ECM/Sensor Troubleshooting Mobile Generator
wc_tx000723gb.fm 50
5.4 Fuel Sender Failure and Low Fuel Fault
Prerequisites
Fuel in fuel tank
Procedure
Follow the procedure below to check the ECM and fuel sender.
1. Open the large hinged panel and locate the fuel sender.
2. Disconnect white/violet (W/V) wire #62 from the fuel sender.
3. Place the START/RUN switch in the ON position.
4. Measure the voltage between W/V wire #62 and ground.
Is at least 4.8 VDC measured?
5. Open the control panel and locate the ECM.
6. Place the START/RUN switch in the ON position.
7. Measure the voltage between ECM plug 1 pin 12 (W/V wire #62) and ground.
Is at least 4.8 VDC measured?
8. Measure the resistance between the fuel sender and ground.
9. Find the resistance measured in the chart below.
Does the resistance measured reflect the actual fuel level in the tank?
10.Reconnect W/V wire #62.
The ECM and fuel sender have now been checked.
Yes____ No____ Your reading
Go to step 8. Continue
Yes____ No____ Your reading
Repair W/V wire #62; then
continue.
The ECM has failed.
Call Wacker Neuson Service.
Yes____ No____
The fuel sender is OK; the ECM has failed.
Call Wacker Neuson Service.
The fuel sender has failed; replace it.
wc_gr003934
Fuel
sender
Plug 1
W/V 62
W/V 62
ECM
To Next Page
Loading...
Need help?
General
