Dacia Solenza (engine E7J). Manual - part 25

IGNITION AND  INJECTION

17

17 - 6

7. 

UCE injection;

8.  Choke sensor;

1. 

RPM sensor

;

2. 

Water temperature sensor

;

Injection system

8

7

2

1

4

5

6

3

3. 

Atmospheric pressure sensor

;

4. 

Step-by-step   engin e for idli ng

adjustment

;

5. 

Valve position potentiometer

;

6. 

Air temperature sensor;

;

13. 

Ignition coil

;

13

IGNITION AND  INJECTION

17

17 - 7

Injection system

In the fuse box located in the engine compartment, the following relays may be identified:

A. Compressor relay
B. Engine cooling fan relay, step I
C. Engine cooling fan relay, step II
D. UCE injection relay, canister-purging valve
E. Fog projectors relay
H. Fuel pump and ignition coil relay

14. 

Carbon canister with purging valve

included

;

16. 

Power steering pressure controller

;

12. 

Oxygen sensor

;

15. 

Air conditioning pressure controller

.

1

15

12

16

14

IGNITION AND  INJECTION

17

17 - 8

Injection system

WATER TEMPERATURE SENSOR

 The water temperature sensor (1) is sending to UCE injection the information regarding water tempera-

ture, and another information is sent to the indicator from the instrument panel, which will show the water
temperature.

In case of an alert regarding the water temperature, UCE injection will control the lightening of

the water temperature indicator from the instrument panel.

Subject to water temperature, UCE injection will control:

- injection system;
- relays for controlling the engine cooling fan.

When setting the contact on, the water temperature indicator located on the instrument panel,

will be  lighted for  3 seconds, then it will turn off.

1

1

If after the contact is set off, in the next 2 minutes from engine stopping, the water temperature

is reaching 102 °C, and then the injection computer is controlling the starting of the engine
cooling fan at low speed.

When the temperature is lowering at 95°C, the engine cooling  fan stopping  will be  controlled;

its operation must  not exceed 10 minutes after engine stopping.

IGNITION AND  INJECTION

17

17 - 9

ANTI-STARTING INDICATOR

When setting the contact on, UCE injection is receiving from UCE DECODER a code, which is compared

with the one previously memorized; if the two codes are matching, then the engine starting is authorized.

After contact setting on, anti-starting indicator which was previously blinking, will light for

three seconds then it will go off, confirming in this way, the key recognizing.

If the key is not good, after setting on the contact, the anti-starting indicator will start blinking

faster and the engine starting will be impossible.

OBSERVATION:

For details regarding the vehicle anti-starting system, see chapter 82 “Anti-starting system”.

ATTENTION!
UCE injection connecting or disconnecting to the vehicle’s wiring is to be performed

Injection system

only when the engine is stopped and the contact off.

If the contact is on or the engine is running, do not loosen or disconnect the battery

terminals. It is forbidden the battery replacement on the vehicle if the engine is running
or the contact on.

Loosen or rusty contacts at battery terminals and imperfect connections at the

injection system wiring are not allowed.

It is forbidden the engine starting with the battery connected to a charging / starting

unit.

The battery recharging is to be performed only after disconnecting it from the vehicle

wiring and by means of a charging unit with 12 V voltage.