Gauges, Troubleshooting (With Pro-Link) - Volvo VNL Service Manual

Group 38 Instrumentation, VNL, VNM
Gauges, Troubleshooting (with
Pro-Link)
CAUTION
Before starting this procedure, see "General Work
Practices" page 3 for general safety precautions when
working with the instrument cluster. Failure to follow
the safety precautions may result in instrument cluster
damage.
The following tests require the Pro-Link 9000
Low Eng Oil Prs Lamp
Hi Cool Temp Lamp
Caution Lamp/Icon
Stop Eng Lamp/Icon
Low Cool Level Warn
Hi Eng Oil Temp Warn
Eng Oil Temp Gauge
Preheat Status Icon
Speedometer
Tachometer
Cool Temp Gauge
Eng Oil Prs Gauge
Turbo Boost Gauge
Note: Gauge accuracy must be measured at room temperature (20–25
netic characteristics which may change accuracy slightly over a long period of time.
Note: The tachometer will move to the 600 RPM mark during Special Tests. In vehicles with a Volvo engine, it is nor-
mal for an audible beeping to occur during certain Special Tests. The engine must not be running during any Special
Tests, or the tests will not function.
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Pro-Link is a registered trademark of MPSI.
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and the Volvo card.
This test activates the low engine oil pressure warning lamp.
This test activates the high coolant temperature warning lamp and the display icon.
This test activates the caution diagnostic telltale lamp and the associated display
icon.
This test activates the stop engine telltale lamp and the associated display icon.
This test activates the low coolant level display warning.
This test activates the high engine oil temperature display warning.
The engine oil temperature gauge can be driven in steps of ±10

270 F. For this test to work, the gauge must be in the graphic display window.

Gauge tolerance: ± 0.5 F
This test activates the preheat display icon.
The speedometer gauge can be driven in steps of ± 5 mph, from 0–80 mph.
Gauge tolerance = +3 / –0 mph (Below 5 mph, tolerance = ± 3 mph).
The tachometer gauge can be driven in steps of ±100 RPM, from 0–2500 RPM.
Gauge tolerance = ± 50 RPM.
The coolant temp gauge can be driven in steps of ±5
Gauge tolerance:
 
Above 190 F = ± 3.5 F
 
Below 190 F = ± 9 F
The engine oil pressure gauge can be driven in steps of ±15 psi, from 0–90 psi.
Gauge tolerance = ± 3 psi.
The turbo boost pressure gauge can be driven in steps of ±5 psi, from 0–30 psi.
Gauge tolerance = ± 3 psi.
Special Tests

 
C (68-77 F)). The analog gauges have mag-
Troubleshooting

F, from 50 to

F, from 150 to 230 F.
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