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Symptoms - Pointer at 7:00 and LED flashes, gauge is inaccurate in normal opera-
tion; false warning message appears.
Probable Cause - Sensor or sender unit failure; open or shorted wire from sensor to
Interface Module.
Procedure:
If you have arrived at this section, the gauge in question has passed its initialization.
Find the gauge in question in Table 5-3 and follow the instructions.
Gauge
Air and Fuel Pressure Gauges - Air
Tank 1, Air Tank 2, Brake Saver, Air
Starter, Load Air, Pusher Suspension,
Brake Application, Tag Suspension,
Trailer Brake, Fuel Pressure
Temperature Gauges - Axle, Transmis-
sion, Brake Saver Oil
Public Bus Gauges - SMC, Tachometer,
Engine Oil Pressure, Engine Coolant
Temperature, Engine Oil Temperature,
Engine Load %, Manifold Boost Pres-
sure
Vacuum Gauges - Air and Fuel Filter
Restriction
Voltmeter
Ammeter
Fuel Level
Pyrometer
Probable Cause
Action
Pressure source or
Go to Section 5.3.2.1
Interface Module.
on page 5-7.
Sensor or sensor wir-
Go to Section 5.3.2.2
ing.
on page 5-9.
Engine ECU sending
Go to Section 5.3.2.3
incorrect data.
on page 5-11.
Vacuum source or
Go to Section 5.3.2.4
Interface Module.
on page 5-11.
Gauge or Interface
Go to Section 5.3.2.5
Module.
on page 5-13.
Sense wire or wiring.
Go to Section 5.3.2.6
on page 5-14.
Sender unit or wiring. Go to Section 5.3.2.7
on page 5-16.
Thermocouple or wir-
Go to Section 5.3.2.8.
ing.
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