![](../../../img/17/AK802306AC00ENG.png)
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1.Start up the engine and
run on at idle speed to allow the engine coolant temperature
to
reach at least 70°C. 2.When turning the
ignition switch to the LOCK (OFF) position and stopping the
engine,
check that the operating sound "clicking noise" is heard
from the exhaust gas recirculation valve
three times. 3.If the operating sound is not
heard, check the drive circuit of the DC motor.
note |
If the circuit is normal and
the operating sound is not heard, it could
possibly be caused
by the failed exhaust gas recirculation.
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1.Remove the exhaust gas
recirculation valve.
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![](../../../img/17/AK701971AB00ENG.png)
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2.Connect the terminal
(+) of the sensor power supply (5 V) with the terminal
No.
3 of the exhaust gas recirculation valve connector, and
connect the terminal (-) of
the sensor power supply (5 V) with the terminal No.
2. 3.A tester is to be connected between the
terminal No.1 and No. 2. 4.Connect the terminal
(+) of the power supply with the terminal No. 6 of the
exhaust gas recirculation valve connector, and connect the
terminal (-) of the power
supply with the terminal No. 4. Confirm the exhaust gas
recirculation valve is opened.
note |
At this time, the power supply
voltage is to be 5 V. When the valve is not
opened, increase
the voltage 1 V by 1 V. For each voltage,
current is to be applied within 5 seconds. Once
the
valve is opened, the voltage is not to be
increased any more.
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5.Confirm the voltage is changed between the
terminal No. 1 and No. 2 together with
the exhaust gas recirculation valve opening
movement. 6.By the voltage changed, the DC is
recognised as being normal. 7.Use a new gasket and
tighten the installation bolt to the tightening
torque. Tightening torque: 48 ± 6
N·m
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1.Remove the exhaust gas
recirculation valve and check that the exhaust gas
recirculation
valve is not stuck or clogged with carbon deposits. Use a
wire brush to clean the valve if necessary.
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2.Using a new gasket,
install the exhaust gas recirculation valve by tightening
its
mounting bolts to the specified
torque. Tightening torque: 48 ± 6
N·m
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