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SK-8402
取扱説明書(英文)
_P30
NORMAL TEST
30
⑨
Keep the engine speed at approx. 2,500rpm. When
measuring the car without tachometer, estimate the
engine speed by its sound. Bar graph becomes stable
and shows the deterioration level of O2 sensor after
keeping the engine speed for 30 seconds or more.
※
SK-8402 cannot display the deterioration
levels of A/F (air-fuel ratio) sensor and rear O2
sensor that is equipped behind the catalyst to
check the condition of 3-way catalyst.
※
When measuring the above types of O2
sensors, bar graph blinks to alert the user. If
the bar graph keeps blinking during the
normal test, confirm the sensor equipped on
vehicle is not A/F (air-fuel ratio) sensor or not
measuring the rear O2 sensor.
When measuring the O2 sensor that is
equipped on the manifold side, bar graph
displays the actual test result.
mV
RICH
TEST
Z
APO
GOOD
CHECK
BAD
mV
RICH
TEST
Z
APO
GOOD
CHECK
BAD
mV
RICH
TEST
Z
APO
GOOD
CHECK
BAD
Examples of test results on bar graph
(No problem)
Replacement
recommended
Replacement
required
GOOD
CHECK
BAD
(
)
(
)