Kubota 07-CR-E5 Manual page 177

07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
2. Measure the Resistance Between Terminals
1. Place the key switch in the OFF position, unplug the engine
ECU wiring harness connector from the socket, and measure
the resistance between terminals V45 and V49 of the connector.
Service specification
Temperature
20 °C (68 °F)
40 °C (104 °F)
60 °C (140 °F)
80 °C (176 °F)
OK Go to "4. Measure the Engine ECU Terminal Voltage".
NG Go to "3. Check the sensor".
3. Check the Sensor
1. Turn the key switch OFF, remove the connector from the sensor
side and measure the resistance between the terminals (4) and
(5) on the sensor side.
Service specification
Temperature
20 °C (68 °F)
40 °C (104 °F)
60 °C (140 °F)
80 °C (176 °F)
OK Wiring harness open circuit or connector fault → Check and replace.
NG Intake air temperature sensor fault → Replace the air flow sensor.
(1) Terminal Power (+12 V)
(2) Terminal Ground
(3) Terminal AFS
4. Measure the Engine ECU Terminal Voltage
1. Plug the engine ECU wiring harness connector into socket
again, unplug the sensor connector, and measure the voltage
between engine ECU terminals V45 and V49 at the engine ECU
side.
Service
Approx. 5 V
specification
OK The engine ECU connector is faulty or its wiring harness is shorted.
NG Confirm by using other sensors that there is no ground short malfunction
before replacing the engine ECU.
1-S139
COMMON RAIL SYSTEM
Resistance
Approx. 2.43 kΩ
Approx. 1.15 kΩ
Approx. 0.587 kΩ
Approx. 0.321 kΩ
9Y3200007CRS0176US0
Resistance
Approx. 2.43 kΩ
Approx. 1.15 kΩ
Approx. 0.587 kΩ
Approx. 0.321 kΩ
(4) Terminal IATS
(5) Terminal A-GND 10
9Y3200007CRS0177US0
9Y3200007CRS0178US0
KiSC issued 03, 2022 A