0231-12 J1939 Device Not Responding

135

TM 9-2320-312-24-2

Troubleshooting Section

Service Tool Display or Lamps The Caterpillar

System Response:

Electronic Technician (ET) will display "NO COMM"

on the status screen next to the inputs that are not

Electronic System Response Communications

receiving communications.

with other control modules that use the J1939 data

link may be interrupted while this diagnostic code

Perform the following diagnostic procedure:

is active.

"Powertrain Data Link Circuit - Test"

Note: If the vehicle is not using the J1939 data link,

program "Powertrain Data Link" to "None". After the

Results:

"Powertrain Data Link" is programmed correctly this

OK STOP.

active diagnostic code should deactivate.

Troubleshooting:

i01641146

0232-03 5 Volt Supply Above

Contact the OEM dealer in order to determine if the

vehicle was configured for the J1939 data link. If the

Normal (21)

vehicle is not using the J1939 data link, program

"Powertrain Data Link" to "None". This will correct

SMCS Code: 1408-081; 1900-038; 1901-038

the problem.

Conditions Which Generate This Code:

If the vehicle is using the J1939 data link, proceed

with the following procedure:

The supply voltage for the pressure sensors of the

engine is exceeding a level that is normal.

Perform the following diagnostic procedure:

"Powertrain Data Link Circuit - Test"

System Response:

Results:

Electronic System Response All pressure sensors

of the engine are set to default values. All diagnostic

OK STOP.

codes for the pressure sensors of the engine are

disabled while this diagnostic code is active.

i01617802

Service Tool Display or Lamps Caterpillar

0231-12 J1939 Device Not

Electronic Technician (ET) will display the default

Responding

status of the sensors. This default status is indicated

in the following list:

SMCS Code: 1901-038

Boost pressure 0 kPa (0 psi)

Conditions Which Generate This Code:

Engine Oil Pressure 600 kPa (87 psi)

This condition indicates that the J1939 data link has

Atmospheric Pressure 100 kPa (15 psi)

a short circuit or an open circuit. All of the following

conditions must be met:

Injection Actuation Pressure 17.5 kPa (2.53 psi)

The parameter "Powertrain Data Link" must be

Injection Actuation Driver Current 40%

programmed J1939.

The ECM is unsuccessful in receiving a response

ET will also display "DIAG" next to the status of

the sensor in order to indicate that the sensor is

to a message that has been transmitted for 10

operating at the value that is shown due to an active

seconds.

diagnostic code.

Electronic System Response J1939

Engine Response An active diagnostic code may

communications to the engine and from the

not cause any noticeable effect on engine response.

engine are terminated while this code is active. The

However, the active diagnostic code may cause the

functionality of some features may be affected while

engine to have the following effects:

this code is active. Traction control or transmission

controls may be disabled.

Run rough.

Low power