Illustration 1 | g01043498 |
Schematic of the body up/tailgate down indicator (AD55 machine) |
Illustration 2 | g01043499 |
Schematic of the body up/tailgate down indicator (AD30 machine) |
Test Step 1. CHECK HARNESS FOR A SHORT TO FRAME GROUND
- Disconnect the machine harness connectors J1 and J2 from the Power Train/Chassis Electronic Control Module (ECM).
- Disconnect the indicator from the machine harness.
- At the machine harness connector J2 for the ECM, measure the resistance from J2-22 (wire H430-PU(Purple)) to all possible sources of frame ground.
Expected Result:
The resistance for each measurement should be greater than 5 ohms.
Results:
- OK - The machine harness is greater than 5 ohms. Proceed to Test Step 2.
- NOT OK - The machine harness is less than 5 ohms.
Repair: Repair the machine harness or replace the machine harness.
STOP
Test Step 2. CHECK IF THE PROBLEM REMAINS
- Inspect the contacts of the harness connectors and clean the harness connectors.
- Reconnect all the harness connectors.
- Turn the battery disconnect switch and the key start switch to the ON position.
- Operate the machine.
- Check to see if the fault still occurs.
Expected Result:
The fault is present.
Results:
- YES - The fault is present. The fault has not been corrected. The ECM may have failed.
Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If the cause of the fault is not found, replace the ECM. Refer to Systems operation, Troubleshooting, Testing and Adjusting, "Electronic Control Module (ECM) - Replace" for the machine that is being serviced.
STOP
- NO - The fault is no longer present. The fault does not exist at this time.
Repair: The initial fault 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