![](../../../img/17/ACF00151AC00ENG.png)
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1.Disconnect the vacuum
hoses from the EGR cooler bypass control solenoid
valve. 2.Disconnect the harness
connector.
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![](../../../img/17/AK102947AC00ENG.png)
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3.Use jumper leads to
connect the solenoid valve terminal and the battery
terminals. 4.Observe whether the jumper lead
should be connected or disconnected to/from the
battery (-) terminal, and whether the hand vacuum pump
should be installed or not, and then apply negative pressure
to check the air-tightness.
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Jumper
lead
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A nipple
condition
|
B nipple
condition
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Normal
condition
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Connected
|
Install a hand vacuum
pump
|
Open
|
Negative pressure
leaks
|
Closed
|
Negative pressure
maintained
|
Disconnected
|
Install a hand vacuum
pump
|
Open
|
Negative pressure
maintained
|
Open
|
Install a hand vacuum
pump
|
Negative pressure
leaks
|
|
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![](../../../img/17/AK802416AA00ENG.png)
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5.Measure the resistance
between terminal No. 1 and No. 2. Standard
value: 29 - 35 Ω (at
20°C) 6.Replace the solenoid if
airtightness or resistance is out of specification.
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