BRACKET 5K3928 - Caterpillar

Test Step 1. Inspect Electrical Connectors And Wiring.
Thoroughly inspect the following connections:
P1/J1 ECM engine harness connector
P20/J20 MIC machine harness connector
P200/J200 Intake manifold pressure sensor
P201/J201 Engine oil pressure sensorRefer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Illustration 4 g01331420
(14) Intake manifold pressure
(24) Engine oil pressure
(26) Sensor VRef +5V
(34) Engine sensor common
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the +5 Volt sensor supply:
P1-14 Intake Manifold Pressure
P1-24 Engine Oil Pressure
P1-26 Sensor VRef +5V
P1-34 Engine Sensor Common Refer to Illustration 4.
Check the ECM connector (Allen head screw) for the correct torque of 6.0 N m (55 lb in).
Check the harness and wiring for abrasion and pinch points from the sensors to the ECM. Expected Result:All connectors, pins and sockets should be completely coupled and/or inserted and the harness and wiring should be free of corrosion, abrasion or pinch points.Results:
OK - Proceed to Test Step 2.
Not OK - 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 fault.STOPTest Step 2. Check for Active Diagnostic Codes
Connect the electronic service tool to the diagnostic connector.
Turn the keyswitch to the ON position. Do not start the engine.
Monitor the active diagnostic code screen