Kubota KX080-4 Workshop Manual page 420

KX080-4, WSM
[B] Inspecting each Device Visually and Physically
1. Checking fuses
1. Check if the 5A ECU (+B) fuse is blown.
2. Causes when a break in wiring
[Test Conditions]
1. Key switch: OFF
2. Check whether the joint connector is disconnected.
3. Check whether the machine's ECU connector is disconnected.
(a) Joint connector
3. Causes when a short
[Test Conditions]
1. Key switch: OFF
2. The CAN connector wire is pinched against or touching the
body.
If the insulation is damaged, repair it properly and check the
ECU (main) again in the tester mode.
(a) CAN communication (2 wires)
1. Checking fuses
1. Check if the 30A ECU (CRS) slow blow fuse is blown.
2. Checking relays
1. Replace the engine ECU and condenser motor relays.
After replacing them, check for normal operation.
(a) Engine ECU relay
4-S89
ELECTRICAL SYSTEM
RY9212158ELS0008US0
RY9212148ELS0177US0
RY9212148ELS0129US0
RY9212148ELS0178US0
(b) Condenser motor relay
RY9212148ELS0179US0
KiSC issued 08, 2015 A