Hitachi IJ RX2 Service Manual page 191

6.2.9 Makeup Low
Makeup Low
Open the maintenance cover.
Is the makeup
reservoir charged
with the makeup?
Yes
Turn OFF the power.
Is the sensor connector
disconnected?
(See the overall wiring
diagram.)
No
Is the EZJ126 board CN13 or
EZJ132 board CN1, 3 connector
disconnected?
No
Disconnect the connectors, then
reconnect them (3 connectors).
Is the fault cleared by
power-on reset?
Yes
END
No
No
Yes
Yes
Connect the connector.
No
Is the connection harness
conducting?
OK
Replace the sensor.
Is the fault cleared by
Yes
power-on reset?
No
Replace the EZJ126 board.
6-12
Uncap the makeup
reservoir and add the
makeup.
Can the abnormality
be cleared by pressing
the Clear key?
Yes
END
Connect the sensor
connector.
END
NG
Replace the connection harness.