SK-8402
取扱説明書（英文）
_P37
SIMULATION TEST
37
Disconnection check for the O2 sensor heater
Disconnection check for the O2 sensor heater is
possible by simulation test.
※
Only for the heater of zirconia O2 sensor,
①
Confirm that the engine is completely stopped.
(Turn off the engine and electric components)
②
Detach connecting couplers of O2 sensor and ECU.
③
Connect two female connecting terminals (yellow) to
heater cables of connecting coupler in O2 sensor side.
④
Connect red and black L-shaped plugs of the test lead
to red (
＋
) and black (
−
) input terminals respectively.
Red test lead L-shaped plug
Black test lead L-shaped plug
⑤
Connect two yellow check harness connecting plugs
to the red and black straight plugs respectively.
Red test lead straight plug
Yellow check harness
connecting plug
Black test lead straight plug
Yellow check harness
connecting plug
⑥
Press POWER Key for 1 second or more to turn on
the instrument. It enters stand-by mode for cable
connection check.
⑦
Press SEL Key for 1 second or more to enter
simulation test mode for zirconia O2 sensor.
lights up on LCD.
⑧
Press TEST Key for 1 second or less to output RICH
signal.
S
※
When the engine was running until just before
connection checking of the O2 sensor heater, test
it after waiting until it is cooled down. Because the
resistance of the heater is increased due to the
high temperature.
