3863211 Volvo.Penta Propeller nut

Illustration 1 g01117326
Schematic for engine pressure sensors
Illustration 2 g01117317
Pin locations on ECM connector
(P2-2) Pressure sensor supply (+5 VDC)
(P2-3) Pressure sensor common
(P2-14) Atmospheric pressure sensor
(P2-17) Fuel pressure sensor
(P2-24) Engine oil pressure sensor
(P2-25) Injection actuation pressure sensor
(P2-40) Boost pressure sensor
(P2-41) Pressure sensor supply (engine oil) (+5 VDC)
(P2-42) Pressure sensor common (engine oil) Test Step 1. Inspect Electrical Connectors and Wiring
Turn the keyswitch to the OFF position.
Thoroughly inspect the J2/P2 ECM connector and the connectors for each analog sensor. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connectors that are associated with the analog sensor supply:
Check the ECM connector (allen head screw) for the proper torque. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Check the harness and wiring for abrasion and for pinch points from the sensors back to the ECM. Expected Result:All connectors, pins and sockets are completely coupled and/or inserted and the harness and wiring are free of corrosion, of abrasion and of pinch points.Results:
OK - The harness and connectors appear to be OK. Proceed to Test Step 2 .
Not OK - There is a problem with the connectors and/or wiring.Repair: Repair the connectors or wiring and/or replace the connectors or wiring. Ensure that all of the seals are properly in place and ensure that the connectors are completely coupled.Verify that the repair eliminates the problem.STOPTest Step 2. Check for Active Diagnostic Codes
Connect Caterpillar Electronic Technician (ET) to the service tool connector.
Turn the keyswitch to the ON position.
Monitor the active diagnostic code screen on Cat ET. Check and record any active diagnostic codes. Note: Wait at least 15 seconds in order for the diagnostic codes to become active.Expected Result:One of the following diagnostic codes is active:
232-03 5 Volt supply voltage high (21)
232-04 5 Volt supply voltage low (21)Results:
OK - A 232-03 diagnostic code is active. Proceed to Test Step 3.
Not OK - A 232-04 diagnostic code is active. Proceed to Test Step 4.Test Step 3. Check the Voltage On the +5 V Supply Wire
Turn the keyswitch to the OFF position.
Disconnect all of the following analog sensors at the sensor connector:
Atmospheric pressure sensor J203/P203
Boost pressure sensor J200/P200
Engine oil pressure sensor J201/P201
Injection actuation pressure sensor J204/P204
Fuel pressure sensor J205/P205 (if equipped)
Turn the keyswitch to the ON position.
Measure the voltage between terminal A and terminal B at the sensor connectors. Expected Result:The voltage is 5.0 0.2 VDC.Results:
OK - The voltage is correct.Repair: Replace all wires to the original configuration. Clear all diagnostic codes. Check for active diagnostic codes. If the problem is intermittent, refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".STOP
Not OK - The voltage is incorrect. Proceed to Test Step 5.Test Step 4. Disconnect the +5 V Pressure Sensors While You Monitor the Active Diagnostic Codes
Disconnect the following sensors one at a time:
Injection actuation pressure sensor J204/P204
Engine oil pressure sensor J201/P201
Atmospheric pressure sensor J203/P203
Turbocharger outlet pressure sensor J200/P200
Wait for 15 seconds after each pressure sensor is disconnected. Check for an active diagnostic code on Cat ET. Expected Result:The 232-04 diagnostic code deactivates.Results:
OK - The 232-04 diagnostic code deactivates. The diagnostic code is not active after a specific sensor is disconnected.Repair: Reconnect the sensor that is suspected of causing the problem. If the problem returns after the reconnection of the sensor, disconnect the sensor. If the problem disappears after the disconnection of the sensor, replace the sensor. Replace all wires to the original configuration. Clear all diagnostic codes. Verify that the repair eliminates the problem.STOP
Not OK - The 232-04 diagnostic code stays active. Leave the sensors disconnected. Proceed to Test Step 5.Test Step 5. Check the +5 V Supply Wire for a Short to Engine Ground or a Short to Other Wires in the Harness
Turn the keyswitch to the OFF position.
Disconnect the J2/P2 ECM connector.
Leave the analog sensors disconnected at the sensor connectors. Note: Wiggle the harness during the following measurements in order to reveal any intermittent short condition.
Measure the resistance from the P2-2 +5 V Supply to every terminal on P2 ECM connector. Measure the resistance from the P2-2 to the ECM ground strap. Measure the resistance from the P2-41 +5 V Supply to every terminal on P2 ECM connector. Measure the resistance from the P2-41 to the ECM ground strap. Expected Result:Each resistance measurement is more than 20,000 Ohms.Results:
OK - The resistance check does not indicate a short in the engine harness or a short to engine ground. Proceed to Test Step 6.
Not OK - A resistance measurement is less than 20,000 Ohms. The +5 V supply wire is shorted in the engine harness or the +5 V supply wire is shorted to engine ground.Repair: Repair the wire or replace the wire. Clear all logged diagnostic codes. Replace all wires to the original configuration. Verify that the repair eliminates the problem.STOPTest Step 6. Check the +5 V Supply and the Sensor Common for an Open Circuit
Install a wire jumper between P2-2 +5 V Supply and P2-3 Sensor Common. Install a wire jumper between P2-41 +5 V Supply and P2-42 Sensor Common. Note: Wiggle the harness during the following measurements in order to reveal any intermittent short condition.
Record the resistance at each analog sensor connector between terminal A and terminal B.
Remove the wire jumpers. Expected Result:The resistance is less than 5 Ohms for each measurement.Results:
OK - The resistance check does not indicate an open circuit in the engine harness. Proceed to Test Step 7.
Not OK - A resistance measurement is greater than 5 Ohms. The +5 V supply wire or the sensor common has excessive resistance.Repair: Repair the wires or replace the wires. Clear all logged diagnostic codes. Replace all wires to the original configuration. Verify that the repair eliminates the problem.STOPTest Step 7. Check the +5 V Supply at the ECM
Remove the wire G828-WH(White) (P2-2 +5 V Supply) from the P2 ECM connector. Install a wire