Genie GS-2046 Service Manual page 152

Section 5 • Troubleshooting Flow Charts
Chart 16
Fault Code 02 -
ECM / Platform
Communication
Error
Be sure the circuit
breaker and fuse are
not tripped or blown.
Be sure the batteries
are fully charged and
properly connected.
5 - 26
Open the platform
control box. With the key
switch turned to platform
0V
controls and both
Emergency Stop buttons
pulled out to the
ON
position, check for
voltage on the positive
terminal 1 of the
Emergency Stop button
P2 at the platform
controls.
20V or more
With the negative lead of
0V
an ohmmeter connected
to the negative terminal
of the battery B5, check
for voltage at terminal 1
of the voltage regulator
on the platform controls
circuit board U3.
20V or more
Continued on
page 28.
Genie GS-2046 and GS-2646 and GS-3246
Before serial number
25142: Check for
0V
voltage on terminal B2
at the ECM U5.
After serial number
25141: Check for
voltage on terminal 30 at
relay CR48.
20V or more
Disconnect the control
0V
cable quick disconnect
plug at the ECM and
check for voltage at
terminal C of the quick
disconnect plug.
20V or more
Connect the control
0V
cable quick disconnect
plug at the ECM.
Disconnect the control
cable quick disconnect
plug at the platform and
check for voltage at
terminal C of the quick
disconnect plug.
20V or more
Replace the coil cord
assembly OR replace
the platform controls.
Repair or replace the
wire between P2 and
U3.
June 2003
REV A
Before serial number
25142: Replace U5.
After serial number
25141: Troubleshoot
CR48.
Repair or replace the
quick disconnect plug
OR replace the harness
pigtail.
Repair or replace the
quick disconnect plug
OR replace the control
cable.
Part No. 72972