Content .. 36 37 38 39 ..

Dacia Solenza (engine E7J). Manual - part 38

IGNITION AND INJECTION

17 - 58

DF 271

ACTUATORS RELAY EXIT VOLTAGE

PRESENT

1. DEF Open circuit or short-circuit

MEMORIZED

Conditions for diagnostic application at memorized failure:
Set the contact off and wait until the communication with the computer
is lost.

RECOMMENDATIONS

REMARK: If failure “DF009 : Actuators relay control circuit” is
present or memorized, it must be treated as most important, because

this could be the cause of the failure occurring.

Check the condition of the battery and of the vehicles electric masses.
Mend if necessary.

Check the connection and condition of the actuators relay connector.
Replace the connector if necessary.

Check with the contact set on, the presence of the +12 V supply at pole 3 of the actuators relay .
Fix the electric routing on the line towards the corresponding fuse.

Check with the contact set on, the presence of +12 V supply at pole 5 of the actuators relay.
Replace the relay if necessary

Check the insulation and continuity on the line:

Pin 66 injection computer > p

ole 5 actuators relay

Mend if necessary.

Disconnect one by one the elements (injector, canister purging valve…) and observe the +12 V
supply at the exit pole 5 of the actuator

s relay, in order to identify the damaged one

Replace the damaged el

ement.

Perform the operations from ” recommendations” for reparation confirmation.

AFTER

Fix any other possible failures

REPARATION Erase the failures memorized by the injection computer.

Perform a conformity checking by means of the CLIP tester.

Diagnostic – Failures interpretation

IGNITION AND INJECTION

17 - 59

DF 345

SUPPLY + 5 VOLTS POTENTIOMETERS AND SENSORS

PRESENT

1. DEF Open circuit or short-circuit

RECOMMENDATIONS Check with the contact set on, the parameter “PR004: computer

supplying voltage” ( measured voltage at battery: about 12 volts).
- if at limit the value is of 16 volts, it means there is a short-circuit at
mass.
- if at limit the value is of 10.7 volts, it means there is short-circuit at

+12 volts of one one of th

e supply ways +5 volts

Check the connection and condition of the connectors of the valve potentiometer, manifold pressure
sensor and refrigerant fluid pressure transducer 9if there is on the vehicle).
Replace the connector/connectors if necessary.

Disconnect one by one, the following transducers, if they are passing from state present to
memorized: valve potentiometer, manifold pressure transducer and refrigerant fluid pressure
transducer (if there is on vehicle).
Treat the failure from the transducer, if necessary.

Check the insulation ,continuity and the absence of the parasite resistance on lines:

Pin 74 injection computer

> pin B valve potentiometer

Pin 78 injection computer > pi

n C manifold pressure transducer

Pin 83 injection computer >

pin B refrigerant fluid pressure transducer (if there is).

Mend if necessary.

If the problem is persisting after these checking, treat the others failures then perform the conformity
checking.
Perform the operations from “recommendations” for reparation confirmation

AFTER

Fix any other possible failures

REPARATION Erase the failures memorized by the injection computer.

Perform a conformity checking by means of the CLIP tester.

Diagnostic – Failures interpretation

IGNITION AND INJECTION

17 - 60

Valve potentiometer resistance

Track

= 1200

Ω ± 20 %

Slider

= < 1050

Ω

Idling regulator resistance

at 25°C

= 53

Ω ± 10%

Ignition coil resistance

Primary

= 0.5

Ω ± 5 %

Secondary

= 7200

Ω ± 10 %

Injector’s resistance

at – 40°C

= 11.1

Ω

at 20C

= 14.5

Ω ± 5%

at 120°C

=20.6

Ω

Sensor atmospheric pressure resistance

=50 k

Ω

Upstream oxygen sensor heating resistance
For engines E7J-260-MA and E7J-262 MB

at 23°C

= 6 ± 1

Ω

Downstream oxygen sensor heating resistance for engines
E7J-260-MB, E7J-262-MB or upstream
for engine E7J-262-MB

at 23°C

= 3.3

+0.7

Ω

RPM sensor resistance

at 23°C

= 200 - 270

Ω

Canister purging valve resistance

at 23°C

= 26

Ω ± 7 %

Temperature ( °C )

-40

-10

110

120

Air temperature sensor

50000

9500

2051

810

309

135

105

Resistance (ohms)

± 14 %

± 10 %

± 6 % ± 6 %

± 6 %

± 7 %

Water temperature sensor

75780

12460

2252

811

282

115

Resistance (ohms)

± 9 %

± 5 % ± 5 %

± 3 %

± 2 %

Ignition system checking:

Check the condition, insulation and continuity of the high voltage cables.
Replace them if necessary.
Check the condition and correct tightening of the ignition spark plugs and if the spark plugs are corresponding
with the recommended ones.
Replace them if necessary.
Check the condition of the ignition coil connectors.
Replace if necessary.
Check the condition and the primary and secondary resistance values of the ignition coil.
Replace if necessary
Check the coils supply:
Presence of the +12 volts supply (contact set on).
Check the electric routing between the coil and the actuators relay.
Mend if necessary.

Diagnostic – Help

-0.3

IGNITION AND INJECTION

17 - 61

RECOMMENDATIONS The values shown on this conformity checking are only as indication.

Performing conditions: Stopped engine, contact set on.

Sequence

Function

Parameter / Controlled state or action

Visualization

Diagnostic

and Observations

Voltage

ET001 : after contact computer

In case of a

PR004 : computer supplying voltage

ACTIVE

problem

consult

the PR004

diagnostic

LC012 : O2 sensor option reading

With one wire

or three wires

LC017 : Engine fan driving with running engine With (if the option

is existing)

LC019 : upstream oxygen sensor

With

LC020 : downstream oxygen sensor

With (if the option

is existing)

Computer

LC036 : low flow fuel pump configuration

With (if the option Nothing to

is existing)

be noticed

LC042 : AC cold loop at injection

With (if the option

is existing)

LC048 : climate control configuration reading With (if the option

is existing)

LC054 : Gearbox type

Mechanical

gearbox

LC096 : Compressor with fix cy

linder capacity With (if the option

is existing)

Diagnostic – Conformity checking

Content .. 36 37 38 39 ..