Capacity of Texas, Inc.
48
108
{3}
Barometric Pressure Sensor
Circuit - Shorted High. High
signal voltage detected at the
Barometric Pressure Sensor
Circuit.
Engine power derate.
108
{4}
Barometric Pressure Sensor
Circuit - Shorted Low. Low
signal voltage detected at the
Barometric Pressure Sensor
Circuit.
Engine power derate.
1080
{3}
Sensor Supply Voltage
Number 2 Circuit - Shorted
High. High voltage detected at
Sensor Supply Voltage
Number 2 Circuit.
Engine power derate. No
engine protection for Intake
Manifold Air Temperature.
190
{0}
Engine Speed High - Critical.
Engine Speed Signal indicates
engine speed has exceeded the
engine protection limit.
Fuel injection disabled until
engine speed fails be- low the
engine protection limit.
111
{1}
Engine Coolant Level Low -
Critical. Engine coolant sensor
signal indicates that the
coolant level is below the
engine protection limit.
None on performance.
84
{2}
Vehicle Speed Sensor Circuit -
Data Incorrect. The ECM lost
the vehicle speed signal.
Engine speed limited to
"Maximum Engine Speed
without VSS". Cruise control,
gear-down protection and the
road speed governor could
possibly not work.
84
{01}
Vehicle Speed Sensor Circuit -
Tampering has Been Detected.
Invalid or inappropriate
vehicle speed signal detected.
Signal indicates an intermit-
tent connection or VSS
tampering.
Engine speed limited to
"Maximum Engine Speed
without VSS". Cruise control,
gear-down protection and the
road speed governor could
possibly not work.
647
{4}
Fan Control Circuit - Shorted
Low. Low signal volt- age
detected at the Fan Control
Circuit.
The fan can be on
continuously or not run at all.
Table 4-2 CM850 System Fault Codes (Cont.)
Fault
Code Reason Effect
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