MAINTENANCE 9
58
9.20 ELECTRICAL SYSTEM____________________________________________________________
General precautions to decrease electrical problems are -
• Make sure that all the connections are clean and correctly fastened.
• Check the interlock system, fuses and circuit breakers at normal intervals. If the interlock system does not
operate correctly and you can not correct the problem, contact an authorized Jacobsen Dealer.
• Keep the wiring harness away from hot surfaces and moving parts.
• Make sure the seat switch wiring harness is connected to the mower wiring harness.
• Check the battery and the alternator.
• Do not wash or pressure spray around electrical connections and components.
The electrical system is monitored and controlled by the controller found behind the operator compartment. The
controller has 38 light emitting diodes (LED) that can help to correct electrical system problems.
A circuit breaker, six fuses and three relays found on or near the controller are used to protect the mower circuits.
CAUTION
Always turn the ignition switch to the off position and remove the negative (BLACK) battery cable before you inspect
or service the electrical system.
NOTICE
For factory help with controller problems, give the hardware revision and software version found on the controller.
The replacement controllers with higher revision levels will be compatible.
1-5 POWER - LIGHTS
1-3 POWER - IGNITION
1-1 START RELAY/ECU
2-5 HYD OIL LEVEL LT
2-6 TRACTION CTRL LT
2-4 PARK BRAKE LT
2-3 BRAKE SOL
2-2 RW LIFT SOL
2-1 WG MOW MAIN SOL
2-11 LW LIFT SOL
2-12 WG LIFT MAIN SOL
2-10 LW MOW SOL
2-9 RW MOW SOL
2-8 LOWER 5 GANG SOL
2-7 ECU IGN
3-6 HORN
3-5 LIFT 5 GANG SOL
3-4 MOW 5 GANG SOL
4-6 HYD FILTER LT
4-5 ECU NEUTRAL
3-1 ECU MAIN RELAY
3-10 MOW ENBL SW
3-11 KEY START
3-9 SEAT SW
3-8 ENG OIL SW
3-7 ENG WATER TEMP
4-4 LW ENABLE SW
4-3 TRACTION CTRL SW
4-2 RW ENABLE SW
4-1 NEUTRAL SW
4-10 JOYST LOWER
4-11 JOYST LIFT
4-7 RW LIMIT SW
4-8 LW LIMIT SW
4-9 BRAKE SW
4-12 HYD OIL LEVEL SW
COMM STATUS
POWER STATUS
FUSES
20 AMPS MAX
POWER INPUT 1
POWER INPUT 2
OUTPUTS
INPUTS
J1 J2 J3 J4
20
20
F6
F7
F1
CB1
F2 F3
F4
JACOBSEN
4270813
MTI500819
REV X2
DATE YYWW
SOFTWARE
9585$
RoHS
Compliant
10
25
5
5
CR1CR3
CR2
CB1 - 50 Amp Circuit Breaker CR1 - Main Relay
CR2 - Glow Plug Relay
CR3 - Starter Relay
F1 - 10 Amp Fuse - ECU +12V
F2 - 25 Amp Fuse - Main Relay
F3 - 5 Amp Fuse - ECU Start
F4 - 5 Amp Fuse - EGR
F6 - 20 Amp Fuse - Ignition
F7 - 20 Amp Fuse - Lights
Software
Version
Hardware
Revision
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