Dometic MS880 User manual

MS880
Cruise control
Diagnostic manual. . . . . . . . . . . . . . . . . . . . .3
Geschwindigkeitsregler
Diagnose-Handbuch . . . . . . . . . . . . . . . . . . 13
Régulateurs de vitesse
Manuel de diagnostic . . . . . . . . . . . . . . . . .25
Regulador de velocidad
Manual de diagnóstico . . . . . . . . . . . . . . . .36
Regulador de velocidade
Manual de diagnóstico . . . . . . . . . . . . . . . .47
Regolatore di velocità
Manuale di diagnosi . . . . . . . . . . . . . . . . . .58
Snelheidsregelaar
Diagnosehandleiding . . . . . . . . . . . . . . . . .69
Hastighedsregulering
Diagnosehåndbog . . . . . . . . . . . . . . . . . . .80
Farthållare
Diagnos-handbok . . . . . . . . . . . . . . . . . . . .92
Hastighetsregulator
Diagnosehåndbok. . . . . . . . . . . . . . . . . . .102
Vakionopeussäätimet
Diagnoosikäsikirja. . . . . . . . . . . . . . . . . . . 112
Регулятор скорости движения
Инструкция по диагностике . . . . . . . . . . 122
Regulator prędkości
Podręcznik diagnozy . . . . . . . . . . . . . . . . 134
Temp omat
Diagnostická príručka. . . . . . . . . . . . . . . . 145
Regulátor rychlosti
Diagnostická příručka. . . . . . . . . . . . . . . . 155
Sebességszabályozó
Diagnosztikai kézikönyv . . . . . . . . . . . . . . 166
EN
DE
FR
ES
PT
IT
NL
DA
SV
NO
FI
RU
PL
SK
CS
HU
DRIVING SUPPORT
CRUISE CONTROL
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MS880 Troubleshooting
3
Contents
1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2 Recording travel speed signals/engine speed signals . . . . . . . . . . . . . . . . . .7
2.1 Recording travel speed signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2 Recording engine speed signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.3 Testing the signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3 Setting the sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.1 Starting setup mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.2 Starting automatic mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.3 Setting the sensitivity (INIT mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.4 Setting the control sensitivity manually (GAIN mode). . . . . . . . . . . . . . . . . . 11
3.5 Quitting setup mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
1 Troubleshooting
This section contains a list of possible problems and recommended tests you can
perform to find a solution.
The LED on the electronic module does not light up when you press the
buttons on the control element
➤Check that the 8-pin compact plug of the electronic module is properly
connected to the control element.
➤Check the colour code on the connecting plug of the control element and make
sure that the terminals are correctly plugged into the control element.
➤If the plugs are correctly inserted, check the power supply and earth connection
of the electronic module.
There should be a voltage of +12 V on the orange cable when the ignition is
switched on.
The green cable should have a good earth connection.
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Troubleshooting MS880
4
The LED on the electronic module does not light up when you apply the
brake
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➤Make sure the LED on the electronic module lights up when you press the
buttons on the control element.
➤If the LED does not light up, check the powersupply and earth connection ofthe
electronic module.
There should be a voltage of +12 V on the orange cable when the ignition is
switched on.
The green cable should have a good earth connection.
➤Check the connection of the brown and brown/white cable to the brake light
switch using a voltmeter.
Test the cables with the ignition switched on, because some brake light circuits
are powered via the ignition.
The brown/white cable of the electronic module should be connected to a
brake light switch cable which is connected to either the permanent positive
terminal (terminal 30) or to the ignition (terminal 15).
The brown cable should be connected to the brake light switch cable, which
connects the brake light lamp and the brake light switch. This gives an earth
signal from the brake light lamp supply cable when the brake pedal is not
applied, and a positive signal (+12 V) when the brake pedal is applied.
The LED does not flash when an engine speed signal is received (yellow
cable)
This is how to check whether the cruise control is receiving an incorrect engine
speed signal:
➤Check the engine speed signal using a voltmeter or an oscilloscope.
➤Make sure the signal is between 6 V and 250 V and the frequency range is
between 6 Hz and 488 Hz.
➤Check that the yellow cable is not damaged and is properly connected to the
engine speed signal.
NOTE
For reasons of safety, the cruise control does not work when there are
problems with the original brake light circuit.
Therefore, check that the brake lights are working properly.
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MS880 Troubleshooting
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➤Test the engine speed signal on the electronic module of the cruise control:
– Connect the red cable of the voltmeter or oscilloscope to the yellow cable in
the connecting plug of the electronic module.
– Connect the second cable of the voltmeter or oscilloscope to earth.
➤Make sure the signal at the electronic module matches that of the vehicle.
If the engine speed signal on the electronic module matches that of the vehicle, the
fault may be due to an incorrect PPM setting. If you chose to record the travel speed
or engine speed signal using the blue cable, the speed controller does not operate
using the engine speed signal (yellow cable).
➤To change the PPM setting, see chapter “Starting automatic mode” on page 9
The LED does not flash when a travel speed signal is received (blue cable)
This is how to check whether the cruise control is receiving an incorrect engine
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
between6Hzand8.5kHz.
➤Check that the blue cable is not damaged and is properly connected to the travel
speed signal.
➤Test the travel speed signal on the electronic module of the cruise control:
– Connect the red cable of the voltmeter or oscilloscope to the blue cable in
the connecting plug of the electronic module.
– Connect the second cable of the voltmeter or oscilloscope to earth.
➤Make sure the signal at the electronic module matches that of the vehicle.
If the travel speed signal on the electronic module matches that of the vehicle, 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 cable, the cruise control does not operate
via the travel speed signal (blue cable).
