ECM/Sensor Troubleshooting Mobile Generator
wc_tx000723gb.fm 44
5 ECM/Sensor Troubleshooting
5.1 Checking Power to the ECM
Prerequisites
Fully-charged (12+ Volts) battery
Procedure
Follow the procedure below to check the fuses.
1. Locate the 10A and 30A fuses near the John Deere Engine Control Unit (ECU).
2. Check the condition of the 10A fuse.
Is the fuse OK?
3. Check the condition of the 30A fuse.
Is the fuse OK?
4. Check the condition of
the ECM 10A fuse.
Is the fuse OK?
This procedure continues on the next page.
Yes ____ No ____
Continue Replace the fuse with one of the same size and rating.
Yes ____ No ____
Continue Check the function of the main circuit breaker. The shunt of
the main circuit breaker is most likely the cause of a fuse failure.
See section 5.10 Checking the Main Circuit Breaker.
Yes____ No____
The fuses are OK. Replace the fuse with one of the same size and rating.
wc_gr003735
30A
10A
wc_gr003913
10A
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