Trailer Jockey Operators Handbook
59
103
{10}
Turbocharger Speed - Invalid
Rate of Change Detected.
Engine power derate.
2789
{15}
Turbocharger Turbine Inlet
Temperature (calculated) -
Data Valid but Above Normal
Range - Least Severe Level.
Engine power derate.
2629
{15}
Turbocharger Compressor
Outlet Temperature
(calculated) - Data Valid but
Above Normal Range - Least
Severe Level.
Engine power derate.
027
{13}
EGR Valve Position Failed
Automatic Calibration
Procedure.
Possible low power. Power
removed from the EGR valve
motor.
2791
{3}
EGR Valve Control Circuit -
Shorted High or Open. High
voltage or open circuit
detected at the EGR Valve
Motor Circuit.
Power removed from the EGR
valve motor.
2791
{4}
EGR Valve Control Circuit -
Shorted Low. Low volt- age
detected at the EGR Valve
Motor Circuit.
Power removed from the EGR
valve motor.
2791
{3}
EGR Valve Control Circuit -
Shorted High. High voltage
detected at the EGR Valve
Motor Circuit.
Possible low power. EGR
motor will be powered down.
2791
{6}
EGR Valve Control Circuit -
Excessive Current Detected.
Excessive current detected at
the EGR Valve Motor Circuit.
Possible low power. EGR
motor will be powered down.
2791
{7}
EGR Valve Control -
Mechanical System not
Responding Properly or Out of
Adjustment. EGR valve not
responding or slow to respond.
Possible low power. EGR
motor will be powered down.
411
{16}
EGR Differential Pressure
Sensor - Data Valid but Above
Normal Operating Range
Moderately – Severe Level.
EGR differential pressure
sensor failed and automatic
calibration procedure.
EGR valve will be closed.
Table 4-2 CM850 System Fault Codes (Cont.)
Fault
Code Reason Effect
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