MANIFOLD 2P3087 - Caterpillar

Illustration 2 g01157054
Left side engine view (typical example) (1) J500/P500 Injection actuation pressure control valve connector (2) Injection actuation pressure sensor (3) J2/P2 ECM connector
Illustration 3 g01161363
Left side engine view (typical example) (1) J500/P500 Injection actuation pressure control valve connector (2) Injection actuation pressure sensor (3) J2/P2 ECM connectorNote: There are two possible locations for the injection actuation pressure sensor. Refer to Illustrations 2 and 3.
Thoroughly inspect connectors (1) and (3) . Also, thoroughly inspect the connector for sensor (3) . Refer to diagnostic functional tests Troubleshooting, "Electrical Connectors - Inspect" for details.
Illustration 4 g01151730
Pin locations on ECM connector (P2-61) IAP control valve (P2-62) Sensor return
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the IAPCV.
Check the allen head screw for the ECM connectors for the proper torque. Refer to diagnostic functional tests Troubleshooting, "Electrical Connectors - Inspect" for the correct torque values.
Check the harness and wiring for abrasion and for pinch points from the IAPCV 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 connectors and the wiring appear to be OK. Proceed to Test Step 3.
Not OK - A problem has been found with the connectors and/or the 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 3. Measure the Solenoid Resistance of the Injection Actuation Pressure Control Valve
Remove the electrical power from the ECM.
Disconnect the IAPCV connector.Note: Ensure that the seal for the IAPCV connector remains in place.
Measure the resistance of the solenoid at the terminals for the IAPCV. Record the measurement.
Reverse the leads of the multimeter and measure the resistance again.Expected Result:The solenoid resistance of the injection actuation pressure control valve is between 6.5 and 10.5 Ohms.Results:
OK - The measurement is between 6.5 and 10.5 Ohms. The solenoid resistance is correct. Reconnect the harness connector for the injection actuation pressure control valve. Proceed to Test Step 4.
Not OK - The solenoid resistance is out of the range.Repair: Replace the high pressure oil pump. Check that the diagnostic code is no longer active. Verify that the repair eliminates the original problem.STOPTest Step 4. Measure the Solenoid Resistance through the Engine Harness
Remove the electrical power from the ECM.
Disconnect the P2 connector at the ECM.
Measure the resistance from terminal P2-61 to terminal P2-62.Compare the measurement to the resistance value that was recorded in the previous step. A harness that is in good repair will add less than two percent to the total resistance of the circuit.
Measure the resistance from terminal P2-61 and terminal P2-62 to the remaining terminals that are in the P2 ECM connector.The correct measurements will