

Codes

  1. Engine is running rich: oxygen sensor time-out
  2. Engine is running lean: oxygen sensor time-out
  3. Mass airflow out of range
  4. Throttle position out of range
  5. No Hall sensor signal
  6. Air temperature out of range
  7. Coolant temperature out of range
  8. Oxygen sensor out of range
  9. No signal magnetic pickup
  10. Fault in injector circuit
  11. Fault in purge solenoid circuit
  12. Fault in idle valve circuit
  13. Fault in ignition coil circuit
  14. Fault in main relay circuit
  15. Fault in pump relay circuit
  16. Fault in fan-relay circuit