![](../../../img/35/AC502091AC00ENG.png)
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1.
caution |
Do not connect the battery
terminals in reverse as the wheel speed sensor
may be damaged.
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Use special tool extra fine probe MB992006 to
connect the circuit tester and measure current flown through
wheel speed sensor with wheel speed sensor separated from
the vehicle. Standard value: 5.9 - 8.4 mA
or 11.8 - 16.8 mA 2.If the
measurement value is outside the standard value, replace the
wheel speed sensor with a new one.
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![](../../../img/35/AC502101AC00ENG.png)
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1.Use special tool extra
fine probe MB992006 to connect the circuit tester and
measure the insulation resistance from terminals 1 and 2 to
the wheel speed sensor and body with the wheel speed sensor
separated from the vehicle. Standard value: 5
MΩ or more 2.If the insulation
resistance is outside the standard value, replace the wheel
speed sensor with a new one.
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