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QUICKIE S-11 SERVICE MANUAL
PAGE 5
2005SUNRISE MEDICAL
Section 3
Understanding VSI Controller Diagnostics Codes
Test Left Motor Open
Check that the batteries are fully charged and in good
condition; and check all cables and connections. Check
the connections to the left motor, look for a loose or dam-
aged connector. Remove the 9-pin Beau plug and check
the resistance across pin 3 and pin 4 as shown in (figure
A3.2.1). If the meter reads between 0 to 1.5 ohms, then
replace the controller.
Otherwise, check both brushes on the left motor. (Refer to
Section 4 Step 9 of this Service Manual for easiest access).
Ensure that the brushes are not excessively worn, (replace
as required). Top access for Motor brush shown in (figure
A3.2.2)(requires shroud removal).
Use the meter to check the resistance across the two bot-
tom contacts (thicker wires) on the 4-pin motor connector
as shown in (figure A3.2.3). If the meter reads between 0
to 1.5 ohms, then replace the main harness. If none of the
above corrects the problem, replace the left motor.
3.2 Two Bars - Left Motor Disconnected
The left hand motor has a bad connection. Check the connections to the left hand motor.
3.1 One Bar - Low Battery Voltage
This code could indicate discharged batteries, failed batteries, or poor battery connections. Begin by recharging the bat-
teries and then refer to Section 1 to check batteries and connections.
A3.2.1
A3.2.2
A3.2.3
1 3
5
7
2
4
6 8
9
If the meter reads between 0 to 1.5 ohms, then replace the controller.
If the meter reads between 0 to 1.5 ohms, then replace the main harness.
If none of the above corrects the problem, replace the left motor.
OFF
1000
200
20
2000m
200m
20M
2000K
200K
20K
2000
200
10A
200m
20m
2000u
200u
200
750
V AC
V DC
OHM
A DC
DIGITAL MULTIMETER
V mA
COM
10A
OFF
1000
200
20
2000m
200m
20M
2000K
200K
20K
2000
200
10A
200m
20m
2000u
200u
200
750
V AC
V DC
OHM
A DC
DIGITAL MULTIMETER
V mA
COM
10A