Mobile Generator ECM/Sensor Troubleshooting
wc_tx000723gb.fm 47
5.2 Checking Outgoing Power From the ECM
Prerequisites
Fully-charged (12+ Volts) battery
At least 9.8VDC incoing power to ECM on red wires #18 and #53
Procedure
Follow the procedure below to check the outgoing power from the ECM.
1. Open the control panel and locate the ECM..
2. Place the START/RUN switch in the ON position.
3. Check the voltage between pin 1 plug 2 (yellow wire #63) and ground.
Is at least 9.8V measured?
4. Check the voltage between pin 2 plug 2 (violet wire #64) and ground.
Is at least 9.8V measured?
Outgoing power from the ECM has now been checked.
Yes ____ No ____ Your reading
Coninue The ECM has failed. Call Wacker Neuson
Service.
Yes ____ No ____ Your reading
Outgoing power from the
ECM is OK.
The ECM has failed.
Call Wacker Neuson
Service.
wc_gr004001
Plug 2
V 64
Y 63
ECM
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