Documentation Engine Management System EDT

# Diagnosis Trainer

## Circuit diagram

### Legend

1. injectors
2. purge solenoid
3. fuel pump
4. idle valve
5. DIS-coils
6. mass airf low 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

Resistance primary: 0,2 Ω
Resistance secundary: 4500 Ω

### 31. Mass air flow meter

Output voltage:

### 33. Throttle position sensor

Resistance: 5000 Ω
Output voltage:

### 37. Oxygen sensor

Output voltage lean: 0,15 V
Output voltage rich: 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 air flow 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