Book: 23227143 (8-24-2010) Rev CPage69
Engine Start Circuit
Circuit Description:
The WEDGE controls engine starter engagement using a 24 VDC input from the
ignition switch (S1) and a 24 VDC output to the starter relay coil (K1). The
WEDGE provides starter protection by turning off the output to K1 relay coil when
engine speed reaches 600 RPM even if the operator is still holding the ignition
switch in the start position. The WEDGE prevents cranking if a SHUTDOWN
code is active.
Component Location:
K1 relay is located on a bracket inside the lift bail. S1 ignition switch is located on
the control panel.
Troubleshooting Steps If Starter Does Not Engage During Crank
Action Result
Step 1:
Check display for fault codes.
Clear fault codes by following
instructions in this manual
Step 2:
Check F1 fuse.
Replace fuse if needed
Step 3:
Check all harness connections throughout engine
start circuit.
Repair harness as needed
Step 4:
Check battery voltage.
Replace batteries if needed
Step 5:
Hold the ignition switch (S1) in the “Start” position.
Using a multimeter, measure the voltage at:
1. Ignition switch (S1-C).
2. WEDGE controller connector (P1-23).
3. WEDGE controller connector (P1-28).
4. Starter relay (K1-A).
5. Starter relay (K1-1).
6. Starter relay (K1-2).
7. Engine starter (B1-S).
Voltage measured should be 24
VDC
If not, replace S1 ignition switch
If not, replace WEDGE
If not, replace K1 relay
If 24 VDC is measured at B1-S,
replace starter
To Next Page
Loading...
