Waeco MagicSpeed MS800 Instrucciones De Montaje Y De Uso página 83

_MS-800.book Seite 83 Donnerstag, 1. Juni 2006 8:22 08
MagicSpeed MS800
The LED does not flash when a travel speed signal is received (blue
wire)
This is how to check whether the speed regulator is receiving an incorrect
travel speed signal:
➤ Check the travel speed signal using a voltmeter or an oscilloscope.
➤ Make sure the signal is between 1.5 V and 24 V and the frequency range
is between 6 Hz and 8.5 kHz.
➤ Check that the blue wire is not damaged and is properly connected to the
engine speed signal.
➤ Test the travel speed signal on the electronic module of the speed
regulator:
– Connect the red lead of the voltmeter or oscilloscope to the blue wire
in the connecting plug of the electronic module.
– Connect the second lead of the voltmeter or oscilloscope to earth.
➤ Make sure the signal at the electronic module matches that of the car.
If the travel speed signal on the electronic module matches that of the car,
the fault may be due to an incorrect PPM setting. If you chose to record the
travel speed or engine speed signal using the yellow wire, the speed
controller does not operate using the travel speed signal (blue wire).
➤ Change the PPM setting to the input signal via the blue wire.
The interface module does not change the engine speed in diagnosis
mode B
➤ Carry out all the other diagnosis mode tests again to make sure that the
problem is not caused by the wiring or by the control element.
➤ Switch the ignition off.
➤ Quit diagnosis mode.
➤ Leave the ignition switched off for several seconds.
➤ Press the SET button again and hold it down.
➤ Start the car again to start diagnosis mode.
➤ Repeat diagnosis mode B again.
➤ Make sure the starter is not working.
Troubleshooting
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