0108-03 Atmospheric Pr Sensor Open Circuit (26)

118

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).