Ford Sierra

1982-1993 of release

Repair and operation of the car


Ford Siyerra
+ 1.2. Identification of the car
+ 2. Maintenance
- 3. General data
   - 3.1. Cars with petrol engines
      3.1.1. Masses and transfer numbers
      3.1.2. Operational liquids
      + 3.1.3. Changes in a car design from 1984 to 1986.
      - 3.1.4. Changes in a car design from 1987 to 1989.
         3.1.4.1. OHC engine
         + 3.1.4.2. Dm3 CVH 1,8 engine
         + 3.1.4.3. DOHC engine
         - 3.1.4.4. Service and repair
            3.1.4.4.1. System of ignition
            3.1.4.4.2. System of injection
            3.1.4.4.3. Scheme of the EES IV system of the DOHC 2,0 engine of dm3
            3.1.4.4.4. Check and adjustment of the EEC IV system
            3.1.4.4.5. Elimination of malfunctions
            3.1.4.4.6. Check of elements of the EEC IV system
            3.1.4.4.7. System of gas distribution
            3.1.4.4.8. Head of the block of cylinders of the engine
            3.1.4.4.9. Dismantling of the engine
            3.1.4.4.10. Assembly of the engine
            3.1.4.4.11. Lubrication system
         + 3.1.4.5. Coupling
         3.1.4.6. Mechanical five-speed transmission of N type
         + 3.1.4.7. Mechanical MT 75 five-speed transmission
         3.1.4.8. Automatic transmission
         3.1.4.9. Forward suspension bracket
         + 3.1.4.10. Brake system
         + 3.1.4.11. Electric equipment
         3.1.4.12. General data
      + 3.1.5. Changes in a car design from 1990 to February, 1993.
   + 3.2. Cars with diesel engines
+ 4. Engines
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment


a773976c


a773976c
-


3.1.4.4.6. Check of elements of the EEC IV system

GENERAL INFORMATION

For check of elements of system it is necessary to disconnect the multicontact socket from the electronic EEC IV actuation device, and then to execute the corresponding measurements on contacts of this socket.

In case of detection of malfunctions it is necessary to check first of all electric wires and their connections, and then to check the corresponding element.

Check of elements of system

The checked element
Measurement between contacts
Ignition
Value
Remarks
Connection of the electronic EEC IV actuation device with weight
20" and weight
"40" and weight
"60" and weight
It is switched off
0 – 2,5 Ohms
 
Proofreader of octane number
"5" and "40"
"23" and "40"
"24" and "40"
It is switched off
Resistance infinitely big
Before check to disconnect the socket from the electronic actuation device
Entrance of the diagnostic socket
"17" and "40"
It is switched off
Resistance infinitely big
 
Exit of the diagnostic socket
"48" and "40"
It is switched off
Resistance infinitely big
 
Wire of power supply of the module
"37" and "57"
It is switched off
0 – 2,5 Ohms
 
Nozzles of N1 and 2
"37" and "58"
It is switched off
6 – 9 Ohms
 
Nozzles N 3 and 4
"37" and "59"
It is switched off
6 – 9 Ohms
 
Relay of nozzles
"37" and "22"
It is switched off
50 – 120 Ohms
 
Valve of management of idling
"37" and "21"
It is switched off
Resistance infinitely big
To disconnect the valve before check
Valve diode
"21" and "37"
It is switched off
0 – 2 Ohms
To disconnect the valve before check
Sensor of temperature of cooling liquid
"7" and "46"
It is switched off
20 – 100 kOhm
Temperature of cooling liquid is 20 °C
The sensor of temperature of the arriving air
"25" and "46"
It is switched off
15 – 40 kOhm
Temperature 20 ° – 40 °C
Sensor of provision of a butterfly valve
"47" and "46"
"47" and "26"
It is switched off
 1,2 - 2 kOhm
3,3 – 5,5 kOhm
 
Module of strengthening of ignition of TFI IV
"36" and "40"
It is switched off
2 – 5,5 kOhm
 
Connection of the module of strengthening of ignition of TFI IV with weight
"16" and "40"
It is switched off
0 – 2,5 kOhm
 
Power supply of the module of strengthening of ignition of TFI IV
"37" and "40"
It is included
10 – 14 V
 
Food of fuel nozzles of N1 and 2
"58" and "40"
It is included
10 – 14 V
 
Food of fuel nozzles N 3 and 4
"59" and "40"
It is included
10 – 14 V
 
Relay of the fuel pump
"22" and "40"
It is included
10 – 14 V
 
Food of memory of the electronic EEC IV actuation device
"1" and "20"
It is included
10 – 14 V
 
Sensor of provision of a bent shaft
"55" and "56"
It is included
200 – 450 Ohms
 
Speed sensor
"4" and "40"
It is included
0 – 12 V (changeable)
To rotate a back wheel

CHECK AND ADJUSTMENT OF IDLING

Entry conditions

The engine has to be heated-up up to the normal working temperature. For this purpose it is necessary to increase its speed to 2000 rpm and to wait for opening of the valve of the thermostat. It is not necessary to warm up the engine idling as during the long work in these conditions contents WITH in exhaust gases will differ from contents WITH under usual service conditions of the car.

The air filter has to be installed, and its replaced element should not be too polluted.

The system of ignition has to be in good technical condition.

The additional air arriving through the leaks of connections damaged vacuum the pipeline, etc. should not get to inlet system of the engine.

The final system of the engine has to be tight.

Any of consumers of the electric power should not be included (lamps of headlights, the fan engine, heating of back glass, etc.).

Check of speed

Idling speed in the engines equipped with the EEC IV system is regulated by the electronic EEC IV actuation device and the possibility of manual regulation is absent. For the N9A DOHC engine the speed of idling has to make 875±25 rpm.

Adjustment of contents WITH

PERFORMANCE ORDER
1. To connect the analyzer of exhaust gases.
2. To check contents WITH idling which for the N9A DOHC engine has to make 1,0–1,5%.
3. In case of need to adjust contents WITH idling by means of a potentiometer of adjustment of contents WITH.