Checking Egr System; Checking Air Flow Sensor - Kubota D1803-CR-E4 Workshop Manual

4. ENGINE
3. Measure the resistance between the terminals on
the sensor side.
Service specification
Temperature
20 ℃
68 ℉
40 ℃
104 ℉
60 ℃
140 ℉
80 ℃
176 ℉
100 ℃
212 ℉
NOTE
• If the measurement is out of the service
specifications,
temperature sensor (1).
(1) Coolant temperature sensor

4.26 Checking EGR system

Tools required
• Circuit tester
1. Disconnect the EGR valve connector.
2. Check of battery line of motor in EGR valve.
3. Measure the voltage between terminal power (4)
and terminal ground (3) at key ON status.
Terminal power (4)
Service specifi-
and terminal
cation
ground (3)
4-110
Resistance
Approx. 2.5 kΩ
Approx. 1.2 kΩ
Approx. 0.58 kΩ
Approx. 0.32 kΩ
Approx. 0.18 kΩ
replace the coolant
9 to 16 V
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
(1) Terminal CAN1-H
(2) Terminal CAN1-L
(3) Terminal ground

4.27 Checking air flow sensor

Tools required
• Circuit tester
1. Turn the key switch OFF.
2. Remove the connector from the sensor side.
SERVICING
4. Checking and adjusting
(4) Terminal power (+12 V)
(a) Pin assignment
KiSC issued 12, 2018 A