ENGINE AR-PRIMARY 5157422 - Caterpillar

Table 1
J1939 Code and Description Comments
3216-11
Aftertreatment #1 Intake NOx : Other Failure Mode The aftertreatment intake NOx sensor heater cannot generate enough heat or the power supply is intermittent.
3216-12
Aftertreatment #1 Intake NOx : Failure A failed aftertreatment intake NOx sensor has been detected.
3226-11
Aftertreatment #1 Outlet NOx : Other Failure Mode The aftertreatment outlet NOx sensor heater cannot generate enough heat or the power supply is intermittent.
3226-12
Aftertreatment #1 Outlet NOx : Failure A failed aftertreatment outlet NOx sensor has been detected.
3360-12
Aftertreatment 1 Diesel Exhaust Fluid Controller : Failure A Diesel Exhaust Fluid Controller (DCU) has been flashed or a failed DCU has been detected.
3516–2
Aftertreatment #1 DEF Concentration: Erratic, Intermittent, or Incorrect The DEF quality sensor is unable to read the DEF concentration due to an optical path obstruction.
3516–12
Aftertreatment #1 DEF Concentration: Failure A failed DEF Quality Sensor has been detected Note: Turn the keyswitch to the OFF position before connecting or disconnecting these components.If the Caterpillar Electronic Technician (ET) will not communicate with the ECM, refer to Troubleshooting, "Electronic Service Tool Does Not Communicate" before you begin this procedure. The procedure verifies that electrical power is being supplied to the ECM and to the service tool connector.The data links are used to communicate information between the engine ECM and other control modules that are a part of the application. Cat ET also communicates with the ECM via the data links.The service tool connector contains connections for electrical power and for the data links.When the keyswitch is in the OFF position, Cat ET may communicate with the ECM. However, the communications may be disrupted and the communications may require frequent reconnection. In order to avoid this problem, place the keyswitch in the ON position when Cat ET is being used.Cat ET may display the following error message:"The version of the ECM is not recognized and the integrity of the changed parameters and displayed data is not guaranteed."This message indicates that one of the following conditions exist:
The flash file in the ECM is newer than the version of Cat ET.
The latest version of Cat ET has not been installed.
Illustration 1 g06156053Note: The DEF Quality Sensor is only available on 2017models or later.
Table 2
Troubleshooting Test Steps Values Results
1. Check the Connectors
A. Turn the keyswitch to ON.
B. Connect to the "Engine #1 Aftertreatment Controller" using Cat ET.
C. Record all active and logged codes.
D. Turn the keyswitch to OFF.
E. Allow the system to completely power down before disconnecting connectors.
F. Thoroughly inspect the connectors that are associated with the data link circuits. Verify that the connectors are free of debris, free of corrosion and securely connected.
Connectors
Result: The connectors were connected properly and did not have corrosion or moisture.
If a -11 code is active or logged, Proceed to Test Step 2.
If a 3360-12 or 3820-12 code is active or logged, Proceed to Test Step 3.
If a 3216-12, 3655-12, 3226-12, or 3609-12 code is active or logged, replace the appropriate NOx sensor. Refer to Special Instruction, REHS8151 for special handling instructions. Proceed to Test Step 6.
Result: A 3516–12