Frelander 2. Manual — part 442
Instrument Cluster - Instrument Cluster
Description and Operation
COMPONENT LOCATION - UK
Item
Part Number
Description
1
-
Tachometer
2
-
Engine temperature gage
3
-
Fuel level gage
4
-
Speedometer
5
-
Message center - high line instrument cluster only
6
-
W arning indicator lamp display - low line instrument cluster only
• NOTE: The 'Rest of World' instrument cluster is the same as the UK instrument cluster but does not have a miles per
hour (mph) scale on the speedometer.
COMPONENT LOCATION - NORTH AMERICA
Item
Part Number
Description
1
-
Tachometer
2
-
Engine temperature gage
3
-
Fuel level gage
4
-
Speedometer
5
-
Message center - high line instrument cluster only
6
-
W arning indicator lamp display - low line instrument cluster only
OVERVIEW
The instrument cluster is located in the instrument panel, above the steering column. The instrument cluster comprises
analogue gages and a number of warning indicator lamps to display system status. High line instrument clusters also
feature a Liquid Crystal Display (LCD) message center to provide vehicle operation details to the driver. The message
center is located in a central position in the high line instrument cluster.
For additional information, refer to:
Information and Message Center
(413-08 Information and Message Center, Description
and Operation).
Low line instrument clusters feature warning indicator lamps in place of the message center.
ANALOGUE GAGES
Tachometer
The tachometer is located on the Left Hand (LH) side of the instrument cluster and displays engine speeds of up to 8000
Revolutions Per Minute (RPM) on petrol variants, and 6000 RPM on diesel variants. The tachometer is driven by an engine
speed signal, which originates from the Crankshaft Position (CKP) sensor. This signal is transmitted over the high speed
Controller Area Network (CAN) bus by the Engine Control Module (ECM). The Central Junction Box (CJB) acts as a gateway
and transmits the engine speed signal to the instrument cluster on the medium speed CAN bus. The signal is received by
the instrument cluster microprocessor and the output from the microprocessor drives the tachometer.
Engine Temperature Gage
The engine temperature gage is located in the center of the instrument cluster and is driven by medium speed CAN bus
messages from the CJB. The CJB receives an Engine Coolant Temperature (ECT) signal from the ECM over the high speed
CAN bus when the vehicle enters power mode 6 (ignition on). The needle pointer position translates to the following
approximate temperatures.
Engine Coolant Temperature °C (°F)
Pointer Position
Petrol
Diesel
Ignition off
Ignition off
Park
40 (104)
40 (104)
Cold (blue segment)
75 (167)
75 (167)
Beginning of normal
119 (246)
113 (235)
End of normal
125 (257)
118 (244)
Beginning of hot (red segment)
130 (266)
123 (253)
End of hot
If the ECT signal rises above 118 °C (244 °F) on diesel vehicles, or 127 °C (260 °F) on petrol vehicles, the instrument
cluster will illuminate the high ECT warning indicator. If the instrument cluster fails to receive an ECT signal from the CJB,
the engine coolant temperature gage will move to the 'end of hot' position and the warning indicator will be illuminated.
Fuel Level Gage
The fuel level gage is located in the center of the instrument cluster and displays fuel tank contents when the vehicle is in
power mode 6. When the ignition is switched off, the pointer returns to the park position.
Two Magnetic Passive Position Sensors (MAPPS) are located in the saddle type fuel tank, one on either side. The
resistance values for both sensors are measured by the CJB through a series of hardwired connections. The CJB converts
both values to medium speed CAN messages for delivery to the instrument cluster. The instrument cluster uses the 2 CAN
bus messages to calculate the total amount of fuel in both halves of the tank. The instrument cluster will also damp the
total fuel value to eliminate constant pointer movement due to fuel moving in the tank.
The following table shows the approximate fuel tank level and the respective needle pointer position.
Fuel Quantity Liters (US gallons)
Pointer Position
Petrol
Diesel
0 (0)
0 (0)
Mechanical zero
1 (0.2)
2.5 (0.6)
Below empty
2.8 (0.7)
3.8 (1)
Indicated empty
11.9 (3.1)
10.3 (2.7)
Low fuel level indicator illuminated
13.9 (3.7)
12.3 (3.2)
Low fuel level indicator extinguished
16.9 (4.5)
16.7 (4.4)
Quarter full
33.8 (8.9)
33.4 (8.8)
Half full
50.8 (13.4)
50 (13.2)
Three quarters full
66.9 (17.7)
68 (18)
Indicated full
70.5 (18.6)
70.5 (18.6)
Over full
If the instrument cluster fails to receive the fuel level signals from the CJB the fuel level gage will move to the empty
position and the low fuel level indicator will be illuminated.
Speedometer
The speedometer is located on the Right Hand (RH) side of the cluster and is available in 3 variants:
Major scale mph, minor scale kilometers per hour (kph)
Major scale kph, minor scale mph
Major scale kph only.
The speedometer is driven by medium speed CAN bus signals transmitted by the CJB. The vehicle speed signal is provided
to the CJB by the Anti-lock Brake System (ABS) module over the high speed CAN bus and is an average of all 4 wheel
speed sensor signals.
The speedometer also incorporates the odometer.
For additional information, refer to:
Information and Message Center
(413-08 Information and Message Center, Description
and Operation).
WARNING INDICATORS
Item
Part
Number
Description
1
-
Ignition/No charge indicator
2
-
Low oil pressure warning indicator
3
-
Malfunction Indicator Lamp (MIL) (petrol vehicles only)
4
-
Safety belt warning indicator
5
-
Supplemental Restraint System (SRS) warning indicator
6
-
Left Hand (LH) turn signal indicator
7
-
Brake warning indicator (low fluid/Emergency Brake Assist (EBA)/Electronic Brake force Distribution
(EBD))
8
-
High Engine Coolant Temperature (ECT) warning indicator
9
-
Headlamp high beam indicator
10
-
Tire Pressure Monitoring System (TPMS) indicator
11
-
Anti-lock Brake System (ABS) warning indicator
12
-
Low fuel indicator
13
-
Right Hand (RH) turn signal indicator
14
-
Parking brake indicator - not used
15
-
Parking brake indicator
16
-
Rear fog lamp indicator
17
-
Front fog lamp indicator
18
-
Adaptive Front lighting System (AFS) indicator
19
-
Speed control indicator
20
-
Trailer indicator
21
-
Low washer fluid indicator (low line only)
22
-
Low engine coolant level warning indicator (low line only)
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