Titan 2WD V8-5.6L (VK56) (2004)
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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 oxygen sensor, clean exhaust system threads (using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12) and
approved anti-seize lubricant.
AIR FUEL RATIO (A/F) SENSOR 1 HEATER
Check resistance between terminals 3 and 4.
Resistance: 2.3 - 4.3 Ohms at 25 °C (77 °F)
Check continuity between terminals 3 and 1, 2, 5, 6, terminals 4 and 1, 2, 5, 6.
Continuity should not exist.
If NG, replace the A/F sensor 1.
CAUTION:
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Discard any A/F 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.
-
Before installing new A/F sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and
approved anti-seize lubricant.