COUPLING AS 0777143 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comments
4360-3
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Voltage Above Normal 3105-3
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Voltage Above Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
4360-4
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Voltage Below Normal 3105-4
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
4363–3
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : Voltage Above Normal 3107–3
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : Voltage Above Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
4363–4
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : Voltage Below Normal 3107–4
Aftertreatment #1 SCR Catalyst Outlet Gas Temperature : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
6797-3
Aftertreatment #1 SCR Intake Absolute Pressure : Voltage Above Normal 4054-3
Aftertreatment #1 SCR Catalyst Intake Pressure Sensor : Voltage Above Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
6797-4
Aftertreatment #1 SCR Intake Absolute Pressure : Voltage Below Normal 4054-4
Aftertreatment #1 SCR Catalyst Intake Pressure Sensor : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged. The supply voltage is routed to terminal 1 of each sensor connector. The sensor return is routed to terminal 2 of each sensor connector. The sensor signal is routed to terminal 3 of each sensor connector. The ECM provides short circuit protection for the internal power supply. A short circuit to the battery will not damage the internal power supply.Diagnostics on the Caterpillar Electronic Technician (ET)Wiggle Test - The Wiggle Test allows you to monitor the status of the signals from the sensors.For additional information regarding the Wiggle Test, refer to the documentation that accompanies the Cat ET software.Complete the procedure in the order in which the steps are listed.
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Determine if a code is active or logged.
Codes
Result: A -3 code is active.
Proceed to Test Step 2.
Result: A -4 code is active.
Proceed to Test Step 3.
2. Create a Short at the Sensor Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the sensor with the active -3 code.
C. Install the jumper wire between the following terminals at the sensor connector:
- Terminal 3 (signal) and Terminal 2 (sensor return)
D. Connect Cat ET.
E. Use Cat