Measure The Sensor Terminal Voltage; Dtc Judgment - 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. Measure the Sensor Terminal Voltage

1. Move the key switch from the OFF to the ON position, and
measure the voltage between sensor terminals 1 and 2.
Factory
specification
OK
NG
(1) Terminal Power (+12 V)
(2) Terminal AFS-GND
(3) Terminal AFS

2. DTC Judgment

1. Place the key switch in the OFF position, and attach the
diagnosis tool to the CAN1 connector.
2. Operate the engine for 2 to 3 minutes with the engine in the idle
status.
3. Check whether the DTC is output or not.
Factory
specification
OK
NG
(a) CAN1 Connector
1-S152
(a) Terminal Layout
(b) Mass Air Flow (MAF) Sensor
Approx. 10 to 16 V
Go to "2. DTC Judgment".
Repair or replace the wiring harness, or replace the sensor
Either DTC is output.
Normal.
Replace the MAF Sensor or replace the ECU.
COMMON RAIL SYSTEM
(c) Intake Air Temperature
Sensor (Built-in MAF)
(d) ECU Connector 1
(A: 96 Pin)
9Y1200192CRS0678US0
(4) Terminal IATS
(5) Terminal IATS-GND
9Y1200192CRS0679US0
9Y1200192CRS0239US0
KiSC issued 05, 2012 A