816F Series 2 Landfill Compactor, 815F Series 2 Soil Compactor and 814F Series 2 Wheel Dozer Caterpillar

Note: The fuse is located in the machine's fuse panel.

1. Check the fuse for an open.

Expected Result:

The fuse is NOT open.

Results:

• OK - The fuse is not open. Proceed to test step 3.

• NOT OK - The fuse is open. Proceed to test step 2.

Test Step 2. CHECK THE HARNESS

1. Turn the key start switch to the OFF position.

2. Disconnect the machine harness from the shift lever transmission control.

3. Take resistance measurements at the control module's connector. Measure the resistance between contact 1 and contact 2.

Expected Result:

The resistance is greater than 10,000 ohms.

Results:

• OK - The resistance is greater than 10,000 ohms. The problem does not exist at this time. The initial problem was probably caused by a poor electrical connection or a short at one of the harness connectors that was disconnected and reconnected. Resume normal machine operation. Repeat this test step in order to verify that the resistance is correct.STOP

• NOT OK - The resistance is less than 10,000 ohms. The battery wire has a short to ground.

  Repair: Replace the fuse for the shift lever transmission control and repair or replace the harness. Repeat this test step in order to verify that the problem has been corrected. If the problem is not corrected, replace the shift lever transmission control. See Testing and Adjusting, "Transmission Control (Shift Lever) - Replace".

  STOP

Test Step 3. VERIFY THE BATTERY VOLTAGE AT THE SHIFT LEVER TRANSMISSION CONTROL

1. The battery voltage is measured at the battery posts. The voltage at the shift lever transmission control must not vary from the battery voltage more than 0.5 VDC.

2. Turn the key start switch to the ON position.

3. Use the 7x-1710 Multimeter Probe in order to measure the voltage from contact 1 and contact 2.

Expected Result:

The voltage at the shift lever transmission control does not vary from the battery voltage more than 0.5 VDC.

Results:

• OK - The voltage at the shift lever transmission control does not vary from the battery voltage more than 0.5 VDC. The system voltage is correct.

  Repair: The problem does not exist at this time. The initial problem was probably caused by a poor electrical connection or a short at one of the harness connectors that was disconnected and reconnected. Resume normal machine operation.

  STOP

• NOT OK - The voltage at the shift lever transmission control varies from the battery voltage more than 0.5 VDC. The system voltage is NOT correct. The problem may be in the wiring between the shift lever transmission control and the fuse. The problem may also be in the wiring between the shift lever transmission control and the ground stud.

  Repair: Repair the harness or replace the harness.

  STOP