Check The Intake Air Temperature Sensor Signals - Kubota V3800-CR-TE4 Diagnosis Manual

V3800-CR-TE4,V3800-CR-TIE4, DM
(1) Terminal Power (+12 V)
(2) Terminal AFS-GND
(3) Terminal AFS
(4) Terminal IATS
(5) Terminal IATS-GND

1. Check the Intake AIr Temperature Sensor Signals

1. Place the key switch in the ON position, and check the "Intake
air temperature" and "Intake air temperature sensor output
voltage" on the diagnosis tool data monitor.
Actual intake air
temperature
20 °C (68 °F)
40 °C (104 °F)
60 °C (140 °F)
80 °C (176 °F)
OK
NG
(a) CAN1 Connector
1-S127
(a) Terminal Layout
(b) Mass Air Flow (MAF) Sensor
Factory specification
Intake air temperature
20 °C (68 °F)
40 °C (104 °F)
60 °C (140 °F)
80 °C (176 °F)
Clear the DTC and check whether it is output again or not.
OK Normal.
NG Replace the ECU.
Go to "2. Measure the Resistance Between Terminals".
COMMON RAIL SYSTEM
(c) Intake Air Temperature
(Built-in MAF)
(d) ECU Connector 1
(A: 96 Pin)
9Y1200192CRS0667US0
Output voltage
Approx. 3.1 V
Approx. 2.2 V
Approx. 1.4 V
Approx. 0.9 V
9Y1200192CRS0198US0
KiSC issued 05, 2012 A