62 99 001 - Simulator for instrument cluster testing < 62 - Instruments < BMW 728 - 745i
 
From model '83
SIMULATOR FOR CHECKING INSTRUMENT CLUSTERS
1 ON/OFF switch
2 Power supply control lamp
3 Selector switch
4 Distance pulse control lamp
5 Tachometer changeover switch
6 Starting simulation button
7 Display range running off knob
8 Oil service Reset button
9 Inspection reset button
10 SI running off and adjusting button

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1. Checking Complete Instrument Cluster
1.1 Connecting Simulator
1.1.1 ´3´Series Cars

Plug connection plate (1) of ´3´series wire
harness on instrument cluster and secure with
clamps (2).

Caution!
Be careful not to bend the spring contacts when
mounting the connection plate.

Connect blue and white plugs of wire harness
on the instrument cluster.

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Connect lead (1) and power supply lead (2) on
simulator.

Connect red terminal (3) on B + and black
terminal (4) on B - of a 12 V battery.
Turn on simulator with switch (1).

The red control lamp will not come on with
battery voltage of < 11.5 V; simulator is not
ready for use.

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1.1.2 ´5´, ´6´and ´7´Series Cars

Plug connection plate (1) of ´5´, ´6´and ´7´
series wire harness on instrument cluster and
secure with clamps (2).

Caution!
Be careful not to bend spring contacts when
mounting the connection plate.

Connect blue and white plugs of wire
harness on instrument cluster.

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Connect lead (1) and power supply lead (2)
on the simulator.

Connect red terminal (3) on B + and black
terminal (4) on B - of a 12 V battery.
Turn so simulator with switch (1).

The red control lamp will not come on with
a battery voltage < 11.5 V; the simulator
is not ready for use.

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1.2 Checking

1.2.1 Speedometer
Set selector switch (3) to km/h or mph, and
turn knob (7) against left stop; speedometer
needle points to 0.

Turn knob (7) clockwise slowly; speedometer
needle passes through the display range.

Note:
The simulator is designed for speedometers
with a display range of 280 km/h. If the display
range of a speedometer is smaller, it could
happen that after reaching the final display
value and increasing the frequency with knob
(7) the needle would fall back to an undefined
display value. When increasing the frequency
again, the needle would start from this display
value and pass through the display range.

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The set frequency can be measured on the
yellow jack with a BMW service test unit
(multimeter 14) - see operating instructions
of BMW service test unit.

Yellow connection terminal
FREQ in +
in yellow jack;
Black connection terminal
FREQ in -
on B - of battery

See Specifications for test values.

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Green LED (4) indicates the 100 mtr. pulse,
which is required for SI and EC.
This LED must come on and go out in 100
meter cycles (not at final display value).

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1.2.2 Tachometer
Selector switch (3) set to 1/rpm.
Turn knob (7) against left stop; needle of
tachometer points to 0.

Set switch (5) to cored position!

Tachometer for:

6 cylinder engines------------------------------> 6 zyl
4 cylinder engines------------------------------> 4 zyl
diesel engine -------------------------------> Diesel

Turn knob (7) clockwise slowly; needle of
tachometer passes through display range.
Note:
The simulator is designed for tachometers
with a display range of 8000 rpm. When the
tachometer has a 5000 rpm display range it
could happen that after reaching the display
value and increasing the frequency with knob
(7) the needle will fall back to an undefined
display value. When increasing the frequency
even more, the needle starts from this display
value and passes through the display range
again.

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The set frequency can be measured on the
yellow jack with a BMW service test unit
(multimeter 14) - see operating instructions
of BMW service test unit.

Yellow connection terminal
FREQ in +
in yellow jack;
black connection terminal
FREQ in -
on B - of battery.

See Specifications for test values.

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1.2.3 Economy Control (EC)

Selector switch (3) set to L/100 km or MPG.
Turn knob (7) against left stop; EC needle
points to 0 (for L/100 km) or Ohm (for MPG).

Turn knob (7) clockwise slowly; EC needle
passes through display range up to approx.
Ohm (for L/100 km) or up to approx. 0 (for MPG).

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1.2.4 Temperature Gauge

Selector switch (3) set to temperature.
Turn knob (7) against left stop; needle of
temperature gauge in blue range.

Turn knob (7) clockwise slowly; needle of
temperature gauge passes through display
range.

Note:
Needle deflection takes place only in last
third of turning range for knob (7).

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1.2.5 Fuel Gauge

Selector switch (3) set to tank.
Turn knob (7) against left stop; needle of
fuel gauge points to R.

Turn knob (7) clockwise slowly; needle of
fuel gauge passes through display range.

Note:
Needle deflection takes place only in last
third of turning range for knob (7).

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1.2.6 Service Indicator (SI)

Engine starting can be simulated with button
(6).

Press button (6) at least 2 seconds and release
again.
Green LEDs of SI go out.

LEDs will come on again by switching the
simulator off and on with switch (1).

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SI can be reset with buttons (8 and 9).

Button 8: Reset for OIL SERVICE
Button 9: Reset for INSPECTION

Pertinent interval is reset by pressing the
button briefly.

The duration of resetting is indicated by a
lamp in pertinent button.

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The SI can be adjusted with button (10).

The SI runs off at intervals of about 10
seconds by pressing button (10).

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This diagram shows the run-off of SI.
Note:
The BMW 524 td has two OIL SERVICES
between each inspection.

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2 Checking Instruments Separately

2.1 Connecting Simulator

2.1.1 ´3´Series Cars

Connect plug (1) and ´3´series wire harness on
adapter for instruments.

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Connect lead (1) and power supply lead (2) on
simulator.
Connect red terminal (3) on B + and black
terminal (4) on B - of a 12 V battery.

Turn on simulator with switch (1).

The red control lamp will not come on with a
battery voltage of < 11.5 V; the simulator is
not ready for use.

3062035 - click to zoom
 
2.1.2 ´5´, ´6´and ´7´Series Cars

Connect plug (1) of ´5´, ´6´and ´7´series wire
harness on adapter for instruments.

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Connect lead (1) and power supply lead (2)
on simulator.
Connect red terminal (3) on B + and black
terminal (4) on B - of a 12 V battery.

Turn on simulator with switch (1).

The red control lamp will not come on with
a battery voltage of < 11.5 V; the simulator
is not ready for use.

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2.2 Checking

Disassemble instrument carrier - see Group 62
of repair manual.

2.2.1 Speedometer

Connect speedometer on adapter (1).
Check as describe in 1.2.1.
´3´Series Cars

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´5, ´6´and ´7´Series Cars

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2.2.2 Tachometer and EC

Connect tachometer, with or without EC, or
clock with EC on adapter (1).
Check as describe in 1.2.2 or 1.2.3.
Note:
Connect coding plug.
´3´Series Cars

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´5´, ´6´and ´7´Series Cars

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2.2.3 LEDs and Light Bulbs for SI Signs

´3´Series Cars:
Connect printed circuit board.
All LEDs must come on.

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´5´, ´6´and ´7´Series Cars:
Connect plug of printed circuit board.
All LEDs must light up.

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