Dacia Solenza 2004, Repair Manual

Page: 153 / 891

IGNITION AND INJECTION
17
17 - 59
DF 345
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
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