70937 Mercruiser "O" RING, OIL SEAL CARRIER

Table 1
J1939 Code and Description CDL Code and Description Comments
100-3
Engine Oil Pressure : Voltage Above Normal 100-3
Engine Oil Pressure Sensor : Voltage Above Normal The Electronic Control Module (ECM) detects signal voltage that is not in the acceptable range.
The code is logged.
100-4
Engine Oil Pressure : Voltage Below Normal 100-4
Engine Oil Pressure Sensor : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
108-3
Barometric Pressure : Voltage Above Normal 274-3
Atmospheric Pressure Sensor : Voltage Above Normal The code is logged.
108-4
Barometric Pressure : Voltage Below Normal 274-4
Atmospheric Pressure Sensor : Voltage Below Normal The code is logged.
411-3
EGR Differential Pressure : Voltage Above Normal 3387-3
EGR Differential Pressure Sensor : Voltage Above Normal The code is logged.
411-4
EGR Differential Pressure : Voltage Below Normal 3387-4
EGR Differential Pressure Sensor : Voltage Below Normal The code is logged.
1176-3
Engine Turbocharger #1 Compressor Inlet Pressure : Voltage Above Normal 2738-3
Turbocharger #1 Compressor Inlet Pressure Sensor : Voltage Above Normal The code is logged.
1176-4
Engine Turbocharger #1 Compressor Inlet Pressure : Voltage Below Normal 2738-4
Turbocharger #1 Compressor Inlet Pressure Sensor : Voltage Below Normal The code is logged.
2433-3
Engine Exhaust Manifold Bank #2 Temperature #1 : Voltage Above 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.
3358-3
EGR Inlet Pressure : Voltage Above Normal 3385-3
EGR Intake Pressure Sensor : Voltage Above Normal The code is logged.
3358-4
EGR Inlet Pressure : Voltage Below Normal 3385-4
EGR Intake Pressure Sensor : Voltage Below Normal The code is logged.
3563-3
Engine Intake Manifold #1 Absolute Pressure : Voltage Above Normal 1785-3
Intake Manifold Pressure Sensor : Voltage Above Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
3563-4
Engine Intake Manifold #1 Absolute Pressure : Voltage Below Normal 1785-4
Intake Manifold Pressure Sensor : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
5422-3
Engine Intake Manifold #2 Absolute Pressure : Voltage Above Normal 3031-3
Intake Manifold #2 Pressure Sensor : Voltage Above Normal The code is logged.
5422-4
Engine Intake Manifold #2 Absolute Pressure : Voltage Below Normal 3031-4
Intake Manifold #2 Pressure Sensor : Voltage Below Normal The code is logged.
5580-3
Engine Filtered Fuel Delivery Absolute Pressure : Voltage Above Normal 460-3
Fuel Pressure Sensor - After Fuel Filter : Voltage Above Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
5580-4
Engine Filtered Fuel Delivery Absolute Pressure : Voltage Below Normal 460-4
Fuel Pressure Sensor - After Fuel Filter : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
5969-3
Engine Exhaust Manifold Bank #2 Temperature #2 : Voltage Above Normal 2351-3
Right Exhaust #2 Temperature : Voltage Above Normal The code is logged.
5969-4
Engine Exhaust Manifold Bank #2 Temperature #2 : Voltage Below Normal 2351-4
Right Exhaust #2 Temperature : Voltage Below Normal The code is logged.
5970-3
Engine Exhaust Manifold Bank #1 Temperature #2 : Voltage Above Normal 2350-3
Left Exhaust #2 Temperature : Voltage Above Normal The code is logged.
5970-4
Engine Exhaust Manifold Bank #1 Temperature #2 : Voltage Below Normal 2350-4
Left Exhaust #2 Temperature : Voltage Below Normal 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 Electronic Control Module (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 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.
Illustration 1 g06301979
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 ET to monitor the following:
- -4 code
F. Turn the keyswitch to the OFF position.
Create a Short
Result: A -4 code did not become active.
Proceed to Test Step 4.
Result: A -4 code became active.
Repair: The wiring harness is OK. Replace the sensor.
Verify that the repair eliminated the problem.
3. Create an Open at the Sensor Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the sensor with the active -4 code.
C. Connect Cat ET.
D. Use Cat ET to monitor the following:
- -3 code
E. Turn the keyswitch to the OFF position.
Create an Open
Result: A -3 code did not become active.
Proceed to Test Step 4.
Result: A -3 code became active.
Repair: The wiring harness is OK. Replace the sensor.
Verify that the repair eliminated the problem.
4. Check the 5 VDC Supply Voltage at the Sensor Connector
A. Turn the keyswitch to the ON position.
B. Measure the voltage at the sensor connector between the following pins:
- Pin 1 and Pin 2
C. Reconnect the sensor.
5.0 0.2 VDC
Result: The supply voltage is approximately 5.0 0.2 VDC.
Proceed to Test Step 5.
Result: The supply voltage is not approximately 5.0 0.2 VDC.
Repair:There is a short in the wiring harness to the battery. Repair or replace the wiring harness.
If the problem is not resolved, proceed to Test Step 5.
5. Perform the Wiggle Test
Carefully following this procedure is the best way to identify the root cause of an intermittent problem.
A. Connect Cat