74
T500 9015504 01-2018
TROUBLESHOOTING
SE (SEVERE ENVIRONMENT) ON
Detergent Tank
level Sw.
28/GRY
MTR
Detergent Pump (Option)
(Pulsed 5 Volts - 20 Volts Continuous)
MACHINE CONTROL
MODULE
B+
KSI
(KEY SWITCH INTERLOCK)
DET_PUMP
VALVE OUT
DIGITAL_GND1
GND_1
DIGITAL_GND3
Unswit
ched B+
Batt
er
y (-)
Gr
ound
1/RED
S
wit
ched B+
Aux Contactor
Relay
14/YEL
46/BLU
1/RED
J6
J8-7
J8-6
J12-8
J7-8
J6-10
13/BLK
SCB_HD_UP
(CLOSED = HEAD DOWN)
J6-5
B-
J1
13/BLK
13/BLK
22/BRN
32/BRN
DET_LEVEL
(Open = Empty)
J6-4
POT_LOW
WIPER
65/GRN
1
2
3
62/BRN
POT_+5VDC
5K Ω Detergent
Metering Pot.
SE (Severe
Environment)
Detergent
Pump
(Option)
Enabled
• Head Lowered - One Step Button
• Severe Environment On
(30 seconds or continuous )
• Fwd/Rev Throttle Command or Bail
activated
• Detergent Tank Not Empty
Disabled
Operational Matrix:
• Head Raised - One Step Button
• Solution Control OFF
• Neutral - Ready State or bail
released
• Detergent Tank Empty
• Low Battery Voltage
• Fault
• Battery Charger ON Interlock
Low (1 LED)
Med (2 LEDs)
High (3 LEDs)
0%
23%
48%
66%
ON TIME % PERIOD 2.5 SEC
VCC1
J12-11
VCC2
J12-12
PUMP
J12-8
MTR
ec-H2O/Fast PUMP
46/BLU
46/BL
U
Battery Po
Battery Negative -
J7-12
J7-13
J7-14
63/ORA
13/BLK
EC-H2O MODULE
CAN+
CAN-
J12-5
J12-6
2
1
46/BL
U
46/BLU
46/BLU
52/BRN
52/BRN
.01MF
52/BRN
J12-2
J12-3
YEL
GRN
CAN-bus +
CAN-bus -
46/BL
U
FU1
70A
CB2
10A
Summary of Contents for t500
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Page 55: ...55 T500 9015504 01 2018 TROUBLESHOOTING ...
Page 89: ...89 T500 9015504 01 2018 SERVICE 9 Cycle the key switch to save selections ...
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