RING 9M2095 - Caterpillar

Use this procedure to troubleshoot a problem with a sensor. Also, use this procedure if one of the following diagnostic codes is active or easily repeated.
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 ECM detects that the voltage is not in the acceptable range.
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 ECM detects that the voltage is not in the acceptable range.
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.
172-3
Engine Air Inlet Temperature : Voltage Above Normal 2526-3
Air Inlet Temperature Sensor : Voltage Above Normal The code is logged.
172-4
Engine Air Inlet Temperature : Voltage Below Normal 2526-4
Air Inlet 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.
1131-3
Engine Intake Manifold #2 Temperature : Voltage Above Normal 1796-3
Intake Manifold #2 Air Temperature Sensor : Voltage Above Normal The code is logged.
1131-4
Engine Intake Manifold #2 Temperature : Voltage Below Normal 1796-4
Intake Manifold #2 Air Temperature Sensor : Voltage Below Normal The code is logged.
2433-3
Engine Exhaust Manifold Bank #2 Temperature #1 : Voltage Below Normal 828-3
Right Exhaust Temperature Sensor : Voltage Above Normal The code is logged.
2433-4
Engine Exhaust Manifold Bank #2 Temperature #1 : Voltage Below Normal 828-4
Right Exhaust Temperature Sensor : Voltage Below Normal The code is logged.
2434-3
Engine Exhaust Manifold Bank #1 Temperature #1 : Voltage Above Normal 827-3
Left Exhaust Temperature Sensor : Voltage Above Normal The code is logged.
2434-4
Engine Exhaust Manifold Bank #1 Temperature #1 : Voltage Below Normal 827-4
Left Exhaust Temperature Sensor : Voltage Below Normal The code is logged. The sensor signal for the passive sensor is routed from the Electronic Control Module (ECM) to terminal 1 of each sensor connector. The sensor return for the passive sensors is routed to the ECM from terminal 2 of each sensor connector.Diagnostics on the Cat® 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.Refer to the main engine Schematic, when troubleshooting the Sensor Signal (Analog, Passive) -Test.
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.
Result: