CARTRIDGE KIT 4J8483 - Caterpillar

During normal operation, each pressure sensor outputs a signal voltage that accurately represents the pressure that is sensed by the sensor. However, certain circuit conditions can cause a signal voltage to become inaccurate.During each key on event of at least 2 seconds, the A6:E2 Electronic Control Module (ECM) evaluates the signal voltage from each pressure sensor. The ECM compares each signal voltage to a reference voltage. The reference voltage that is used depends on the sensor.If a signal voltage is close to the reference voltage, the ECM will internally adjust the signal voltage. The internal adjustment causes the pressure value for the sensor to be correct. This process is called automatic sensor calibration.If a signal voltage is not close to the reference voltage, the ECM will not internally adjust the signal voltage. The ECM will set a fault code that indicates there is a problem with the signal voltage.Table 1 indicates the maximum error that is permitted for each sensor, and the reference for that sensor. Refer to the troubleshooting procedure to determine the root cause of the incorrect signal voltage.
Table 1
J1939 Code and Description CDL Code and Description Comments
3251-13
Aftertreatment #1 DPF Differential Pressure : Out of Calibration 2458-13
DPF #1 Differential Pressure Sensor : Out of Calibration During key on, the signal voltage from the diesel particulate filter #1 differential pressure sensor indicated a dpf differential pressure greater than +/- 2 kPa (0.3 psi).
The 2458-13 will not activate for several hours if the ambient temperature is below 7° C (45° F) or if an active regeneration has not been performed.
There is not a reference sensor for this sensor
3609-13
DPF #1 Intake Pressure : Out of Calibration 3464-13
DPF #1 Intake Pressure Sensor : Out of Calibration During key on, the signal voltage from the diesel particulate filter #1 intake pressure sensor indicated a dpf intake pressure greater than +/- 6 kPa (1 psi) from the atmospheric pressure sensor.
Reference sensor : Atmospheric Pressure Sensor
3837-13
Aftertreatment #1 Secondary Air Pressure : Out of Calibration 3493-13
Aftertreatment #1 Secondary Air Pressure Sensor : Calibration Required During key on, the signal voltage from the aftertreatment #1 secondary air pressure sensor indicated a secondary air pressure greater than +/- 12 kPa (2 psi) .from the atmospheric pressure sensor.
Reference sensor : Atmospheric Pressure Sensor Note: The engine coolant temperature must be greater than 0° C (32° F) before beginning this procedure.
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Establish communication between Cat® Electronic Technician (ET) and the ECM . Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
C. Wait at least 30 seconds in order for the diagnostic codes to become active.
Codes
Result: There is an active or there is a logged -13 code.
Proceed to Test Step 2.
2. Check for Debris
A. Turn the keyswitch to OFF.
B. Check the suspect sensor for debris. If applicable, check the reference sensor for debris. Check the sensor measurement port for blockage by debris.
C. If debris is