MANIFOLD 7C2277 - Caterpillar

Illustration 2 g01182300
Left side engine view (typical component locations)
(1) Injection Actuation Pressure Control Valve (IAPCV)
(2) Injection actuation pressure sensor
(3) J2/P2 ECM connector
(4) Pressure port for high pressure oil supply
(5) Low pressure oil line
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 connector Note: There are two possible locations for the injection actuation pressure sensor. Refer to Illustrations 2and 3.
Thoroughly inspect the connectors for sensors (1) and (2). Also, thoroughly inspect connectors (3). Refer to Troubleshooting, "Electrical Connectors - Inspect".
Illustration 4 g01183027
P2 terminals that are associated with the injection actuation pressure sensor
(P2-2) +5 VDC
(P2-3) Return
(P2-27) Injection actuation pressure sensor
Illustration 5 g01159881
Connectors for the injection actuation pressure sensor
(A) +5 V Supply
(B) Return
(C) Signal
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the injection actuation pressure sensor.
Check the torque of the allen head screws for the ECM connectors. Refer to Troubleshooting, "Electrical Connectors - Inspect" for the correct torque values.
Check the harness and wiring for abrasion and for pinch points from the sensor back to the ECM. Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted. The harness and wiring are free of corrosion, of abrasion, and of pinch points.Results:
OK - The connectors and wiring are OK. Proceed to Test Step 4.
Not OK - There is a problem in the wiring and/or a connector.Repair: Repair the wiring and/or the connector. Replace parts, if necessary. Ensure that all of the seals are properly in place and ensure that the connectors are completely coupled. Verify that the problem is resolved.STOPTest Step 4. Check the Status of the Sensor
Turn the