GASKET 2194669 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comments
105–3
Engine Intake Manifold #1 Temperature : Voltage Above Normal 172–3
Intake Manifold Air Temperature Sensor : Voltage Above Normal The code is logged.
105–4
Engine Intake Manifold #1 Temperature : Voltage Below Normal 172–4
Intake Manifold Air Temperature Sensor : Voltage Below Normal The code is logged.
110-3
Engine Coolant Temperature : Voltage Above Normal 110-3
Engine Coolant Temperature : Voltage Above Normal The ECM detects that the voltage is not in the acceptable range.
The code is logged.
110-4
Engine Coolant Temperature : Voltage Below Normal 110-4
Engine Coolant Temperature : Voltage Below Normal The ECM detects that the voltage is not in the acceptable range.
The code is logged.
171-3
Ambient Air Temperature : Voltage Above Normal 3667-3
Aftertreatment #1 SCR Cabinet Air Temperature Sensor : Voltage Above Normal The code is logged.
171-4
Ambient Air Temperature : Voltage Below Normal 3667-4
Aftertreatment #1 SCR Cabinet Air Temperature Sensor : Voltage Below Normal The code is logged.
174-3
Engine Fuel Temperature 1 : Voltage Above Normal 174-3
Fuel Temperature Sensor : Voltage Above Normal The code is logged.
174-4
Engine Fuel Temperature 1 : Voltage Below Normal 174-4
Fuel Temperature Sensor : Voltage Below Normal The code is logged.
3468-3
Engine Fuel Temperature 2 : Voltage Above Normal 2323-3
Fuel Rail Temperature Sensor : Voltage Above Normal The code is logged.
3468-4
Engine Fuel Temperature 2 : Voltage Below Normal 2323-4
Fuel Rail Temperature Sensor : Voltage Below Normal The code is logged.
Illustration 1 g06322023
Schematic for the primary passive sensors
Illustration 2 g06322034
Schematic for the secondary passive sensors
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: