MANIFOLD GP-EXHAUST 2875323 - Caterpillar

Illustration 1 g00832285
Engine Running Output Circuit
Illustration 2 g00832305
Location for the ECM terminalTest Step 1. Inspect Electrical Connectors and Wiring
Thoroughly inspect ECM vehicle harness connector J1/P1, and the firewall bulkhead connector.Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Perform a 45 N (10 lb) pull test on terminal 13 in the ECM connector.
Check the ECM connector (allen head screw) for the proper torque of 6.0 N m (55 lb in).
Check the harness and wiring for abrasion and for pinch points from the sensor 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: Perform the following 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. Stop.Test Step 2. Use the Caterpillar Electronic Technician (Cat ET) to Check the Relay
Connect Cat ET to the data link connector.
Turn the ignition key switch to the ON position.
Access the special test "Engine Running Output" on Cat ET. The "Engine Running Output" test will enable the engine running output when the test is active.
Begin the "Engine Running Output" test and listen for the relay to click. You may need to be near the engine in order to hear the click.Expected Result:The relay activates when the special test is enabled.Results:
Yes - The ECM and vehicle components are operating correctly. Stop.
No - Proceed to Test Step 3.Test Step 3. Use Cat ET to Check the ECM
Connect Cat ET to the data link connector.
Turn the ignition key switch to the OFF position.
Disconnect the ECM vehicle harness connector J1/P1.
Connect a breakout T between ECM connectors J1 and P1.
Connect a voltage test lamp to terminal 13 (Output 4) and terminal 65 (-battery) of the breakout T.
Turn the ignition key switch to the ON position.
Access the special test "Engine Running Output" on Cat ET.
Cycle the special test "Engine Running Output" to "Active" and to "Not Active" and watch the voltage test lamp.
Stop the special test.Note: A multimeter can not be used in place of the voltage test lamp when the ECM outputs are being tested.Expected Result:The voltage test lamp turns on when the test is active. The voltage test lamp turns off when the test is not active.Results:
Yes - The ECM is OK. The problem is in the vehicle wiring. Inspect the vehicle wiring and then repair the vehicle wiring. Otherwise, send the vehicle to the OEM dealer for repair. Verify that the original condition is resolved. Stop.
No - Temporarily connect a test ECM. Use the "Engine Running Output Special Test" on Cat ET to check the ECM. If the problem is resolved with the test ECM, install the suspect ECM. If the problem returns with the suspect ECM, replace the ECM. Verify that the repair eliminates the problem. Stop.