Dacia Solenza (engine E7J). Service manual — part 38
IGNITION AND INJECTION
17
17 - 58
DF 271
ACTUATORS RELAY EXIT VOLTAGE
PRESENT
1. DEF Open circuit or short-circuit
OR
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
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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
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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
25
50
80
110
120
Air temperature sensor
50000
9500
2051
810
309
135
105
Resistance (ohms)
± 14 %
± 10 %
± 6 % ± 6 %
± 6 %
± 6 %
± 7 %
Water temperature sensor
75780
12460
2252
811
282
115
88
Resistance (ohms)
± 9 %
± 9 %
± 5 % ± 5 %
± 3 %
± 2 %
± 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
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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
1
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)
2
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
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