HARNESS AS 2832851 - Caterpillar

Illustration 1 g00698222
Schematic of the Engine Oil Level SwitchUse this procedure in order to troubleshoot the engine oil level switch under the conditions that are listed below:
The engine oil is at a normal level and the VIDS is warning the operator of a "LOW" engine oil condition.
The engine oil is below the lower limit and the VIDS is NOT warning the operator of the "LOW" engine oil condition.The possible causes of this failure are listed below:
The signal circuit in the machine harness is open.
The signal circuit is shorted to ground.
The ground circuit is open.
The switch has failed.
The VIDS ECM has failed.Test Step 1. VERIFY THE STATUS OF THE LEVEL SWITCH.
Turn the disconnect switch and the key start switch to the ON position.
Verify that the level switch does not report a low level, even though the level is low.Expected Result:The level switch does not report a low level, even though the level is low.Results:
OK - The level switch does not report a low level, even though the level is low. Proceed to test step 2.
NOT OK - The level switch reports a low level even when the level is normal. Proceed to test step 6.Test Step 2. CHECK THE SWITCH
The disconnect switch and the key start switch remain in the ON position.
On the VIDS keypad, press the "Gauge" key three times.
Then enter the parameter number 815 with the VIDS keypad. (This will display the status of the engine oil level on the message center.)
Verify that the status of the oil level switch is "OK".
Disconnect the engine oil level switch from the machine harness.Expected Result:The status of the engine oil level changes from "OK" to "LOW".Results:
OK - The status of the engine oil level changes from "OK" to "LOW". The switch has failed.Repair: Replace the switch. Stop.
NOT OK - The status of the engine oil level did not change. Proceed to test step 3.Test Step 3. CHECK THE GROUND CIRCUIT OF THE SWITCH
Turn the key start switch and the disconnect switch to the OFF position.
The engine oil level switch remains disconnected from the machine harness connector.
At the machine harness connector for the switch, measure the resistance between contact 2 (wire 200-BK) of the machine harness connector and frame ground.Expected Result:The resistance is less than 5 ohms. Results:
OK - The resistance is less than 5 ohms. The circuit is correct. Proceed to test step 4.
NOT OK - The resistance is greater than 5 ohms. The ground circuit is open.Repair: Repair the machine harness or replace the machine harness. Stop.Test Step 4. CHECK THE VIDS ECM
Turn the disconnect switch and the key start switch to the ON position.
At the machine harness connector for the switch, measure the voltage between contact 1 (wire 468-BU) and contact 2 (wire 200-BK) of the machine harness.Expected Result:The voltage is 8.0 1.0 DCV. Results:
OK - The voltage is 8.0 1.0 DCV. The voltage is correct. The ECM has failed.Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If