Examples Of Applications - Beta 1760/RSE Notice D'utilisation Et Instructions

OPERATION MANUAL AND INSTRUCTIONS ISTRUZIONI PER L'USO
USE
The signal detector allows the various electromechanical/electronic parts to be checked directly on the motor vehicle, without
having to disconnect any connector. Take the following steps:
1. Connect the power supply cables of the signal detector to the motor vehicle battery, paying special attention to polarity.
2. Start the engine.
3. Bring probe A near connector B of the part to test (see figure).
4. If the part works correctly, lamp C will turn on intermittently and a beep will be emitted, its intensity and frequency varying
according to the technical characteristics of the signal sent to the part.

EXAMPLES OF APPLICATIONS:

Piezoelectric
common rail injector
by Siemens
USER INFORMATION, TIPS AND DETECTABLE DEFECTS
Testing electromechanical/electronic parts with the signal detector allows the following types of defects to be found:
• Control unit not powered or not working correctly (signal not detected on all or most parts).
• False contacts of wires between control unit and part.
• Electronic circuit of part disconnected.
• Short circuit to earth or +12V in part.
Some abnormal signals might be due to trouble caused by engine parts which influence the sensitivity of the detector. In case
of difficulty in detecting the signal, the probe should be moved onto either the body of the part being tested or the wiring clutch
into the part.
In some common rail systems, the electric opening control for the injectors is not generated by the control unit until fuel
pressure has reached the set value. This might deceive the operator, who may not detect the signal, thereby attributing the
cause of failure to start the engine to an electric problem.
The signal detector cannot detect the operation of certain parts:
• Injectors with particular resistances (e.g. those with a resistance of approximately 4 Ω).
• Revolution sensors, phase sensors.
• Air mass meters.
• Pressure regulators.
• Any parts that generate low electromagnetic fields.
8
Common rail
injector by Bosch
ELECTRO-
VARIABLE-
INJECTORS
GEOMETRY
SOLENOID VALVE
B B
A
Solenoid valve
FLOW HIGH-VOLTAGE
REGULATORS COIL
B B
C
EN I
Flow regulator by
Delphi