➤To change the PPM setting, see chapter “Starting automatic mode” on page 9
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Troubleshooting MS880
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The electronic module does not change the engine speed in diagnosis
mode B
➤Perform all the other diagnosis mode tests again to make sure that the problem is
not caused by the electrical connections 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 vehicle again to start diagnosis mode.
➤Repeat diagnosis mode B again.
➤Make sure the starter is not working.
➤Check the plug connection to the electronic module, make sure the cables are
correctly positioned and pay attention to the colour code of the plug.
➤Use a voltmeter to test that none of the cables in the wiring harness are damaged.
The cruise control does not work evenly in control mode
➤If the cruise control reacts too suddenly or the vehicle speeds up too much in
control mode, you must decrease the GAIN value (see chapter “Setting the con-
trol sensitivity manually (GAIN mode)” on page 11).
➤If the cruise control operates too slowly in control mode, you must increase the
GAIN value (see chapter “Setting the control sensitivity manually (GAIN mode)”
on page 11).
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MS880 Recording travel speed signals/engine speed signals
7
2 Recording travel speed
signals/engine speed signals
2.1 Recording travel speed signals
A
You can record the travel speed signal at the following positions:
NOTICE!
On vehicles with manual transmission, an engine overspeed protection
must be installed.
Position Voltage
V
Frequency
Hz
Speed signal transmitted via the engine controller 1,5 – 24 6 – 8500
Electronic speed sensor
(on the rear of the instrument assembly or as part set of
the instrument assembly)
1,5 – 24 6 – 8500
Travel speed sensor
(this is installed in the transmission and generally has
three cables)
1,5 – 24 6 – 8500
Car radio
(near the radio, if the vehicle has an ISO connection.
The travel speed signal is in chamber 3, contact pin 1 or
5)
1,5 – 24 6 – 8500
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Setting the sensitivity MS880
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2.2 Recording engine speed signals
You can record the engine speed signal at the following positions:
2.3 Testing the signal
Use a voltmeter to test the signal, proceeding as follows:
I
➤Connect the red lead of the voltmeter to the selected speed signal.
➤Connect the black lead of the voltmeter to the vehicle earth.
➤Drive the vehicle at the activation speed of the cruise control (approx. 40 km/h).
➤Measure the effective voltage of the signal.
3 Setting the sensitivity
3.1 Starting setup mode
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Position Voltage
V
Frequency
Hz
Engine speed signal transmitted via the engine
controller
1,5 – 24 6 – 8500
Electronic speed sensor
(on the rear of the instrument assembly or as part set of
the instrument assembly)
1,5 – 24 6 – 488
Negative terminal end of the ignition coil (terminal 1)
(The yellow cable must be used for this type of
connection)
6 – 250 6 – 488
NOTE
Make sure all digital voltmeters measure the effective voltage when
operating in the AC range.
NOTE
•To begin one of the adjusting and teach modes you must always
carry out the following procedure.
•For automatic mode (page 9), you first have to start the motor.
•For any of the other modes, you first simply have to switch the
ignition off and on again.
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MS880 Setting the sensitivity
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To start setup mode, proceed as follows:
➤Depending on the mode, do one of the following:
– For automatic mode: start the motor.
– For the other modes: switch the ignition off and on again.
➤Press the ON/OFF button on the control element.
➤Apply the brake within one minute and hold it down.
➤Press the setup button four times in rapid succession.
➤Release the brake.
✓You will hear four acoustic signals.
✓You are now in setup mode and can set the cruise control.
3.2 Starting automatic mode
In automatic mode, the PPM and GAIN parameters are automatically synchronised
with your vehicle. You can still fine-tune both parameters anytime.
➤Start setup mode (chapter “Starting setup mode” on page 8).
➤Apply the brake and hold it down.
➤Press the RES button twice.
✓You will hear two low-pitched signals.
➤Release the brake.
✓You will hear two high-pitched signals.
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➤Drive the vehicle at a speed of 70 km/h to allow the PPM and GAIN parameters
to be set automatically.
➤Press the SET button.
✓The cruise control switches itself on.
NOTE
If you hear more than two signals, repeat the procedure.
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Setting the sensitivity MS880
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If the cruise control does not take on the speed gently or the save value is not
applied:
➤Press the SET button again to increase the value or
➤... press the RES button to decrease the value.
✓You will hear a signal each time you press the button.
The current value is indicated by the number of beeps (3 – 14 beeps). The factory
setting is 5 beeps.
➤Apply the brake to save the set values (PPM and GAIN).
✓Normally, your cruise control should be ideally preset for your vehicle.
➤Quit setup mode (chapter “Quitting setup mode” on page 12).
➤You can now use MagicSpeed MS880.
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3.3 Setting the sensitivity (INIT mode)
In INIT mode you can set the sensitivity of speed reaction. If the speed regulator
reacts to the speed too slowly you must increase the INIT value. If it reacts too
suddenly to the speed, you must decrease the INIT value.
➤Start setup mode (chapter “Starting setup mode” on page 8).
➤To set the sensitivity, apply the brake and hold it down.
➤With the brake applied, press the RES button three times.
✓You will hear a low-pitched signal each time you press the button.
➤Release the brake.
✓You will hear three high-pitched signals.
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➤With the speed controller activated, drive at any speed above the activation
speed (40 km/h).
NOTE
If, during operation, you notice that the vehicle reacts too slowly or too
suddenly, or the speed is not being regulated correctly, you must set the
control sensitivity manually (see chapter “Setting the control sensitivity
manually (GAIN mode)” on page 11).
NOTE
If you do not hear three signals, repeat the procedure.
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