Tennant EC-H2O T12, Service Information Manual, Page: 164 / 178

5-32
T12 Service Information 9009917 (12-12)
SERVICE
4 . key on . backprobe the throttle sensor output
terminals b and d using a voltmeter as shown below .
The voltmeter should display 0-5 volts proportional
to 0-100% propel pedal movement .
A B C D
A B C D
TBS003
VDC
VDC
5 . See “propel diagnostic mode” in the TroubLe
ShooTInG section . The voltage in step 3 should
match the LCd displayed voltage in propel diagnostic
mode .
+ - + - + - + - + - + -
Scrub Head
Down
Enabled
• 1-STEP Scrub ON
• Squeegee/Vac ON
• 1-STEP Scrub OFF
• Squeegee/Vac OFF
• Recovery Tank Full
• Low Batt Voltage
• Load Current Fault
Disabled
Operational Matrix:
Scrub Head
Down
Enabled
• 1-STEP Scrub ON
• Fwd/Rev Propel
• 1-STEP Scrub OFF
• Neutral-Ready State
• Recovery Tank Full
• Solution Tank Empty
• Low Batt Voltage
• Load Current Fault
Disabled
Operational Matrix:
Tennant Quantum
UI ver1.0
Tennant Quantum
UI ver X.X
T16
Control
Board
6 Volt
Key Switch
IGN
15
ACC
30
BATT
Switched B+
From Buss Bar
75
50 Start
S-2
E-Stop
Switch
S-3
Charger
Interlock
ST
M1B
M1A
J7-1
B+(Control)
B+
B-
Battery Po
Battery Negative -
CAN +12V
J2-1 J2-2 J2-3 J2-4
RED #1 RED #2 BLK #2 BLK #1
CAN +
CAN -
CAN GR
OUND
D-4
D-2
D-3
CB1
2.5A
FU2
100A
6 Volt 6 Volt 6 Volt 6 Volt 6 Volt
CB2
2.5A
1/RED
13/BLK
6/BLU 7/PUR
Cable
Shield
Instrument Panel Assembly
Cable
3/OR
A
8/GR
Y
4/Y
EL
Cable t
o Gr
ound S
tand O
ff
5/GRN
10/T
AN
2/BRN
Cable 1. Turn Key Off.
CONFIG MODE
SELF TEST
MANUAL MODE
INPUT DISPLAY
PROPEL DIAG MODE
P1:Curtis Online/
Error
P2:Throttle
XXXX.X V
P2:Throttle
XXXX.X V
P3:Brake Pedal
On/Off
P4:Direction Fwd/
Rev
P5:Speed
XXXX.X Mph
P6:Curtis Temp
XXXX.XC XXXX.XF
P7:Motor Temp
XXXX.XC XXXX.XF
P8:PropelCurrent
XXXX.X A
TBS004
6 . key on . backprobe the brake sensor terminals
C and d using a voltmeter as shown below . The volt-
meter should display 5 volts when the brake pedal is
activated .
A B C D
A B C D
TBS006
VDC
VDC
7 . See “propel diagnostic mode” in the TroubLe
ShooTInG section . The change in voltage in step 5
should correspond to a brake pedal “on” or “off” LCd
message .
+ - + - + - + - + - + -
Scrub Head
Down
Enabled
• 1-STEP Scrub ON
• Squeegee/Vac ON
• 1-STEP Scrub OFF
• Squeegee/Vac OFF
• Recovery Tank Full
• Low Batt Voltage
• Load Current Fault
Disabled
Operational Matrix:
Scrub Head
Down
Enabled
• 1-STEP Scrub ON
• Fwd/Rev Propel
• 1-STEP Scrub OFF
• Neutral-Ready State
• Recovery Tank Full
• Solution Tank Empty
• Low Batt Voltage
• Load Current Fault
Disabled
Operational Matrix:
Tennant Quantum
UI ver1.0
Tennant Quantum
UI ver X.X
T16
Control
Board
6 Volt
Key Switch
IGN
15
ACC
30
BATT
Switched B+
From Buss Bar
75
50 Start
S-2
E-Stop
Switch
S-3
Charger
Interlock
ST
M1B
M1A
J7-1
B+(Control)
B+
B-
Battery Po
Battery Negative -
CAN +12V
J2-1 J2-2 J2-3 J2-4
RED #1 RED #2 BLK #2 BLK #1
CAN +
CAN -
CAN GR
OUND
D-4
D-2
D-3
CB1
2.5A
FU2
100A
6 Volt 6 Volt 6 Volt 6 Volt 6 Volt
CB2
2.5A
1/RED
13/BLK
6/BLU 7/PUR
Cable
Shield
Instrument Panel Assembly
Cable
3/OR
A
8/GR
Y
4/Y
EL
Cable t
o Gr
ound S
tand O
ff
5/GRN
10/T
AN
2/BRN
Cable
1. Turn Key Off.
CONFIG MODE
SELF TEST
MANUAL MODE
INPUT DISPLAY
PROPEL DIAG MODE
P1:Curtis Online/
Error
P2:Throttle
XXXX.X V
P3:Brake Pedal
On/Off
P4:Direction Fwd/
Rev
P5:Speed
XXXX.X Mph
P6:Curtis Temp
XXXX.XC XXXX.XF
P7:Motor Temp
XXXX.XC XXXX.XF
P8:PropelCurrent
XXXX.X A
TBS005