Kubota KX080-4 Workshop Manual page 409

KX080-4, WSM
[C] Testing with a Circuit Tester
(a) AI pressure switch
connector
• If connectors (b) (c) are removed, the engine will crank but not start.
Further, "CAN comm error" and "fuel sensor error" are displayed on the meter panel.
1. Voltage check
[Measurement Conditions]
1. Disconnect the AI pressure switch connector.
2. Key switch: ON
3. Measure the voltage based on the table below.
Mea-
sure- Connector Name (+ terminal side)
ment
(1) AI pressure switch
(2) AI pressure switch
Regular: 12V
Irregular: Large discrepancy from 12V
2. Continuity check
[Measurement Conditions]
1. Key switch: OFF
2. Disconnect the connector to be tested.
3. Test the continuity based on the table below.
Mea-
sure- Connector Name (+ terminal side)
ment
(1) AI pressure switch
(2) AI pressure switch
(3) Engine (signal)
(4) Engine (signal)
Regular: Continuity
Irregular: No continuity
(b) Main (signal) connector
Pin No.
<1>
<1>
Pin No.
<1>
<2>
<3>
<7>
(c) Engine (signal) connector
Connector Name (- terminal side)
AI pressure switch
Body GND
Connector Name (- terminal side)
Main (signal)
Main (signal)
Main ECU
Main ECU
4-S78
ELECTRICAL SYSTEM
(d) Main ECU connector
RY9212148ELS0170US0
Pin No.
<2>
–
RY9212148ELS0171US0
Pin No.
<3>
<7>
<76>
<50>
RY9212148ELS0172US0
KiSC issued 08, 2015 A