F17557 Force GASKET

Illustration 1 g01205508
Schematic for the ECS with EMCP 3
Test Step 1. Check for Connector Damage.
Set the EMCP 3 to the STOP position.
Turn the battery disconnect switch to the OFF position.
Thoroughly inspect the ECM connectors J1/P1 and J2/P2. Inspect all of the other connectors. Refer to the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors" for details.
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the circuit.
Check the allen head screw on each ECM connector for the proper torque. Refer to Troubleshooting, "Inspecting Electrical Connectors" for the correct torque values.
Check the harness and the wiring for abrasion and for pinch points. 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 wiring are okay. Proceed to Test Step 2.
Not OK - The connectors and/or wiring are not okay.Repair: Repair the connectors and/or wiring or replace the connectors and/or wiring.STOPTest Step 2. Check for a CID-FMI.
Connect the Caterpillar Electronic Technician (ET).
Turn the battery disconnect switch to the ON position.
Set the EMCP 3 to the STOP position.
Observe the logged diagnostic codes on Cat ET.
Observe the status screen on Cat ET. Expected Result:Cat ET indicates a CID-FMI 336-02.Cat ET indicates that the status for the Engine Control Switch is "Abnormal/Incorrect Data".Results:
OK - Cat ET indicates a CID-FMI 336-02 and Cat ET indicates that the status for the Engine Control Switch is "Abnormal/Incorrect Data". Proceed to Test Step 3.
Not OK - Cat ET does not indicate a CID-FMI 336-02 and "Abnormal/Incorrect Data".Repair: The problem may be intermittent. If the problem is intermittent, perform the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors".STOPTest Step 3. Check the Wiring for an Open Condition
Turn the EMCP 3 to the STOP position.
Turn the battery disconnect switch to the OFF position.
Disconnect the J1/P1 ECM connector.
Check for continuity between P1-22 start/run/stop 2 and P1-21 start/run/stop 1 with a resistance measurement. Expected Result:A short circuit condition exists.Results:
OK - A short circuit condition exists. Proceed to Test Step 4.
Not OK - A short circuit condition does not exist between P1-22 and P1-21.Repair: There is an open circuit between P1-22 and P1-21. Repair the wires or replace the wires between P1-22 and P1-21. Verify that the problem has been resolved.STOPTest Step 4. Check ECM For Proper Operation
Remove the wire F716 from P1-21. Install a jumper wire with a socket terminal into PA-21.
Remove the wire F716 from P1-22. Install a jumper wire with a socket terminal into P1-22.
Remove the wire E998 from P2-66. Install a jumper wire with a socket terminal into P2-66.
Connect the three jumper wires together.
Turn the battery disconnect switch to the ON position. Expected Result:The status for the Engine Control Switch is Run. The active 336-02 is gone.Results:
OK - The status for the Engine Control Switch is Run. The active 336-02 is gone.Repair: There may be an intermittent problem. If the problem is intermittent, perform the diagnostic functional testTroubleshooting, "Inspecting Electrical Connectors". STOP
Not OK - The status for the Engine Control Switch is "Abnormal/Incorrect Data". The 336-02 code is active.Repair: Replace the ECM. Refer to the diagnostic procedure Troubleshooting, "Replacing the ECM".STOP