803554 1 Mercury SPRING

Table 1
J1939 Code and Description CDL Code and Description Comments
171-3
Ambient Air Temperature : Voltage Above Normal 171-3
Ambient Air Temperature Sensor : Voltage Above Normal The ECM detects that the voltage is not in the acceptable range.
The code is logged.
171-4
Ambient Air Temperature : Voltage Below Normal 171-4
Ambient Air Temperature Sensor : Voltage Above Normal The ECM detects that the voltage is not in the acceptable range.
The code is logged.
1180-3
Engine Turbocharger 1 Turbine Inlet Temperature : Voltage Above Normal 3908-3
Engine Turbocharger #1 Turbine Intake Temperature Sensor : Voltage Above Normal If the signal from the other exhaust temperature sensor is OK, the signal from that sensor is used. If the signal from the other exhaust temperature sensor is not OK, a default value of 0 °C (32 °F) is used.
The code is logged.
1180-4
Engine Turbocharger 1 Turbine Inlet Temperature : Voltage Below Normal 3908-4
Engine Turbocharger #1 Turbine Intake Temperature Sensor : Voltage Below Normal If the signal from the other exhaust temperature sensor is OK, the signal from that sensor is used. If the signal from the other exhaust temperature sensor is not OK, a default value of 0 °C (32 °F) is used.
The code is logged.
1180-8
Engine Turbocharger 1 Turbine Inlet Temperature : Abnormal Frequency, Pulse Width, or Period 3908-8
Engine Turbocharger #1 Turbine Intake Temperature Sensor : Abnormal Frequency, Pulse Width, or Period If the signal from the other exhaust temperature sensor is OK, the signal from that sensor is used. If the signal from the other exhaust temperature sensor is not OK, a default value of 0 °C (32 °F) is used.
The code is logged.
1181-3
Engine Turbocharger 2 Turbine Inlet Temperature : Voltage Above Normal 3909-3
Engine Turbocharger #2 Turbine Intake Temperature Sensor : Voltage Above Normal If the signal from the other exhaust temperature sensor is OK, the signal from that sensor is used. If the signal from the other exhaust temperature sensor is not OK, a default value of 0 °C (32 °F) is used.
The code is logged.
1181-4
Engine Turbocharger 2 Turbine Inlet Temperature : Voltage Below Normal 3909-4
Engine Turbocharger #2 Turbine Intake Temperature Sensor : Voltage Below Normal If the signal from the other exhaust temperature sensor is OK, the signal from that sensor is used. If the signal from the other exhaust temperature sensor is not OK, a default value of 0 °C (32 °F) is used.
The code is logged.
1181-8
Engine Turbocharger 2 Turbine Inlet Temperature : Abnormal Frequency, Pulse Width, or Period 3909-8
Engine Turbocharger #2 Turbine Intake Temperature Sensor : Abnormal Frequency, Pulse Width, or Period If the signal from the other exhaust temperature sensor is OK, the signal from that sensor is used. If the signal from the other exhaust temperature sensor is not OK, a default value of 0 °C (32 °F) is used.
The code is logged.
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 or logged.
Proceed to Test Step 2.
Result: A -4 code is active or logged.
Proceed to Test Step 3.
Result: A -8 code is active or logged.
Proceed to Test Step 5.
2. Create a Short at the Sensor Connector
A. Remove electrical power from the engine.
B.