Electrical System; General Information; Fuse And Relay/Component Identification - Jacobsen AR530 Operation And Maintenance Manual

8 ELECTRICAL SYSTEM

8.1

GENERAL INFORMATION

8Electrical System
Always turn the ignition switch to the off position and disconnect the negative (BLACK) battery cable before you
inspect or service the electrical system.
General precautions to decrease electrical problems are -
• Make sure that all the connections are clean and correctly fastened.
• Check the interlock system and fuses 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 engine, seat and armrest wire harnesses are securely connected to the mower wire 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 Mower Control Units (MCU) and the visual display. There are
CAN diagnostic connectors located under the armrest control panel and under the hood on the left side of the engine.
There are fifteen fuses and four relays that are used to protect the mower circuits. The mini/ATO fuses and relays are
located under the mower hood, on the left side of the engine. The 60A maxi fuse is found in the positive battery cable
near the alternator.
8.2

FUSE AND RELAY/COMPONENT IDENTIFICATION ______________________________

F12
F4 F13
K3 K1
K4
F3 F14
F1
F5 F11
F6
F8 F10
F7
K2
F2
F9
Relays
Relay
en-80
FUSES
Fuse Type
F1 ATO
F2 ATO
F3 ATO
F4 Mini
F5 ATO
F6 ATO
F7 ATO
F8 ATO
F9 ATO
F10* ATO
F11 ATO
F12 Mini
F13 Mini
F14 ATO
F15 Maxi
Rating
K1 Micro Main Relay
K2 40A Glow Plug Relay
K3 Micro Start Relay
K4 Micro Light Relay
!
CAUTION
FUSE IDENTIFICATION
Rating Protected Circuits
10A ECU Power
25A Main Relay Load Circuit
5A Start Signal
5A EGR
15A Premium Seat Compressor / Armrest
20A MCU Power
25A MCU Relay Power
20A MCU CPU Power
40A Glow Plug Relay
20A Start Relay
20A Work Lights
5A Not Used
5A T4F Main Relay Coil
10A 12V Accessory Outlet
60A Alternator Output (Located in Positive Battery Cable)
Circuits