854257 2 Mercury GASKET

Table 1
Diagnostic Trouble Codes
J1939 Code and Description Conditions that Generate the Code System Response
100-3 Engine Oil Pressure : Voltage Above Normal The Electronic Control Module (ECM) detects signal voltage that is above normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
100-4 Engine Oil Pressure : Voltage Below Normal The ECM detects signal voltage that is below normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
101-3 Engine Crankcase Pressure : Voltage Above Normal The ECM detects signal voltage that is above normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
101-4 Engine Crankcase Pressure : Voltage Below Normal The ECM detects signal voltage that is below normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
102-3 Engine Intake Manifold #1 Pressure : Voltage Above Normal The ECM detects signal voltage that is above normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
102-4 Engine Intake Manifold #1 Pressure : Voltage Below Normal The ECM detects signal voltage that is below normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
108-3 Barometric Pressure : Voltage Above Normal The ECM detects signal voltage that is above normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
108-4 Barometric Pressure : Voltage Below Normal The ECM detects signal voltage that is below normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
411-3 Engine Exhaust Gas Recirculation Differential Pressure : Voltage Above Normal The ECM detects signal voltage that is above normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
411-4 Engine Exhaust Gas Recirculation Differential Pressure : Voltage Below Normal The ECM detects signal voltage that is below normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
3358-3 Engine Exhaust Gas Recirculation Inlet Pressure : Voltage Above Normal The ECM detects signal voltage that is above normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
3358-4 Engine Exhaust Gas Recirculation Inlet Pressure : Voltage Below Normal The ECM detects signal voltage that is below normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
3563-3 Engine Intake Manifold #1 Absolute Pressure : Voltage Above Normal The ECM detects signal voltage that is above normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
3563-4 Engine Intake Manifold #1 Absolute Pressure : Voltage Below Normal The ECM detects signal voltage that is below normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
5580-3 Fuel Pressure Sensor - After Fuel Filter : Voltage Above Normal The ECM detects signal voltage that is above normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value.
5580-4 Fuel Pressure Sensor - After Fuel Filter : Voltage Below Normal The ECM detects signal voltage that is below normal for the programmed delay time. The code is logged.
The value of the parameter is set to a default value. The supply voltage is routed to terminal 1 of each sensor connector. The sensor return is routed to terminal 2 of each sensor connector. For the pressure sensors, 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.Diagnostic Testing using Caterpillar Electronic Technician (ET)Wiggle Test - The wiggle test allows the technician 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.
Illustration 1 g02175025
Schematic for the active sensors
Illustration 2 g02175152
Terminal locations at the P2 ECM connector for the analog sensors
(P2-15) Intake manifold pressure sensor
(P2-27) Fuel pressure sensor (filtered fuel pressure)
(P2-28) Engine oil pressure sensor
(P2-30) Analog return
(P2-33) Crankcase pressure sensor
(P2-40) NRS differential pressure sensor
(P2-72) Analog supply
(P2-74) NRS absolute pressure sensor
(P2-78) Atmospheric pressure sensor
(P2-81) Analog supply
(P2-83) Analog return Test Step 1. Check for Diagnostic Codes
Connect Cat ET to the service tool connector. Establish a connection with the engine ECM.
Turn the keyswitch to the ON position.
Look for the following codes that are active or logged:
-3
-4
-10
-21Results:
Active -3 Code - A -3 diagnostic code is active. Proceed to Test Step 2.
Active -4 code - A -4 diagnostic code is active. Proceed to Test Step 3.
Active -21 Code - A -21 diagnostic code is active.Repair: The -21 diagnostic code indicates that the sensor is not receiving the correct supply voltage. Refer to Troubleshooting, "Sensor Supply - Test" for information that is related to troubleshooting the supply circuit for the suspect sensor.STOPTest Step 2. Create a Short at the Sensor Connector
Use a test lamp in order to create a short between terminal 3 (signal) and terminal 2 (return) at the sensor connector.
Turn the keyswitch to the ON position.
Monitor the diagnostic codes on Cat ET. Check for an active -4 diagnostic code for the suspect sensor.
Turn the keyswitch to the OFF position. Results:
Active -4 - A -4 diagnostic code became active after creating the short at the sensor connector.Repair: The wiring is OK. Replace the sensor.Verify that the problem is resolved.STOP
Active -3 - The -3 diagnostic code remains active for the suspect sensor. Proceed to Test Step 4.Test Step 3. Create an Open at the Suspect Sensor Connector
Turn the keyswitch to the OFF position.
Disconnect the sensor connector of the suspect sensor