Q45 V8-4.5L (VK45DE) (2002)
3. Check the following with engine speed held at 2,000 rpm constant under no load.
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The voltage fluctuates between 0 to 0.3 V and 0.6 to 1.0 V more than 5 times within 10 seconds.
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The maximum voltage is over 0.6 V at least one time.
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The minimum voltage is below 0.3 V at least one time.
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The voltage never exceeds 1.0 V.
1 time: 0 - 0.3V -> 0.6 - 1.0V -> 0 - 0.3 V
2 times: 0 - 0.3V -> 0.6 - 1.0V -> 0 - 0.3V -> 0.6 - 1.0 V
CAUTION:
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Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete
floor; use a new one.
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Before installing new heated oxygen sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or
J-43897-12 and approved anti-seize lubricant.
HEATED OXYGEN SENSOR 1 HEATER
1. Check resistance between HO(2)S(1) terminals as follows.
2. If NG, replace heated oxygen sensor 1.
CAUTION:
-
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete
floor; use a new one.