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TM 9-2320-312-24-2
Troubleshooting Section
Service Tool Display or Lamps Caterpillar
3. If the problem is resolved with the new sensor,
Electronic Technician (ET) will indicate 100 kPa
replace the sensor.
(15 psi) and display "DIAG" next to "Atmospheric
Pressure" on the status screen while the diagnostic
4. Verify that the repair eliminates the problem.
code is active. The Check Engine Lamp will
illuminate.
STOP.
Engine Response The engine may experience low
i01638773
power when the diagnostic code is active.
0108-03 Atmospheric Pr
Troubleshooting:
Sensor Open Circuit (26)
Perform the following diagnostic procedure: "Engine
SMCS Code: 1408-081; 1923-038
Pressure Sensor Open or Short Circuit - Test"
Conditions Which Generate This Code:
Results:
The atmospheric pressure signal voltage is above
OK STOP.
the acceptable range.
i01598565
System Response:
0110-00 High Coolant
Electronic System Response Atmospheric
Temperature Warning (61)
pressure is set to 100 kPa (15 psi).
Service Tool Display or Lamps Caterpillar
SMCS Code: 1906-038
Electronic Technician (ET) will indicate 100 kPa
(15 psi) and display "DIAG" next to "Atmospheric
Conditions Which Generate This Code:
Pressure" on the status screen while the diagnostic
code is active. The Check Engine Lamp will
The engine has been running for at least 30
illuminate.
seconds.
Engine Response The engine may experience low
The diagnostic codes for the coolant temperature
power when the diagnostic code is active.
are not active.
The coolant temperature is equal to 108 C (226 F)
Troubleshooting:
or above 108 C (226 F). For emergency vehicles,
Perform the following diagnostic procedure: "Engine
the coolant temperature is equal to 113 C (235 F)
Pressure Sensor Open or Short Circuit - Test"
or above 113 C (235 F).
Results:
"Engine Monitoring" must be programmed to
"WARNING", "DERATE", or "SHUTDOWN" before
OK STOP.
this diagnostic code can occur.
Note: This diagnostic code represents an event. This
i01638779
diagnostic code does not represent an electronic
0108-04 Atmospheric Pr
system fault.
Sensor Short Circuit (26)
System Response:
SMCS Code: 1408-081; 1923-038
Electronic System Response For "Engine
Monitoring" that is programmed to "DERATE" or
Conditions Which Generate This Code:
"SHUTDOWN", the ECM begins to derate the power.
The ECM also limits the vehicle speed.
The atmospheric pressure signal voltage is below
the acceptable range.
If "Engine Monitoring" is programmed to
"WARNING", the check engine lamp will flash and
System Response:
the warning lamp will turn on continuously.
Electronic System Response Atmospheric
pressure is set to 100 kPa (15 psi).

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